draft-ietf-netmod-routing-cfg-12.txt   draft-ietf-netmod-routing-cfg-13.txt 
NETMOD L. Lhotka NETMOD L. Lhotka
Internet-Draft CZ.NIC Internet-Draft CZ.NIC
Intended status: Standards Track November 07, 2013 Intended status: Standards Track January 10, 2014
Expires: May 11, 2014 Expires: July 14, 2014
A YANG Data Model for Routing Management A YANG Data Model for Routing Management
draft-ietf-netmod-routing-cfg-12 draft-ietf-netmod-routing-cfg-13
Abstract Abstract
This document contains a specification of three YANG modules. This document contains a specification of three YANG modules.
Together they form the core routing data model which serves as a Together they form the core routing data model which serves as a
framework for configuring and managing a routing subsystem. It is framework for configuring and managing a routing subsystem. It is
expected that these modules will be augmented by additional YANG expected that these modules will be augmented by additional YANG
modules defining data models for individual routing protocols and modules defining data models for individual routing protocols and
other related functions. The core routing data model provides common other related functions. The core routing data model provides common
building blocks for such extensions - routing instances, routes, building blocks for such extensions - routing instances, routes,
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This Internet-Draft will expire on May 11, 2014. This Internet-Draft will expire on July 14, 2014.
Copyright Notice Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the Copyright (c) 2014 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
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5.3. Routing Information Base (RIB) . . . . . . . . . . . . . . 16 5.3. Routing Information Base (RIB) . . . . . . . . . . . . . . 16
5.3.1. Multiple RIBs per Address Family . . . . . . . . . . . 17 5.3.1. Multiple RIBs per Address Family . . . . . . . . . . . 17
5.4. Routing Protocol . . . . . . . . . . . . . . . . . . . . . 17 5.4. Routing Protocol . . . . . . . . . . . . . . . . . . . . . 17
5.4.1. Routing Pseudo-Protocols . . . . . . . . . . . . . . . 18 5.4.1. Routing Pseudo-Protocols . . . . . . . . . . . . . . . 18
5.4.2. Defining New Routing Protocols . . . . . . . . . . . . 20 5.4.2. Defining New Routing Protocols . . . . . . . . . . . . 20
5.5. Route Filter . . . . . . . . . . . . . . . . . . . . . . . 21 5.5. Route Filter . . . . . . . . . . . . . . . . . . . . . . . 21
5.6. RPC Operations . . . . . . . . . . . . . . . . . . . . . . 22 5.6. RPC Operations . . . . . . . . . . . . . . . . . . . . . . 22
6. Interactions with Other YANG Modules . . . . . . . . . . . . . 23 6. Interactions with Other YANG Modules . . . . . . . . . . . . . 23
6.1. Module "ietf-interfaces" . . . . . . . . . . . . . . . . . 23 6.1. Module "ietf-interfaces" . . . . . . . . . . . . . . . . . 23
6.2. Module "ietf-ip" . . . . . . . . . . . . . . . . . . . . . 23 6.2. Module "ietf-ip" . . . . . . . . . . . . . . . . . . . . . 23
7. Routing YANG Module . . . . . . . . . . . . . . . . . . . . . 25 7. Routing Management YANG Module . . . . . . . . . . . . . . . . 25
8. IPv4 Unicast Routing YANG Module . . . . . . . . . . . . . . . 47 8. IPv4 Unicast Routing Management YANG Module . . . . . . . . . 47
9. IPv6 Unicast Routing YANG Module . . . . . . . . . . . . . . . 54 9. IPv6 Unicast Routing Management YANG Module . . . . . . . . . 54
10. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 69 10. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 69
11. Security Considerations . . . . . . . . . . . . . . . . . . . 71 11. Security Considerations . . . . . . . . . . . . . . . . . . . 71
12. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 72 12. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 72
13. References . . . . . . . . . . . . . . . . . . . . . . . . . . 73 13. References . . . . . . . . . . . . . . . . . . . . . . . . . . 73
13.1. Normative References . . . . . . . . . . . . . . . . . . . 73 13.1. Normative References . . . . . . . . . . . . . . . . . . . 73
13.2. Informative References . . . . . . . . . . . . . . . . . . 73 13.2. Informative References . . . . . . . . . . . . . . . . . . 73
Appendix A. The Complete Data Trees . . . . . . . . . . . . . . . 74 Appendix A. The Complete Data Trees . . . . . . . . . . . . . . . 74
A.1. Configuration Data . . . . . . . . . . . . . . . . . . . . 74 A.1. Configuration Data . . . . . . . . . . . . . . . . . . . . 74
A.2. Operational State Data . . . . . . . . . . . . . . . . . . 76 A.2. Operational State Data . . . . . . . . . . . . . . . . . . 76
Appendix B. Example: Adding a New Routing Protocol . . . . . . . 78 Appendix B. Minimum Implementation . . . . . . . . . . . . . . . 78
Appendix C. Example: NETCONF <get> Reply . . . . . . . . . . . . 81 Appendix C. Example: Adding a New Routing Protocol . . . . . . . 79
Appendix D. Change Log . . . . . . . . . . . . . . . . . . . . . 87 Appendix D. Example: NETCONF <get> Reply . . . . . . . . . . . . 82
D.1. Changes Between Versions -11 and -12 . . . . . . . . . . . 87 Appendix E. Change Log . . . . . . . . . . . . . . . . . . . . . 89
D.2. Changes Between Versions -10 and -11 . . . . . . . . . . . 87 E.1. Changes Between Versions -12 and -13 . . . . . . . . . . . 89
D.3. Changes Between Versions -09 and -10 . . . . . . . . . . . 87 E.2. Changes Between Versions -11 and -12 . . . . . . . . . . . 89
D.4. Changes Between Versions -08 and -09 . . . . . . . . . . . 88 E.3. Changes Between Versions -10 and -11 . . . . . . . . . . . 90
D.5. Changes Between Versions -07 and -08 . . . . . . . . . . . 88 E.4. Changes Between Versions -09 and -10 . . . . . . . . . . . 90
D.6. Changes Between Versions -06 and -07 . . . . . . . . . . . 88 E.5. Changes Between Versions -08 and -09 . . . . . . . . . . . 90
D.7. Changes Between Versions -05 and -06 . . . . . . . . . . . 88 E.6. Changes Between Versions -07 and -08 . . . . . . . . . . . 91
D.8. Changes Between Versions -04 and -05 . . . . . . . . . . . 89 E.7. Changes Between Versions -06 and -07 . . . . . . . . . . . 91
D.9. Changes Between Versions -03 and -04 . . . . . . . . . . . 90 E.8. Changes Between Versions -05 and -06 . . . . . . . . . . . 91
D.10. Changes Between Versions -02 and -03 . . . . . . . . . . . 90 E.9. Changes Between Versions -04 and -05 . . . . . . . . . . . 92
D.11. Changes Between Versions -01 and -02 . . . . . . . . . . . 91 E.10. Changes Between Versions -03 and -04 . . . . . . . . . . . 92
D.12. Changes Between Versions -00 and -01 . . . . . . . . . . . 91 E.11. Changes Between Versions -02 and -03 . . . . . . . . . . . 93
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 92 E.12. Changes Between Versions -01 and -02 . . . . . . . . . . . 93
E.13. Changes Between Versions -00 and -01 . . . . . . . . . . . 94
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 95
1. Introduction 1. Introduction
This document contains a specification of the following YANG modules: This document contains a specification of the following YANG modules:
o Module "ietf-routing" provides generic components of a routing o Module "ietf-routing" provides generic components of a routing
data model. data model.
o Module "ietf-ipv4-unicast-routing" augments the "ietf-routing" o Module "ietf-ipv4-unicast-routing" augments the "ietf-routing"
module with additional data specific to IPv4 unicast. module with additional data specific to IPv4 unicast.
o Module "ietf-ipv6-unicast-routing" augments the "ietf-routing" o Module "ietf-ipv6-unicast-routing" augments the "ietf-routing"
module with additional data specific to IPv6 unicast, including module with additional data specific to IPv6 unicast, including
the router configuration variables required by [RFC4861]. the router configuration variables required by [RFC4861].
These modules together define the so-called core routing data model, These modules together define the so-called core routing data model,
which is proposed as a basis for the development of data models for which is proposed as a basis for the development of data models for
configuration and management of more sophisticated routing systems. configuration and management of more sophisticated routing systems.
While these three modules can be directly used for simple IP devices While these three modules can be directly used for simple IP devices
with static routing, their main purpose is to provide essential with static routing (see Appendix B), their main purpose is to
building blocks for more complicated setups involving multiple provide essential building blocks for more complicated setups
routing protocols, multicast routing, additional address families, involving multiple routing protocols, multicast routing, additional
and advanced functions such as route filtering or policy routing. To address families, and advanced functions such as route filtering or
this end, it is expected that the core routing data model will be policy routing. To this end, it is expected that the core routing
augmented by numerous modules developed by other IETF working groups. data model will be augmented by numerous modules developed by other
IETF working groups.
2. Terminology and Notation 2. Terminology and Notation
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119]. document are to be interpreted as described in [RFC2119].
The following terms are defined in [RFC6241]: The following terms are defined in [RFC6241]:
o client o client
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o RPC operation o RPC operation
2.1. Glossary of New Terms 2.1. Glossary of New Terms
active route: a route that is actually used for sending packets. If active route: a route that is actually used for sending packets. If
there are multiple candidate routes with a matching destination there are multiple candidate routes with a matching destination
prefix, then it is up to the routing algorithm to select the prefix, then it is up to the routing algorithm to select the
active route. active route.
core routing data model: YANG data model resulting from the core routing data model: YANG data model comprising "ietf-routing",
combination of "ietf-routing", "ietf-ipv4-unicast-routing" and "ietf-ipv4-unicast-routing" and "ietf-ipv6-unicast-routing"
"ietf-ipv6-unicast-routing" modules. modules.
direct route: a route to a directly connected network. direct route: a route to a directly connected network.
routing information base (RIB): An object containing routes together routing information base (RIB): An object containing a list of
with other information. See Section 5.3 for details. routes together with other information. See Section 5.3 for
details.
system-controlled entry: An entry of a list in operational state system-controlled entry: An entry of a list in operational state
data ("config false") that is created by the system independently data ("config false") that is created by the system independently
of what has been explicitly configured. See Section 4.1 for of what has been explicitly configured. See Section 4.1 for
details. details.
user-controlled entry: An entry of a list in operational state data user-controlled entry: An entry of a list in operational state data
("config false") that is created and deleted as a direct ("config false") that is created and deleted as a direct
consequence of certain configuration changes. See Section 4.1 for consequence of certain configuration changes. See Section 4.1 for
details. details.
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+--rw routing +--rw routing
+--rw routing-instance* [name] +--rw routing-instance* [name]
| +--rw name | +--rw name
| +--rw type? | +--rw type?
| +--rw enabled? | +--rw enabled?
| +--rw router-id? | +--rw router-id?
| +--rw description? | +--rw description?
| +--rw default-ribs | +--rw default-ribs
| | +--rw default-rib* [address-family] | | +--rw default-rib* [address-family]
| | +--rw address-family | | +--rw address-family
| | +--rw name | | +--rw rib-name
| +--rw interfaces | +--rw interfaces
| | +--rw interface* [name] | | +--rw interface* [name]
| | +--rw name | | +--rw name
| | +--rw v6ur:ipv6-router-advertisements | | +--rw v6ur:ipv6-router-advertisements
| | ... | | ...
| +--rw routing-protocols | +--rw routing-protocols
| +--rw routing-protocol* [name] | +--rw routing-protocol* [name]
| +--rw name | +--rw name
| +--rw description? | +--rw description?
| +--rw enabled? | +--rw enabled?
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+--rw route-filter* [name] +--rw route-filter* [name]
+--rw name +--rw name
+--rw description? +--rw description?
+--rw type +--rw type
Figure 1: Configuration data hierarchy. Figure 1: Configuration data hierarchy.
+--ro routing-state +--ro routing-state
+--ro routing-instance* [name] +--ro routing-instance* [name]
| +--ro name | +--ro name
| +--ro id? | +--ro id
| +--ro type? | +--ro type?
| +--ro router-id? | +--ro router-id?
| +--ro default-ribs | +--ro default-ribs
| | +--ro default-rib* [address-family] | | +--ro default-rib* [address-family]
| | +--ro address-family | | +--ro address-family
| | +--ro rib-id | | +--ro rib-name
| +--ro interfaces | +--ro interfaces
| | +--ro interface* [name] | | +--ro interface* [name]
| | +--ro name | | +--ro name
| | +--ro v6ur:ipv6-router-advertisements | | +--ro v6ur:ipv6-router-advertisements
| | ... | | ...
| +--ro routing-protocols | +--ro routing-protocols
| +--ro routing-protocol* [name] | +--ro routing-protocol* [name]
| +--ro name | +--ro name
| +--ro type | +--ro type
| +--ro connected-ribs | +--ro connected-ribs
| ... | ...
+--ro ribs +--ro ribs
| +--ro rib* [name] | +--ro rib* [name]
| +--ro name | +--ro name
| +--ro id? | +--ro id
| +--ro address-family | +--ro address-family
| +--ro routes | +--ro routes
| | +--ro route* | | +--ro route* [id]
| | ... | | ...
| +--ro recipient-ribs | +--ro recipient-ribs
| +--ro recipient-rib* [rib-id] | +--ro recipient-rib* [rib-name]
| ... | ...
+--ro route-filters +--ro route-filters
+--ro route-filter* [name] +--ro route-filter* [name]
+--ro name +--ro name
+--ro type +--ro type
Figure 2: Operational state data hierarchy. Figure 2: Operational state data hierarchy.
As can be seen from Figures 1 and 2, the core routing data model As can be seen from Figures 1 and 2, the core routing data model
introduces several generic components of a routing framework: routing introduces several generic components of a routing framework: routing
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In such a list, the server creates the required item as a so-called In such a list, the server creates the required item as a so-called
system-controlled entry in operational state data, i.e., inside the system-controlled entry in operational state data, i.e., inside the
"routing-state" container. "routing-state" container.
Additional entries may be created in the configuration by the user Additional entries may be created in the configuration by the user
via the NETCONF protocol. These are so-called user-controlled via the NETCONF protocol. These are so-called user-controlled
entries. If the server accepts a configured user-controlled entry, entries. If the server accepts a configured user-controlled entry,
then this entry also appears in the operational state version of the then this entry also appears in the operational state version of the
list. list.
Both versions of the list (in operational state data and Corresponding entries in both versions of the list (in operational
configuration) use the "name" leaf as their key. state data and configuration) have the same value of the list key.
The user may also provide supplemental configuration of system- The user may also provide supplemental configuration of system-
controlled entries. To do so, the user creates a new entry in the controlled entries. To do so, the user creates a new entry in the
configuration with the desired contents. In order to bind this entry configuration with the desired contents. In order to bind this entry
with the corresponding entry in the operational state list, the key with the corresponding entry in the operational state list, the key
of the configuration entry has to be set to the same value as the key of the configuration entry has to be set to the same value as the key
of the state entry. of the state entry.
An example can be seen in Appendix C: the "/routing-state/ An example can be seen in Appendix D: the "/routing-state/
routing-instance" list has a single system-controlled entry whose routing-instance" list has a single system-controlled entry whose
"name" key has the value "rtr0". This entry is configured by the "name" key has the value "rtr0". This entry is configured by the
"/routing/routing-instance" entry whose "name" key is also "rtr0". "/routing/routing-instance" entry whose "name" key is also "rtr0".
Deleting a user-controlled entry from the configuration list results Deleting a user-controlled entry from the configuration list results
in the removal of the corresponding entry in the operational state in the removal of the corresponding entry in the operational state
list. In contrast, if a system-controlled entry is deleted from the list. In contrast, if a system-controlled entry is deleted from the
configuration list, only the extra configuration specified in that configuration list, only the extra configuration specified in that
entry is removed but the corresponding operational state entry entry is removed but the corresponding operational state entry
remains in the list. remains in the list.
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devices, some parts and options of the data model are not needed and devices, some parts and options of the data model are not needed and
would represent unnecessary complications for the implementation. would represent unnecessary complications for the implementation.
Therefore, the core routing data model makes the advanced Therefore, the core routing data model makes the advanced
functionality optional by means of two YANG features: functionality optional by means of two YANG features:
o "multiple-ribs" - indicates that the device supports multiple RIBs o "multiple-ribs" - indicates that the device supports multiple RIBs
per address family, routing protocols connected to non-default per address family, routing protocols connected to non-default
RIBs, and RIBs configured as receivers of routes from other RIBs. RIBs, and RIBs configured as receivers of routes from other RIBs.
o "multipath-routes" - indicates that the device supports routes o "multipath-routes" - indicates that the device supports routes
with multiple nexthops. with multiple next-hops.
See the "ietf-routing" module for details. See the "ietf-routing" module for details.
5. Basic Building Blocks 5. Basic Building Blocks
This section describes the essential components of the core routing This section describes the essential components of the core routing
data model. data model.
5.1. Routing Instance 5.1. Routing Instance
Each routing instance in the core routing data model represents a Each routing instance in the core routing data model represents a
logical router. The exact semantics of this term are left to logical router. The exact semantics of this term are left to
implementations. For example, routing instances may be completely implementations. For example, routing instances may be completely
isolated virtual routers or, alternatively, they may internally share isolated virtual routers or, alternatively, they may internally share
certain information. certain information.
A routing instance together with its operational status is A routing instance together with its operational state is represented
represented as an entry of the list "/routing-state/ as an entry of the list "/routing-state/routing-instance", and
routing-instance", and identified by a unique numeric identifier. identified by a unique name. Configuration of that router instance
Configuration of that router instance appears as entry of the list appears as an entry of the list "/routing/routing-instance".
"/routing/routing-instance" whose key is a routing instance name
selected by the client.
An implementation MAY support multiple types of logical routers An implementation MAY support multiple types of logical routers
simultaneously. Instances of all routing instance types are simultaneously. Instances of all routing instance types are
organized as entries of the same flat "routing-instance" list. In organized as entries of the same flat "routing-instance" list. In
order to discriminate routing instances belonging to different types, order to discriminate routing instances belonging to different types,
the "type" leaf is defined as a child of the "routing-instance" node. the "type" leaf is defined as a child of the "routing-instance" node.
An implementation MAY create one or more system-controlled routing An implementation MAY create one or more system-controlled routing
instances, and MAY also pose restrictions on allowed routing instance instances, and MAY also pose restrictions on allowed routing instance
types and on the number of supported instances for each type. For types and on the number of supported instances for each type. For
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* valid-lifetime, * valid-lifetime,
* on-link-flag, * on-link-flag,
* preferred-lifetime, * preferred-lifetime,
* autonomous-flag. * autonomous-flag.
The definitions and descriptions of the above parameters can be found The definitions and descriptions of the above parameters can be found
in the text of the module "ietf-ipv6-unicast-routing" (Section 9). in the module "ietf-ipv6-unicast-routing" (Section 9).
NOTES: NOTES:
1. The "IsRouter" flag, which is also required by [RFC4861], is 1. The "IsRouter" flag, which is also required by [RFC4861], is
implemented in the "ietf-ip" module [YANG-IP] (leaf "ip: implemented in the "ietf-ip" module [YANG-IP] (leaf "ip:
forwarding"). forwarding").
2. The original specification [RFC4861] allows the implementations 2. The original specification [RFC4861] allows the implementations
to decide whether the "valid-lifetime" and "preferred-lifetime" to decide whether the "valid-lifetime" and "preferred-lifetime"
parameters remain the same in consecutive advertisements, or parameters remain the same in consecutive advertisements, or
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5.2. Route 5.2. Route
Routes are basic elements of information in a routing system. The Routes are basic elements of information in a routing system. The
core routing data model defines only the following minimal set of core routing data model defines only the following minimal set of
route attributes: route attributes:
o destination prefix: IP prefix specifying the set of destination o destination prefix: IP prefix specifying the set of destination
addresses for which the route may be used. This attribute is addresses for which the route may be used. This attribute is
mandatory. mandatory.
o next hop or action: outgoing interface, IP address of one or more o next-hop or action: outgoing interface, IP address of one or more
adjacent routers to which a packet should be forwarded, or a adjacent routers to which a packet should be forwarded, or a
special action such as discarding the packet. special action such as discarding the packet.
The above list of route attributes suffices for a simple static The above list of route attributes suffices for a simple static
routing configuration. It is expected that future modules defining routing configuration. It is expected that future modules defining
routing protocols will add other route attributes such as metrics or routing protocols will add other route attributes such as metrics or
preferences. preferences.
Routes and their attributes are used both in configuration data, for Routes and their attributes are used both in configuration data, for
example as manually configured static routes, and in operational example as manually configured static routes, and in operational
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represented as entries of the list "/routing-state/ribs/rib". The represented as entries of the list "/routing-state/ribs/rib". The
contents of RIBs are controlled and manipulated by routing protocol contents of RIBs are controlled and manipulated by routing protocol
operations which may result in route additions, removals and operations which may result in route additions, removals and
modifications. This also includes manipulations via the "static" modifications. This also includes manipulations via the "static"
and/or "direct" pseudo-protocols, see Section 5.4.1. and/or "direct" pseudo-protocols, see Section 5.4.1.
RIBs are global, which means that a RIB may be used by any or all RIBs are global, which means that a RIB may be used by any or all
routing instances. However, an implementation MAY specify rules and routing instances. However, an implementation MAY specify rules and
restrictions for sharing RIBs among routing instances. restrictions for sharing RIBs among routing instances.
Each routing instance must have, for every supported address family, Each routing instance has, for every supported address family, one
one RIB selected as the so-called default RIB. This selection is RIB selected as the so-called default RIB. This selection is
recorded in the list "default-rib". The role of default RIBs is recorded in the list "default-rib". The role of default RIBs is
explained in Section 5.4. explained in Section 5.4.
Simple router implementations that do not advertise the feature Simple router implementations that do not advertise the feature
"multiple-ribs" will typically create one system-controlled RIB per "multiple-ribs" will typically create one system-controlled RIB per
supported address family, and declare it as a default RIB (via a supported address family, and declare it as the default RIB (via a
system-controlled entry of the "default-rib" list). system-controlled entry of the "default-rib" list).
5.3.1. Multiple RIBs per Address Family 5.3.1. Multiple RIBs per Address Family
More complex router implementations advertising the "multiple-ribs" More complex router implementations advertising the "multiple-ribs"
feature support multiple RIBs per address family that can be used for feature support multiple RIBs per address family that can be used for
policy routing and other purposes. Every RIB can then serve as a policy routing and other purposes. Every RIB can then serve as a
source of routes for other RIBs of the same address family. To source of routes for other RIBs of the same address family. To
achieve this, one or more recipient RIBs may be specified in the achieve this, one or more recipient RIBs may be specified in the
configuration of the source RIB. Optionally, a route filter may be configuration of the source RIB. Optionally, a route filter may be
skipping to change at page 18, line 48 skipping to change at page 18, line 46
The core routing data model defines two special routing protocol The core routing data model defines two special routing protocol
types - "direct" and "static". Both are in fact pseudo-protocols, types - "direct" and "static". Both are in fact pseudo-protocols,
which means that they are confined to the local device and do not which means that they are confined to the local device and do not
exchange any routing information with neighboring routers. Routes exchange any routing information with neighboring routers. Routes
from both "direct" and "static" protocol instances are passed to the from both "direct" and "static" protocol instances are passed to the
connected RIB (subject to route filters, if any), but an exchange in connected RIB (subject to route filters, if any), but an exchange in
the opposite direction is not allowed. the opposite direction is not allowed.
Every routing instance MUST implement exactly one instance of the Every routing instance MUST implement exactly one instance of the
"direct" pseudo-protocol type. The name of this instance MUST also "direct" pseudo-protocol type. It is the source of direct routes for
be "direct". It is the source of direct routes for all configured all configured address families. Direct routes are normally supplied
address families. Direct routes are normally supplied by the by the operating system kernel, based on the configuration of network
operating system kernel, based on the configuration of network
interface addresses, see Section 6.2. The "direct" pseudo-protocol interface addresses, see Section 6.2. The "direct" pseudo-protocol
MUST always be connected to the default RIBs of all supported address MUST always be connected to the default RIBs of all supported address
families. Unlike other routing protocol types, this connection families. Unlike other routing protocol types, this connection
cannot be changed in the configuration. Direct routes MAY be cannot be changed in the configuration. Direct routes MAY be
filtered before they appear in the default RIB. filtered before they appear in the default RIB.
A pseudo-protocol of the type "static" allows for specifying routes A pseudo-protocol of the type "static" allows for specifying routes
manually. It MAY be configured in zero or multiple instances, manually. It MAY be configured in zero or multiple instances,
although a typical configuration will have exactly one instance per although a typical configuration will have exactly one instance per
routing instance. routing instance.
Static routes are configured within the "static-routes" container, Static routes are configured within the "static-routes" container,
see Figure 4. see Figure 4.
+--rw static-routes +--rw static-routes
+--rw v4ur:ipv4 +--rw v4ur:ipv4
| +--rw v4ur:route* [id] | +--rw v4ur:route* [id]
| +--rw v4ur:id | +--rw v4ur:id
| +--rw v4ur:description? | +--rw v4ur:description?
| +--rw v4ur:destination-prefix | +--rw v4ur:destination-prefix
| +--rw (nexthop-options) | +--rw (next-hop-options)
| +--:(special-nexthop) | +--:(special-next-hop)
| | +--rw v4ur:special-nexthop? | | +--rw v4ur:special-next-hop?
| +--:(simple-nexthop) | +--:(simple-next-hop)
| | +--rw v4ur:gateway? | | +--rw v4ur:next-hop?
| | +--rw v4ur:outgoing-interface? | | +--rw v4ur:outgoing-interface?
| +--:(nexthop-list) {rt:multipath-routes}? | +--:(next-hop-list) {rt:multipath-routes}?
| +--rw v4ur:nexthop* [id] | +--rw v4ur:next-hop-list
| +--rw v4ur:id | +--rw v4ur:next-hop* [id]
| +--rw v4ur:address? | +--rw v4ur:id
| +--rw v4ur:outgoing-interface? | +--rw v4ur:address?
| +--rw v4ur:priority? | +--rw v4ur:outgoing-interface?
| +--rw v4ur:weight? | +--rw v4ur:priority?
| +--rw v4ur:weight?
+--rw v6ur:ipv6 +--rw v6ur:ipv6
+--rw v6ur:route* [id] +--rw v6ur:route* [id]
+--rw v6ur:id +--rw v6ur:id
+--rw v6ur:description? +--rw v6ur:description?
+--rw v6ur:destination-prefix +--rw v6ur:destination-prefix
+--rw (nexthop-options) +--rw (next-hop-options)
+--:(special-nexthop) +--:(special-next-hop)
| +--rw v6ur:special-nexthop? | +--rw v6ur:special-next-hop?
+--:(simple-nexthop) +--:(simple-next-hop)
| +--rw v6ur:gateway? | +--rw v6ur:next-hop?
| +--rw v6ur:outgoing-interface? | +--rw v6ur:outgoing-interface?
+--:(nexthop-list) {rt:multipath-routes}? +--:(next-hop-list) {rt:multipath-routes}?
+--rw v6ur:nexthop* [id] +--rw v6ur:next-hop-list
+--rw v6ur:id +--rw v6ur:next-hop* [id]
+--rw v6ur:address? +--rw v6ur:id
+--rw v6ur:outgoing-interface? +--rw v6ur:address?
+--rw v6ur:priority? +--rw v6ur:outgoing-interface?
+--rw v6ur:weight? +--rw v6ur:priority?
+--rw v6ur:weight?
Figure 4: Structure of "static-routes" subtree. Figure 4: Structure of "static-routes" subtree.
5.4.2. Defining New Routing Protocols 5.4.2. Defining New Routing Protocols
It is expected that future YANG modules will create data models for It is expected that future YANG modules will create data models for
additional routing protocol types. Such a new module has to define additional routing protocol types. Such a new module has to define
the protocol-specific configuration and state data, and it has to fit the protocol-specific configuration and state data, and it has to fit
it into the core routing framework in the following way: it into the core routing framework in the following way:
skipping to change at page 21, line 39 skipping to change at page 21, line 39
in the list of routing instance interfaces (rt:interface). in the list of routing instance interfaces (rt:interface).
By using the "when" statement, the augmented configuration parameters By using the "when" statement, the augmented configuration parameters
and state data specific to the new protocol SHOULD be made and state data specific to the new protocol SHOULD be made
conditional and valid only if the value of "rt:type" or "rt:source- conditional and valid only if the value of "rt:type" or "rt:source-
protocol" is equal to the new protocol's identity. It is also protocol" is equal to the new protocol's identity. It is also
RECOMMENDED that protocol-specific data nodes be encapsulated in RECOMMENDED that protocol-specific data nodes be encapsulated in
appropriately named containers. appropriately named containers.
The above steps are implemented by the example YANG module for the The above steps are implemented by the example YANG module for the
RIP routing protocol in Appendix B. RIP routing protocol in Appendix C.
5.5. Route Filter 5.5. Route Filter
The core routing data model provides a skeleton for defining route The core routing data model provides a skeleton for defining route
filters that can be used to restrict the set of routes being filters that can be used to restrict the set of routes being
exchanged between a routing protocol instance and a connected RIB, or exchanged between a routing protocol instance and a connected RIB, or
between a source and a recipient RIB. Route filters may also between a source and a recipient RIB. Route filters may also
manipulate routes, i.e., add, delete, or modify their attributes. manipulate routes, i.e., add, delete, or modify their attributes.
Route filters are global, which means that a configured route filter Route filters are global, which means that a configured route filter
skipping to change at page 22, line 26 skipping to change at page 22, line 26
will be developed separately. will be developed separately.
Each route filter is identified by a unique name. Its type MUST be Each route filter is identified by a unique name. Its type MUST be
specified by the "type" identity reference - this opens the space for specified by the "type" identity reference - this opens the space for
multiple route filtering framework implementations. multiple route filtering framework implementations.
5.6. RPC Operations 5.6. RPC Operations
The "ietf-routing" module defines two RPC operations: The "ietf-routing" module defines two RPC operations:
o active-route: query the routing system for the active route that o active-route: query a routing instance for the active route that
is currently used for sending datagrams to a destination host is currently used for sending datagrams to a destination host
whose address is passed as an input parameter. whose address is passed as an input parameter.
o route-count: retrieve the total number of entries in a RIB. o route-count: retrieve the total number of entries in a RIB.
6. Interactions with Other YANG Modules 6. Interactions with Other YANG Modules
The semantics of the core routing data model also depend on several The semantics of the core routing data model also depend on several
configuration parameters that are defined in other YANG modules. configuration parameters that are defined in other YANG modules.
skipping to change at page 25, line 5 skipping to change at page 25, line 5
IPv6 routing functions, such as routing protocols. IPv6 routing functions, such as routing protocols.
In addition, the "ietf-ip" module allows for configuring IPv4 and In addition, the "ietf-ip" module allows for configuring IPv4 and
IPv6 addresses and network prefixes or masks on network layer IPv6 addresses and network prefixes or masks on network layer
interfaces. Configuration of these parameters on an enabled interfaces. Configuration of these parameters on an enabled
interface MUST result in an immediate creation of the corresponding interface MUST result in an immediate creation of the corresponding
direct route. The destination prefix of this route is set according direct route. The destination prefix of this route is set according
to the configured IP address and network prefix/mask, and the to the configured IP address and network prefix/mask, and the
interface is set as the outgoing interface for that route. interface is set as the outgoing interface for that route.
7. Routing YANG Module 7. Routing Management YANG Module
RFC Ed.: In this section, replace all occurrences of 'XXXX' with the RFC Ed.: In this section, replace all occurrences of 'XXXX' with the
actual RFC number and all occurrences of the revision date below with actual RFC number and all occurrences of the revision date below with
the date of RFC publication (and remove this note). the date of RFC publication (and remove this note).
<CODE BEGINS> file "ietf-routing@2013-11-07.yang" <CODE BEGINS> file "ietf-routing@2014-01-10.yang"
module ietf-routing { module ietf-routing {
namespace "urn:ietf:params:xml:ns:yang:ietf-routing"; namespace "urn:ietf:params:xml:ns:yang:ietf-routing";
prefix "rt"; prefix "rt";
import ietf-yang-types { import ietf-yang-types {
prefix "yang"; prefix "yang";
} }
import ietf-interfaces { import ietf-interfaces {
prefix "if"; prefix "if";
} }
organization organization
"IETF NETMOD (NETCONF Data Modeling Language) Working Group"; "IETF NETMOD (NETCONF Data Modeling Language) Working Group";
contact contact
"WG Web: <http://tools.ietf.org/wg/netmod/> "WG Web: <http://tools.ietf.org/wg/netmod/>
WG List: <mailto:netmod@ietf.org> WG List: <mailto:netmod@ietf.org>
WG Chair: David Kessens WG Chair: David Kessens
<mailto:david.kessens@nsn.com> <mailto:david.kessens@nsn.com>
WG Chair: Juergen Schoenwaelder WG Chair: Juergen Schoenwaelder
<mailto:j.schoenwaelder@jacobs-university.de> <mailto:j.schoenwaelder@jacobs-university.de>
Editor: Ladislav Lhotka Editor: Ladislav Lhotka
<mailto:lhotka@nic.cz> <mailto:lhotka@nic.cz>";
";
description description
"This YANG module defines essential components for the management "This YANG module defines essential components for the management
of a routing subsystem. of a routing subsystem.
Copyright (c) 2013 IETF Trust and the persons identified as Copyright (c) 2013 IETF Trust and the persons identified as
authors of the code. All rights reserved. authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with or Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject to without modification, is permitted pursuant to, and subject to
the license terms contained in, the Simplified BSD License set the license terms contained in, the Simplified BSD License set
forth in Section 4.c of the IETF Trust's Legal Provisions forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents Relating to IETF Documents
(http://trustee.ietf.org/license-info). (http://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC XXXX; see the This version of this YANG module is part of RFC XXXX; see the
RFC itself for full legal notices. RFC itself for full legal notices.";
";
revision 2013-11-07 { revision 2014-01-10 {
description description
"Initial revision."; "Initial revision.";
reference reference
"RFC XXXX: A YANG Data Model for Routing Management"; "RFC XXXX: A YANG Data Model for Routing Management";
} }
/* Features */ /* Features */
feature multiple-ribs { feature multiple-ribs {
description description
"This feature indicates that the device supports multiple RIBS "This feature indicates that the device supports multiple RIBS
per address family, and the framework for passing routes per address family, and the framework for passing routes
between RIBs, or between routing protocols and RIBs. between RIBs.
Devices that do not support this feature MUST provide exactly Devices that do not support this feature MUST provide exactly
one system-controlled RIB per supported address family. These one system-controlled RIB per supported address family. These
RIBs then appear as entries of the list RIBs then appear as entries of the list
/routing-state/ribs/rib. /routing-state/ribs/rib.";
";
} }
feature multipath-routes { feature multipath-routes {
description description
"This feature indicates that the device supports multipath "This feature indicates that the device supports multipath
routes that have a list of nexthops."; routes that have a list of next-hops.";
} }
/* Identities */ /* Identities */
identity address-family { identity address-family {
description description
"Base identity from which identities describing address "Base identity from which identities describing address
families are derived."; families are derived.";
} }
skipping to change at page 27, line 19 skipping to change at page 27, line 16
description description
"This identity represents IPv6 address family."; "This identity represents IPv6 address family.";
} }
identity routing-instance-type { identity routing-instance-type {
description description
"Base identity from which identities describing routing "Base identity from which identities describing routing
instance types are derived. instance types are derived.
It is primarily intended for discriminating among different It is primarily intended for discriminating among different
types of logical routers or router virtualization. types of logical routers or router virtualization.";
";
} }
identity standard-routing-instance { identity standard-routing-instance {
base routing-instance-type; base routing-instance-type;
description description
"This identity represents a default routing instance."; "This identity represents a default routing instance.";
} }
identity routing-protocol { identity routing-protocol {
description description
skipping to change at page 28, line 29 skipping to change at page 28, line 26
type leafref { type leafref {
path "/rt:routing/rt:routing-instance/rt:name"; path "/rt:routing/rt:routing-instance/rt:name";
} }
description description
"This type is used for leafs that reference a routing instance "This type is used for leafs that reference a routing instance
configuration."; configuration.";
} }
typedef routing-instance-state-ref { typedef routing-instance-state-ref {
type leafref { type leafref {
path "/rt:routing-state/rt:routing-instance/rt:id"; path "/rt:routing-state/rt:routing-instance/rt:name";
} }
description description
"This type is used for leafs that reference state data of a "This type is used for leafs that reference state data of a
routing instance."; routing instance.";
} }
typedef rib-ref { typedef rib-ref {
type leafref { type leafref {
path "/rt:routing/rt:ribs/rt:rib/rt:name"; path "/rt:routing/rt:ribs/rt:rib/rt:name";
} }
description description
"This type is used for leafs that reference a RIB "This type is used for leafs that reference a RIB
configuration."; configuration.";
} }
typedef rib-state-ref { typedef rib-state-ref {
type leafref { type leafref {
path "/rt:routing-state/rt:ribs/rt:rib/rt:id"; path "/rt:routing-state/rt:ribs/rt:rib/rt:name";
} }
description description
"This type is used for leafs that reference a RIB in state "This type is used for leafs that reference a RIB in state
data."; data.";
} }
typedef route-filter-ref { typedef route-filter-ref {
type leafref { type leafref {
path "/rt:routing/rt:route-filters/rt:route-filter/rt:name"; path "/rt:routing/rt:route-filters/rt:route-filter/rt:name";
} }
description description
"This type is used for leafs that reference a route filter "This type is used for leafs that reference a route filter
configuration."; configuration.";
} }
skipping to change at page 29, line 44 skipping to change at page 29, line 40
base address-family; base address-family;
} }
mandatory "true"; mandatory "true";
description description
"Address family."; "Address family.";
} }
} }
grouping state-entry-id { grouping state-entry-id {
description description
"This grouping defines a unique identifier of entries in "This grouping defines a unique identifier for entries in
several operational state lists."; several operational state lists.";
leaf id { leaf id {
type uint64 { type uint64;
range "1..max";
}
description description
"Unique numerical identifier of a list entry in operational "Unique numerical identifier of a list entry in operational
state."; state. It may be used by protocols or tools that inspect
and/or manipulate operational state data and prefer
fixed-size integers as list entry handles.
These identifiers are always ephemeral, i.e., they may
change after a reboot.";
} }
} }
grouping router-id { grouping router-id {
description description
"This grouping provides the definition of router ID."; "This grouping provides the definition of router ID.";
leaf router-id { leaf router-id {
type yang:dotted-quad; type yang:dotted-quad;
description description
"Router ID - 32-bit number in the form of a dotted quad."; "Router ID - 32-bit number in the form of a dotted quad. Some
protocols use this parameter for identifying a router to its
neighbors.";
} }
} }
grouping outgoing-interface { grouping outgoing-interface {
description description
"This grouping defines the outgoing interface for use in "This grouping defines the outgoing interface for use in
nexthops."; next-hops.";
leaf outgoing-interface { leaf outgoing-interface {
type leafref { type leafref {
path "/routing-state/routing-instance/interfaces/interface/" path "/routing-state/routing-instance/interfaces/interface/"
+ "name"; + "name";
} }
description description
"Name of the outgoing interface."; "Name of the outgoing interface.";
} }
} }
grouping special-nexthop { grouping special-next-hop {
description description
"This grouping provides the leaf for specifying special nexthop "This grouping provides the leaf for specifying special
options."; next-hop options.";
leaf special-nexthop { leaf special-next-hop {
type enumeration { type enumeration {
enum blackhole { enum blackhole {
description description
"Silently discard the packet."; "Silently discard the packet.";
} }
enum unreachable { enum unreachable {
description description
"Discard the packet and notify the sender with an error "Discard the packet and notify the sender with an error
message indicating that the destination host is message indicating that the destination host is
unreachable."; unreachable.";
skipping to change at page 31, line 4 skipping to change at page 31, line 6
description description
"Discard the packet and notify the sender with an error "Discard the packet and notify the sender with an error
message indicating that the destination host is message indicating that the destination host is
unreachable."; unreachable.";
} }
enum prohibit { enum prohibit {
description description
"Discard the packet and notify the sender with an error "Discard the packet and notify the sender with an error
message indicating that the communication is message indicating that the communication is
administratively prohibited."; administratively prohibited.";
} }
enum receive { enum receive {
description description
"The packet will be received by the local network "The packet will be received by the local network
device."; device.";
} }
} }
description description
"Special nexthop options."; "Special next-hop options.";
} }
} }
grouping nexthop-classifiers { grouping next-hop-classifiers {
description description
"This grouping provides two nexthop classifiers."; "This grouping provides two next-hop classifiers.";
leaf priority { leaf priority {
type enumeration { type enumeration {
enum primary { enum primary {
value "1"; value "1";
description description
"Primary nexthop."; "Primary next-hop.";
} }
enum backup { enum backup {
value "2"; value "2";
description description
"Backup nexthop."; "Backup next-hop.";
} }
} }
default "primary"; default "primary";
description description
"Simple priority for distinguishing between primary and "Simple priority for distinguishing between primary and
backup nexthops. backup next-hops.
Backup nexthops are used if and only if no primary nexthops Backup next-hops are used if and only if no primary
are reachable. next-hops are reachable.";
";
} }
leaf weight { leaf weight {
type uint8; type uint8;
must ". = 0 or not(../../nexthop/weight = 0)" { must ". = 0 or not(../../next-hop/weight = 0)" {
error-message "Illegal combination of zero and non-zero " error-message "Illegal combination of zero and non-zero "
+ "nexthop weights."; + "next-hop weights.";
description description
"Nexthop weights must be either all zero (equal "Next-hop weights must be either all zero (equal
load-balancing) or all non-zero."; load-balancing) or all non-zero.";
} }
default "0"; default "0";
description description
"This parameter specifies the weight of the nexthop for load "This parameter specifies the weight of the next-hop for load
balancing. The number specifies the relative fraction of the balancing. The number specifies the relative fraction of the
traffic that will use the corresponding nexthop. traffic that will use the corresponding next-hop.
The default value of 0 represents equal load-balancing. The default value of 0 represents equal load-balancing.
If both primary and backup nexthops are present, then the If both primary and backup next-hops are present, then the
weights for each priority level are used separately. weights for each priority level are used separately.";
";
} }
} }
grouping nexthop-content { grouping next-hop-content {
description description
"Generic parameters of nexthops in routes."; "Generic parameters of next-hops in routes.";
choice nexthop-options { choice next-hop-options {
mandatory "true"; mandatory "true";
description description
"Options for expressing the nexthop in routes."; "Options for expressing the next-hop in routes.";
case special-nexthop { case special-next-hop {
uses special-nexthop; uses special-next-hop;
} }
case simple-nexthop { case simple-next-hop {
uses outgoing-interface; uses outgoing-interface;
} }
case nexthop-list { case next-hop-list {
if-feature multipath-routes; if-feature multipath-routes;
list nexthop { container next-hop-list {
unique "id"; list next-hop {
description key "id";
"An entry of a nexthop list."; description
uses state-entry-id; "An entry of a next-hop list.";
uses outgoing-interface; uses state-entry-id;
uses nexthop-classifiers; uses outgoing-interface;
uses next-hop-classifiers;
}
} }
} }
} }
} }
grouping route-metadata { grouping route-metadata {
description description
"Route metadata."; "Route metadata.";
leaf source-protocol { leaf source-protocol {
type identityref { type identityref {
skipping to change at page 33, line 31 skipping to change at page 33, line 33
"Operational state of the routing subsystem."; "Operational state of the routing subsystem.";
list routing-instance { list routing-instance {
key "name"; key "name";
unique "id"; unique "id";
description description
"Each list entry is a container for operational state data of "Each list entry is a container for operational state data of
a routing instance. a routing instance.
An implementation MAY create one or more system-controlled An implementation MAY create one or more system-controlled
instances, other user-controlled instances MAY be created by instances, other user-controlled instances MAY be created by
configuration. configuration.";
";
leaf name { leaf name {
type string; type string;
description description
"The name of the routing instance. "The name of the routing instance.
";
For system-controlled instances the name is persistent,
i.e., it SHOULD NOT change across reboots.";
}
uses state-entry-id {
refine "id" {
mandatory "true";
}
} }
uses state-entry-id;
leaf type { leaf type {
type identityref { type identityref {
base routing-instance-type; base routing-instance-type;
} }
default "rt:standard-routing-instance"; default "rt:standard-routing-instance";
description description
"The routing instance type, primarily intended for "The routing instance type, primarily intended for
discriminating among different types of logical routers, discriminating among different types of logical routers,
route virtualization, master-slave arrangements etc., route virtualization, master-slave arrangements etc.,
while keeping all routing instances in the same flat list. while keeping all routing instances in the same flat
"; list.";
} }
uses router-id { uses router-id {
description description
"Global router ID. "Global router ID.
An implementation may choose a value if none is An implementation may choose a value if none is
configured. configured.
Routing protocols MAY override this global parameter. Routing protocols that use router ID MAY override this
"; global parameter.";
} }
container default-ribs { container default-ribs {
description description
"Default RIBs used by the routing instance."; "Default RIBs used by the routing instance.";
list default-rib { list default-rib {
key "address-family"; key "address-family";
description description
"Each list entry specifies the default RIB for one "Each list entry specifies the default RIB for one
address family. address family.
The default RIB is operationally connected to all The default RIB is operationally connected to all
routing protocols for which a connected RIB has not been routing protocols for which a connected RIB has not been
explicitly configured. explicitly configured.
The 'direct' pseudo-protocol is always connected to the The 'direct' pseudo-protocol is always connected to the
default RIBs. default RIBs.";
";
uses address-family; uses address-family;
leaf rib-id { leaf rib-name {
type rib-state-ref; type rib-state-ref;
mandatory "true"; mandatory "true";
description description
"Name of an existing RIB to be used as the default RIB "Name of an existing RIB to be used as the default RIB
for the given routing instance and address family."; for the given routing instance and address family.";
} }
} }
} }
container interfaces { container interfaces {
description description
skipping to change at page 35, line 16 skipping to change at page 35, line 22
} }
} }
} }
container routing-protocols { container routing-protocols {
description description
"Container for the list of routing protocol instances."; "Container for the list of routing protocol instances.";
list routing-protocol { list routing-protocol {
key "name"; key "name";
description description
"Operational state of a routing protocol instance. "Operational state of a routing protocol instance.
";
An implementation MUST provide exactly one
system-controlled instance of the type 'direct'. Other
instances MAY be created by configuration.";
leaf name { leaf name {
type string; type string;
description description
"The name of the routing protocol instance."; "The name of the routing protocol instance.
For system-controlled instances this name is
persistent, i.e., it SHOULD NOT change across
reboots.";
} }
leaf type { leaf type {
type identityref { type identityref {
base routing-protocol; base routing-protocol;
} }
mandatory "true"; mandatory "true";
description description
"Type of the routing protocol."; "Type of the routing protocol.";
} }
container connected-ribs { container connected-ribs {
if-feature multiple-ribs;
description description
"Container for connected RIBs. "Container for connected RIBs.";
";
list connected-rib { list connected-rib {
key "rib-id"; key "rib-name";
description description
"List of RIBs to which the routing protocol instance "List of RIBs to which the routing protocol instance
is connected (at most one RIB per address family). is connected (at most one RIB per address
"; family).";
leaf rib-id {
leaf rib-name {
type rib-state-ref; type rib-state-ref;
description description
"Name of an existing RIB."; "Name of an existing RIB.";
} }
leaf import-filter { leaf import-filter {
type route-filter-state-ref; type route-filter-state-ref;
description description
"Reference to a route filter that is used for "Reference to a route filter that is used for
filtering routes passed from this routing protocol filtering routes passed from this routing protocol
instance to the RIB specified by the 'name' instance to the RIB specified by the 'rib-name'
sibling node. sibling node.
If this leaf is not present, the behavior is If this leaf is not present, the behavior is
protocol-specific, but typically it means that all protocol-specific, but typically it means that all
routes are accepted. routes are accepted.";
";
} }
leaf export-filter { leaf export-filter {
type route-filter-state-ref; type route-filter-state-ref;
description description
"Reference to a route filter that is used for "Reference to a route filter that is used for
filtering routes passed from the RIB specified by filtering routes passed from the RIB specified by
the 'name' sibling node to this routing protocol the 'rib-name' sibling node to this routing
instance. protocol instance.
If this leaf is not present, the behavior is If this leaf is not present, the behavior is
protocol-specific - typically it means that all protocol-specific - typically it means that all
routes are accepted. routes are accepted.
The 'direct' and 'static' pseudo-protocols accept The 'direct' and 'static' pseudo-protocols accept
no routes from any RIB. no routes from any RIB.";
";
} }
} }
} }
} }
} }
} }
container ribs { container ribs {
description description
"Container for RIBs."; "Container for RIBs.";
list rib { list rib {
key "name"; key "name";
unique "id"; unique "id";
description description
"Each entry represents a RIB identified by the 'name' key. "Each entry represents a RIB identified by the 'name' key.
All routes in a RIB MUST belong to the same address All routes in a RIB MUST belong to the same address
family. family.
The server MUST create the default RIB for each address The server MUST provide a system-controlled default RIB
family, and MAY create other RIBs. Additional RIBs MAY be for each address family, and MAY provide other
created in the configuration. system-controlled RIBs. Additional RIBs MAY be created in
"; the configuration.";
leaf name { leaf name {
type string; type string;
description description
"The name of the RIB."; "The name of the RIB.";
} }
uses state-entry-id; uses state-entry-id {
refine "id" {
mandatory "true";
}
}
uses address-family; uses address-family;
container routes { container routes {
description description
"Current contents of the RIB."; "Current contents of the RIB.";
list route { list route {
unique "id"; key "id";
description description
"A RIB route entry. This data node MUST be augmented "A RIB route entry. This data node MUST be augmented
with information specific for routes of each address with information specific for routes of each address
family."; family.";
uses state-entry-id; uses state-entry-id;
uses nexthop-content; uses next-hop-content;
uses route-metadata; uses route-metadata;
} }
} }
container recipient-ribs { container recipient-ribs {
if-feature multiple-ribs; if-feature multiple-ribs;
description description
"Container for recipient RIBs."; "Container for recipient RIBs.";
list recipient-rib { list recipient-rib {
key "rib-id"; key "rib-name";
description description
"List of RIBs that receive routes from this RIB."; "List of RIBs that receive routes from this RIB.";
leaf rib-id { leaf rib-name {
type rib-state-ref; type rib-state-ref;
description description
"The name of the recipient RIB."; "The name of the recipient RIB.";
} }
leaf filter { leaf filter {
type route-filter-state-ref; type route-filter-state-ref;
description description
"A route filter which is applied to the routes passed "A route filter which is applied to the routes passed
to the recipient RIB."; to the recipient RIB.";
} }
skipping to change at page 38, line 6 skipping to change at page 38, line 20
description description
"Container for route filters."; "Container for route filters.";
list route-filter { list route-filter {
key "name"; key "name";
description description
"Route filters are used for filtering and/or manipulating "Route filters are used for filtering and/or manipulating
routes that are passed between a routing protocol and a routes that are passed between a routing protocol and a
RIB and vice versa, or between two RIBs. RIB and vice versa, or between two RIBs.
It is expected that other modules augment this list with It is expected that other modules augment this list with
contents specific for a particular route filter type. contents specific for a particular route filter type.";
";
leaf name { leaf name {
type string; type string;
description description
"The name of the route filter."; "The name of the route filter.";
} }
leaf type { leaf type {
type identityref { type identityref {
base route-filter; base route-filter;
} }
mandatory "true"; mandatory "true";
skipping to change at page 38, line 34 skipping to change at page 38, line 47
} }
/* Configuration Data */ /* Configuration Data */
container routing { container routing {
description description
"Configuration parameters for the routing subsystem."; "Configuration parameters for the routing subsystem.";
list routing-instance { list routing-instance {
key "name"; key "name";
description description
"Configuration of a routing instance. "Configuration of a routing instance.";
";
leaf name { leaf name {
type string; type string;
description description
"The name of the routing instance. "The name of the routing instance.
For system-controlled entries, the value of this leaf must For system-controlled entries, the value of this leaf must
be the same as the name of the corresponding entry in be the same as the name of the corresponding entry in
state data. state data.
For user-controlled entries, an arbitrary name can be For user-controlled entries, an arbitrary name can be
used. used.";
";
} }
leaf type { leaf type {
type identityref { type identityref {
base routing-instance-type; base routing-instance-type;
} }
default "rt:standard-routing-instance"; default "rt:standard-routing-instance";
description description
"The type of the routing instance."; "The type of the routing instance.";
} }
leaf enabled { leaf enabled {
type boolean; type boolean;
default "true"; default "true";
description description
"Enable/disable the routing instance. "Enable/disable the routing instance.
If this parameter is false, the parent routing instance is If this parameter is false, the parent routing instance is
disabled and does not appear in operational state data, disabled and does not appear in operational state data,
despite any other configuration that might be present. despite any other configuration that might be present.";
";
} }
uses router-id { uses router-id {
description description
"Configuration of the global router ID."; "Configuration of the global router ID.";
} }
leaf description { leaf description {
type string; type string;
description description
"Textual description of the routing instance."; "Textual description of the routing instance.";
} }
container default-ribs { container default-ribs {
if-feature multiple-ribs; if-feature multiple-ribs;
description description
"Configuration of the default RIBs used by the routing "Configuration of the default RIBs used by the routing
instance. instance.
The default RIB for an addressed family if by default The default RIB for an addressed family if by default
connected to all routing protocol instances supporting connected to all routing protocol instances supporting
that address family, and always receives direct routes. that address family, and always receives direct routes.";
";
list default-rib { list default-rib {
must "address-family=/routing/ribs/rib[name=current()/" must "address-family=/routing/ribs/rib[name=current()/"
+ "name]/address-family" { + "rib-name]/address-family" {
error-message "Address family mismatch."; error-message "Address family mismatch.";
description description
"The entry's address family MUST match that of the "The entry's address family MUST match that of the
referenced RIB."; referenced RIB.";
} }
key "address-family"; key "address-family";
description description
"Each list entry configures the default RIB for one "Each list entry configures the default RIB for one
address family."; address family.";
uses address-family; uses address-family;
leaf name { leaf rib-name {
type string; type string;
mandatory "true"; mandatory "true";
description description
"Name of an existing RIB to be used as the default RIB "Name of an existing RIB to be used as the default RIB
for the given routing instance and address family."; for the given routing instance and address family.";
} }
} }
} }
container interfaces { container interfaces {
description description
skipping to change at page 41, line 8 skipping to change at page 41, line 17
} }
leaf enabled { leaf enabled {
type boolean; type boolean;
default "true"; default "true";
description description
"Enable/disable the routing protocol instance. "Enable/disable the routing protocol instance.
If this parameter is false, the parent routing If this parameter is false, the parent routing
protocol instance is disabled and does not appear in protocol instance is disabled and does not appear in
operational state data, despite any other operational state data, despite any other
configuration that might be present. configuration that might be present.";
";
} }
leaf type { leaf type {
type identityref { type identityref {
base routing-protocol; base routing-protocol;
} }
mandatory "true"; mandatory "true";
description description
"Type of the routing protocol - an identity derived "Type of the routing protocol - an identity derived
from the 'routing-protocol' base identity."; from the 'routing-protocol' base identity.";
} }
container connected-ribs { container connected-ribs {
if-feature multiple-ribs; if-feature multiple-ribs;
description description
"Configuration of connected RIBs. "Configuration of connected RIBs.";
";
list connected-rib { list connected-rib {
must "not(/routing/ribs/rib[name=current()/" must "not(/routing/ribs/rib[name=current()/"
+ "preceding-sibling::connected-rib/" + "preceding-sibling::connected-rib/"
+ "name and address-family=/routing/ribs/" + "rib-name and address-family=/routing/ribs/"
+ "rib[name=current()/name]/address-family])" { + "rib[name=current()/rib-name]/address-family])" {
error-message error-message
"Duplicate address family for connected RIBs."; "Duplicate address family for connected RIBs.";
description description
"For each address family, there MUST NOT be more "For each address family, there MUST NOT be more
than one connected RIB."; than one connected RIB.";
} }
key "rib-name"; key "rib-name";
description description
"List of RIBs to which the routing protocol instance "List of RIBs to which the routing protocol instance
is connected (at most one RIB per address family). is connected (at most one RIB per address family).
If no connected RIB is configured for an address If no connected RIB is configured for an address
family, the routing protocol is connected to the family, the routing protocol is connected to the
default RIB for that address family. default RIB for that address family.";
";
leaf rib-name { leaf rib-name {
type rib-ref; type rib-ref;
must "../../../type != 'rt:direct' or " must "../../../type != 'rt:direct' or "
+ "../../../../../default-ribs/ " + "../../../../../default-ribs/ "
+ "default-rib/name=." { + "default-rib/rib-name=." {
error-message "The 'direct' protocol can be " error-message "The 'direct' protocol can be "
+ "connected only to a default RIB."; + "connected only to a default RIB.";
description description
"For the 'direct' pseudo-protocol, the connected "For the 'direct' pseudo-protocol, the connected
RIB must always be a default RIB."; RIB must always be a default RIB.";
} }
description description
"Name of an existing RIB."; "Name of an existing RIB.";
} }
leaf import-filter { leaf import-filter {
skipping to change at page 42, line 32 skipping to change at page 42, line 39
container static-routes { container static-routes {
when "../type='rt:static'" { when "../type='rt:static'" {
description description
"This container is only valid for the 'static' "This container is only valid for the 'static'
routing protocol."; routing protocol.";
} }
description description
"Configuration of the 'static' pseudo-protocol. "Configuration of the 'static' pseudo-protocol.
Address family specific modules augment this node with Address family specific modules augment this node with
their lists of routes. their lists of routes.";
";
} }
} }
} }
} }
container ribs { container ribs {
description description
"Configured RIBs."; "Configured RIBs.";
list rib { list rib {
key "name"; key "name";
description description
"Each entry represents a configured RIB identified by the "Each entry represents a configured RIB identified by the
'name' key. 'name' key.
Entries having the same key as a system-controlled entry Entries having the same key as a system-controlled entry
of the list /routing-state/ribs/rib are used for of the list /routing-state/ribs/rib are used for
configuring parameters of that entry. Other entries define configuring parameters of that entry. Other entries define
additional user-controlled RIBs. additional user-controlled RIBs.";
";
leaf name { leaf name {
type string; type string;
description description
"The name of the RIB. "The name of the RIB.
For system-controlled entries, the value of this leaf For system-controlled entries, the value of this leaf
must be the same as the name of the corresponding entry must be the same as the name of the corresponding entry
in state data. in state data.
For user-controlled entries, an arbitrary name can be For user-controlled entries, an arbitrary name can be
used. used.";
";
} }
uses address-family; uses address-family;
leaf description { leaf description {
type string; type string;
description description
"Textual description of the RIB."; "Textual description of the RIB.";
} }
container recipient-ribs { container recipient-ribs {
if-feature multiple-ribs; if-feature multiple-ribs;
description description
"Configuration of recipient RIBs."; "Configuration of recipient RIBs.";
list recipient-rib { list recipient-rib {
must "name != ../../name" { must "rib-name != ../../name" {
error-message error-message
"Source and recipient RIBs are identical."; "Source and recipient RIBs are identical.";
description description
"A RIB MUST NOT appear among its recipient RIBs."; "A RIB MUST NOT appear among its recipient RIBs.";
} }
must "/routing/ribs/rib[name=current()/name]/" must "/routing/ribs/rib[name=current()/rib-name]/"
+ "address-family=../../address-family" { + "address-family=../../address-family" {
error-message "Address family mismatch."; error-message "Address family mismatch.";
description description
"Address family of the recipient RIB MUST match that "Address family of the recipient RIB MUST match that
of the source RIB."; of the source RIB.";
} }
key "rib-name"; key "rib-name";
description description
"Each entry configures a recipient RIB."; "Each entry configures a recipient RIB.";
leaf rib-name { leaf rib-name {
skipping to change at page 44, line 45 skipping to change at page 44, line 48
} }
} }
} }
} }
/* RPC methods */ /* RPC methods */
rpc active-route { rpc active-route {
description description
"Return the active route that a routing-instance uses for "Return the active route that a routing-instance uses for
sending packets to a destination address. sending packets to a destination address.";
";
input { input {
leaf routing-instance-id { leaf routing-instance-name {
type routing-instance-state-ref; type routing-instance-state-ref;
mandatory "true"; mandatory "true";
description description
"Identifier of the routing instance whose forwarding "Name of the routing instance whose forwarding information
information base is being queried. base is being queried.
If the routing instance with 'id' equal to If the routing instance with name equal to the value of
'routing-instance-id' doesn't exist, then this operation this parameter doesn't exist, then this operation SHALL
SHALL fail with error-tag 'data-missing' and error-app-tag fail with error-tag 'data-missing' and error-app-tag
'routing-instance-not-found'. 'routing-instance-not-found'.";
";
} }
container destination-address { container destination-address {
description description
"Network layer destination address. "Network layer destination address.
Address family specific modules MUST augment this Address family specific modules MUST augment this
container with a leaf named 'address'. container with a leaf named 'address'.";
";
uses address-family; uses address-family;
} }
} }
output { output {
container route { container route {
description description
"The active route for the specified destination. "The active route for the specified destination.
If the routing instance has no active route for the If the routing instance has no active route for the
destination address, no output is returned - the server destination address, no output is returned - the server
SHALL send an <rpc-reply> containing a single element SHALL send an <rpc-reply> containing a single element
<ok>. <ok>.
Address family specific modules MUST augment this list Address family specific modules MUST augment this list
with appropriate route contents. with appropriate route contents.";
";
uses address-family; uses address-family;
uses nexthop-content; uses next-hop-content;
uses route-metadata; uses route-metadata;
} }
} }
} }
rpc route-count { rpc route-count {
description description
"Return the current number of routes in a RIB. "Return the current number of routes in a RIB.";
If the RIB with 'id' equal to 'rib-id' doesn't exist, then
this operation SHALL fail with error-tag 'data-missing' and
error-app-tag 'rib-not-found'.
";
input { input {
leaf rib-id { leaf rib-name {
type rib-state-ref; type rib-state-ref;
mandatory "true"; mandatory "true";
description description
"Identifier of the RIB."; "Name of the RIB.
If the RIB with name equal to the value of this parameter
doesn't exist, then this operation SHALL fail with
error-tag 'data-missing' and error-app-tag
'rib-not-found'.";
} }
} }
output { output {
leaf number-of-routes { leaf number-of-routes {
type uint64; type uint64;
mandatory "true"; mandatory "true";
description description
"Number of routes in the RIB."; "Number of routes in the RIB.";
} }
} }
} }
} }
<CODE ENDS> <CODE ENDS>
8. IPv4 Unicast Routing YANG Module 8. IPv4 Unicast Routing Management YANG Module
RFC Ed.: In this section, replace all occurrences of 'XXXX' with the RFC Ed.: In this section, replace all occurrences of 'XXXX' with the
actual RFC number and all occurrences of the revision date below with actual RFC number and all occurrences of the revision date below with
the date of RFC publication (and remove this note). the date of RFC publication (and remove this note).
<CODE BEGINS> file "ietf-ipv4-unicast-routing@2013-11-07.yang" <CODE BEGINS> file "ietf-ipv4-unicast-routing@2014-01-10.yang"
module ietf-ipv4-unicast-routing { module ietf-ipv4-unicast-routing {
namespace "urn:ietf:params:xml:ns:yang:ietf-ipv4-unicast-routing"; namespace "urn:ietf:params:xml:ns:yang:ietf-ipv4-unicast-routing";
prefix "v4ur"; prefix "v4ur";
import ietf-routing { import ietf-routing {
prefix "rt"; prefix "rt";
} }
import ietf-inet-types { import ietf-inet-types {
prefix "inet"; prefix "inet";
} }
organization organization
"IETF NETMOD (NETCONF Data Modeling Language) Working Group"; "IETF NETMOD (NETCONF Data Modeling Language) Working Group";
contact contact
"WG Web: <http://tools.ietf.org/wg/netmod/> "WG Web: <http://tools.ietf.org/wg/netmod/>
WG List: <mailto:netmod@ietf.org> WG List: <mailto:netmod@ietf.org>
WG Chair: David Kessens WG Chair: David Kessens
<mailto:david.kessens@nsn.com> <mailto:david.kessens@nsn.com>
WG Chair: Juergen Schoenwaelder WG Chair: Juergen Schoenwaelder
<mailto:j.schoenwaelder@jacobs-university.de> <mailto:j.schoenwaelder@jacobs-university.de>
Editor: Ladislav Lhotka Editor: Ladislav Lhotka
<mailto:lhotka@nic.cz> <mailto:lhotka@nic.cz>";
";
description description
"This YANG module augments the 'ietf-routing' module with basic "This YANG module augments the 'ietf-routing' module with basic
configuration and operational state data for IPv4 unicast configuration and operational state data for IPv4 unicast
routing. routing.
Copyright (c) 2013 IETF Trust and the persons identified as Copyright (c) 2013 IETF Trust and the persons identified as
authors of the code. All rights reserved. authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with or Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject to without modification, is permitted pursuant to, and subject to
the license terms contained in, the Simplified BSD License set the license terms contained in, the Simplified BSD License set
forth in Section 4.c of the IETF Trust's Legal Provisions forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents Relating to IETF Documents
(http://trustee.ietf.org/license-info). (http://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC XXXX; see the This version of this YANG module is part of RFC XXXX; see the
RFC itself for full legal notices. RFC itself for full legal notices.";
";
revision 2013-11-07 { revision 2014-01-10 {
description description
"Initial revision."; "Initial revision.";
reference reference
"RFC XXXX: A YANG Data Model for Routing Management"; "RFC XXXX: A YANG Data Model for Routing Management";
} }
/* Identities */ /* Identities */
identity ipv4-unicast { identity ipv4-unicast {
base rt:ipv4; base rt:ipv4;
skipping to change at page 48, line 46 skipping to change at page 48, line 44
description description
"This leaf augments an IPv4 unicast route."; "This leaf augments an IPv4 unicast route.";
leaf destination-prefix { leaf destination-prefix {
type inet:ipv4-prefix; type inet:ipv4-prefix;
description description
"IPv4 destination prefix."; "IPv4 destination prefix.";
} }
} }
augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route/" augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route/"
+ "rt:nexthop-options/rt:simple-nexthop" { + "rt:next-hop-options/rt:simple-next-hop" {
when "../../rt:address-family = 'v4ur:ipv4-unicast'" { when "../../rt:address-family = 'v4ur:ipv4-unicast'" {
description description
"This augment is valid only for IPv4 unicast."; "This augment is valid only for IPv4 unicast.";
} }
description description
"This leaf augments the 'simple-nexthop' case of IPv4 unicast "This leaf augments the 'simple-next-hop' case of IPv4 unicast
routes."; routes.";
leaf gateway {
leaf next-hop {
type inet:ipv4-address; type inet:ipv4-address;
description description
"IPv4 address of the gateway."; "IPv4 address of the next-hop.";
} }
} }
augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route/" augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route/"
+ "rt:nexthop-options/rt:nexthop-list/rt:nexthop" { + "rt:next-hop-options/rt:next-hop-list/rt:next-hop-list/"
when "../../../rt:address-family = 'v4ur:ipv4-unicast'" { + "rt:next-hop" {
when "../../../../rt:address-family = 'v4ur:ipv4-unicast'" {
description description
"This augment is valid only for IPv4 unicast."; "This augment is valid only for IPv4 unicast.";
} }
if-feature rt:multipath-routes;
description description
"This leaf augments the 'nexthop-list' case of IPv4 unicast "This leaf augments the 'next-hop-list' case of IPv4 unicast
routes."; routes.";
leaf address { leaf address {
type inet:ipv4-address; type inet:ipv4-address;
description description
"IPv4 address of the nexthop."; "IPv4 address of the next-hop.";
} }
} }
/* Configuration data */ /* Configuration data */
augment "/rt:routing/rt:routing-instance/rt:routing-protocols/" augment "/rt:routing/rt:routing-instance/rt:routing-protocols/"
+ "rt:routing-protocol/rt:static-routes" { + "rt:routing-protocol/rt:static-routes" {
description description
"This augment defines the configuration of the 'static' "This augment defines the configuration of the 'static'
pseudo-protocol with data specific to IPv4 unicast."; pseudo-protocol with data specific to IPv4 unicast.";
skipping to change at page 50, line 5 skipping to change at page 50, line 5
ordered-by "user"; ordered-by "user";
description description
"A user-ordered list of static routes."; "A user-ordered list of static routes.";
leaf id { leaf id {
type uint32 { type uint32 {
range "1..max"; range "1..max";
} }
description description
"Unique numeric identifier of the route. "Unique numeric identifier of the route.
This value is unrelated to system-assigned keys of This value is unrelated to system-assigned 'id'
routes in RIBs. parameters of routes in RIBs.";
";
} }
leaf description { leaf description {
type string; type string;
description description
"Textual description of the route."; "Textual description of the route.";
} }
leaf destination-prefix { leaf destination-prefix {
type inet:ipv4-prefix; type inet:ipv4-prefix;
mandatory "true"; mandatory "true";
description description
"IPv4 destination prefix."; "IPv4 destination prefix.";
} }
choice nexthop-options { choice next-hop-options {
mandatory "true"; mandatory "true";
description description
"Options for expressing the nexthop in static routes."; "Options for expressing the next-hop in static routes.";
case special-nexthop { case special-next-hop {
uses rt:special-nexthop; uses rt:special-next-hop;
} }
case simple-nexthop { case simple-next-hop {
leaf gateway { leaf next-hop {
type inet:ipv4-address; type inet:ipv4-address;
description description
"IPv4 address of the gateway."; "IPv4 address of the next-hop.";
} }
leaf outgoing-interface { leaf outgoing-interface {
type leafref { type leafref {
path "../../../../../../rt:interfaces/rt:interface/" path "../../../../../../rt:interfaces/rt:interface/"
+ "rt:name"; + "rt:name";
} }
description description
"Name of the outgoing interface. "Name of the outgoing interface.
Only interfaces configured for the parent routing Only interfaces configured for the ancestor routing
instance can be given. instance can be given.";
";
} }
} }
case nexthop-list { case next-hop-list {
if-feature rt:multipath-routes; if-feature rt:multipath-routes;
list nexthop { container next-hop-list {
key "id"; list next-hop {
description key "id";
"An entry of a nexthop list.";
leaf id {
type uint32;
description description
"Unique numeric identifier of the entry. "An entry of a next-hop list.";
leaf id {
type uint32;
description
"Unique numeric identifier of the entry.
This value is unrelated to system-assigned keys of This value is unrelated to system-assigned 'id'
nexthops in RIBs. parameters of next-hops in RIBs.";
";
}
leaf address {
type inet:ipv4-address;
description
"IPv4 address of the nexthop.";
}
leaf outgoing-interface {
type leafref {
path "../../../../../../../rt:interfaces/"
+ "rt:interface/rt:name";
} }
description leaf address {
"Name of the outgoing interface. type inet:ipv4-address;
description
"IPv4 address of the next-hop.";
}
leaf outgoing-interface {
type leafref {
path "../../../../../../../../rt:interfaces/"
+ "rt:interface/rt:name";
}
description
"Name of the outgoing interface.
Only interfaces configured for the parent routing Only interfaces configured for the ancestor
instance can be given. routing instance can be given.";
"; }
uses rt:next-hop-classifiers;
} }
uses rt:nexthop-classifiers;
} }
} }
} }
} }
} }
} }
/* RPC methods */ /* RPC methods */
augment "/rt:active-route/rt:input/rt:destination-address" { augment "/rt:active-route/rt:input/rt:destination-address" {
skipping to change at page 52, line 22 skipping to change at page 52, line 19
description description
"This leaf augments the reply to the 'rt:active-route' "This leaf augments the reply to the 'rt:active-route'
operation."; operation.";
leaf destination-prefix { leaf destination-prefix {
type inet:ipv4-prefix; type inet:ipv4-prefix;
description description
"IPv4 destination prefix."; "IPv4 destination prefix.";
} }
} }
augment "/rt:active-route/rt:output/rt:route/rt:nexthop-options/" augment "/rt:active-route/rt:output/rt:route/rt:next-hop-options/"
+ "rt:simple-nexthop" { + "rt:simple-next-hop" {
when "rt:address-family='v4ur:ipv4-unicast'" { when "rt:address-family='v4ur:ipv4-unicast'" {
description description
"This augment is valid only for IPv4 unicast."; "This augment is valid only for IPv4 unicast.";
} }
description description
"This leaf augments the 'simple-nexthop' case in the reply to "This leaf augments the 'simple-next-hop' case in the reply to
the 'rt:active-route' operation."; the 'rt:active-route' operation.";
leaf gateway { leaf next-hop {
type inet:ipv4-address; type inet:ipv4-address;
description description
"IPv4 address of the gateway."; "IPv4 address of the next-hop.";
} }
} }
augment "/rt:active-route/rt:output/rt:route/rt:nexthop-options/" augment "/rt:active-route/rt:output/rt:route/rt:next-hop-options/"
+ "rt:nexthop-list/rt:nexthop" { + "rt:next-hop-list/rt:next-hop-list/rt:next-hop" {
when "../rt:address-family='v4ur:ipv4-unicast'" { when "../../rt:address-family='v4ur:ipv4-unicast'" {
description description
"This augment is valid only for IPv4 unicast."; "This augment is valid only for IPv4 unicast.";
} }
if-feature rt:multipath-routes; if-feature rt:multipath-routes;
description description
"This leaf augments the 'nexthop-list' case in the reply to the "This leaf augments the 'next-hop-list' case in the reply to
'rt:active-route' operation."; the 'rt:active-route' operation.";
leaf address { leaf address {
type inet:ipv4-address; type inet:ipv4-address;
description description
"IPv4 address of the nexthop."; "IPv4 address of the next-hop.";
} }
} }
} }
<CODE ENDS> <CODE ENDS>
9. IPv6 Unicast Routing YANG Module 9. IPv6 Unicast Routing Management YANG Module
RFC Ed.: In this section, replace all occurrences of 'XXXX' with the RFC Ed.: In this section, replace all occurrences of 'XXXX' with the
actual RFC number and all occurrences of the revision date below with actual RFC number and all occurrences of the revision date below with
the date of RFC publication (and remove this note). the date of RFC publication (and remove this note).
<CODE BEGINS> file "ietf-ipv6-unicast-routing@2013-11-07.yang" <CODE BEGINS> file "ietf-ipv6-unicast-routing@2014-01-10.yang"
module ietf-ipv6-unicast-routing { module ietf-ipv6-unicast-routing {
namespace "urn:ietf:params:xml:ns:yang:ietf-ipv6-unicast-routing"; namespace "urn:ietf:params:xml:ns:yang:ietf-ipv6-unicast-routing";
prefix "v6ur"; prefix "v6ur";
import ietf-routing { import ietf-routing {
prefix "rt"; prefix "rt";
} }
skipping to change at page 54, line 39 skipping to change at page 54, line 39
} }
import ietf-ip { import ietf-ip {
prefix "ip"; prefix "ip";
} }
organization organization
"IETF NETMOD (NETCONF Data Modeling Language) Working Group"; "IETF NETMOD (NETCONF Data Modeling Language) Working Group";
contact contact
"WG Web: <http://tools.ietf.org/wg/netmod/> "WG Web: <http://tools.ietf.org/wg/netmod/>
WG List: <mailto:netmod@ietf.org> WG List: <mailto:netmod@ietf.org>
WG Chair: David Kessens WG Chair: David Kessens
<mailto:david.kessens@nsn.com> <mailto:david.kessens@nsn.com>
WG Chair: Juergen Schoenwaelder WG Chair: Juergen Schoenwaelder
<mailto:j.schoenwaelder@jacobs-university.de> <mailto:j.schoenwaelder@jacobs-university.de>
Editor: Ladislav Lhotka Editor: Ladislav Lhotka
<mailto:lhotka@nic.cz> <mailto:lhotka@nic.cz>";
";
description description
"This YANG module augments the 'ietf-routing' module with basic "This YANG module augments the 'ietf-routing' module with basic
configuration and operational state data for IPv6 unicast configuration and operational state data for IPv6 unicast
routing. routing.
Copyright (c) 2013 IETF Trust and the persons identified as Copyright (c) 2013 IETF Trust and the persons identified as
authors of the code. All rights reserved. authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with or Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject to without modification, is permitted pursuant to, and subject to
the license terms contained in, the Simplified BSD License set the license terms contained in, the Simplified BSD License set
forth in Section 4.c of the IETF Trust's Legal Provisions forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents Relating to IETF Documents
(http://trustee.ietf.org/license-info). (http://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC XXXX; see the This version of this YANG module is part of RFC XXXX; see the
RFC itself for full legal notices. RFC itself for full legal notices.";
";
revision 2013-11-07 { revision 2014-01-10 {
description description
"Initial revision."; "Initial revision.";
reference reference
"RFC XXXX: A YANG Data Model for Routing Management"; "RFC XXXX: A YANG Data Model for Routing Management";
} }
/* Identities */ /* Identities */
identity ipv6-unicast { identity ipv6-unicast {
base rt:ipv6; base rt:ipv6;
description description
"This identity represents the IPv6 unicast address family."; "This identity represents the IPv6 unicast address family.";
} }
/* Operational state data */ /* Operational state data */
augment "/rt:routing-state/rt:routing-instance/rt:interfaces/" augment "/rt:routing-state/rt:routing-instance/rt:interfaces/"
+ "rt:interface" { + "rt:interface" {
when "/if:interfaces/if:interface[if:name=current()/rt:name]/"
+ "ip:ipv6/ip:enabled='true'" {
description
"This augment is only valid for router interfaces with
enabled IPv6.";
}
description description
"IPv6-specific parameters of router interfaces."; "IPv6-specific parameters of router interfaces.";
container ipv6-router-advertisements { container ipv6-router-advertisements {
description description
"Parameters of IPv6 Router Advertisements."; "Parameters of IPv6 Router Advertisements.";
leaf send-advertisements { leaf send-advertisements {
type boolean; type boolean;
default "false"; default "false";
description description
"A flag indicating whether or not the router sends periodic "A flag indicating whether or not the router sends periodic
Router Advertisements and responds to Router Router Advertisements and responds to Router
Solicitations."; Solicitations.";
reference reference
"RFC 4861: Neighbor Discovery for IP version 6 (IPv6) - "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
AdvSendAdvertisements."; AdvSendAdvertisements.";
skipping to change at page 56, line 44 skipping to change at page 56, line 35
description description
"The minimum time allowed between sending unsolicited "The minimum time allowed between sending unsolicited
multicast Router Advertisements from the interface. multicast Router Advertisements from the interface.
The default value to be used operationally if this leaf is The default value to be used operationally if this leaf is
not configured is determined as follows: not configured is determined as follows:
- if max-rtr-adv-interval >= 9 seconds, the default value - if max-rtr-adv-interval >= 9 seconds, the default value
is 0.33 * max-rtr-adv-interval; is 0.33 * max-rtr-adv-interval;
- otherwise it is 0.75 * max-rtr-adv-interval. - otherwise it is 0.75 * max-rtr-adv-interval.";
";
reference reference
"RFC 4861: Neighbor Discovery for IP version 6 (IPv6) - "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
MinRtrAdvInterval."; MinRtrAdvInterval.";
} }
leaf managed-flag { leaf managed-flag {
type boolean; type boolean;
default "false"; default "false";
description description
"The boolean value to be placed in the 'Managed address "The boolean value to be placed in the 'Managed address
configuration' flag field in the Router Advertisement."; configuration' flag field in the Router Advertisement.";
skipping to change at page 58, line 21 skipping to change at page 58, line 12
default "64"; default "64";
description description
"The default value to be placed in the Cur Hop Limit field "The default value to be placed in the Cur Hop Limit field
in the Router Advertisement messages sent by the router. in the Router Advertisement messages sent by the router.
The value should be set to the current diameter of the The value should be set to the current diameter of the
Internet. The value zero means unspecified (by this Internet. The value zero means unspecified (by this
router). router).
The default SHOULD be set to the value specified in IANA The default SHOULD be set to the value specified in IANA
Assigned Numbers that was in effect at the time of Assigned Numbers that was in effect at the time of
implementation. implementation.";
";
reference reference
"RFC 4861: Neighbor Discovery for IP version 6 (IPv6) - "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
AdvCurHopLimit. AdvCurHopLimit.
IANA: IP Parameters, IANA: IP Parameters,
http://www.iana.org/assignments/ip-parameters http://www.iana.org/assignments/ip-parameters";
";
} }
leaf default-lifetime { leaf default-lifetime {
type uint16 { type uint16 {
range "0..9000"; range "0..9000";
} }
units "seconds"; units "seconds";
description description
"The value to be placed in the Router Lifetime field of "The value to be placed in the Router Lifetime field of
Router Advertisements sent from the interface, in seconds. Router Advertisements sent from the interface, in seconds.
MUST be either zero or between max-rtr-adv-interval and MUST be either zero or between max-rtr-adv-interval and
9000 seconds. A value of zero indicates that the router is 9000 seconds. A value of zero indicates that the router is
not to be used as a default router. These limits may be not to be used as a default router. These limits may be
overridden by specific documents that describe how IPv6 overridden by specific documents that describe how IPv6
operates over different link layers. operates over different link layers.
If this parameter is not configured, a value of 3 * If this parameter is not configured, a value of 3 *
max-rtr-adv-interval SHOULD be used. max-rtr-adv-interval SHOULD be used.";
";
reference reference
"RFC 4861: Neighbor Discovery for IP version 6 (IPv6) - "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
AdvDefaultLifeTime."; AdvDefaultLifeTime.";
} }
container prefix-list { container prefix-list {
description description
"A list of prefixes that are placed in Prefix Information "A list of prefixes that are placed in Prefix Information
options in Router Advertisement messages sent from the options in Router Advertisement messages sent from the
interface. interface.
By default, these are all prefixes that the router By default, these are all prefixes that the router
advertises via routing protocols as being on-link for the advertises via routing protocols as being on-link for the
interface from which the advertisement is sent. interface from which the advertisement is sent.
The link-local prefix SHOULD NOT be included in the list The link-local prefix SHOULD NOT be included in the list
of advertised prefixes. of advertised prefixes.";
";
reference reference
"RFC 4861: Neighbor Discovery for IP version 6 (IPv6) - "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
AdvPrefixList."; AdvPrefixList.";
list prefix { list prefix {
key "prefix-spec"; key "prefix-spec";
description description
"Advertised prefix entry with parameters."; "Advertised prefix entry with parameters.";
leaf prefix-spec { leaf prefix-spec {
type inet:ipv6-prefix; type inet:ipv6-prefix;
description description
"IPv6 address prefix."; "IPv6 address prefix.";
} }
leaf valid-lifetime { leaf valid-lifetime {
type uint32; type uint32;
units "seconds"; units "seconds";
default "2592000"; default "2592000";
description description
"The value to be placed in the Valid Lifetime in the "The value to be placed in the Valid Lifetime in the
Prefix Information option. The designated value of all Prefix Information option. The designated value of all
1's (0xffffffff) represents infinity. 1's (0xffffffff) represents infinity.";
";
reference reference
"RFC 4861: Neighbor Discovery for IP version 6 (IPv6) - "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
AdvValidLifetime."; AdvValidLifetime.";
} }
leaf on-link-flag { leaf on-link-flag {
type boolean; type boolean;
default "true"; default "true";
description description
"The value to be placed in the on-link flag ('L-bit') "The value to be placed in the on-link flag ('L-bit')
field in the Prefix Information option."; field in the Prefix Information option.";
skipping to change at page 60, line 47 skipping to change at page 60, line 33
description description
"This leaf augments an IPv6 unicast route."; "This leaf augments an IPv6 unicast route.";
leaf destination-prefix { leaf destination-prefix {
type inet:ipv6-prefix; type inet:ipv6-prefix;
description description
"IPv6 destination prefix."; "IPv6 destination prefix.";
} }
} }
augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route/" augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route/"
+ "rt:nexthop-options/rt:simple-nexthop" { + "rt:next-hop-options/rt:simple-next-hop" {
when "../../rt:address-family = 'v6ur:ipv6-unicast'" { when "../../rt:address-family = 'v6ur:ipv6-unicast'" {
description description
"This augment is valid only for IPv6 unicast."; "This augment is valid only for IPv6 unicast.";
} }
description description
"This leaf augments the 'simple-nexthop' case of IPv6 unicast "This leaf augments the 'simple-next-hop' case of IPv6 unicast
routes."; routes.";
leaf gateway { leaf next-hop {
type inet:ipv6-address; type inet:ipv6-address;
description description
"IPv6 address of the gateway."; "IPv6 address of the next-hop.";
} }
} }
augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route/" augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route/"
+ "rt:nexthop-options/rt:nexthop-list/rt:nexthop" { + "rt:next-hop-options/rt:next-hop-list/rt:next-hop-list/"
when "../../../rt:address-family = 'v6ur:ipv6-unicast'" { + "rt:next-hop" {
when "../../../../rt:address-family = 'v6ur:ipv6-unicast'" {
description description
"This augment is valid only for IPv6 unicast."; "This augment is valid only for IPv6 unicast.";
} }
if-feature rt:multipath-routes;
description description
"This leaf augments the 'nexthop-list' case of IPv6 unicast "This leaf augments the 'next-hop-list' case of IPv6 unicast
routes."; routes.";
leaf address { leaf address {
type inet:ipv6-address; type inet:ipv6-address;
description description
"IPv6 address of the nexthop."; "IPv6 address of the next-hop.";
} }
} }
/* Configuration data */ /* Configuration data */
augment augment
"/rt:routing/rt:routing-instance/rt:interfaces/rt:interface" { "/rt:routing/rt:routing-instance/rt:interfaces/rt:interface" {
when "/if:interfaces/if:interface[if:name=current()/rt:name]/" when "/if:interfaces/if:interface[if:name=current()/rt:name]/"
+ "ip:ipv6/ip:enabled='true'" { + "ip:ipv6/ip:enabled='true'" {
description description
skipping to change at page 61, line 48 skipping to change at page 61, line 36
enabled IPv6."; enabled IPv6.";
} }
description description
"Configuration of IPv6-specific parameters of router "Configuration of IPv6-specific parameters of router
interfaces."; interfaces.";
container ipv6-router-advertisements { container ipv6-router-advertisements {
description description
"Configuration of IPv6 Router Advertisements. "Configuration of IPv6 Router Advertisements.
See the corresponding parameters under /rt:routing-state for See the corresponding parameters under /rt:routing-state for
detailed descriptions and references. detailed descriptions and references.";
";
leaf send-advertisements { leaf send-advertisements {
type boolean; type boolean;
default "false"; default "false";
description description
"A flag indicating whether or not the router sends periodic "A flag indicating whether or not the router sends periodic
Router Advertisements and responds to Router Router Advertisements and responds to Router
Solicitations."; Solicitations.";
} }
leaf max-rtr-adv-interval { leaf max-rtr-adv-interval {
type uint16 { type uint16 {
skipping to change at page 62, line 32 skipping to change at page 62, line 19
range "3..1350"; range "3..1350";
} }
units "seconds"; units "seconds";
must ". <= 0.75 * ../max-rtr-adv-interval" { must ". <= 0.75 * ../max-rtr-adv-interval" {
description description
"The value MUST NOT be greater than 75 % of "The value MUST NOT be greater than 75 % of
'max-rtr-adv-interval'."; 'max-rtr-adv-interval'.";
} }
description description
"The minimum time allowed between sending unsolicited "The minimum time allowed between sending unsolicited
multicast Router Advertisements from the interface. multicast Router Advertisements from the interface.";
";
} }
leaf managed-flag { leaf managed-flag {
type boolean; type boolean;
default "false"; default "false";
description description
"The boolean value to be placed in the 'Managed address "The boolean value to be placed in the 'Managed address
configuration' flag field in the Router Advertisement."; configuration' flag field in the Router Advertisement.";
} }
leaf other-config-flag { leaf other-config-flag {
type boolean; type boolean;
skipping to change at page 63, line 33 skipping to change at page 63, line 20
description description
"The value to be placed in the Retrans Timer field in the "The value to be placed in the Retrans Timer field in the
Router Advertisement messages sent by the router. The Router Advertisement messages sent by the router. The
value zero means unspecified (by this router)."; value zero means unspecified (by this router).";
} }
leaf cur-hop-limit { leaf cur-hop-limit {
type uint8; type uint8;
default "64"; default "64";
description description
"The default value to be placed in the Cur Hop Limit field "The default value to be placed in the Cur Hop Limit field
in the Router Advertisement messages sent by the router. in the Router Advertisement messages sent by the
"; router.";
} }
leaf default-lifetime { leaf default-lifetime {
type uint16 { type uint16 {
range "0..9000"; range "0..9000";
} }
units "seconds"; units "seconds";
description description
"The value to be placed in the Router Lifetime field of "The value to be placed in the Router Lifetime field of
Router Advertisements sent from the interface, in seconds. Router Advertisements sent from the interface, in
"; seconds.";
} }
container prefix-list { container prefix-list {
description description
"Configuration of prefixes to be placed in Prefix "Configuration of prefixes to be placed in Prefix
Information options in Router Advertisement messages sent Information options in Router Advertisement messages sent
from the interface. from the interface.
Prefixes that are advertised by default but do not have Prefixes that are advertised by default but do not have
their entries in the child 'prefix' list are advertised their entries in the child 'prefix' list are advertised
with the default values of all parameters. with the default values of all parameters.";
";
list prefix { list prefix {
key "prefix-spec"; key "prefix-spec";
description description
"Advertised prefix entry."; "Advertised prefix entry.";
leaf prefix-spec { leaf prefix-spec {
type inet:ipv6-prefix; type inet:ipv6-prefix;
description description
"IPv6 address prefix."; "IPv6 address prefix.";
} }
choice control-adv-prefixes { choice control-adv-prefixes {
skipping to change at page 64, line 30 skipping to change at page 64, line 14
description description
"The prefix either may be explicitly removed from the "The prefix either may be explicitly removed from the
set of advertised prefixes, or parameters with which set of advertised prefixes, or parameters with which
it is advertised may be specified (default case)."; it is advertised may be specified (default case).";
leaf no-advertise { leaf no-advertise {
type empty; type empty;
description description
"The prefix will not be advertised. "The prefix will not be advertised.
This can be used for removing the prefix from the This can be used for removing the prefix from the
default set of advertised prefixes. default set of advertised prefixes.";
";
} }
case advertise { case advertise {
leaf valid-lifetime { leaf valid-lifetime {
type uint32; type uint32;
units "seconds"; units "seconds";
default "2592000"; default "2592000";
description description
"The value to be placed in the Valid Lifetime in "The value to be placed in the Valid Lifetime in
the Prefix Information option."; the Prefix Information option.";
} }
skipping to change at page 65, line 49 skipping to change at page 65, line 34
ordered-by "user"; ordered-by "user";
description description
"A user-ordered list of static routes."; "A user-ordered list of static routes.";
leaf id { leaf id {
type uint32 { type uint32 {
range "1..max"; range "1..max";
} }
description description
"Unique numeric identifier of the route. "Unique numeric identifier of the route.
This value is unrelated to system-assigned keys of This value is unrelated to system-assigned 'id'
routes in RIBs. parameters of routes in RIBs.";
";
} }
leaf description { leaf description {
type string; type string;
description description
"Textual description of the route."; "Textual description of the route.";
} }
leaf destination-prefix { leaf destination-prefix {
type inet:ipv6-prefix; type inet:ipv6-prefix;
mandatory "true"; mandatory "true";
description description
"IPv6 destination prefix."; "IPv6 destination prefix.";
} }
choice nexthop-options { choice next-hop-options {
mandatory "true"; mandatory "true";
description description
"Options for expressing the nexthop in static routes."; "Options for expressing the next-hop in static routes.";
case special-nexthop { case special-next-hop {
uses rt:special-nexthop; uses rt:special-next-hop;
} }
case simple-nexthop { case simple-next-hop {
leaf gateway { leaf next-hop {
type inet:ipv6-address; type inet:ipv6-address;
description description
"IPv6 address of the gateway."; "IPv6 address of the next-hop.";
} }
leaf outgoing-interface { leaf outgoing-interface {
type leafref { type leafref {
path "../../../../../../rt:interfaces/rt:interface/" path "../../../../../../rt:interfaces/rt:interface/"
+ "rt:name"; + "rt:name";
} }
description description
"Name of the outgoing interface. "Name of the outgoing interface.
Only interfaces configured for the parent routing Only interfaces configured for the ancestor routing
instance can be given. instance can be given.";
";
} }
} }
case nexthop-list { case next-hop-list {
if-feature rt:multipath-routes; if-feature rt:multipath-routes;
list nexthop { container next-hop-list {
key "id"; list next-hop {
description key "id";
"An entry of a nexthop list.";
leaf id {
type uint32;
description description
"Unique numeric identifier of the entry. "An entry of a next-hop list.";
leaf id {
type uint32;
description
"Unique numeric identifier of the entry.
This value is unrelated to system-assigned keys of This value is unrelated to system-assigned 'id'
nexthops in RIBs. parameters of next-hops in RIBs.";
";
}
leaf address {
type inet:ipv6-address;
description
"IPv6 address of the nexthop.";
}
leaf outgoing-interface {
type leafref {
path "../../../../../../../rt:interfaces/"
+ "rt:interface/rt:name";
} }
description leaf address {
"Name of the outgoing interface. type inet:ipv6-address;
description
"IPv6 address of the next-hop.";
}
leaf outgoing-interface {
type leafref {
path "../../../../../../../../rt:interfaces/"
+ "rt:interface/rt:name";
}
description
"Name of the outgoing interface.
Only interfaces configured for the parent routing Only interfaces configured for the ancestor
instance can be given. routing instance can be given.";
"; }
uses rt:next-hop-classifiers;
} }
uses rt:nexthop-classifiers;
} }
} }
} }
} }
} }
} }
/* RPC methods */ /* RPC methods */
augment "/rt:active-route/rt:input/rt:destination-address" { augment "/rt:active-route/rt:input/rt:destination-address" {
skipping to change at page 68, line 17 skipping to change at page 67, line 49
description description
"This leaf augments the reply to the 'rt:active-route' "This leaf augments the reply to the 'rt:active-route'
operation."; operation.";
leaf destination-prefix { leaf destination-prefix {
type inet:ipv6-prefix; type inet:ipv6-prefix;
description description
"IPv6 destination prefix."; "IPv6 destination prefix.";
} }
} }
augment "/rt:active-route/rt:output/rt:route/rt:nexthop-options/" augment "/rt:active-route/rt:output/rt:route/rt:next-hop-options/"
+ "rt:simple-nexthop" { + "rt:simple-next-hop" {
when "rt:address-family='v6ur:ipv6-unicast'" { when "rt:address-family='v6ur:ipv6-unicast'" {
description description
"This augment is valid only for IPv6 unicast."; "This augment is valid only for IPv6 unicast.";
} }
description description
"This leaf augments the 'simple-nexthop' case in the reply to "This leaf augments the 'simple-next-hop' case in the reply to
the 'rt:active-route' operation."; the 'rt:active-route' operation.";
leaf gateway { leaf next-hop {
type inet:ipv6-address; type inet:ipv6-address;
description description
"IPv6 address of the gateway."; "IPv6 address of the next-hop.";
} }
} }
augment "/rt:active-route/rt:output/rt:route/rt:nexthop-options/" augment "/rt:active-route/rt:output/rt:route/rt:next-hop-options/"
+ "rt:nexthop-list/rt:nexthop" { + "rt:next-hop-list/rt:next-hop-list/rt:next-hop" {
when "../rt:address-family='v6ur:ipv6-unicast'" { when "../../rt:address-family='v6ur:ipv6-unicast'" {
description description
"This augment is valid only for IPv6 unicast."; "This augment is valid only for IPv6 unicast.";
} }
if-feature rt:multipath-routes; if-feature rt:multipath-routes;
description description
"This leaf augments the 'nexthop-list' case in the reply to the "This leaf augments the 'next-hop-list' case in the reply to
'rt:active-route' operation."; the 'rt:active-route' operation.";
leaf address { leaf address {
type inet:ipv6-address; type inet:ipv6-address;
description description
"IPv6 address of the nexthop."; "IPv6 address of the next-hop.";
} }
} }
} }
<CODE ENDS> <CODE ENDS>
10. IANA Considerations 10. IANA Considerations
RFC Ed.: In this section, replace all occurrences of 'XXXX' with the RFC Ed.: In this section, replace all occurrences of 'XXXX' with the
actual RFC number (and remove this note). actual RFC number (and remove this note).
skipping to change at page 73, line 31 skipping to change at page 73, line 31
September 2010. September 2010.
[RFC6241] Enns, R., Bjorklund, M., Schoenwaelder, J., and A. [RFC6241] Enns, R., Bjorklund, M., Schoenwaelder, J., and A.
Bierman, "NETCONF Configuration Protocol", RFC 6241, Bierman, "NETCONF Configuration Protocol", RFC 6241,
June 2011. June 2011.
[RFC6991] Schoenwaelder, J., Ed., "Common YANG Data Types", [RFC6991] Schoenwaelder, J., Ed., "Common YANG Data Types",
RFC 6991, July 2013. RFC 6991, July 2013.
[YANG-IF] Bjorklund, M., "A YANG Data Model for Interface [YANG-IF] Bjorklund, M., "A YANG Data Model for Interface
Management", draft-ietf-netmod-interfaces-cfg-13 (work in Management", draft-ietf-netmod-interfaces-cfg-15 (work in
progress), November 2013. progress), December 2013.
[YANG-IP] Bjorklund, M., "A YANG Data Model for IP Management", [YANG-IP] Bjorklund, M., "A YANG Data Model for IP Management",
draft-ietf-netmod-ip-cfg-11 (work in progress), draft-ietf-netmod-ip-cfg-12 (work in progress),
October 2013. January 2014.
13.2. Informative References 13.2. Informative References
[RFC6087] Bierman, A., "Guidelines for Authors and Reviewers of YANG [RFC6087] Bierman, A., "Guidelines for Authors and Reviewers of YANG
Data Model Documents", RFC 6087, January 2011. Data Model Documents", RFC 6087, January 2011.
[RFC6242] Wasserman, M., "Using the NETCONF Protocol over Secure [RFC6242] Wasserman, M., "Using the NETCONF Protocol over Secure
Shell (SSH)", RFC 6242, June 2011. Shell (SSH)", RFC 6242, June 2011.
Appendix A. The Complete Data Trees Appendix A. The Complete Data Trees
skipping to change at page 74, line 26 skipping to change at page 74, line 26
+--rw routing +--rw routing
+--rw routing-instance* [name] +--rw routing-instance* [name]
| +--rw name string | +--rw name string
| +--rw type? identityref | +--rw type? identityref
| +--rw enabled? boolean | +--rw enabled? boolean
| +--rw router-id? yang:dotted-quad | +--rw router-id? yang:dotted-quad
| +--rw description? string | +--rw description? string
| +--rw default-ribs {multiple-ribs}? | +--rw default-ribs {multiple-ribs}?
| | +--rw default-rib* [address-family] | | +--rw default-rib* [address-family]
| | +--rw address-family identityref | | +--rw address-family identityref
| | +--rw name string | | +--rw rib-name string
| +--rw interfaces | +--rw interfaces
| | +--rw interface* [name] | | +--rw interface* [name]
| | +--rw name if:interface-ref | | +--rw name if:interface-ref
| | +--rw v6ur:ipv6-router-advertisements | | +--rw v6ur:ipv6-router-advertisements
| | +--rw v6ur:send-advertisements? boolean | | +--rw v6ur:send-advertisements? boolean
| | +--rw v6ur:max-rtr-adv-interval? uint16 | | +--rw v6ur:max-rtr-adv-interval? uint16
| | +--rw v6ur:min-rtr-adv-interval? uint16 | | +--rw v6ur:min-rtr-adv-interval? uint16
| | +--rw v6ur:managed-flag? boolean | | +--rw v6ur:managed-flag? boolean
| | +--rw v6ur:other-config-flag? boolean | | +--rw v6ur:other-config-flag? boolean
| | +--rw v6ur:link-mtu? uint32 | | +--rw v6ur:link-mtu? uint32
| | +--rw v6ur:reachable-time? uint32 | | +--rw v6ur:reachable-time? uint32
| | +--rw v6ur:retrans-timer? uint32 | | +--rw v6ur:retrans-timer? uint32
| | +--rw v6ur:cur-hop-limit? uint8 | | +--rw v6ur:cur-hop-limit? uint8
| | +--rw v6ur:default-lifetime? uint16 | | +--rw v6ur:default-lifetime? uint16
| | +--rw v6ur:prefix-list | | +--rw v6ur:prefix-list
| | +--rw v6ur:prefix* [prefix-spec] | | +--rw v6ur:prefix* [prefix-spec]
| | +--rw v6ur:prefix-spec inet:ipv6-prefix | | +--rw v6ur:prefix-spec inet:ipv6-prefix
| | +--rw (control-adv-prefixes)? | | +--rw (control-adv-prefixes)?
| | +--:(no-advertise) | | +--:(no-advertise)
| | | +--rw v6ur:no-advertise? empty | | | +--rw v6ur:no-advertise? empty
| | +--:(advertise) | | +--:(advertise)
| | +--rw v6ur:valid-lifetime? uint32 | | +--rw v6ur:valid-lifetime? uint32
| | +--rw v6ur:on-link-flag? boolean | | +--rw v6ur:on-link-flag? boolean
| | +--rw v6ur:preferred-lifetime? uint32 | | +--rw v6ur:preferred-lifetime? uint32
| | +--rw v6ur:autonomous-flag? boolean | | +--rw v6ur:autonomous-flag? boolean
| +--rw routing-protocols | +--rw routing-protocols
| +--rw routing-protocol* [name] | +--rw routing-protocol* [name]
| +--rw name string | +--rw name string
| +--rw description? string | +--rw description? string
| +--rw enabled? boolean | +--rw enabled? boolean
| +--rw type identityref | +--rw type identityref
| +--rw connected-ribs {multiple-ribs}? | +--rw connected-ribs {multiple-ribs}?
| | +--rw connected-rib* [rib-name] | | +--rw connected-rib* [rib-name]
| | +--rw rib-name rib-ref | | +--rw rib-name rib-ref
| | +--rw import-filter? route-filter-ref | | +--rw import-filter? route-filter-ref
| | +--rw export-filter? route-filter-ref | | +--rw export-filter? route-filter-ref
| +--rw static-routes | +--rw static-routes
| +--rw v4ur:ipv4 | +--rw v4ur:ipv4
| | +--rw v4ur:route* [id] | | +--rw v4ur:route* [id]
| | +--rw v4ur:id uint32 | | +--rw v4ur:id uint32
| | +--rw v4ur:description? string | | +--rw v4ur:description? string
| | +--rw v4ur:destination-prefix inet:ipv4-prefix | | +--rw v4ur:destination-prefix inet:ipv4-prefix
| | +--rw (nexthop-options) | | +--rw (next-hop-options)
| | +--:(special-nexthop) | | +--:(special-next-hop)
| | | +--rw v4ur:special-nexthop? enumeration | | | +--rw v4ur:special-next-hop? enumeration
| | +--:(simple-nexthop) | | +--:(simple-next-hop)
| | | +--rw v4ur:gateway? inet:ipv4-address | | | +--rw v4ur:next-hop? inet:ipv4-address
| | | +--rw v4ur:outgoing-interface? leafref | | | +--rw v4ur:outgoing-interface? leafref
| | +--:(nexthop-list) {rt:multipath-routes}? | | +--:(next-hop-list) {rt:multipath-routes}?
| | +--rw v4ur:nexthop* [id] | | +--rw v4ur:next-hop-list
| | +--rw v4ur:id uint32 | | +--rw v4ur:next-hop* [id]
| | +--rw v4ur:address? inet:ipv4-address | | +--rw v4ur:id uint32
| | +--rw v4ur:outgoing-interface? leafref | | +--rw v4ur:address?
| | +--rw v4ur:priority? enumeration | | +--rw v4ur:outgoing-interface?
| | +--rw v4ur:weight? uint8 | | +--rw v4ur:priority? enumeration
| | +--rw v4ur:weight? uint8
| +--rw v6ur:ipv6 | +--rw v6ur:ipv6
| +--rw v6ur:route* [id] | +--rw v6ur:route* [id]
| +--rw v6ur:id uint32 | +--rw v6ur:id uint32
| +--rw v6ur:description? string | +--rw v6ur:description? string
| +--rw v6ur:destination-prefix inet:ipv6-prefix | +--rw v6ur:destination-prefix inet:ipv6-prefix
| +--rw (nexthop-options) | +--rw (next-hop-options)
| +--:(special-nexthop) | +--:(special-next-hop)
| | +--rw v6ur:special-nexthop? enumeration | | +--rw v6ur:special-next-hop? enumeration
| +--:(simple-nexthop) | +--:(simple-next-hop)
| | +--rw v6ur:gateway? inet:ipv6-address | | +--rw v6ur:next-hop? inet:ipv6-address
| | +--rw v6ur:outgoing-interface? leafref | | +--rw v6ur:outgoing-interface? leafref
| +--:(nexthop-list) {rt:multipath-routes}? | +--:(next-hop-list) {rt:multipath-routes}?
| +--rw v6ur:nexthop* [id] | +--rw v6ur:next-hop-list
| +--rw v6ur:id uint32 | +--rw v6ur:next-hop* [id]
| +--rw v6ur:address? inet:ipv6-address | +--rw v6ur:id uint32
| +--rw v6ur:outgoing-interface? leafref | +--rw v6ur:address?
| +--rw v6ur:priority? enumeration | +--rw v6ur:outgoing-interface?
| +--rw v6ur:weight? uint8 | +--rw v6ur:priority? enumeration
| +--rw v6ur:weight? uint8
+--rw ribs +--rw ribs
| +--rw rib* [name] | +--rw rib* [name]
| +--rw name string | +--rw name string
| +--rw address-family identityref | +--rw address-family identityref
| +--rw description? string | +--rw description? string
| +--rw recipient-ribs {multiple-ribs}? | +--rw recipient-ribs {multiple-ribs}?
| +--rw recipient-rib* [rib-name] | +--rw recipient-rib* [rib-name]
| +--rw rib-name rib-ref | +--rw rib-name rib-ref
| +--rw filter? route-filter-ref | +--rw filter? route-filter-ref
+--rw route-filters +--rw route-filters
+--rw route-filter* [name] +--rw route-filter* [name]
+--rw name string +--rw name string
+--rw description? string +--rw description? string
+--rw type identityref +--rw type identityref
A.2. Operational State Data A.2. Operational State Data
+--ro routing-state +--ro routing-state
+--ro routing-instance* [name] +--ro routing-instance* [name]
| +--ro name string | +--ro name string
| +--ro id? uint64 | +--ro id uint64
| +--ro type? identityref | +--ro type? identityref
| +--ro router-id? yang:dotted-quad | +--ro router-id? yang:dotted-quad
| +--ro default-ribs | +--ro default-ribs
| | +--ro default-rib* [address-family] | | +--ro default-rib* [address-family]
| | +--ro address-family identityref | | +--ro address-family identityref
| | +--ro rib-id rib-state-ref | | +--ro rib-name rib-state-ref
| +--ro interfaces | +--ro interfaces
| | +--ro interface* [name] | | +--ro interface* [name]
| | +--ro name if:interface-state-ref | | +--ro name if:interface-state-ref
| | +--ro v6ur:ipv6-router-advertisements | | +--ro v6ur:ipv6-router-advertisements
| | +--ro v6ur:send-advertisements? boolean | | +--ro v6ur:send-advertisements? boolean
| | +--ro v6ur:max-rtr-adv-interval? uint16 | | +--ro v6ur:max-rtr-adv-interval? uint16
| | +--ro v6ur:min-rtr-adv-interval? uint16 | | +--ro v6ur:min-rtr-adv-interval? uint16
| | +--ro v6ur:managed-flag? boolean | | +--ro v6ur:managed-flag? boolean
| | +--ro v6ur:other-config-flag? boolean | | +--ro v6ur:other-config-flag? boolean
| | +--ro v6ur:link-mtu? uint32 | | +--ro v6ur:link-mtu? uint32
| | +--ro v6ur:reachable-time? uint32 | | +--ro v6ur:reachable-time? uint32
| | +--ro v6ur:retrans-timer? uint32 | | +--ro v6ur:retrans-timer? uint32
| | +--ro v6ur:cur-hop-limit? uint8 | | +--ro v6ur:cur-hop-limit? uint8
| | +--ro v6ur:default-lifetime? uint16 | | +--ro v6ur:default-lifetime? uint16
| | +--ro v6ur:prefix-list | | +--ro v6ur:prefix-list
| | +--ro v6ur:prefix* [prefix-spec] | | +--ro v6ur:prefix* [prefix-spec]
| | +--ro v6ur:prefix-spec inet:ipv6-prefix | | +--ro v6ur:prefix-spec inet:ipv6-prefix
| | +--ro v6ur:valid-lifetime? uint32 | | +--ro v6ur:valid-lifetime? uint32
| | +--ro v6ur:on-link-flag? boolean | | +--ro v6ur:on-link-flag? boolean
| | +--ro v6ur:preferred-lifetime? uint32 | | +--ro v6ur:preferred-lifetime? uint32
| | +--ro v6ur:autonomous-flag? boolean | | +--ro v6ur:autonomous-flag? boolean
| +--ro routing-protocols | +--ro routing-protocols
| +--ro routing-protocol* [name] | +--ro routing-protocol* [name]
| +--ro name string | +--ro name string
| +--ro type identityref | +--ro type identityref
| +--ro connected-ribs {multiple-ribs}? | +--ro connected-ribs
| +--ro connected-rib* [rib-id] | +--ro connected-rib* [rib-name]
| +--ro rib-id rib-state-ref | +--ro rib-name rib-state-ref
| +--ro import-filter? route-filter-state-ref | +--ro import-filter? route-filter-state-ref
| +--ro export-filter? route-filter-state-ref | +--ro export-filter? route-filter-state-ref
+--ro ribs +--ro ribs
| +--ro rib* [name] | +--ro rib* [name]
| +--ro name string | +--ro name string
| +--ro id? uint64 | +--ro id uint64
| +--ro address-family identityref | +--ro address-family identityref
| +--ro routes | +--ro routes
| | +--ro route* | | +--ro route* [id]
| | +--ro id? uint64 | | +--ro id uint64
| | +--ro (nexthop-options) | | +--ro (next-hop-options)
| | | +--:(special-nexthop) | | | +--:(special-next-hop)
| | | | +--ro special-nexthop? enumeration | | | | +--ro special-next-hop? enumeration
| | | +--:(simple-nexthop) | | | +--:(simple-next-hop)
| | | | +--ro outgoing-interface? leafref | | | | +--ro outgoing-interface? leafref
| | | | +--ro v4ur:gateway? inet:ipv4-address | | | | +--ro v4ur:next-hop? inet:ipv4-address
| | | | +--ro v6ur:gateway? inet:ipv6-address | | | | +--ro v6ur:next-hop? inet:ipv6-address
| | | +--:(nexthop-list) {multipath-routes}? | | | +--:(next-hop-list) {multipath-routes}?
| | | +--ro nexthop* | | | +--ro next-hop-list
| | | +--ro id? uint64 | | | +--ro next-hop* [id]
| | | +--ro outgoing-interface? leafref | | | +--ro id uint64
| | | +--ro priority? enumeration | | | +--ro outgoing-interface? leafref
| | | +--ro weight? uint8 | | | +--ro priority? enumeration
| | | +--ro v4ur:address? inet:ipv4-address | | | +--ro weight? uint8
| | | +--ro v6ur:address? inet:ipv6-address | | | +--ro v4ur:address? inet:ipv4-address
| | | +--ro v6ur:address? inet:ipv6-address
| | +--ro source-protocol identityref | | +--ro source-protocol identityref
| | +--ro last-updated? yang:date-and-time | | +--ro last-updated? yang:date-and-time
| | +--ro v4ur:destination-prefix? inet:ipv4-prefix | | +--ro v4ur:destination-prefix? inet:ipv4-prefix
| | +--ro v6ur:destination-prefix? inet:ipv6-prefix | | +--ro v6ur:destination-prefix? inet:ipv6-prefix
| +--ro recipient-ribs {multiple-ribs}? | +--ro recipient-ribs {multiple-ribs}?
| +--ro recipient-rib* [rib-id] | +--ro recipient-rib* [rib-name]
| +--ro rib-id rib-state-ref | +--ro rib-name rib-state-ref
| +--ro filter? route-filter-state-ref | +--ro filter? route-filter-state-ref
+--ro route-filters +--ro route-filters
+--ro route-filter* [name] +--ro route-filter* [name]
+--ro name string +--ro name string
+--ro type identityref +--ro type identityref
Appendix B. Example: Adding a New Routing Protocol Appendix B. Minimum Implementation
Some parts and options of the core routing model, such as route
filters or multiple routing tables, are intended only for advanced
routers. This appendix gives basic non-normative guidelines for
implementing a bare minimum of available functions. Such an
implementation may be used for hosts or very simple routers.
A minimum implementation will provide a single system-controlled
routing instance, and will not allow clients to create any user-
controlled instances.
Typically, neither of the features defined in the "ietf-routing"
module ("multiple-ribs" and "multipath-routes") will be supported.
This means that:
o A single system-controlled RIB (routing table) is available for
each supported address family - IPv4, IPv6 or both. These RIBs
are the default RIBs, so they will also appear as system-
controlled entries of the "default-rib" list in operational state
data. No user-controlled RIBs are allowed.
o Each route has no more than one "next-hop", "outgoing-interface"
or "special-next-hop".
In addition to the mandatory instance of the "direct" pseudo-
protocol, a minimum implementation should support configured
instance(s) of the "static" pseudo-protocol. Even with a single RIB
per address family, it may be occasionally useful to be able to
configure multiple "static" instances. For example, a client may
want to configure alternative sets of static routes and activate or
deactivate them by means of configuring appropriate route filters
("allow-all-route-filter" or "deny-all-route-filter").
Platforms with severely constrained resources may use deviations for
restricting the data model, e.g., limiting the number of "static"
routing protocol instances, preventing any route filters to be
configured etc.
Appendix C. Example: Adding a New Routing Protocol
This appendix demonstrates how the core routing data model can be This appendix demonstrates how the core routing data model can be
extended to support a new routing protocol. The YANG module extended to support a new routing protocol. The YANG module
"example-rip" shown below is intended only as an illustration rather "example-rip" shown below is intended only as an illustration rather
than a real definition of a data model for the RIP routing protocol. than a real definition of a data model for the RIP routing protocol.
For the sake of brevity, we do not follow all the guidelines For the sake of brevity, we do not follow all the guidelines
specified in [RFC6087]. See also Section 5.4.2. specified in [RFC6087]. See also Section 5.4.2.
module example-rip { module example-rip {
skipping to change at page 81, line 5 skipping to change at page 82, line 5
} }
units "seconds"; units "seconds";
default "30"; default "30";
description description
"Time interval between periodic updates."; "Time interval between periodic updates.";
} }
} }
} }
} }
Appendix C. Example: NETCONF <get> Reply Appendix D. Example: NETCONF <get> Reply
This section contains a sample reply to the NETCONF <get> message, This section contains a sample reply to the NETCONF <get> message,
which could be sent by a server supporting (i.e., advertising them in which could be sent by a server supporting (i.e., advertising them in
the NETCONF <hello> message) the following YANG modules: the NETCONF <hello> message) the following YANG modules:
o ietf-interfaces [YANG-IF], o ietf-interfaces [YANG-IF],
o ietf-ip [YANG-IP], o ietf-ip [YANG-IP],
o ietf-routing (Section 7), o ietf-routing (Section 7),
o ietf-ipv4-unicast-routing (Section 8), o ietf-ipv4-unicast-routing (Section 8),
o ietf-ipv6-unicast-routing (Section 9). o ietf-ipv6-unicast-routing (Section 9).
We assume a simple network setup as shown in Figure 5: router "A" We assume a simple network setup as shown in Figure 5: router "A"
uses static default routes with the "ISP" router as the next hop. uses static default routes with the "ISP" router as the next-hop.
IPv6 router advertisements are configured only on the "eth1" IPv6 router advertisements are configured only on the "eth1"
interface and disabled on the upstream "eth0" interface. interface and disabled on the upstream "eth0" interface.
+-----------------+ +-----------------+
| | | |
| Router ISP | | Router ISP |
| | | |
+--------+--------+ +--------+--------+
|2001:db8:0:1::2 |2001:db8:0:1::2
|192.0.2.2 |192.0.2.2
skipping to change at page 82, line 9 skipping to change at page 83, line 9
A reply to the NETCONF <get> message sent by router "A" would then be A reply to the NETCONF <get> message sent by router "A" would then be
as follows: as follows:
<?xml version="1.0"?> <?xml version="1.0"?>
<rpc-reply <rpc-reply
message-id="101" message-id="101"
xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" xmlns="urn:ietf:params:xml:ns:netconf:base:1.0"
xmlns:v4ur="urn:ietf:params:xml:ns:yang:ietf-ipv4-unicast-routing" xmlns:v4ur="urn:ietf:params:xml:ns:yang:ietf-ipv4-unicast-routing"
xmlns:v6ur="urn:ietf:params:xml:ns:yang:ietf-ipv6-unicast-routing" xmlns:v6ur="urn:ietf:params:xml:ns:yang:ietf-ipv6-unicast-routing"
xmlns:if="urn:ietf:params:xml:ns:yang:ietf-interfaces" xmlns:if="urn:ietf:params:xml:ns:yang:ietf-interfaces"
xmlns:ianaift="urn:ietf:params:xml:ns:yang:iana-if-type"
xmlns:ip="urn:ietf:params:xml:ns:yang:ietf-ip" xmlns:ip="urn:ietf:params:xml:ns:yang:ietf-ip"
xmlns:rt="urn:ietf:params:xml:ns:yang:ietf-routing"> xmlns:rt="urn:ietf:params:xml:ns:yang:ietf-routing">
<data> <data>
<if:interfaces> <if:interfaces>
<if:interface> <if:interface>
<if:name>eth0</if:name> <if:name>eth0</if:name>
<if:type>ethernetCsmacd</if:type> <if:type>ianaift:ethernetCsmacd</if:type>
<if:description> <if:description>
Uplink to ISP. Uplink to ISP.
</if:description> </if:description>
<ip:ipv4> <ip:ipv4>
<ip:address> <ip:address>
<ip:ip>192.0.2.1</ip:ip> <ip:ip>192.0.2.1</ip:ip>
<ip:prefix-length>24</ip:prefix-length> <ip:prefix-length>24</ip:prefix-length>
</ip:address> </ip:address>
<ip:forwarding>true</ip:forwarding> <ip:forwarding>true</ip:forwarding>
</ip:ipv4> </ip:ipv4>
skipping to change at page 82, line 39 skipping to change at page 83, line 40
<ip:prefix-length>64</ip:prefix-length> <ip:prefix-length>64</ip:prefix-length>
</ip:address> </ip:address>
<ip:forwarding>true</ip:forwarding> <ip:forwarding>true</ip:forwarding>
<ip:autoconf> <ip:autoconf>
<ip:create-global-addresses>false</ip:create-global-addresses> <ip:create-global-addresses>false</ip:create-global-addresses>
</ip:autoconf> </ip:autoconf>
</ip:ipv6> </ip:ipv6>
</if:interface> </if:interface>
<if:interface> <if:interface>
<if:name>eth1</if:name> <if:name>eth1</if:name>
<if:type>ethernetCsmacd</if:type> <if:type>ianaift:ethernetCsmacd</if:type>
<if:description> <if:description>
Interface to the internal network. Interface to the internal network.
</if:description> </if:description>
<ip:ipv4> <ip:ipv4>
<ip:address> <ip:address>
<ip:ip>198.51.100.1</ip:ip> <ip:ip>198.51.100.1</ip:ip>
<ip:prefix-length>24</ip:prefix-length> <ip:prefix-length>24</ip:prefix-length>
</ip:address> </ip:address>
<ip:forwarding>true</ip:forwarding> <ip:forwarding>true</ip:forwarding>
</ip:ipv4> </ip:ipv4>
skipping to change at page 83, line 17 skipping to change at page 84, line 18
<ip:forwarding>true</ip:forwarding> <ip:forwarding>true</ip:forwarding>
<ip:autoconf> <ip:autoconf>
<ip:create-global-addresses>false</ip:create-global-addresses> <ip:create-global-addresses>false</ip:create-global-addresses>
</ip:autoconf> </ip:autoconf>
</ip:ipv6> </ip:ipv6>
</if:interface> </if:interface>
</if:interfaces> </if:interfaces>
<if:interfaces-state> <if:interfaces-state>
<if:interface> <if:interface>
<if:name>eth0</if:name> <if:name>eth0</if:name>
<if:type>ethernetCsmacd</if:type> <if:type>ianaift:ethernetCsmacd</if:type>
<if:phys-address>00:0C:42:E5:B1:E9</if:phys-address> <if:phys-address>00:0C:42:E5:B1:E9</if:phys-address>
<if:oper-status>up</if:oper-status> <if:oper-status>up</if:oper-status>
<if:statistics> <if:statistics>
<if:discontinuity-time> <if:discontinuity-time>
2013-07-02T17:11:27+00:58 2013-07-02T17:11:27+00:58
</if:discontinuity-time> </if:discontinuity-time>
</if:statistics> </if:statistics>
<ip:ipv4>
<ip:forwarding>true</ip:forwarding>
<ip:mtu>1500</ip:mtu>
<ip:address>
<ip:ip>192.0.2.1</ip:ip>
<ip:prefix-length>24</ip:prefix-length>
</ip:address>
</ip:ipv4>
<ip:ipv6>
<ip:forwarding>true</ip:forwarding>
<ip:mtu>1500</ip:mtu>
<ip:address>
<ip:ip>2001:0db8:0:1::1</ip:ip>
<ip:prefix-length>64</ip:prefix-length>
</ip:address>
</ip:ipv6>
</if:interface> </if:interface>
<if:interface> <if:interface>
<if:name>eth1</if:name> <if:name>eth1</if:name>
<if:type>ethernetCsmacd</if:type> <if:type>ianaift:ethernetCsmacd</if:type>
<if:oper-status>up</if:oper-status> <if:oper-status>up</if:oper-status>
<if:phys-address>00:0C:42:E5:B1:EA</if:phys-address> <if:phys-address>00:0C:42:E5:B1:EA</if:phys-address>
<if:statistics> <if:statistics>
<if:discontinuity-time> <if:discontinuity-time>
2013-07-02T17:11:27+00:59 2013-07-02T17:11:27+00:59
</if:discontinuity-time> </if:discontinuity-time>
</if:statistics> </if:statistics>
<ip:ipv4>
<ip:forwarding>true</ip:forwarding>
<ip:mtu>1500</ip:mtu>
<ip:address>
<ip:ip>198.51.100.1</ip:ip>
<ip:prefix-length>24</ip:prefix-length>
</ip:address>
</ip:ipv4>
<ip:ipv6>
<ip:forwarding>true</ip:forwarding>
<ip:mtu>1500</ip:mtu>
<ip:address>
<ip:ip>2001:0db8:0:2::1</ip:ip>
<ip:prefix-length>64</ip:prefix-length>
</ip:address>
</ip:ipv6>
</if:interface> </if:interface>
</if:interfaces-state> </if:interfaces-state>
<rt:routing> <rt:routing>
<rt:routing-instance> <rt:routing-instance>
<rt:name>rtr0</rt:name> <rt:name>rtr0</rt:name>
<rt:description>Router A</rt:description> <rt:description>Router A</rt:description>
<rt:interfaces> <rt:interfaces>
<rt:interface> <rt:interface>
<rt:name>eth1</rt:name> <rt:name>eth1</rt:name>
<v6ur:ipv6-router-advertisements> <v6ur:ipv6-router-advertisements>
skipping to change at page 84, line 20 skipping to change at page 86, line 4
<rt:name>st0</rt:name> <rt:name>st0</rt:name>
<rt:description> <rt:description>
Static routing is used for the internal network. Static routing is used for the internal network.
</rt:description> </rt:description>
<rt:type>rt:static</rt:type> <rt:type>rt:static</rt:type>
<rt:static-routes> <rt:static-routes>
<v4ur:ipv4> <v4ur:ipv4>
<v4ur:route> <v4ur:route>
<v4ur:id>1</v4ur:id> <v4ur:id>1</v4ur:id>
<v4ur:destination-prefix>0.0.0.0/0</v4ur:destination-prefix> <v4ur:destination-prefix>0.0.0.0/0</v4ur:destination-prefix>
<v4ur:gateway>192.0.2.2</v4ur:gateway> <v4ur:next-hop>192.0.2.2</v4ur:next-hop>
</v4ur:route> </v4ur:route>
</v4ur:ipv4> </v4ur:ipv4>
<v6ur:ipv6> <v6ur:ipv6>
<v6ur:route> <v6ur:route>
<v6ur:id>1</v6ur:id> <v6ur:id>1</v6ur:id>
<v6ur:destination-prefix>::/0</v6ur:destination-prefix> <v6ur:destination-prefix>::/0</v6ur:destination-prefix>
<v6ur:gateway>2001:db8:0:1::2</v6ur:gateway> <v6ur:next-hop>2001:db8:0:1::2</v6ur:next-hop>
</v6ur:route> </v6ur:route>
</v6ur:ipv6> </v6ur:ipv6>
</rt:static-routes> </rt:static-routes>
</rt:routing-protocol> </rt:routing-protocol>
</rt:routing-protocols> </rt:routing-protocols>
</rt:routing-instance> </rt:routing-instance>
</rt:routing> </rt:routing>
<rt:routing-state> <rt:routing-state>
<rt:routing-instance> <rt:routing-instance>
<rt:name>rtr0</rt:name> <rt:name>rtr0</rt:name>
<rt:id>2718281828</rt:id>
<rt:router-id>192.0.2.1</rt:router-id> <rt:router-id>192.0.2.1</rt:router-id>
<rt:default-ribs> <rt:default-ribs>
<rt:default-rib> <rt:default-rib>
<rt:address-family>v4ur:ipv4-unicast</rt:address-family> <rt:address-family>v4ur:ipv4-unicast</rt:address-family>
<rt:rib-id>897932384</rt:rib-id> <rt:rib-name>ipv4-master</rt:rib-name>
</rt:default-rib> </rt:default-rib>
<rt:default-rib> <rt:default-rib>
<rt:address-family>v6ur:ipv6-unicast</rt:address-family> <rt:address-family>v6ur:ipv6-unicast</rt:address-family>
<rt:rib-id>751058209</rt:rib-id> <rt:rib-name>ipv6-master</rt:rib-name>
</rt:default-rib> </rt:default-rib>
</rt:default-ribs> </rt:default-ribs>
<rt:interfaces> <rt:interfaces>
<rt:interface> <rt:interface>
<rt:name>eth0</rt:name> <rt:name>eth0</rt:name>
</rt:interface> </rt:interface>
<rt:interface> <rt:interface>
<rt:name>eth1</rt:name> <rt:name>eth1</rt:name>
<v6ur:ipv6-router-advertisements> <v6ur:ipv6-router-advertisements>
<v6ur:send-advertisements>true</v6ur:send-advertisements> <v6ur:send-advertisements>true</v6ur:send-advertisements>
skipping to change at page 85, line 25 skipping to change at page 87, line 11
</rt:interfaces> </rt:interfaces>
<rt:routing-protocols> <rt:routing-protocols>
<rt:routing-protocol> <rt:routing-protocol>
<rt:name>st0</rt:name> <rt:name>st0</rt:name>
<rt:type>rt:static</rt:type> <rt:type>rt:static</rt:type>
</rt:routing-protocol> </rt:routing-protocol>
</rt:routing-protocols> </rt:routing-protocols>
</rt:routing-instance> </rt:routing-instance>
<rt:ribs> <rt:ribs>
<rt:rib> <rt:rib>
<rt:name>ipv4-main</rt:name> <rt:name>ipv4-master</rt:name>
<rt:id>897932384</rt:id> <rt:id>897932384</rt:id>
<rt:address-family>v4ur:ipv4-unicast</rt:address-family> <rt:address-family>v4ur:ipv4-unicast</rt:address-family>
<rt:routes> <rt:routes>
<rt:route> <rt:route>
<rt:id>626433832</rt:id> <rt:id>626433832</rt:id>
<v4ur:destination-prefix>192.0.2.1/24</v4ur:destination-prefix> <v4ur:destination-prefix>192.0.2.1/24</v4ur:destination-prefix>
<rt:outgoing-interface>eth0</rt:outgoing-interface> <rt:outgoing-interface>eth0</rt:outgoing-interface>
<rt:source-protocol>rt:direct</rt:source-protocol> <rt:source-protocol>rt:direct</rt:source-protocol>
<rt:last-updated>2013-07-02T17:11:27+01:00</rt:last-updated> <rt:last-updated>2013-07-02T17:11:27+01:00</rt:last-updated>
</rt:route> </rt:route>
skipping to change at page 85, line 49 skipping to change at page 87, line 35
198.51.100.0/24 198.51.100.0/24
</v4ur:destination-prefix> </v4ur:destination-prefix>
<rt:outgoing-interface>eth1</rt:outgoing-interface> <rt:outgoing-interface>eth1</rt:outgoing-interface>
<rt:source-protocol>rt:direct</rt:source-protocol> <rt:source-protocol>rt:direct</rt:source-protocol>
<rt:last-updated>2013-07-02T17:11:27+01:00</rt:last-updated> <rt:last-updated>2013-07-02T17:11:27+01:00</rt:last-updated>
</rt:route> </rt:route>
<rt:route> <rt:route>
<rt:id>971693993</rt:id> <rt:id>971693993</rt:id>
<v4ur:destination-prefix>0.0.0.0/0</v4ur:destination-prefix> <v4ur:destination-prefix>0.0.0.0/0</v4ur:destination-prefix>
<rt:source-protocol>rt:static</rt:source-protocol> <rt:source-protocol>rt:static</rt:source-protocol>
<v4ur:gateway>192.0.2.2</v4ur:gateway> <v4ur:next-hop>192.0.2.2</v4ur:next-hop>
<rt:last-updated>2013-07-02T18:02:45+01:00</rt:last-updated> <rt:last-updated>2013-07-02T18:02:45+01:00</rt:last-updated>
</rt:route> </rt:route>
</rt:routes> </rt:routes>
</rt:rib> </rt:rib>
<rt:rib> <rt:rib>
<rt:name>ipv6-main</rt:name> <rt:name>ipv6-master</rt:name>
<rt:id>751058209</rt:id> <rt:id>751058209</rt:id>
<rt:address-family>v6ur:ipv6-unicast</rt:address-family> <rt:address-family>v6ur:ipv6-unicast</rt:address-family>
<rt:routes> <rt:routes>
<rt:route> <rt:route>
<rt:id>749445923</rt:id> <rt:id>749445923</rt:id>
<v6ur:destination-prefix> <v6ur:destination-prefix>
2001:db8:0:1::/64 2001:db8:0:1::/64
</v6ur:destination-prefix> </v6ur:destination-prefix>
<rt:outgoing-interface>eth0</rt:outgoing-interface> <rt:outgoing-interface>eth0</rt:outgoing-interface>
<rt:source-protocol>rt:direct</rt:source-protocol> <rt:source-protocol>rt:direct</rt:source-protocol>
skipping to change at page 86, line 33 skipping to change at page 88, line 18
<v6ur:destination-prefix> <v6ur:destination-prefix>
2001:db8:0:2::/64 2001:db8:0:2::/64
</v6ur:destination-prefix> </v6ur:destination-prefix>
<rt:outgoing-interface>eth1</rt:outgoing-interface> <rt:outgoing-interface>eth1</rt:outgoing-interface>
<rt:source-protocol>rt:direct</rt:source-protocol> <rt:source-protocol>rt:direct</rt:source-protocol>
<rt:last-updated>2013-07-02T17:11:27+01:00</rt:last-updated> <rt:last-updated>2013-07-02T17:11:27+01:00</rt:last-updated>
</rt:route> </rt:route>
<rt:route> <rt:route>
<rt:id>862089986</rt:id> <rt:id>862089986</rt:id>
<v6ur:destination-prefix>::/0</v6ur:destination-prefix> <v6ur:destination-prefix>::/0</v6ur:destination-prefix>
<v6ur:gateway>2001:db8:0:1::2</v6ur:gateway> <v6ur:next-hop>2001:db8:0:1::2</v6ur:next-hop>
<rt:source-protocol>rt:static</rt:source-protocol> <rt:source-protocol>rt:static</rt:source-protocol>
<rt:last-updated>2013-07-02T18:02:45+01:00</rt:last-updated> <rt:last-updated>2013-07-02T18:02:45+01:00</rt:last-updated>
</rt:route> </rt:route>
</rt:routes> </rt:routes>
</rt:rib> </rt:rib>
</rt:ribs> </rt:ribs>
</rt:routing-state> </rt:routing-state>
</data> </data>
</rpc-reply> </rpc-reply>
Appendix D. Change Log Appendix E. Change Log
RFC Editor: remove this section upon publication as an RFC. RFC Editor: remove this section upon publication as an RFC.
D.1. Changes Between Versions -11 and -12 E.1. Changes Between Versions -12 and -13
o Wrote appendix about minimum implementation.
o Remove "when" statement for IPv6 router interface operational
state - it was dependent on a config value that may not be
present.
o Extra container for the next-hop list.
o Names rather than numeric ids are used for referring to list
entries in operational state.
o Numeric ids are always declared as mandatory and unique. Their
description states that they are ephemeral.
o Descriptions of "name" keys in operational state lists are
required to be persistent.
o
o Removed "if-feature multiple-ribs;" from connected-ribs.
o "rib-name" instead of "name" is used as the name of leafref nodes.
o "next-hop" instead of "nexthop" or "gateway" used throughout, both
in node names and text.
E.2. Changes Between Versions -11 and -12
o Removed feature "advanced-router" and introduced two features o Removed feature "advanced-router" and introduced two features
instead: "multiple-ribs" and "multipath-routes". instead: "multiple-ribs" and "multipath-routes".
o Unified the keys of config and state versions of "routing- o Unified the keys of config and state versions of "routing-
instance" and "rib" lists. instance" and "rib" lists.
o Numerical identifiers of state list entries are not keys anymore, o Numerical identifiers of state list entries are not keys anymore,
but they are constrained using the "unique" statement. but they are constrained using the "unique" statement.
o Updated acknowledgements. o Updated acknowledgements.
D.2. Changes Between Versions -10 and -11 E.3. Changes Between Versions -10 and -11
o Migrated address families from IANA enumerations to identities. o Migrated address families from IANA enumerations to identities.
o Terminology and node names aligned with the I2RS RIB model: router o Terminology and node names aligned with the I2RS RIB model: router
-> routing instance, routing table -> RIB. -> routing instance, routing table -> RIB.
o Introduced uint64 keys for state lists: routing-instance, rib, o Introduced uint64 keys for state lists: routing-instance, rib,
route, nexthop. route, nexthop.
o Described the relationship between system-controlled and user- o Described the relationship between system-controlled and user-
skipping to change at page 87, line 46 skipping to change at page 90, line 29
router". router".
o Made nexthop into a choice in order to allow for nexthop-list o Made nexthop into a choice in order to allow for nexthop-list
(I2RS requirement). (I2RS requirement).
o Added nexthop-list with entries having priorities (backup) and o Added nexthop-list with entries having priorities (backup) and
weights (load balancing). weights (load balancing).
o Updated bibliography references. o Updated bibliography references.
D.3. Changes Between Versions -09 and -10 E.4. Changes Between Versions -09 and -10
o Added subtree for operational state data ("/routing-state"). o Added subtree for operational state data ("/routing-state").
o Terms "system-controlled entry" and "user-controlled entry" o Terms "system-controlled entry" and "user-controlled entry"
defined and used. defined and used.
o New feature "user-defined-routing-tables". Nodes that are useful o New feature "user-defined-routing-tables". Nodes that are useful
only with user-defined routing tables are now conditional. only with user-defined routing tables are now conditional.
o Added grouping "router-id". o Added grouping "router-id".
o In routing tables, "source-protocol" attribute of routes now o In routing tables, "source-protocol" attribute of routes now
reports only protocol type, and its datatype is "identityref". reports only protocol type, and its datatype is "identityref".
o Renamed "main-routing-table" to "default-routing-table". o Renamed "main-routing-table" to "default-routing-table".
D.4. Changes Between Versions -08 and -09 E.5. Changes Between Versions -08 and -09
o Fixed "must" expresion for "connected-routing-table". o Fixed "must" expresion for "connected-routing-table".
o Simplified "must" expression for "main-routing-table". o Simplified "must" expression for "main-routing-table".
o Moved per-interface configuration of a new routing protocol under o Moved per-interface configuration of a new routing protocol under
'routing-protocol'. This also affects the 'example-rip' module. 'routing-protocol'. This also affects the 'example-rip' module.
D.5. Changes Between Versions -07 and -08 E.6. Changes Between Versions -07 and -08
o Changed reference from RFC6021 to RFC6021bis. o Changed reference from RFC6021 to RFC6021bis.
D.6. Changes Between Versions -06 and -07 E.7. Changes Between Versions -06 and -07
o The contents of <get-reply> in Appendix C was updated: "eth[01]" o The contents of <get-reply> in Appendix D was updated: "eth[01]"
is used as the value of "location", and "forwarding" is on for is used as the value of "location", and "forwarding" is on for
both interfaces and both IPv4 and IPv6. both interfaces and both IPv4 and IPv6.
o The "must" expression for "main-routing-table" was modified to o The "must" expression for "main-routing-table" was modified to
avoid redundant error messages reporting address family mismatch avoid redundant error messages reporting address family mismatch
when "name" points to a non-existent routing table. when "name" points to a non-existent routing table.
o The default behavior for IPv6 RA prefix advertisements was o The default behavior for IPv6 RA prefix advertisements was
clarified. clarified.
o Changed type of "rt:router-id" to "ip:dotted-quad". o Changed type of "rt:router-id" to "ip:dotted-quad".
o Type of "rt:router-id" changed to "yang:dotted-quad". o Type of "rt:router-id" changed to "yang:dotted-quad".
o Fixed missing prefixes in XPath expressions. o Fixed missing prefixes in XPath expressions.
D.7. Changes Between Versions -05 and -06 E.8. Changes Between Versions -05 and -06
o Document title changed: "Configuration" was replaced by o Document title changed: "Configuration" was replaced by
"Management". "Management".
o New typedefs "routing-table-ref" and "route-filter-ref". o New typedefs "routing-table-ref" and "route-filter-ref".
o Double slashes "//" were removed from XPath expressions and o Double slashes "//" were removed from XPath expressions and
replaced with the single "/". replaced with the single "/".
o Removed uniqueness requirement for "router-id". o Removed uniqueness requirement for "router-id".
skipping to change at page 89, line 22 skipping to change at page 92, line 5
o Complete data tree is now in Appendix A. o Complete data tree is now in Appendix A.
o Changed type of "source-protocol" from "leafref" to "string". o Changed type of "source-protocol" from "leafref" to "string".
o Clarified the relationship between routing protocol instances and o Clarified the relationship between routing protocol instances and
connected routing tables. connected routing tables.
o Added a must constraint saying that a routing table connected to o Added a must constraint saying that a routing table connected to
the direct pseudo-protocol must not be a main routing table. the direct pseudo-protocol must not be a main routing table.
D.8. Changes Between Versions -04 and -05 E.9. Changes Between Versions -04 and -05
o Routing tables are now global, i.e., "routing-tables" is a child o Routing tables are now global, i.e., "routing-tables" is a child
of "routing" rather than "router". of "routing" rather than "router".
o "must" statement for "static-routes" changed to "when". o "must" statement for "static-routes" changed to "when".
o Added "main-routing-tables" containing references to main routing o Added "main-routing-tables" containing references to main routing
tables for each address family. tables for each address family.
o Removed the defaults for "address-family" and "safi" and made them o Removed the defaults for "address-family" and "safi" and made them
skipping to change at page 90, line 8 skipping to change at page 92, line 40
o The "direct" pseudo-protocol is always connected to main routing o The "direct" pseudo-protocol is always connected to main routing
tables. tables.
o Entries in the list of connected routing tables renamed from o Entries in the list of connected routing tables renamed from
"routing-table" to "connected-routing-table". "routing-table" to "connected-routing-table".
o Added "must" constraint saying that a routing table must not be o Added "must" constraint saying that a routing table must not be
its own recipient. its own recipient.
D.9. Changes Between Versions -03 and -04 E.10. Changes Between Versions -03 and -04
o Changed "error-tag" for both RPC methods from "missing element" to o Changed "error-tag" for both RPC methods from "missing element" to
"data-missing". "data-missing".
o Removed the decrementing behavior for advertised IPv6 prefix o Removed the decrementing behavior for advertised IPv6 prefix
parameters "valid-lifetime" and "preferred-lifetime". parameters "valid-lifetime" and "preferred-lifetime".
o Changed the key of the static route lists from "seqno" to "id" o Changed the key of the static route lists from "seqno" to "id"
because the routes needn't be sorted. because the routes needn't be sorted.
o Added 'must' constraint saying that "preferred-lifetime" must not o Added 'must' constraint saying that "preferred-lifetime" must not
be greater than "valid-lifetime". be greater than "valid-lifetime".
D.10. Changes Between Versions -02 and -03 E.11. Changes Between Versions -02 and -03
o Module "iana-afn-safi" moved to I-D "iana-if-type". o Module "iana-afn-safi" moved to I-D "iana-if-type".
o Removed forwarding table. o Removed forwarding table.
o RPC "get-route" changed to "active-route". Its output is a list o RPC "get-route" changed to "active-route". Its output is a list
of routes (for multi-path routing). of routes (for multi-path routing).
o New RPC "route-count". o New RPC "route-count".
skipping to change at page 91, line 7 skipping to change at page 93, line 37
"ietf-ip". "ietf-ip".
o Added "router-id" leaf. o Added "router-id" leaf.
o Specified the names for IPv4/IPv6 unicast main routing tables. o Specified the names for IPv4/IPv6 unicast main routing tables.
o Route parameter "last-modified" changed to "age". o Route parameter "last-modified" changed to "age".
o Added container "recipient-routing-tables". o Added container "recipient-routing-tables".
D.11. Changes Between Versions -01 and -02 E.12. Changes Between Versions -01 and -02
o Added module "ietf-ipv6-unicast-routing". o Added module "ietf-ipv6-unicast-routing".
o The example in Appendix C now uses IP addresses from blocks o The example in Appendix D now uses IP addresses from blocks
reserved for documentation. reserved for documentation.
o Direct routes appear by default in the forwarding table. o Direct routes appear by default in the forwarding table.
o Network layer interfaces must be assigned to a router instance. o Network layer interfaces must be assigned to a router instance.
Additional interface configuration may be present. Additional interface configuration may be present.
o The "when" statement is only used with "augment", "must" is used o The "when" statement is only used with "augment", "must" is used
elsewhere. elsewhere.
o Additional "must" statements were added. o Additional "must" statements were added.
o The "route-content" grouping for IPv4 and IPv6 unicast now o The "route-content" grouping for IPv4 and IPv6 unicast now
includes the material from the "ietf-routing" version via "uses includes the material from the "ietf-routing" version via "uses
rt:route-content". rt:route-content".
o Explanation of symbols in the tree representation of data model o Explanation of symbols in the tree representation of data model
hierarchy. hierarchy.
D.12. Changes Between Versions -00 and -01 E.13. Changes Between Versions -00 and -01
o AFN/SAFI-independent stuff was moved to the "ietf-routing" module. o AFN/SAFI-independent stuff was moved to the "ietf-routing" module.
o Typedefs for AFN and SAFI were placed in a separate "iana-afn- o Typedefs for AFN and SAFI were placed in a separate "iana-afn-
safi" module. safi" module.
o Names of some data nodes were changed, in particular "routing- o Names of some data nodes were changed, in particular "routing-
process" is now "router". process" is now "router".
o The restriction of a single AFN/SAFI per router was lifted. o The restriction of a single AFN/SAFI per router was lifted.
 End of changes. 264 change blocks. 
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