draft-ietf-mpls-mldp-yang-02.txt		draft-ietf-mpls-mldp-yang-03.txt
	MPLS Working Group K. Raza		MPLS Working Group K. Raza
	Internet-Draft S. Krishnaswamy		Internet-Draft S. Krishnaswamy
	Intended status: Standards Track Cisco Systems, Inc.		Intended status: Standards Track Cisco Systems, Inc.
	Expires: March 18, 2018		Expires: May 15, 2018
	X. Liu		X. Liu
	Jabil		Jabil
	S. Esale		S. Esale
	Juniper Networks		Juniper Networks
	X. Chen		L. Andersson
	Huawei Technologies		Huawei Technologies
	Jeff Tantsura		Jeff Tantsura
			Individual
	September 14, 2017		November 11, 2017
	YANG Data Model for MPLS mLDP		YANG Data Model for MPLS mLDP
	draft-ietf-mpls-mldp-yang-02		draft-ietf-mpls-mldp-yang-03
	Abstract		Abstract
	This document describes a YANG data model for Multi-Protocol Label		This document describes a YANG data model for Multi-Protocol Label
	Switching (MPLS) Multipoint Label Distribution Protocol (mLDP). The		Switching (MPLS) Multipoint Label Distribution Protocol (mLDP). The
	mLDP data model augments the LDP data model.		mLDP data model augments the LDP data model.
	Status of This Memo		Status of This Memo
	This Internet-Draft is submitted in full conformance with the		This Internet-Draft is submitted in full conformance with the
	provisions of BCP 78 and BCP 79.		provisions of BCP 78 and BCP 79.
	Internet-Drafts are working documents of the Internet Engineering		Internet-Drafts are working documents of the Internet Engineering
	Task Force (IETF). Note that other groups may also distribute		Task Force (IETF). Note that other groups may also distribute
	working documents as Internet-Drafts. The list of current Internet-		working documents as Internet-Drafts. The list of current Internet-
	Drafts is at http://datatracker.ietf.org/drafts/current/.		Drafts is at https://datatracker.ietf.org/drafts/current/.
	Internet-Drafts are draft documents valid for a maximum of six months		Internet-Drafts are draft documents valid for a maximum of six months
	and may be updated, replaced, or obsoleted by other documents at any		and may be updated, replaced, or obsoleted by other documents at any
	time. It is inappropriate to use Internet-Drafts as reference		time. It is inappropriate to use Internet-Drafts as reference
	material or to cite them other than as "work in progress."		material or to cite them other than as "work in progress."
	This Internet-Draft will expire on March 18, 2018.		This Internet-Draft will expire on May 15, 2018.
	Copyright Notice		Copyright Notice
	Copyright (c) 2017 IETF Trust and the persons identified as the		Copyright (c) 2017 IETF Trust and the persons identified as the
	document authors. All rights reserved.		document authors. All rights reserved.
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	described in the Simplified BSD License.		described in the Simplified BSD License.
	Table of Contents		Table of Contents
	1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3		1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
	1.1. Base and Extended . . . . . . . . . . . . . . . . . . . . 3		1.1. Base and Extended . . . . . . . . . . . . . . . . . . . . 3
	2. Specification of Requirements . . . . . . . . . . . . . . . . 4		2. Specification of Requirements . . . . . . . . . . . . . . . . 4
	3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 4		3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 4
	3.1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . 5		3.1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . 5
	3.2. FEC Types . . . . . . . . . . . . . . . . . . . . . . . . 6		3.2. FEC Types . . . . . . . . . . . . . . . . . . . . . . . . 6
	4. Configuration . . . . . . . . . . . . . . . . . . . . . . . . 7		4. Configuration . . . . . . . . . . . . . . . . . . . . . . . . 7
	4.1. Configuration Hierarchy . . . . . . . . . . . . . . . . . 7		4.1. Configuration Hierarchy . . . . . . . . . . . . . . . . . 7
	4.2. mldp global container . . . . . . . . . . . . . . . . . . 9		4.2. mldp global container . . . . . . . . . . . . . . . . . . 8
	4.3. Leveraging LDP containers . . . . . . . . . . . . . . . . 9		4.3. Leveraging LDP containers . . . . . . . . . . . . . . . . 9
	4.4. Configuration Tree . . . . . . . . . . . . . . . . . . . 10		4.4. Configuration Tree . . . . . . . . . . . . . . . . . . . 9
	4.4.1. Base . . . . . . . . . . . . . . . . . . . . . . . . 10		4.4.1. Base . . . . . . . . . . . . . . . . . . . . . . . . 9
	4.4.2. Extended . . . . . . . . . . . . . . . . . . . . . . 11		4.4.2. Extended . . . . . . . . . . . . . . . . . . . . . . 10
	5. Operational State . . . . . . . . . . . . . . . . . . . . . . 13		5. Operational State . . . . . . . . . . . . . . . . . . . . . . 12
	5.1. Base . . . . . . . . . . . . . . . . . . . . . . . . . . 13		5.1. Base . . . . . . . . . . . . . . . . . . . . . . . . . . 12
	5.2. Extended . . . . . . . . . . . . . . . . . . . . . . . . 14		5.2. Extended . . . . . . . . . . . . . . . . . . . . . . . . 13
	5.3. Derived states . . . . . . . . . . . . . . . . . . . . . 17		5.3. Derived states . . . . . . . . . . . . . . . . . . . . . 16
	5.3.1. Root state . . . . . . . . . . . . . . . . . . . . . 18		5.3.1. Root state . . . . . . . . . . . . . . . . . . . . . 16
	5.3.2. Bindings state . . . . . . . . . . . . . . . . . . . 19		5.3.2. Bindings state . . . . . . . . . . . . . . . . . . . 17
	5.3.3. Capabilities state . . . . . . . . . . . . . . . . . 22		5.3.3. Capabilities state . . . . . . . . . . . . . . . . . 20
	6. Notifications . . . . . . . . . . . . . . . . . . . . . . . . 22		6. Notifications . . . . . . . . . . . . . . . . . . . . . . . . 20
	6.1. Base . . . . . . . . . . . . . . . . . . . . . . . . . . 22		6.1. Base . . . . . . . . . . . . . . . . . . . . . . . . . . 20
	6.2. Extended . . . . . . . . . . . . . . . . . . . . . . . . 22		6.2. Extended . . . . . . . . . . . . . . . . . . . . . . . . 21
	7. Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . 23		7. Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
	8. Open Items . . . . . . . . . . . . . . . . . . . . . . . . . 23		8. Open Items . . . . . . . . . . . . . . . . . . . . . . . . . 22
	9. YANG Specification . . . . . . . . . . . . . . . . . . . . . 23		9. YANG Specification . . . . . . . . . . . . . . . . . . . . . 23
	9.1. Base . . . . . . . . . . . . . . . . . . . . . . . . . . 23		9.1. Base . . . . . . . . . . . . . . . . . . . . . . . . . . 23
	9.2. Extended . . . . . . . . . . . . . . . . . . . . . . . . 33		9.2. Extended . . . . . . . . . . . . . . . . . . . . . . . . 32
	10. Security Considerations . . . . . . . . . . . . . . . . . . . 54		10. Security Considerations . . . . . . . . . . . . . . . . . . . 55
	11. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 54		11. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 55
	12. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 54		12. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 55
	13. References . . . . . . . . . . . . . . . . . . . . . . . . . 54		13. Normative References . . . . . . . . . . . . . . . . . . . . 55
	13.1. Normative References . . . . . . . . . . . . . . . . . . 54
	13.2. Informative References . . . . . . . . . . . . . . . . . 56
	Appendix A. Additional Contributors . . . . . . . . . . . . . . 56		Appendix A. Additional Contributors . . . . . . . . . . . . . . 56
	Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 56		Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 57
	1. Introduction		1. Introduction
	This document introduces a YANG data model for MPLS Multipoint Label		This document introduces a YANG data model for MPLS Multipoint Label
	Distribution Protocol (mLDP). The mLDP model being defined here is		Distribution Protocol (mLDP). The mLDP model being defined here is
	dependent on LDP YANG data model [I-D.ietf-mpls-ldp-yang]. This		dependent on LDP YANG data model [I-D.ietf-mpls-ldp-yang]. This
	implies that an opertor will need to use base LDP module to configure		implies that an opertor will need to use base LDP module to configure
	and manage control plane for mLDP. For example, an operator would		and manage control plane for mLDP. For example, an operator would
	enable LDP discovery on MPLS interface to establish LDP/mLDP peering		enable LDP discovery on MPLS interface to establish LDP/mLDP peering
	on which mLDP bindings could be exchanged. Similarly, an operator		on which mLDP bindings could be exchanged. Similarly, an operator
	skipping to change at page 3, line 37 ¶		skipping to change at page 3, line 35 ¶
	following constructs for managing the mLDP protocol:		following constructs for managing the mLDP protocol:
	o Configuration		o Configuration
	o Operational State		o Operational State
	o Executables (Actions)		o Executables (Actions)
	o Notifications		o Notifications
			The modeling in this document complies with the Network Management
			Datastore Architecture (NMDA) [I-D.ietf-netmod-revised-datastores].
			The operational state data is combined with the associated
			configuration data in the same hierarchy
			[I-D.ietf-netmod-rfc6087bis]. When protocol states are retrieved
			from the NMDA operational state datastore, the returned states cover
			all "config true" (rw) and "config false" (ro) nodes defined in the
			schema.
	This document is organized to define the data model for each of the		This document is organized to define the data model for each of the
	above constructs in the sequence as listed above.		above constructs in the sequence as listed above.
	1.1. Base and Extended		1.1. Base and Extended
	Like LDP model, the configuration and state items are divided into		Like LDP model, the configuration and state items are divided into
	following two broad categories:		following two broad categories:
	o Base		o Base
	skipping to change at page 4, line 15 ¶		skipping to change at page 4, line 23 ¶
	category contains all other non-base features (such as recursive FEC		category contains all other non-base features (such as recursive FEC
	support, protection etc.). All the items in a base category are		support, protection etc.). All the items in a base category are
	mandatory and hence no "if-feature" is allowed under the "base"		mandatory and hence no "if-feature" is allowed under the "base"
	category. While "base" model support will suffice for small		category. While "base" model support will suffice for small
	deployments, large deployments will require not only the "base"		deployments, large deployments will require not only the "base"
	module support but also "extended" support for some selected and		module support but also "extended" support for some selected and
	required features.		required features.
	The base and extended catogories are defined in their own modules		The base and extended catogories are defined in their own modules
	ietf-mpls-mldp and ietf-mpls-mldp-extended respectively, each of		ietf-mpls-mldp and ietf-mpls-mldp-extended respectively, each of
	which augmenting LDP base model ietf-mpls-ldp as defined under ietf-		which augments the LDP base model as defined under ietf-mpls-ldp
	mpls-ldp [I-D.ietf-mpls-ldp-yang].		module [I-D.ietf-mpls-ldp-yang].
	Like LDP, mLDP "base" model configuration and state covers ipv4		Like LDP, mLDP "base" model configuration and state covers ipv4
	address-family only, with ipv6 address-family related configuration		address-family only, with ipv6 address-family related configuration
	and state be covered in "extended" model.		and state be covered in "extended" model.
	2. Specification of Requirements		2. Specification of Requirements
	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].
	skipping to change at page 5, line 5 ¶		skipping to change at page 5, line 5 ¶
	This document defines a new module named "ietf-mpls-mldp" for mLDP		This document defines a new module named "ietf-mpls-mldp" for mLDP
	YANG base data model that augments /rt:routing/rt:control-plane-		YANG base data model that augments /rt:routing/rt:control-plane-
	protocols/ldp:mpls-ldp defined in [I-D.ietf-mpls-ldp-yang]. The		protocols/ldp:mpls-ldp defined in [I-D.ietf-mpls-ldp-yang]. The
	document also defines "ietf-mpls-mldp-extended" module that models		document also defines "ietf-mpls-mldp-extended" module that models
	the extended mLDP features under YANG.		the extended mLDP features under YANG.
	Following diagram depicts high level mLDP yang tree organization and		Following diagram depicts high level mLDP yang tree organization and
	hierarchy with respect to LDP:		hierarchy with respect to LDP:
	+-- rw routing		+-- rw routing
	+-- rw control-plane-protocols		+-- rw control-plane-protocols
	+-- rw mpls-ldp		+-- rw mpls-ldp
	+-- rw some_container		+-- rw some_ldp_container
	| +-- rw config		| +-- rw mldp
	| | +-- rw .... // ldp base		| +-- rw ... // mldp base
	| | +-- rw ldp-ext:.... // ldp extended		| | +-- rw ...
	| | ...		| | +-- ro ...
	| | +-- rw mldp		| | +--
	| | +-- rw ... // mldp base		| +-- rw mldp-ext:... // mldp extended
	| | +-- rw mldp-ext:.... // mldp extended		| | +-- rw ...
	| | ...		| | +-- ro ...
	| +-- ro state		| | +--
	| | +-- ro .... // ldp base		+-- ro some_ldp_container
	| | +-- ro ldp-ext:.... // ldp extended		+-- ro mldp
	| | ...		+-- ro ... // mldp base
	| | +-- ro mldp		| +-- ro ...
	| | +-- ro ... // mldp base		| +--
	| | +-- ro mldp-ext:.... // mldp extended		+-- ro mldp-ext:... // mldp extended
	| | ...		+-- ro ...
	+-- rw ...		+--
	|
	notifications:		notifications:
	+--- n mpls-mldp-some_event		+--- n mpls-mldp-some_event
	+--- n ...		+--- n ...
	Figure 1		Figure 1
	3.1. Scope		3.1. Scope
	Following are the main mLDP areas and features that are within the		Following are the main mLDP areas and features that are within the
	scope of this model:		scope of this model:
	o Base:		o Base:
	skipping to change at page 10, line 31 ¶		skipping to change at page 9, line 40 ¶
	support will also be provided.		support will also be provided.
	o Forwarding: By default, mLDP is allowed to select any of the LDP		o Forwarding: By default, mLDP is allowed to select any of the LDP
	enabled interface as a downstream interface towards a nexthop		enabled interface as a downstream interface towards a nexthop
	(LDP/mLDP peer) for MP LSP programming. However, a configuration		(LDP/mLDP peer) for MP LSP programming. However, a configuration
	option is provided to allow mLDP to exclude a given interface from		option is provided to allow mLDP to exclude a given interface from
	such a selection. Note that such a configuration option will be		such a selection. Note that such a configuration option will be
	useful only when there are more than one interfaces available for		useful only when there are more than one interfaces available for
	the downstream selection.		the downstream selection.
	This goes without saying that mLDP configuration tree follows the
	same approach as LDP, where the tree comprise leafs for intended
	configuration.
	4.4. Configuration Tree		4.4. Configuration Tree
	4.4.1. Base		4.4.1. Base
	Following is a simplified graphical representation of the data model		Following is a simplified graphical representation of the data model
	for mLDP base configuration		for mLDP base configuration
	module: ietf-mpls-mldp		module: ietf-mpls-mldp
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/ldp:config/ldp:capability:		augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/ldp:capability:
	+--rw mldp		+--rw mldp
	+--rw p2mp		+--rw p2mp
	| +--rw enable? boolean		| +--rw enable? boolean
	+--rw mp2mp		+--rw mp2mp
	| +--rw enable? boolean		| +--rw enable? boolean
	+--rw make-before-break		+--rw make-before-break
	+--rw enable? boolean		+--rw enable? boolean
	+--rw switchover-delay? uint16		+--rw switchover-delay? uint16
	+--rw timeout? uint16		+--rw timeout? uint16
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global:		augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global:
	+--rw mldp		+--rw mldp
	+--rw config		+--rw enable? boolean
	| +--rw enable? boolean		+--rw address-families
	+--rw address-families		+--rw ipv4
	+--rw ipv4		+--rw configured-leaf-lsps
	+--rw configured-leaf-lsps		+--rw opaque-type-lspid
	+--rw p2mp		+--rw fec-label* [root-address lsp-id]
	| +--rw roots		+--rw root-address inet:ipv4-address
	| +--rw root* [root-address]		+--rw lsp-id uint32
	| +--rw root-address inet:ipv4-address		+--rw multipoint-type? multipoint-type
	| +--rw (lsp-key-type)?
	| +--:(lsp-id)
	| +--rw opaque-type-lspid
	| +--rw lsp* [lsp-id]
	| +--rw lsp-id uint16
	+--rw mp2mp
	+--rw roots
	+--rw root* [root-address]
	+--rw root-address inet:ipv4-address
	+--rw (lsp-key-type)?
	+--:(lsp-id)
	+--rw opaque-type-lspid
	+--rw lsp* [lsp-id]
	+--rw lsp-id uint16
	Figure 3		Figure 3
	4.4.2. Extended		4.4.2. Extended
	Following is a simplified graphical representation of the data model		Following is a simplified graphical representation of the data model
	for mLDP extended configuration		for mLDP extended configuration
	module: ietf-mpls-mldp-extended		module: ietf-mpls-mldp
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/ldp:config/ldp:capability/mldp:mldp:		augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/ldp:capability:
	+--rw hub-and-spoke {capability-mldp-hsmp}?		+--rw mldp
	| +--rw enable? boolean		+--rw mldp-ext:hub-and-spoke {capability-mldp-hsmp}?
	+--rw node-protection {capability-mldp-node-protection}?		| +--rw mldp-ext:enable? boolean
	+--rw plr? boolean		+--rw mldp-ext:node-protection {capability-mldp-node-protection}?
	+--rw merge-point		+--rw mldp-ext:plr? boolean
	+--rw enable? boolean		+--rw mldp-ext:merge-point
	+--rw targeted-session-teardown-delay? uint16		+--rw mldp-ext:enable? boolean
			+--rw mldp-ext:targeted-session-teardown-delay? uint16
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:config/ldp:capability:
	+--rw mldp {per-peer-capability}?
	+--rw p2mp
	| +--rw enable? boolean
	+--rw mp2mp
	| +--rw enable? boolean
	+--rw make-before-break
	+--rw enable? boolean
	+--rw switchover-delay? uint16
	+--rw timeout? uint16
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/mldp:ipv4:
	+--rw config
	+--rw multicast-only-frr {mldp-mofrr}?
	| +--rw prefix-list? ldp-ext:prefix-list-ref
	+--rw recursive-fec
	+--rw prefix-list? ldp-ext:prefix-list-ref
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/mldp:ipv4/mldp:configured-leaf-lsps/mldp:p2mp/mldp:roots/mldp:root/mldp:lsp-key-type:
	+--:(source-group)
	+--rw opaque-type-transit
	+--rw lsp* [source-address group-address]
	+--rw source-address inet:ipv4-address
	+--rw group-address inet:ipv4-address-no-zone
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/mldp:ipv4/mldp:configured-leaf-lsps/mldp:mp2mp/mldp:roots/mldp:root/mldp:lsp-key-type:		augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global:
	+--:(source-group)		+--rw mldp
	+--rw opaque-type-transit		+--rw enable? boolean
	+--rw lsp* [source-address group-address]		+--rw address-families
	+--rw source-address inet:ipv4-address		+--rw ipv4
	+--rw group-address inet:ipv4-address-no-zone		| +--rw configured-leaf-lsps
			| | +--rw mldp-ext:opaque-type-transit
			| | | +--rw mldp-ext:fec-label* [root-address source-address group-address rd recur-root-address recur-rd]
			| | | +--rw mldp-ext:root-address inet:ipv4-address
			| | | +--rw mldp-ext:source-address inet:ip-address
			| | | +--rw mldp-ext:group-address inet:ip-address-no-zone
			| | | +--rw mldp-ext:rd route-distinguisher
			| | | +--rw mldp-ext:recur-root-address inet:ip-address
			| | | +--rw mldp-ext:recur-rd route-distinguisher
			| | | +--rw mldp-ext:multipoint-type? mldp:multipoint-type
			| | +--rw mldp-ext:opaque-type-bidir
			| | +--rw mldp-ext:fec-label* [root-address rp group-address rd recur-root-address recur-rd]
			| | +--rw mldp-ext:root-address inet:ipv4-address
			| | +--rw mldp-ext:rp inet:ip-address
			| | +--rw mldp-ext:group-address inet:ip-address-no-zone
			| | +--rw mldp-ext:rd route-distinguisher
			| | +--rw mldp-ext:recur-root-address inet:ip-address
			| | +--rw mldp-ext:recur-rd route-distinguisher
			| | +--rw mldp-ext:multipoint-type? mldp:multipoint-type
			| +--rw mldp-ext:multicast-only-frr {mldp-mofrr}?
			| | +--rw mldp-ext:prefix-list? ldp-ext:prefix-list-ref
			| +--rw mldp-ext:recursive-fec
			| +--rw mldp-ext:prefix-list? ldp-ext:prefix-list-ref
			+--rw mldp-ext:ipv6
			+--rw mldp-ext:configured-leaf-lsps
			| +--rw mldp-ext:opaque-type-lspid
			| | +--rw mldp-ext:fec-label* [root-address lsp-id]
			| | +--rw mldp-ext:root-address inet:ipv6-address
			| | +--rw mldp-ext:lsp-id uint32
			| | +--rw mldp-ext:multipoint-type? mldp:multipoint-type
			| | +--rw mldp-ext:recursive-fec* [recur-root-address recur-rd]
			| | +--rw mldp-ext:recur-root-address inet:ip-address
			| | +--rw mldp-ext:recur-rd route-distinguisher
			| | +--rw mldp-ext:multipoint-type? mldp:multipoint-type
			| +--rw mldp-ext:opaque-type-transit
			| | +--rw mldp-ext:fec-label* [root-address source-address group-address rd recur-root-address recur-rd]
			| | +--rw mldp-ext:root-address inet:ipv6-address
			| | +--rw mldp-ext:source-address inet:ip-address
			| | +--rw mldp-ext:group-address inet:ip-address-no-zone
			| | +--rw mldp-ext:rd route-distinguisher
			| | +--rw mldp-ext:recur-root-address inet:ip-address
			| | +--rw mldp-ext:recur-rd route-distinguisher
			| | +--rw mldp-ext:multipoint-type? mldp:multipoint-type
			| +--rw mldp-ext:opaque-type-bidir
			| +--rw mldp-ext:fec-label* [root-address rp group-address rd recur-root-address recur-rd]
			| +--rw mldp-ext:root-address inet:ipv6-address
			| +--rw mldp-ext:rp inet:ip-address
			| +--rw mldp-ext:group-address inet:ip-address-no-zone
			| +--rw mldp-ext:rd route-distinguisher
			| +--rw mldp-ext:recur-root-address inet:ip-address
			| +--rw mldp-ext:recur-rd route-distinguisher
			| +--rw mldp-ext:multipoint-type? mldp:multipoint-type
			+--rw mldp-ext:multicast-only-frr {mldp-mofrr}?
			| +--rw mldp-ext:prefix-list? ldp-ext:prefix-list-ref
			+--rw mldp-ext:recursive-fec
			+--rw mldp-ext:prefix-list? ldp-ext:prefix-list-ref
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/ldp-ext:forwarding-nexthop/ldp-ext:interfaces/ldp-ext:interface/ldp-ext:address-family/ldp-ext:config:		augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:capability:
	+--rw mldp-disable? boolean		+--rw mldp {per-peer-capability}?
			+--rw p2mp
			| +--rw enable? boolean
			+--rw mp2mp
			| +--rw enable? boolean
			+--rw make-before-break
			+--rw enable? boolean
			+--rw switchover-delay? uint16
			+--rw timeout? uint16
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families:		augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/ldp-ext:forwarding-nexthop/ldp-ext:interfaces/ldp-ext:interface/ldp-ext:address-family:
	+--rw ipv6		+--rw mldp-disable? boolean
	+--rw config
	+--rw multicast-only-frr {mldp-mofrr}?
	| +--rw prefix-list? ldp-ext:prefix-list-ref
	+--rw recursive-fec
	+--rw prefix-list? ldp-ext:prefix-list-ref
	Figure 4		Figure 4
	5. Operational State		5. Operational State
	Operational state of mLDP can be queried and obtained from various		Operational state of mLDP can be queried and obtained from various
	read-only mdlp "state" containers that augment ldp state containers.		read-only mdlp "state" containers that augment ldp containers.
	Please note this state tree refers both the configuration "applied"
	state as well as the "derived" state related to the mLDP protocol.
	[Ed note: Future revision will realign]
	5.1. Base		5.1. Base
	Following is a simplified graphical representation of the data model		Following is a simplified graphical representation of the data model
	for mLDP base operational state:		for mLDP base operational state:
	module: ietf-mpls-mldp		module: ietf-mpls-mldp
			augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:received-peer-state/ldp:capability:
			+--ro mldp
			+--ro p2mp
			| +--ro enable? boolean
			+--ro mp2mp
			| +--ro enable? boolean
			+--ro make-before-break
			+--ro enable? boolean
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/ldp:state/ldp:capability:		augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global:
	+--ro mldp		+--rw mldp
	+--ro p2mp		+--rw enable? boolean
	| +--ro enable? boolean		+--rw address-families
	+--ro mp2mp		+--rw ipv4
	| +--ro enable? boolean		+--ro roots
	+--ro make-before-break		+--ro root* [root-address]
	+--ro enable? boolean		+--ro root-address inet:ipv4-address
	+--ro switchover-delay? uint16		+--ro is-self? boolean
	+--ro timeout? uint16		+--ro reachability* [address interface]
			| +--ro address inet:ipv4-address
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:state/ldp:received-peer-state/ldp:capability:		| +--ro interface if:interface-ref
	+--ro mldp		| +--ro peer? -> ../../../../../../../../ldp:peers/peer/lsr-id
	+--ro p2mp		+--ro bindings
	| +--ro enable? boolean		+--ro opaque-type-lspid
	+--ro mp2mp		+--ro fec-label* [lsp-id]
	| +--ro enable? boolean		+--ro lsp-id uint32
	+--ro make-before-break		+--ro multipoint-type? multipoint-type
	+--ro enable? boolean		+--ro peer* [direction peer advertisement-type]
			+--ro direction ldp:downstream-upstream
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global:		+--ro peer -> /rt:routing/control-plane-protocols/ldp:mpls-ldp/peers/peer/lsr-id
	+--rw mldp		+--ro advertisement-type ldp:advertised-received
	+--ro state		+--ro label? rt-types:mpls-label
	| +--ro enable? boolean		+--ro mbb-role? enumeration
	+--rw address-families		+--ro mldp-ext:mofrr-role? mofrr-role
	+--rw ipv4
	+--ro state
	+--ro roots
	+--ro root* [root-address]
	+--ro root-address inet:ipv4-address
	+--ro is-self? boolean
	+--ro reachability* [address interface]
	| +--ro address inet:ipv4-address
	| +--ro interface ldp:mpls-interface-ref
	| +--ro peer? leafref
	+--ro bindings
	+--ro opaque-type-lspid
	+--ro fec-label* [lsp-id]
	+--ro lsp-id uint32
	+--ro multipoint-type? multipoint-type
	+--ro peer* [direction peer advertisement-type]
	+--ro direction ldp:downstream-upstream
	+--ro peer leafref
	+--ro advertisement-type ldp:advertised-received
	+--ro label? rt-types:mpls-label
	+--ro mbb-role? enumeration
	Figure 5		Figure 5
	5.2. Extended		5.2. Extended
	Following is a simplified graphical representation of the data model		Following is a simplified graphical representation of the data model
	for mLDP extended operational state:		for mLDP extended operational state:
	module: ietf-mpls-mldp-extended		module: ietf-mpls-mldp
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/ldp:state/ldp:capability/mldp:mldp:
	+--ro hub-and-spoke {capability-mldp-hsmp}?
	| +--ro enable? boolean
	+--ro node-protection {capability-mldp-node-protection}?
	+--ro plr? boolean
	+--ro merge-point
	+--ro enable? boolean
	+--ro targeted-session-teardown-delay? uint16
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:state/ldp:capability:
	+--ro mldp
	+--ro p2mp
	| +--ro enable? boolean
	+--ro mp2mp
	| +--ro enable? boolean
	+--ro make-before-break
	+--ro enable? boolean
	+--ro switchover-delay? uint16
	+--ro timeout? uint16
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/mldp:ipv4/mldp:state:
	+--ro multicast-only-frr {mldp-mofrr}?
	| +--ro prefix-list? ldp-ext:prefix-list-ref
	+--ro recursive-fec
	+--ro prefix-list? ldp-ext:prefix-list-ref
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/mldp:ipv4/mldp:state/mldp:roots/mldp:root/mldp:bindings/mldp:opaque-type-lspid/mldp:fec-label/mldp:peer:
	+--ro mofrr-role? mofrr-role
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/ldp-ext:forwarding-nexthop/ldp-ext:interfaces/ldp-ext:interface/ldp-ext:address-family/ldp-ext:state:
	+--ro mldp-disable? boolean
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:state/ldp:received-peer-state/ldp:capability/mldp:mldp:
	+--ro hub-and-spoke
	| +--ro enable? boolean
	+--ro node-protection
	+--ro plr? boolean
	+--ro merge-point? boolean
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/mldp:ipv4/mldp:state/mldp:roots/mldp:root/mldp:bindings:		augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:received-peer-state/ldp:capability:
	+--ro opaque-type-transit
	| +--ro fec-label* [source-address group-address rd recur-root-address recur-rd]
	| +--ro source-address inet:ip-address
	| +--ro group-address inet:ip-address-no-zone
	| +--ro rd route-distinguisher
	| +--ro recur-root-address inet:ip-address
	| +--ro recur-rd route-distinguisher
	| +--ro multipoint-type? mldp:multipoint-type
	| +--ro peer* [direction peer advertisement-type]
	| +--ro direction ldp:downstream-upstream
	| +--ro peer leafref
	| +--ro advertisement-type ldp:advertised-received
	| +--ro label? rt-types:mpls-label
	| +--ro mbb-role? enumeration
	| +--ro mofrr-role? mofrr-role
	+--ro opaque-type-bidir
	+--ro fec-label* [rp group-address rd recur-root-address recur-rd]
	+--ro rp inet:ip-address
	+--ro group-address inet:ip-address-no-zone
	+--ro rd route-distinguisher
	+--ro recur-root-address inet:ip-address
	+--ro recur-rd route-distinguisher
	+--ro multipoint-type? mldp:multipoint-type
	+--ro peer* [direction peer advertisement-type]
	+--ro direction ldp:downstream-upstream
	+--ro peer leafref
	+--ro advertisement-type ldp:advertised-received
	+--ro label? rt-types:mpls-label
	+--ro mbb-role? enumeration
	+--ro mofrr-role? mofrr-role
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/mldp:ipv4/mldp:state/mldp:roots/mldp:root/mldp:bindings/mldp:opaque-type-lspid/mldp:fec-label:		+--ro mldp
	+--ro recursive-fec* [recur-root-address recur-rd]		+--ro mldp-ext:hub-and-spoke
	+--ro recur-root-address inet:ip-address		| +--ro mldp-ext:enable? boolean
	+--ro recur-rd route-distinguisher		+--ro mldp-ext:node-protection
	+--ro multipoint-type? mldp:multipoint-type		+--ro mldp-ext:plr? boolean
	+--ro peer* [direction peer advertisement-type]		+--ro mldp-ext:merge-point? boolean
	+--ro direction ldp:downstream-upstream
	+--ro peer leafref
	+--ro advertisement-type ldp:advertised-received
	+--ro label? rt-types:mpls-label
	+--ro mbb-role? enumeration
	+--ro mofrr-role? mofrr-role
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families:		augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global:
	+--rw ipv6		+--rw mldp
	+--ro state		+--rw enable? boolean
	+--ro roots		+--rw address-families
	+--ro root* [root-address]		+--rw ipv4
	+--ro root-address inet:ipv6-address		| +--ro roots
	+--ro is-self? boolean		| +--ro root* [root-address]
	+--ro reachability* [address interface]		| +--ro root-address inet:ipv4-address
	| +--ro address inet:ipv6-address		| +--ro bindings
	| +--ro interface ldp:mpls-interface-ref		| +--ro opaque-type-lspid
	| +--ro peer? leafref		| | +--ro mldp-ext:recursive-fec* [recur-root-address recur-rd]
	+--ro bindings		| | +--ro mldp-ext:recur-root-address inet:ip-address
	+--ro opaque-type-lspid		| | +--ro mldp-ext:recur-rd route-distinguisher
	| +--ro fec-label* [lsp-id]		| | +--ro mldp-ext:multipoint-type? mldp:multipoint-type
	| +--ro lsp-id uint32		| | +--ro mldp-ext:peer* [direction peer advertisement-type]
	| +--ro multipoint-type? mldp:multipoint-type		| | +--ro mldp-ext:direction ldp:downstream-upstream
	| +--ro peer* [direction peer advertisement-type]		| | +--ro mldp-ext:peer -> /rt:routing/control-plane-protocols/ldp:mpls-ldp/peers/peer/lsr-id
	| | +--ro direction ldp:downstream-upstream		| | +--ro mldp-ext:advertisement-type ldp:advertised-received
	| | +--ro peer leafref		| | +--ro mldp-ext:label? rt-types:mpls-label
	| | +--ro advertisement-type ldp:advertised-received		| | +--ro mldp-ext:mbb-role? enumeration
	| | +--ro label? rt-types:mpls-label		| | +--ro mldp-ext:mofrr-role? mofrr-role
	| | +--ro mbb-role? enumeration		| +--ro mldp-ext:opaque-type-transit
	| | +--ro mofrr-role? mofrr-role		| | +--ro mldp-ext:fec-label* [source-address group-address rd recur-root-address recur-rd]
	| +--ro recursive-fec* [recur-root-address recur-rd]		| | +--ro mldp-ext:source-address inet:ip-address
	| +--ro recur-root-address inet:ip-address		| | +--ro mldp-ext:group-address inet:ip-address-no-zone
	| +--ro recur-rd route-distinguisher		| | +--ro mldp-ext:rd route-distinguisher
	| +--ro multipoint-type? mldp:multipoint-type		| | +--ro mldp-ext:recur-root-address inet:ip-address
	| +--ro peer* [direction peer advertisement-type]		| | +--ro mldp-ext:recur-rd route-distinguisher
	| +--ro direction ldp:downstream-upstream		| | +--ro mldp-ext:multipoint-type? mldp:multipoint-type
	| +--ro peer leafref		| | +--ro mldp-ext:peer* [direction peer advertisement-type]
	| +--ro advertisement-type ldp:advertised-received		| | +--ro mldp-ext:direction ldp:downstream-upstream
	| +--ro label? rt-types:mpls-label		| | +--ro mldp-ext:peer -> /rt:routing/control-plane-protocols/ldp:mpls-ldp/peers/peer/lsr-id
	| +--ro mbb-role? enumeration		| | +--ro mldp-ext:advertisement-type ldp:advertised-received
	| +--ro mofrr-role? mofrr-role		| | +--ro mldp-ext:label? rt-types:mpls-label
	+--ro opaque-type-transit		| | +--ro mldp-ext:mbb-role? enumeration
	| +--ro fec-label* [source-address group-address rd recur-root-address recur-rd]		| | +--ro mldp-ext:mofrr-role? mofrr-role
	| +--ro source-address inet:ip-address		| +--ro mldp-ext:opaque-type-bidir
	| +--ro group-address inet:ip-address-no-zone		| +--ro mldp-ext:fec-label* [rp group-address rd recur-root-address recur-rd]
	| +--ro rd route-distinguisher		| +--ro mldp-ext:rp inet:ip-address
	| +--ro recur-root-address inet:ip-address		| +--ro mldp-ext:group-address inet:ip-address-no-zone
	| +--ro recur-rd route-distinguisher		| +--ro mldp-ext:rd route-distinguisher
	| +--ro multipoint-type? mldp:multipoint-type		| +--ro mldp-ext:recur-root-address inet:ip-address
	| +--ro peer* [direction peer advertisement-type]		| +--ro mldp-ext:recur-rd route-distinguisher
	| +--ro direction ldp:downstream-upstream		| +--ro mldp-ext:multipoint-type? mldp:multipoint-type
	| +--ro peer leafref		| +--ro mldp-ext:peer* [direction peer advertisement-type]
	| +--ro advertisement-type ldp:advertised-received		| +--ro mldp-ext:direction ldp:downstream-upstream
	| +--ro label? rt-types:mpls-label		| +--ro mldp-ext:peer -> /rt:routing/control-plane-protocols/ldp:mpls-ldp/peers/peer/lsr-id
	| +--ro mbb-role? enumeration		| +--ro mldp-ext:advertisement-type ldp:advertised-received
	| +--ro mofrr-role? mofrr-role		| +--ro mldp-ext:label? rt-types:mpls-label
	+--ro opaque-type-bidir		| +--ro mldp-ext:mbb-role? enumeration
	+--ro fec-label* [rp group-address rd recur-root-address recur-rd]		| +--ro mldp-ext:mofrr-role? mofrr-role
	+--ro rp inet:ip-address		+--rw mldp-ext:ipv6
	+--ro group-address inet:ip-address-no-zone		+--ro mldp-ext:roots
	+--ro rd route-distinguisher		+--ro mldp-ext:root* [root-address]
	+--ro recur-root-address inet:ip-address		+--ro mldp-ext:root-address inet:ipv6-address
	+--ro recur-rd route-distinguisher		+--ro mldp-ext:is-self? boolean
	+--ro multipoint-type? mldp:multipoint-type		+--ro mldp-ext:reachability* [address interface]
	+--ro peer* [direction peer advertisement-type]		| +--ro mldp-ext:address inet:ipv6-address
	+--ro direction ldp:downstream-upstream		| +--ro mldp-ext:interface if:interface-ref
	+--ro peer leafref		| +--ro mldp-ext:peer? -> ../../../../../../../../ldp:peers/peer/lsr-id
	+--ro advertisement-type ldp:advertised-received		+--ro mldp-ext:bindings
	+--ro label? rt-types:mpls-label		+--ro mldp-ext:opaque-type-lspid
	+--ro mbb-role? enumeration		| +--ro mldp-ext:fec-label* [lsp-id]
	+--ro mofrr-role? mofrr-role		| +--ro mldp-ext:lsp-id uint32
			| +--ro mldp-ext:multipoint-type? mldp:multipoint-type
			| +--ro mldp-ext:peer* [direction peer advertisement-type]
			| | +--ro mldp-ext:direction ldp:downstream-upstream
			| | +--ro mldp-ext:peer -> /rt:routing/control-plane-protocols/ldp:mpls-ldp/peers/peer/lsr-id
			| | +--ro mldp-ext:advertisement-type ldp:advertised-received
			| | +--ro mldp-ext:label? rt-types:mpls-label
			| | +--ro mldp-ext:mbb-role? enumeration
			| | +--ro mldp-ext:mofrr-role? mofrr-role
			| +--ro mldp-ext:recursive-fec* [recur-root-address recur-rd]
			| +--ro mldp-ext:recur-root-address inet:ip-address
			| +--ro mldp-ext:recur-rd route-distinguisher
			| +--ro mldp-ext:multipoint-type? mldp:multipoint-type
			| +--ro mldp-ext:peer* [direction peer advertisement-type]
			| +--ro mldp-ext:direction ldp:downstream-upstream
			| +--ro mldp-ext:peer -> /rt:routing/control-plane-protocols/ldp:mpls-ldp/peers/peer/lsr-id
			| +--ro mldp-ext:advertisement-type ldp:advertised-received
			| +--ro mldp-ext:label? rt-types:mpls-label
			| +--ro mldp-ext:mbb-role? enumeration
			| +--ro mldp-ext:mofrr-role? mofrr-role
			+--ro mldp-ext:opaque-type-transit
			| +--ro mldp-ext:fec-label* [source-address group-address rd recur-root-address recur-rd]
			| +--ro mldp-ext:source-address inet:ip-address
			| +--ro mldp-ext:group-address inet:ip-address-no-zone
			| +--ro mldp-ext:rd route-distinguisher
			| +--ro mldp-ext:recur-root-address inet:ip-address
			| +--ro mldp-ext:recur-rd route-distinguisher
			| +--ro mldp-ext:multipoint-type? mldp:multipoint-type
			| +--ro mldp-ext:peer* [direction peer advertisement-type]
			| +--ro mldp-ext:direction ldp:downstream-upstream
			| +--ro mldp-ext:peer -> /rt:routing/control-plane-protocols/ldp:mpls-ldp/peers/peer/lsr-id
			| +--ro mldp-ext:advertisement-type ldp:advertised-received
			| +--ro mldp-ext:label? rt-types:mpls-label
			| +--ro mldp-ext:mbb-role? enumeration
			| +--ro mldp-ext:mofrr-role? mofrr-role
			+--ro mldp-ext:opaque-type-bidir
			+--ro mldp-ext:fec-label* [rp group-address rd recur-root-address recur-rd]
			+--ro mldp-ext:rp inet:ip-address
			+--ro mldp-ext:group-address inet:ip-address-no-zone
			+--ro mldp-ext:rd route-distinguisher
			+--ro mldp-ext:recur-root-address inet:ip-address
			+--ro mldp-ext:recur-rd route-distinguisher
			+--ro mldp-ext:multipoint-type? mldp:multipoint-type
			+--ro mldp-ext:peer* [direction peer advertisement-type]
			+--ro mldp-ext:direction ldp:downstream-upstream
			+--ro mldp-ext:peer -> /rt:routing/control-plane-protocols/ldp:mpls-ldp/peers/peer/lsr-id
			+--ro mldp-ext:advertisement-type ldp:advertised-received
			+--ro mldp-ext:label? rt-types:mpls-label
			+--ro mldp-ext:mbb-role? enumeration
			+--ro mldp-ext:mofrr-role? mofrr-role
	Figure 6		Figure 6
	5.3. Derived states		5.3. Derived states
	Following are main areas for which mLDP operational derived state is		Following are main areas for which mLDP operational derived state is
	defined:		defined:
	o Root		o Root
	skipping to change at page 18, line 28 ¶		skipping to change at page 17, line 13 ¶
	LSP setup. Similarly, when protection mechanisms like MBB or MoFRR		LSP setup. Similarly, when protection mechanisms like MBB or MoFRR
	are in place, the path designation as active/standby or primary/		are in place, the path designation as active/standby or primary/
	backup is also done on per LSP basis. It is to be noted that a given		backup is also done on per LSP basis. It is to be noted that a given
	root can be shared amongst multiple P2MP and/or MP2MP LSPs.		root can be shared amongst multiple P2MP and/or MP2MP LSPs.
	Moreover, an LSP can be signaled to more than one root for RNR		Moreover, an LSP can be signaled to more than one root for RNR
	purposes.		purposes.
	The following diagram illustrates a root database on a branch/transit		The following diagram illustrates a root database on a branch/transit
	LSR:		LSR:
	root 1.1.1.1:		root 203.0.113.1:
	path1:		path1:
	RIB: GigEthernet 1/0, 12.1.0.2;		RIB: GigEthernet 1/0, 198.51.100.1;
	LDP: peer 192.168.0.1:0		LDP: peer 192.0.2.1:0
	path2:		path2:
	RIB: GigEthernet 2/0, 12.2.0.2;		RIB: GigEthernet 2/0, 198.51.100.16;
	LDP: peer 192.168.0.3:0		LDP: peer 192.0.2.2:0
	root 2.2.2.2:		root 203.0.113.2:
	path1:		path1:
	RIB: 3.3.3.3; (NOTE: This is a recursive path)		RIB: 198.51.100.100; (NOTE: This is a recursive path)
	LDP: peer 192.168.0.3:0 (NOTE: T-mLDP peer)		LDP: peer 192.0.2.100:0 (NOTE: T-mLDP peer)
	root 9.9.9.9:		root . . . .
	. . . .
	Figure 7		Figure 7
	A root entry on a root LSR itself will be presented as follows:		A root entry on a root LSR itself will be presented as follows:
	root 9.9.9.9:		root 203.0.113.10:
	is-self		is-self
	Figure 8		Figure 8
	5.3.2. Bindings state		5.3.2. Bindings state
	Binding state provides information on mLDP FEC-label bindings for		Binding state provides information on mLDP FEC-label bindings for
	both P2MP and MP2MP FEC types. Like LDP, the FEC-label binding		both P2MP and MP2MP FEC types. Like LDP, the FEC-label binding
	derived state is presented in a FEC-centric view per address-family,		derived state is presented in a FEC-centric view per address-family,
	and provides information on both inbound (received) and outbound		and provides information on both inbound (received) and outbound
	skipping to change at page 20, line 10 ¶		skipping to change at page 18, line 15 ¶
	and MoFRR (primary or backup).		and MoFRR (primary or backup).
	Following captures a high level tree hierarchy for mLDP bindings		Following captures a high level tree hierarchy for mLDP bindings
	state:		state:
	+--rw mpls-ldp!		+--rw mpls-ldp!
	+--rw global		+--rw global
	+--rw mldp		+--rw mldp
	+--rw address-families		+--rw address-families
	+--rw ipv4 (or ipv6)		+--rw ipv4 (or ipv6)
	+--ro state
	+--ro roots		+--ro roots
	+--ro root* [root-address]		+--ro root* [root-address]
	+--ro ....		+--ro ....
	+--ro bindings		+--ro bindings
	+--ro opaque-type-xxx		+--ro opaque-type-xxx
	| +--ro fec-label* [type-specific-key]		| +--ro fec-label* [type-specific-key]
	| +--ro some_key_1 ...		| +--ro some_key_1 ...
	| +--ro some_key_2 ...		| +--ro some_key_2 ...
	| +--ro multipoint-type? multipoint-type		| +--ro multipoint-type? multipoint-type
	| +--ro peer* [direction peer advertisement-type]		| +--ro peer* [direction peer advertisement-type]
	| | +--ro direction ldp:downstream-upstream		| | +--ro direction ldp:downstream-upstream
	| | +--ro peer leafref		| | +--ro peer leafref
	| | +--ro advertisement-type ldp:advertised-received		| | +--ro advertisement-type ldp:advertised-received
	| | +--ro label? rt-types:mpls-label		| | +--ro label? mpls:mpls-label
	| | +--ro mbb-role? enumeration		| | +--ro mbb-role? enumeration
	| | +--ro mldp-ext:mofrr-role? mofrr-role		| | +--ro mldp-ext:mofrr-role? mofrr-role
	+--ro opaque-type-yyy		+--ro opaque-type-yyy
	| +--ro fec-label* [type-specific-key]		| +--ro fec-label* [type-specific-key]
	| +--ro some_key_1 ...		| +--ro some_key_1 ...
	...		...
	Figure 9		Figure 9
	mLDP binding state is organized and presented per root address, and		mLDP binding state is organized and presented per root address, and
	skipping to change at page 21, line 17 ¶		skipping to change at page 19, line 25 ¶
	opaque types as defined in [RFC6512]		opaque types as defined in [RFC6512]
	o In case of a recursive FEC, the address-family of the recur-root-		o In case of a recursive FEC, the address-family of the recur-root-
	address could be different than the address-family of the root		address could be different than the address-family of the root
	address of original encapsulated MP FEC		address of original encapsulated MP FEC
	The following diagram illustrates the FEC-label binding information		The following diagram illustrates the FEC-label binding information
	structure for a P2MP (Transit IPv4 Source type) LSP on a branch/		structure for a P2MP (Transit IPv4 Source type) LSP on a branch/
	transit LSR:		transit LSR:
	FEC (root 2.2.2.2, S=192.168.1.1, G=224.1.1.1):		FEC (root 203.0.113.1, S=198.51.100.1, G=224.1.1.1):
	type: p2mp		type: p2mp
	upstream:		upstream:
	advertised:		advertised:
	peer 192.168.0.1:0, label 16000 (local)		peer 192.0.2.1:0, label 16000 (local)
	downstream:		downstream:
	received:		received:
	peer 192.168.0.2:0, label 17000 (remote)		peer 192.0.2.2:0, label 17000 (remote)
	peer 192.168.0.3:0, label 18000 (remote)		peer 192.0.2.3:0, label 18000 (remote)
	Figure 10		Figure 10
	The following diagram illustrates the FEC-label binding information		The following diagram illustrates the FEC-label binding information
	structure for a similar MP2MP LSP on a branch/transit LSR:		structure for a similar MP2MP LSP on a branch/transit LSR:
	FEC (root 2.2.2.2, RP=192.168.9.9, G=224.1.1.1):		FEC (root 203.0.113.2, RP=198.51.100.2, G=224.1.1.1):
	type: mp2mp		type: mp2mp
	upstream:		upstream:
	advertised:		advertised:
	peer 192.168.0.1:0, label 16000 (local)		peer 192.0.2.1:0, label 16000 (local)
	received:		received:
	peer 192.168.0.1:0, label 17000 (remote)		peer 192.0.2.1:0, label 17000 (remote)
	downstream:		downstream:
	advertised:		advertised:
	peer 192.168.0.2:0, label 16001 (local), MBB role=active		peer 192.0.2.2:0, label 16001 (local), MBB role=active
	peer 192.168.0.3:0, label 16002 (local), MBB role=standby		peer 192.0.2.3:0, label 16002 (local), MBB role=standby
	received:		received:
	peer 192.168.0.2:0, label 17001 (remote)		peer 192.0.2.2:0, label 17001 (remote)
	peer 192.168.0.3:0, label 18001 (remote)		peer 192.0.2.3:0, label 18001 (remote)
	Figure 11		Figure 11
	5.3.3. Capabilities state		5.3.3. Capabilities state
	Like LDP, mLDP capabilities state comprise two types of information:		Like LDP, mLDP capabilities state comprise two types of information:
	o global: augments ldp:global/ldp:state/ldp:capability.		o global: augments ldp:global/ldp:state/ldp:capability.
	o per-peer: augments ldp:peers/ldp:peer/ldp:state/ldp:capability		o per-peer: augments ldp:peers/ldp:peer/ldp:state/ldp:capability
	skipping to change at page 22, line 23 ¶		skipping to change at page 21, line 5 ¶
	6. Notifications		6. Notifications
	mLDP notification module consists of notification related to changes		mLDP notification module consists of notification related to changes
	in the operational state of an mLDP FEC.		in the operational state of an mLDP FEC.
	6.1. Base		6.1. Base
	Following is a simplified graphical representation of the base data		Following is a simplified graphical representation of the base data
	model for mLDP notifications:		model for mLDP notifications:
	module: ietf-mpls-mldp		module: ietf-mpls-mldp
	notifications:		notifications:
	+---n mpls-mldp-fec-event		+---n mpls-mldp-fec-event
	+--ro event-type? ldp:oper-status-event-type		+--ro event-type? ldp:oper-status-event-type
	+--ro tree-type? multipoint-type		+--ro (opaque-type)?
	+--ro root? inet:ip-address		+--:(opaque-type-lspid)
	+--ro (lsp-key-type)?		+--ro opaque-type-lspid
	+--:(lsp-id)		+--ro root-address? inet:ip-address
	+--ro lsp-id? uint16		+--ro lsp-id? uint32
			+--ro multipoint-type? multipoint-type
			+--ro mldp-ext:recursive-fec
			+--ro mldp-ext:recur-root-address? inet:ip-address
			+--ro mldp-ext:recur-rd? route-distinguisher
			+--ro mldp-ext:multipoint-type? mldp:multipoint-type
	Figure 12		Figure 12
	6.2. Extended		6.2. Extended
	Following is a simplified graphical representation of the extended		Following is a simplified graphical representation of the extended
	data model for mLDP notifications:		data model for mLDP notifications:
	module: ietf-mpls-mldp		module: ietf-mpls-mldp
			notifications:
	augment /mldp:mpls-mldp-fec-event/mldp:lsp-key-type:		+---n mpls-mldp-fec-event
	+--:(source-group-based)		+--ro event-type? ldp:oper-status-event-type
	+---- source-address? inet:ip-address		+--ro (opaque-type)?
	+---- group-address? inet:ip-address		+--:(mldp-ext:opaque-type-transit)
			| +--ro mldp-ext:opaque-type-transit
			| +--ro mldp-ext:root-address? inet:ip-address
			| +--ro mldp-ext:source-address? inet:ip-address
			| +--ro mldp-ext:group-address? inet:ip-address-no-zone
			| +--ro mldp-ext:rd? route-distinguisher
			| +--ro mldp-ext:recur-root-address? inet:ip-address
			| +--ro mldp-ext:recur-rd? route-distinguisher
			| +--ro mldp-ext:multipoint-type? mldp:multipoint-type
			+--:(mldp-ext:opaque-type-bidir)
			+--ro mldp-ext:opaque-type-bidir
			+--ro mldp-ext:root-address? inet:ip-address
			+--ro mldp-ext:rp? inet:ip-address
			+--ro mldp-ext:group-address? inet:ip-address-no-zone
			+--ro mldp-ext:rd? route-distinguisher
			+--ro mldp-ext:recur-root-address? inet:ip-address
			+--ro mldp-ext:recur-rd? route-distinguisher
			+--ro mldp-ext:multipoint-type? mldp:multipoint-type
	Figure 13		Figure 13
	7. Actions		7. Actions
	Currently, no RPCs/actions are defined for mLDP.		Currently, no RPCs/actions are defined for mLDP.
	8. Open Items		8. Open Items
	Following is a list of open items that are to be discussed and		Following is a list of open items that are to be discussed and
	addressed in future revisions of this document:		addressed in future revisions of this document:
	o Align operational state modeling with other routing protocols and
	[I-D.openconfig-netmod-opstate]
	o Specify default values for configuration parameters		o Specify default values for configuration parameters
	o Extend the "Configured Leaf LSPs" for various type of opaque-types		o Extend the "Configured Leaf LSPs" for various type of opaque-types
	o Extend mLDP notifications for other types of opaque values as well		o Extend mLDP notifications for other types of opaque values as well
	o Make MP LSP configuration and state model consistent		o Make MP LSP configuration and state model consistent
	9. YANG Specification		9. YANG Specification
	Following is the actual YANG definition (module) for mLDP constructs		Following is the actual YANG definition (module) for mLDP constructs
	defined earlier in the document.		defined earlier in the document.
	9.1. Base		9.1. Base
	<CODE BEGINS> file "ietf-mpls-mldp@2017-03-12.yang"		<CODE BEGINS> file "ietf-mpls-mldp@2017-10-19.yang"
	module ietf-mpls-mldp {		module ietf-mpls-mldp {
	namespace "urn:ietf:params:xml:ns:yang:ietf-mpls-mldp";		namespace "urn:ietf:params:xml:ns:yang:ietf-mpls-mldp";
	prefix "mldp";		prefix "mldp";
	import ietf-inet-types {		import ietf-inet-types {
	prefix "inet";		prefix "inet";
	}		}
			import ietf-interfaces {
			prefix "if";
			}
			import ietf-mpls-ldp {
			prefix "ldp";
			}
	import ietf-routing {		import ietf-routing {
	prefix "rt";		prefix "rt";
	}		}
	import ietf-routing-types {		import ietf-routing-types {
	prefix "rt-types";		prefix "rt-types";
	}		}
	import ietf-mpls-ldp {
	prefix "ldp";
	}
	organization		organization
	"IETF MPLS Working Group";		"IETF MPLS Working Group";
	contact		contact
	"WG Web: <http://tools.ietf.org/wg/teas/>		"WG Web: <http://tools.ietf.org/wg/teas/>
	WG List: <mailto:teas@ietf.org>		WG List: <mailto:teas@ietf.org>
	WG Chair: Loa Andersson		WG Chair: Loa Andersson
	<mailto:loa@pi.nu>		<mailto:loa@pi.nu>
	WG Chair: Ross Callon		WG Chair: Ross Callon
	skipping to change at page 24, line 45 ¶		skipping to change at page 24, line 29 ¶
	<mailto:jescia.chenxia@huawei.com>		<mailto:jescia.chenxia@huawei.com>
	Editor: Himanshu Shah		Editor: Himanshu Shah
	<mailto:hshah@ciena.com>";		<mailto:hshah@ciena.com>";
	description		description
	"This YANG module defines the essential components for the		"This YANG module defines the essential components for the
	management of Multi-Protocol Label Switching (MPLS) Multipoint		management of Multi-Protocol Label Switching (MPLS) Multipoint
	LDP (mLDP).";		LDP (mLDP).";
	revision 2017-03-12 {		revision 2017-10-19 {
	description		description
	"Initial revision.";		"Initial revision.";
	reference		reference
	"RFC XXXX: YANG Data Model for MPLS mLDP.";		"RFC XXXX: YANG Data Model for MPLS mLDP.";
	}		}
	/*		/*
	* Typedefs		* Typedefs
	*/		*/
	typedef multipoint-type {		typedef multipoint-type {
	type enumeration {		type enumeration {
	enum p2mp {		enum p2mp {
	description "Point to multipoint.";		description "Point to multipoint.";
	}		}
	enum mp2mp {		enum mp2mp {
	description "Multipoint to multipoint.";		description "Multipoint to multipoint.";
	skipping to change at page 26, line 20 ¶		skipping to change at page 26, line 4 ¶
	"Switchover delay in seconds.";		"Switchover delay in seconds.";
	}		}
	leaf timeout {		leaf timeout {
	type uint16;		type uint16;
	units seconds;		units seconds;
	description		description
	"Timeout in seconds.";		"Timeout in seconds.";
	}		}
	}		}
	} // mldp-capabilities		} // mldp-capabilities
	grouping mldp-fec-event {		grouping mldp-fec-event {
	description		description
	"A mLDP FEC event.";		"A mLDP FEC event.";
	leaf tree-type {		choice opaque-type {
	type multipoint-type;
	description
	"p2mp or mp2mp.";
	}
	leaf root {
	type inet:ip-address;
	description
	"Root address.";
	}
	choice lsp-key-type {
	description		description
	"LSP ID based or source-group based .";		"The type of opaque value element.";
	case lsp-id {		case opaque-type-lspid {
	leaf lsp-id {		container opaque-type-lspid {
	type uint16;
	description		description
	"ID to identify the LSP.";		"The type of opaque value element is
	}		the generic LSP identifier";
			reference
			"RFC6388: Label Distribution Protocol
			Extensions for Point-to-Multipoint and
			Multipoint-to-Multipoint Label Switched
			Paths.";
			leaf root-address {
			type inet:ip-address;
			description
			"Root address.";
			}
			leaf lsp-id {
			type uint32;
			description "ID to identify the LSP.";
			}
			leaf multipoint-type {
			type multipoint-type;
			description
			"The type of mutipoint, p2mp or mp2mp.";
			}
			} // container opaque-type-lspid
	}		}
	}		}
	} // mldp-fec-event		} // mldp-fec-event
	grouping mldp-binding-label-peer-state-attributes {		grouping mldp-binding-label-peer-state-attributes {
	description		description
	"mLDP label binding per peer attributes.";		"mLDP label binding per peer attributes.";
	leaf direction {		leaf direction {
	type ldp:downstream-upstream;		type ldp:downstream-upstream;
	description		description
	skipping to change at page 27, line 50 ¶		skipping to change at page 27, line 44 ¶
	}		}
	}		}
	description		description
	"The MBB status of this LSP.";		"The MBB status of this LSP.";
	}		}
	} // mldp-binding-label-peer-state-attributes		} // mldp-binding-label-peer-state-attributes
	grouping mldp-binding-label-state-attributes {		grouping mldp-binding-label-state-attributes {
	description		description
	"mLDP label binding attributes.";		"mLDP label binding attributes.";
	leaf multipoint-type {
	type multipoint-type;
	description
	"The type of mutipoint, p2mp or mp2mp.";
	}
	list peer {		list peer {
	key "direction peer advertisement-type";		key "direction peer advertisement-type";
	description		description
	"List of advertised and received peers.";		"List of advertised and received peers.";
	uses mldp-binding-label-peer-state-attributes;		uses mldp-binding-label-peer-state-attributes;
	} // peer		} // peer
	} // mldp-binding-label-state-attributes		} // mldp-binding-label-state-attributes
	grouping mldp-ipv4-configured-lsp-roots {
	description
	"mLDP IPv4 roots containers.";
	container roots {
	description
	"Configured IPv4 multicast LSPs.";
	list root {
	key "root-address";
	description
	"List of roots for configured multicast LSPs.";
	leaf root-address {
	type inet:ipv4-address;
	description
	"Root address.";
	}
	choice lsp-key-type {
	description
	"LSP ID based or source-group based .";
	case lsp-id {
	container opaque-type-lspid {
	description
	"The type of opaque value element is
	the generic LSP identifier";
	list lsp {
	key "lsp-id";
	description
	"List of LSPs.";
	leaf lsp-id {
	type uint16;
	description "ID to identify the LSP.";
	}
	} // list lsp
	} // opaque-type-lspid
	} // case lsp-id
	} // choice lsp-key-type
	} // list root
	} // roots
	} // mldp-ipv4-configured-lsp-roots
	/*		/*
	* Configuration data nodes		* Configuration data and operational state data nodes
	*/		*/
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/ldp:config/ldp:capability" {		+ "ldp:mpls-ldp/ldp:global/ldp:capability" {
	description "Augmentation for MLDP global capability.";		description "Augmentation for MLDP global capability.";
	container mldp {		container mldp {
	description		description
	"Multipoint capabilities.";		"Multipoint capabilities.";
	uses mldp-capabilities;		uses mldp-capabilities;
	}		}
	}		}
	/*		/*
	* Operational state data nodes		* Operational state data nodes
	*/		*/
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/ldp:state/ldp:capability" {		+ "ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:received-peer-state/"
	description "Augmentation for MLDP global capability.";		+ "ldp:capability" {
	container mldp {
	description
	"Multipoint capabilities.";
	uses mldp-capabilities;
	}
	}
	augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:state/"
	+ "ldp:received-peer-state/ldp:capability" {
	description		description
	"Augmentation for MLDP received peer state capability.";		"Augmentation for MLDP received peer state capability.";
	container mldp {		container mldp {
	description		description
	"Multipoint capabilities.";		"Multipoint capabilities.";
	container p2mp {		container p2mp {
	description		description
	"Configure point-to-multipoint capability.";		"Configure point-to-multipoint capability.";
	leaf enable {		leaf enable {
	skipping to change at page 30, line 41 ¶		skipping to change at page 29, line 23 ¶
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global" {		+ "ldp:mpls-ldp/ldp:global" {
	description "MLDP global augmentation.";		description "MLDP global augmentation.";
	container mldp {		container mldp {
	description		description
	"mLDP attributes at per instance level. Defining		"mLDP attributes at per instance level. Defining
	attributes here does not enable any MP capabilities.		attributes here does not enable any MP capabilities.
	MP capabilities need to be explicitly enabled under		MP capabilities need to be explicitly enabled under
	container capability.";		container capability.";
	container config {		leaf enable {
	description		type boolean;
	"Configuration data.";
	leaf enable {
	type boolean;
	description
	"Enable mLDP.";
	}
	}
	container state {
	config false;
	description		description
	"Operational state data.";		"Enable mLDP.";
	leaf enable {
	type boolean;
	description
	"Enable mLDP.";
	}
	}		}
	container address-families {		container address-families {
	description		description
	"Per-af params.";		"Per-af params.";
	container ipv4 {		container ipv4 {
	description		description
	"IPv4 information.";		"IPv4 information.";
	container state {		container roots {
	config false;		config false;
	description		description
	"Operational state data.";		"IPv4 multicast LSP roots.";
			list root {
	container roots {		key "root-address";
	description		description
	"IPv4 multicast LSP roots.";		"List of roots for configured multicast LSPs.";
	list root {
	key "root-address";		leaf root-address {
			type inet:ipv4-address;
	description		description
	"List of roots for configured multicast LSPs.";		"Root address.";
			}
	leaf root-address {		leaf is-self {
			type boolean;
			description
			"This is the root.";
			}
			list reachability {
			key "address interface";
			description
			"A next hop for reachability to root,
			as a RIB view.";
			leaf address {
	type inet:ipv4-address;		type inet:ipv4-address;
	description		description
	"Root address.";		"The next hop address to reach root.";
	}		}
			leaf interface {
	leaf is-self {		type if:interface-ref;
	type boolean;
	description		description
	"This is the root.";		"Interface connecting to next-hop.";
	}		}
			leaf peer {
	list reachability {		type leafref {
	key "address interface";		path
	description		"../../../../../../../../ldp:peers/"
	"A next hop for reachability to root,		+ "ldp:peer/ldp:lsr-id";
	as a RIB view.";
	leaf address {
	type inet:ipv4-address;
	description
	"The next hop address to reach root.";
	}
	leaf interface {
	type ldp:mpls-interface-ref;
	description
	"Interface connecting to next-hop.";
	}
	leaf peer {
	type leafref {
	path
	"../../../../../../../../../ldp:peers/"
	+ "ldp:peer/ldp:lsr-id";
	}
	description
	"LDP peer from which this next hop can be
	reached.";
	}		}
			description
			"LDP peer from which this next hop can be
			reached.";
	}		}
			}
	container bindings {		container bindings {
			description
			"mLDP FEC to label bindings.";
			container opaque-type-lspid {
	description		description
	"mLDP FEC to label bindings.";		"The type of opaque value element is
	container opaque-type-lspid {
	description
	"The type of opaque value element is
	the generic LSP identifier";		the generic LSP identifier";
	reference		reference
	"RFC6388: Label Distribution Protocol		"RFC6388: Label Distribution Protocol
	Extensions for Point-to-Multipoint and		Extensions for Point-to-Multipoint and
	Multipoint-to-Multipoint Label Switched		Multipoint-to-Multipoint Label Switched
	Paths.";		Paths.";
	list fec-label {		list fec-label {
	key		key
	"lsp-id";		"lsp-id";
			description
			"List of FEC to label bindings.";
			leaf lsp-id {
			type uint32;
			description "ID to identify the LSP.";
			}
			leaf multipoint-type {
			type multipoint-type;
	description		description
	"List of FEC to label bindings.";		"The type of mutipoint, p2mp or mp2mp.";
	leaf lsp-id {		}
	type uint32;		uses mldp-binding-label-state-attributes;
	description "ID to identify the LSP.";		} // fec-label
	}		} // opaque-type-lspid
	uses mldp-binding-label-state-attributes;		} // bindings
	} // fec-label		} // list root
	} // opaque-type-lspid		} // roots
	} // bindings
	} // list root
	} // roots
	} // state
	container configured-leaf-lsps {		container configured-leaf-lsps {
	description		description
	"Configured multicast LSPs.";		"Configured multicast LSPs.";
			container opaque-type-lspid {
	container p2mp {
	description
	"Configured point-to-multipoint LSPs.";
	uses mldp-ipv4-configured-lsp-roots;
	}
	container mp2mp {
	description		description
	"Configured multipoint-to-multipoint LSPs.";		"The type of opaque value element is
	uses mldp-ipv4-configured-lsp-roots;		the generic LSP identifier";
	}		reference
			"RFC6388: Label Distribution Protocol
			Extensions for Point-to-Multipoint and
			Multipoint-to-Multipoint Label Switched
			Paths.";
			list fec-label {
			key
			"root-address lsp-id";
			description
			"List of FEC to label bindings.";
			leaf root-address {
			type inet:ipv4-address;
			description
			"Root address.";
			}
			leaf lsp-id {
			type uint32;
			description "ID to identify the LSP.";
			}
			leaf multipoint-type {
			type multipoint-type;
			description
			"The type of mutipoint, p2mp or mp2mp.";
			}
			} // fec-label
			} // opaque-type-lspid
	} // configured-leaf-lsps		} // configured-leaf-lsps
	} // ipv4		} // ipv4
	} // list address-family		} // list address-family
	} // mldp		} // mldp
	}		}
	/*		/*
	* Notifications		* Notifications
	*/		*/
	notification mpls-mldp-fec-event {		notification mpls-mldp-fec-event {
	skipping to change at page 33, line 44 ¶		skipping to change at page 32, line 33 ¶
	uses mldp-fec-event;		uses mldp-fec-event;
	}		}
	}		}
	<CODE ENDS>		<CODE ENDS>
	Figure 14		Figure 14
	9.2. Extended		9.2. Extended
	<CODE BEGINS> file "ietf-mpls-mldp-extended@2017-03-12.yang"		<CODE BEGINS> file "ietf-mpls-mldp-extended@2017-10-19.yang"
	module ietf-mpls-mldp-extended {		module ietf-mpls-mldp-extended {
	namespace "urn:ietf:params:xml:ns:yang:ietf-mpls-mldp-extended";		namespace "urn:ietf:params:xml:ns:yang:ietf-mpls-mldp-extended";
	prefix "mldp-ext";		prefix "mldp-ext";
	import ietf-inet-types {		import ietf-inet-types {
	prefix "inet";		prefix "inet";
	}		}
			import ietf-interfaces {
			prefix "if";
			}
	import ietf-routing {		import ietf-routing {
	prefix "rt";		prefix "rt";
	}		}
	import ietf-mpls-ldp {		import ietf-mpls-ldp {
	prefix "ldp";		prefix "ldp";
	}		}
	import ietf-mpls-ldp-extended {		import ietf-mpls-ldp-extended {
	prefix "ldp-ext";		prefix "ldp-ext";
	}		}
	import ietf-mpls-mldp {		import ietf-mpls-mldp {
	prefix "mldp";		prefix "mldp";
	}		}
	organization		organization
	"IETF MPLS Working Group";		"IETF MPLS Working Group";
	skipping to change at page 35, line 14 ¶		skipping to change at page 34, line 6 ¶
	<mailto:jescia.chenxia@huawei.com>		<mailto:jescia.chenxia@huawei.com>
	Editor: Himanshu Shah		Editor: Himanshu Shah
	<mailto:hshah@ciena.com>";		<mailto:hshah@ciena.com>";
	description		description
	"This YANG module defines the essential components for the		"This YANG module defines the essential components for the
	management of Multi-Protocol Label Switching (MPLS) Multipoint		management of Multi-Protocol Label Switching (MPLS) Multipoint
	LDP (mLDP).";		LDP (mLDP).";
	revision 2017-03-12 {		revision 2017-10-19 {
	description		description
	"Initial revision.";		"Initial revision.";
	reference		reference
	"RFC XXXX: YANG Data Model for MPLS mLDP.";		"RFC XXXX: YANG Data Model for MPLS mLDP.";
	}		}
	/*		/*
	* Features		* Features
	*/		*/
	feature capability-mldp-hsmp {		feature capability-mldp-hsmp {
	skipping to change at page 36, line 36 ¶		skipping to change at page 35, line 28 ¶
	status of a LSP.";		status of a LSP.";
	}		}
	/*		/*
	* Groupings		* Groupings
	*/		*/
	grouping mldp-ext-binding-label-state-attributes {		grouping mldp-ext-binding-label-state-attributes {
	description		description
	"mLDP label binding attributes.";		"mLDP label binding attributes.";
	leaf multipoint-type {
	type mldp:multipoint-type;
	description
	"The type of mutipoint, p2mp or mp2mp.";
	}
	list peer {		list peer {
	key "direction peer advertisement-type";		key "direction peer advertisement-type";
	description		description
	"List of advertised and received peers.";		"List of advertised and received peers.";
	uses mldp:mldp-binding-label-peer-state-attributes;		uses mldp:mldp-binding-label-peer-state-attributes;
	leaf mofrr-role {		leaf mofrr-role {
	when "../direction = 'upstream'" {		when "../direction = 'upstream'" {
	description		description
	"For upstream.";		"For upstream.";
	skipping to change at page 39, line 51 ¶		skipping to change at page 38, line 38 ¶
	description		description
	"Recursive FEC policy.";		"Recursive FEC policy.";
	leaf prefix-list {		leaf prefix-list {
	type ldp-ext:prefix-list-ref;		type ldp-ext:prefix-list-ref;
	description		description
	"Enables recursive FEC for the specified access list.";		"Enables recursive FEC for the specified access list.";
	}		}
	} // recursive-for		} // recursive-for
	} // mldp-ext-per-af-config-attibutes		} // mldp-ext-per-af-config-attibutes
			grouping recursive-fec-attibutes {
			description
			"mLDP recursive FEC attibutes.";
			leaf recur-root-address {
			type inet:ip-address;
			description
			"Recursive root address.";
			reference
			"RFC6512: Using Multipoint LDP When the
			Backbone Has No Route to the Root";
			}
			leaf recur-rd {
			type route-distinguisher;
			description
			"Route Distinguisher in the VPN-Recursive
			Opaque Value.";
			reference
			"RFC6512: Using Multipoint LDP When the
			Backbone Has No Route to the Root";
			}
			leaf multipoint-type {
			type mldp:multipoint-type;
			description
			"The type of mutipoint, p2mp or mp2mp.";
			}
			} // recursive-fec-attibutes
	/*		/*
	* Configuration data nodes		* Configuration data and operational state data nodes
	*/		*/
	// Global capability config		// Global capability
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/ldp:config/ldp:capability/"		+ "ldp:mpls-ldp/ldp:global/ldp:capability/mldp:mldp" {
	+ "mldp:mldp" {
	description "Augmentation for MLDP global capability.";		description "Augmentation for MLDP global capability.";
	uses mldp-ext-capabilities;		uses mldp-ext-capabilities;
	}		}
	// Peer capability config		// Peer capability
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:config/ldp:capability" {		+ "ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:capability" {
	description "Augmentation for MLDP peer capability.";		description "Augmentation for MLDP peer capability.";
	container mldp {		container mldp {
	if-feature per-peer-capability;		if-feature per-peer-capability;
	description		description
	"mLDP capabilities.";		"mLDP capabilities.";
	uses mldp:mldp-capabilities;		uses mldp:mldp-capabilities;
	}		}
	}		}
	// IPv4 config		// IPv4 config
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"		+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"
	+ "mldp:ipv4" {		+ "mldp:ipv4" {
	description "Augmentation for MLDP IPv4 configuration.";		description "Augmentation for MLDP IPv4 configuration.";
	container config {		uses mldp-ext-per-af-config-attibutes;
	description
	"Configuration data.";
	uses mldp-ext-per-af-config-attibutes;
	}
	}		}
	// IPv4 configured-leaf-lsps config		// IPv4 configured-leaf-lsps config
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"		+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"
	+ "mldp:ipv4/mldp:configured-leaf-lsps/mldp:p2mp/mldp:roots/"		+ "mldp:ipv4/mldp:configured-leaf-lsps/mldp:opaque-type-lspid/"
	+ "mldp:root/mldp:lsp-key-type" {		+ "mldp:fec-label" {
	description		description
	"Augmentation for MLDP IPv4 configured-leaf-lsps		"Augmentation for MLDP IPv4 configured-leaf-lsps
	configuration.";		configuration for opaque-type-lspid.";
	case source-group {		list recursive-fec {
	container opaque-type-transit {		key
	description		"recur-root-address recur-rd";
	"The type of opaque value element is the transit IPv4		description
	source.";		"List of recursive opaque values.";
			uses recursive-fec-attibutes;
	list lsp {		} // fec-label
	key "source-address group-address";
	description
	"List of LSPs.";
	leaf source-address {
	type inet:ipv4-address;
	description
	"Source address.";
	}
	leaf group-address {
	type inet:ipv4-address-no-zone;
	description
	"Group address.";
	}
	}
	}
	} // case source-group
	}		}
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"		+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"
	+ "mldp:ipv4/mldp:configured-leaf-lsps/mldp:mp2mp/mldp:roots/"		+ "mldp:ipv4/mldp:configured-leaf-lsps" {
	+ "mldp:root/mldp:lsp-key-type" {
	description		description
	"Augmentation for MLDP IPv4 configured-leaf-lsps		"Augmentation for MLDP IPv4 configured-leaf-lsps
	configuration.";		configuration.";
	case source-group {
	container opaque-type-transit {		container opaque-type-transit {
			description
			"The type of opaque value element is the transit IPv4
			source.";
			reference
			"RFC6826: Multipoint LDP In-Band Signaling for
			Point-to-Multipoint and
			Multipoint-to-Multipoint Label Switched Paths.";
			list fec-label {
			key
			"root-address source-address group-address "
			+ "rd recur-root-address recur-rd";
	description		description
	"The type of opaque value element is the transit IPv4		"List of FEC to label bindings.";
	source.";		leaf root-address {
	list lsp {		type inet:ipv4-address;
	key "source-address group-address";
	description		description
	"List of LSPs.";		"Root address.";
	leaf source-address {
	type inet:ipv4-address;
	description
	"Source address.";
	}
	leaf group-address {
	type inet:ipv4-address-no-zone;
	description
	"Group address.";
	}
	}		}
	}		leaf source-address {
	} // case source-group		type inet:ip-address;
			description
			"Source address.";
			}
			leaf group-address {
			type inet:ip-address-no-zone;
			description
			"Group address.";
			}
			leaf rd {
			type route-distinguisher;
			description
			"Route Distinguisher.";
			reference
			"RFC7246: Multipoint Label Distribution
			Protocol In-Band Signaling in a Virtual
			Routing and Forwarding (VRF) Table
			Context.";
			}
			uses recursive-fec-attibutes;
			} // fec-label
			} // opaque-type-transit
			container opaque-type-bidir {
			description
			"The type of opaque value element is
			the generic LSP identifier";
			reference
			"RFC6826: Multipoint LDP In-Band Signaling for
			Point-to-Multipoint and
			Multipoint-to-Multipoint Label Switched
			Paths.";
			list fec-label {
			key
			"root-address rp group-address rd recur-root-address "
			+ "recur-rd";
			description
			"List of FEC to label bindings.";
			leaf root-address {
			type inet:ipv4-address;
			description
			"Root address.";
			}
			leaf rp {
			type inet:ip-address;
			description
			"RP address.";
			}
			leaf group-address {
			type inet:ip-address-no-zone;
			description
			"Group address.";
			}
			leaf rd {
			type route-distinguisher;
			description
			"Route Distinguisher.";
			reference
			"RFC7246: Multipoint Label Distribution
			Protocol In-Band Signaling in a Virtual
			Routing and Forwarding (VRF) Table
			Context.";
			}
			uses recursive-fec-attibutes;
			} // fec-label
			} // opaque-type-bidir
	}		}
	// IPv6 config		// IPv6 config
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"		+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"
	+ "ipv6" {		+ "ipv6" {
	description "Augmentation for MLDP IPv4 configuration.";		description "Augmentation for MLDP IPv4 configuration.";
	container config {		uses mldp-ext-per-af-config-attibutes;
	description
	"Configuration data.";
	uses mldp-ext-per-af-config-attibutes;
	}
	}		}
	// Global forwarding-nexthop config		// Global forwarding-nexthop
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/ldp-ext:forwarding-nexthop/"		+ "ldp:mpls-ldp/ldp:global/ldp-ext:forwarding-nexthop/"
	+ "ldp-ext:interfaces/ldp-ext:interface/ldp-ext:address-family/"		+ "ldp-ext:interfaces/ldp-ext:interface/ldp-ext:address-family" {
	+ "ldp-ext:config" {
	description		description
	"Augmentation for MLDP nexthop forwarding interface.";		"Augmentation for MLDP nexthop forwarding interface.";
	leaf mldp-disable {		leaf mldp-disable {
	type boolean;		type boolean;
	description		description
	"Disable mLDP forwarding on the interface.";		"Disable mLDP forwarding on the interface.";
	}		}
	}		}
	/*		/*
	* Operational state data nodes		* Operational state data nodes
	*/		*/
	// Global capability state
	augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/ldp:state/ldp:capability/"
	+ "mldp:mldp" {
	description "Augmentation for MLDP global capability.";
	uses mldp-ext-capabilities;
	}
	// Peer capability state
	augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:state/ldp:capability" {
	description "Augmentation for MLDP peer capability.";
	container mldp {
	description
	"mLDP capabilities.";
	uses mldp:mldp-capabilities;
	}
	}
	// IPv4 state
	augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"
	+ "mldp:ipv4/mldp:state" {
	description "Augmentation for MLDP IPv4 state.";
	uses mldp-ext-per-af-config-attibutes;
	}
	// IPv4 state for per peer bindings		// IPv4 state for per peer bindings
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"		+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"
	+ "mldp:ipv4/mldp:state/mldp:roots/mldp:root/mldp:bindings/"		+ "mldp:ipv4/mldp:roots/mldp:root/mldp:bindings/"
	+ "mldp:opaque-type-lspid/mldp:fec-label/mldp:peer" {		+ "mldp:opaque-type-lspid/mldp:fec-label/mldp:peer" {
	description "Augmentation for MLDP IPv4 state.";		description "Augmentation for MLDP IPv4 state.";
	leaf mofrr-role {		leaf mofrr-role {
	when "../mldp:direction = 'upstream'" {		when "../mldp:direction = 'upstream'" {
	description		description
	"For upstream.";		"For upstream.";
	}		}
	type mofrr-role;		type mofrr-role;
	description		description
	"The MOFRR status of this LSP.";		"The MOFRR status of this LSP.";
	}		}
	}		}
	// IPv6 state
	augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"
	+ "ipv6/state" {
	description "Augmentation for MLDP IPv6 state.";
	uses mldp-ext-per-af-config-attibutes;
	}
	// Global forwarding-nexthop config
	augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/ldp-ext:forwarding-nexthop/"
	+ "ldp-ext:interfaces/ldp-ext:interface/ldp-ext:address-family/"
	+ "ldp-ext:state" {
	description
	"Augmentation for MLDP nexthop forwarding interface.";
	leaf mldp-disable {
	type boolean;
	description
	"Disable mLDP forwarding on the interface.";
	}
	}
	// Peer capability state		// Peer capability state
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:state/"		+ "ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:received-peer-state/"
	+ "ldp:received-peer-state/ldp:capability/mldp:mldp" {		+ "ldp:capability/mldp:mldp" {
	description		description
	"Augmentation for MLDP received peer state capability.";		"Augmentation for MLDP received peer state capability.";
	container hub-and-spoke {		container hub-and-spoke {
	description		description
	"Configure hub-and-spoke-multipoint capability.";		"Configure hub-and-spoke-multipoint capability.";
	reference		reference
	"RFC7140: LDP Extensions for Hub and Spoke Multipoint		"RFC7140: LDP Extensions for Hub and Spoke Multipoint
	Label Switched Path";		Label Switched Path";
	leaf enable {		leaf enable {
	type boolean;		type boolean;
	skipping to change at page 44, line 47 ¶		skipping to change at page 43, line 52 ¶
	type boolean;		type boolean;
	description		description
	"Merge Point capable for MP LSP node protection.";		"Merge Point capable for MP LSP node protection.";
	} // merge-point		} // merge-point
	} // node-protection		} // node-protection
	}		}
	// IPv4 bindings state		// IPv4 bindings state
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"		+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"
	+ "mldp:ipv4/mldp:state/mldp:roots/mldp:root/mldp:bindings" {		+ "mldp:ipv4/mldp:roots/mldp:root/mldp:bindings" {
	description "Augmentation for MLDP IPv4 bindings.";		description "Augmentation for MLDP IPv4 bindings.";
	container opaque-type-transit {		container opaque-type-transit {
	description		description
	"The type of opaque value element is the transit IPv4		"The type of opaque value element is the transit IPv4
	source.";		source.";
	reference		reference
	"RFC6826: Multipoint LDP In-Band Signaling for		"RFC6826: Multipoint LDP In-Band Signaling for
	Point-to-Multipoint and		Point-to-Multipoint and
	Multipoint-to-Multipoint Label Switched Paths.";		Multipoint-to-Multipoint Label Switched Paths.";
	list fec-label {		list fec-label {
	key		key
	"source-address group-address "		"source-address group-address "
	+ "rd recur-root-address recur-rd";		+ "rd recur-root-address recur-rd";
	description		description
	"List of FEC to label bindings.";		"List of FEC to label bindings.";
	skipping to change at page 45, line 35 ¶		skipping to change at page 44, line 39 ¶
	leaf rd {		leaf rd {
	type route-distinguisher;		type route-distinguisher;
	description		description
	"Route Distinguisher.";		"Route Distinguisher.";
	reference		reference
	"RFC7246: Multipoint Label Distribution		"RFC7246: Multipoint Label Distribution
	Protocol In-Band Signaling in a Virtual		Protocol In-Band Signaling in a Virtual
	Routing and Forwarding (VRF) Table		Routing and Forwarding (VRF) Table
	Context.";		Context.";
	}		}
	leaf recur-root-address {		uses recursive-fec-attibutes;
	type inet:ip-address;
	description
	"Recursive root address.";
	reference
	"RFC6512: Using Multipoint LDP When the
	Backbone Has No Route to the Root";
	}
	leaf recur-rd {
	type route-distinguisher;
	description
	"Route Distinguisher in the VPN-Recursive
	Opaque Value.";
	reference
	"RFC6512: Using Multipoint LDP When the
	Backbone Has No Route to the Root";
	}
	uses mldp-ext-binding-label-state-attributes;		uses mldp-ext-binding-label-state-attributes;
	} // fec-label		} // fec-label
	} // opaque-type-transit		} // opaque-type-transit
	container opaque-type-bidir {		container opaque-type-bidir {
	description		description
	"The type of opaque value element is		"The type of opaque value element is
	the generic LSP identifier";		the generic LSP identifier";
	reference		reference
	"RFC6826: Multipoint LDP In-Band Signaling for		"RFC6826: Multipoint LDP In-Band Signaling for
	Point-to-Multipoint and		Point-to-Multipoint and
	skipping to change at page 46, line 42 ¶		skipping to change at page 45, line 30 ¶
	leaf rd {		leaf rd {
	type route-distinguisher;		type route-distinguisher;
	description		description
	"Route Distinguisher.";		"Route Distinguisher.";
	reference		reference
	"RFC7246: Multipoint Label Distribution		"RFC7246: Multipoint Label Distribution
	Protocol In-Band Signaling in a Virtual		Protocol In-Band Signaling in a Virtual
	Routing and Forwarding (VRF) Table		Routing and Forwarding (VRF) Table
	Context.";		Context.";
	}		}
	leaf recur-root-address {		uses recursive-fec-attibutes;
	type inet:ip-address;
	description
	"Recursive root address.";
	reference
	"RFC6512: Using Multipoint LDP When the
	Backbone Has No Route to the Root";
	}
	leaf recur-rd {
	type route-distinguisher;
	description
	"Route Distinguisher in the VPN-Recursive
	Opaque Value.";
	reference
	"RFC6512: Using Multipoint LDP When the
	Backbone Has No Route to the Root";
	}
	uses mldp-ext-binding-label-state-attributes;		uses mldp-ext-binding-label-state-attributes;
	} // fec-label		} // fec-label
	} // opaque-type-bidir		} // opaque-type-bidir
	}		}
	// IPv6 bindings state		// IPv6 bindings state
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"		+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"
	+ "ipv6/state/roots/root/bindings" {		+ "ipv6/roots/root/bindings" {
	description "Augmentation for MLDP IPv6 bindings.";		description "Augmentation for MLDP IPv6 bindings.";
	container opaque-type-transit {		container opaque-type-transit {
	config false;		config false;
	description		description
	"The type of opaque value element is the transit IPv6		"The type of opaque value element is the transit IPv6
	source.";		source.";
	reference		reference
	"RFC6826: Multipoint LDP In-Band Signaling for		"RFC6826: Multipoint LDP In-Band Signaling for
	Point-to-Multipoint and		Point-to-Multipoint and
	Multipoint-to-Multipoint Label Switched		Multipoint-to-Multipoint Label Switched
	skipping to change at page 48, line 8 ¶		skipping to change at page 46, line 29 ¶
	leaf rd {		leaf rd {
	type route-distinguisher;		type route-distinguisher;
	description		description
	"Route Distinguisher.";		"Route Distinguisher.";
	reference		reference
	"RFC7246: Multipoint Label Distribution		"RFC7246: Multipoint Label Distribution
	Protocol In-Band Signaling in a Virtual		Protocol In-Band Signaling in a Virtual
	Routing and Forwarding (VRF) Table		Routing and Forwarding (VRF) Table
	Context.";		Context.";
	}		}
	leaf recur-root-address {		uses recursive-fec-attibutes;
	type inet:ip-address;
	description
	"Recursive root address.";
	reference
	"RFC6512: Using Multipoint LDP When the
	Backbone Has No Route to the Root";
	}
	leaf recur-rd {
	type route-distinguisher;
	description
	"Route Distinguisher in the VPN-Recursive
	Opaque Value.";
	reference
	"RFC6512: Using Multipoint LDP When the
	Backbone Has No Route to the Root";
	}
	uses mldp-ext-binding-label-state-attributes;		uses mldp-ext-binding-label-state-attributes;
	} // fec-label		} // fec-label
	} // opaque-type-transit		} // opaque-type-transit
	container opaque-type-bidir {		container opaque-type-bidir {
	config false;		config false;
	description		description
	"The type of opaque value element is		"The type of opaque value element is
	the generic LSP identifier";		the generic LSP identifier";
	reference		reference
	skipping to change at page 49, line 16 ¶		skipping to change at page 47, line 21 ¶
	leaf rd {		leaf rd {
	type route-distinguisher;		type route-distinguisher;
	description		description
	"Route Distinguisher.";		"Route Distinguisher.";
	reference		reference
	"RFC7246: Multipoint Label Distribution		"RFC7246: Multipoint Label Distribution
	Protocol In-Band Signaling in a Virtual		Protocol In-Band Signaling in a Virtual
	Routing and Forwarding (VRF) Table		Routing and Forwarding (VRF) Table
	Context.";		Context.";
	}		}
	leaf recur-root-address {		uses recursive-fec-attibutes;
	type inet:ip-address;
	description
	"Recursive root address.";
	reference
	"RFC6512: Using Multipoint LDP When the
	Backbone Has No Route to the Root";
	}
	leaf recur-rd {
	type route-distinguisher;
	description
	"Route Distinguisher in the VPN-Recursive
	Opaque Value.";
	reference
	"RFC6512: Using Multipoint LDP When the
	Backbone Has No Route to the Root";
	}
	uses mldp-ext-binding-label-state-attributes;		uses mldp-ext-binding-label-state-attributes;
	} // fec-label		} // fec-label
	} // opaque-type-bidir		} // opaque-type-bidir
	}		}
	// IPv4 bindings opaque-type-lspid state		// IPv4 bindings opaque-type-lspid state
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"		+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"
	+ "mldp:ipv4/mldp:state/mldp:roots/mldp:root/mldp:bindings/"		+ "mldp:ipv4/mldp:roots/mldp:root/mldp:bindings/"
	+ "mldp:opaque-type-lspid/mldp:fec-label" {		+ "mldp:opaque-type-lspid/mldp:fec-label" {
	description		description
	"Augmentation for MLDP IPv4 bindings with opaque type LSP ID.";		"Augmentation for MLDP IPv4 bindings with opaque type LSP ID.";
	list recursive-fec {		list recursive-fec {
	key		key
	"recur-root-address recur-rd";		"recur-root-address recur-rd";
	description		description
	"List of recursive opaque values.";		"List of recursive opaque values.";
	leaf recur-root-address {		uses recursive-fec-attibutes;
	type inet:ip-address;
	description
	"Recursive root address.";
	reference
	"RFC6512: Using Multipoint LDP When the
	Backbone Has No Route to the Root";
	}
	leaf recur-rd {
	type route-distinguisher;
	description
	"Route Distinguisher in the VPN-Recursive
	Opaque Value.";
	reference
	"RFC6512: Using Multipoint LDP When the
	Backbone Has No Route to the Root";
	}
	uses mldp-ext-binding-label-state-attributes;		uses mldp-ext-binding-label-state-attributes;
	} // fec-label		} // fec-label
	}		}
	// IPv6 bindings opaque-type-lspid state		// IPv6 bindings opaque-type-lspid state
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"		+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"
	+ "ipv6/state/roots/root/bindings/opaque-type-lspid/"		+ "ipv6/roots/root/bindings/opaque-type-lspid/fec-label" {
	+ "fec-label" {
	description		description
	"Augmentation for MLDP IPv6 bindings with opaque type LSP ID.";		"Augmentation for MLDP IPv6 bindings with opaque type LSP ID.";
	list recursive-fec {		list recursive-fec {
	key		key "recur-root-address recur-rd";
	"recur-root-address recur-rd";		config false;
	config false;
	description		description
	"List of recursive opaque values.";		"List of recursive opaque values.";
	leaf recur-root-address {		uses recursive-fec-attibutes;
	type inet:ip-address;
	description
	"Recursive root address.";
	reference
	"RFC6512: Using Multipoint LDP When the
	Backbone Has No Route to the Root";
	}
	leaf recur-rd {
	type route-distinguisher;
	description
	"Route Distinguisher in the VPN-Recursive
	Opaque Value.";
	reference
	"RFC6512: Using Multipoint LDP When the
	Backbone Has No Route to the Root";
	}
	uses mldp-ext-binding-label-state-attributes;		uses mldp-ext-binding-label-state-attributes;
	} // fec-label		} // fec-label
	}		}
	/*		/*
	* Per AF augmentation		* Per AF augmentation
	*/		*/
	// IPv6 augmentation		// IPv6 augmentation
	augment "/rt:routing/rt:control-plane-protocols/"		augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families" {		+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families" {
	description "Augmentation for MLDP IPv6 address family.";		description "Augmentation for MLDP IPv6 address family.";
	container ipv6 {		container ipv6 {
	description		description
	"IPv6 information.";		"IPv6 information.";
	container state {		container roots {
	config false;		config false;
	description		description
	"Operational state data.";		"IPv6 multicast LSP roots.";
			list root {
	container roots {		key "root-address";
	description		description
	"IPv6 multicast LSP roots.";		"List of roots for configured multicast LSPs.";
	list root {
	key "root-address";		leaf root-address {
			type inet:ipv6-address;
	description		description
	"List of roots for configured multicast LSPs.";		"Root address.";
			}
	leaf root-address {		leaf is-self {
			type boolean;
			description
			"This is the root.";
			}
			list reachability {
			key "address interface";
			description
			"A next hop for reachability to root,
			as a RIB view.";
			leaf address {
	type inet:ipv6-address;		type inet:ipv6-address;
	description		description
	"Root address.";		"The next hop address to reach root.";
	}		}
			leaf interface {
	leaf is-self {		type if:interface-ref;
	type boolean;
	description		description
	"This is the root.";		"Interface connecting to next-hop.";
	}		}
			leaf peer {
	list reachability {		type leafref {
	key "address interface";		path
	description		"../../../../../../../../ldp:peers/"
	"A next hop for reachability to root,		+ "ldp:peer/ldp:lsr-id";
	as a RIB view.";
	leaf address {
	type inet:ipv6-address;
	description
	"The next hop address to reach root.";
	}
	leaf interface {
	type ldp:mpls-interface-ref;
	description
	"Interface connecting to next-hop.";
	}
	leaf peer {
	type leafref {
	path
	"../../../../../../../../../ldp:peers/"
	+ "ldp:peer/ldp:lsr-id";
	}
	description
	"LDP peer from which this next hop can be
	reached.";
	}		}
			description
			"LDP peer from which this next hop can be
			reached.";
	}		}
			}
	container bindings {		container bindings {
			description
			"mLDP FEC to label bindings.";
			container opaque-type-lspid {
	description		description
	"mLDP FEC to label bindings.";		"The type of opaque value element is
	container opaque-type-lspid {		the generic LSP identifier";
			reference
			"RFC6388: Label Distribution Protocol
			Extensions for Point-to-Multipoint and
			Multipoint-to-Multipoint Label Switched
			Paths.";
			list fec-label {
			key
			"lsp-id";
	description		description
	"The type of opaque value element is		"List of FEC to label bindings.";
	the generic LSP identifier";		leaf lsp-id {
	reference		type uint32;
	"RFC6388: Label Distribution Protocol		description "ID to identify the LSP.";
	Extensions for Point-to-Multipoint and		}
	Multipoint-to-Multipoint Label Switched		leaf multipoint-type {
	Paths.";		type mldp:multipoint-type;
	list fec-label {
	key
	"lsp-id";
	description		description
	"List of FEC to label bindings.";		"The type of mutipoint, p2mp or mp2mp.";
	leaf lsp-id {		}
	type uint32;
	description "ID to identify the LSP.";		uses mldp-ext-binding-label-state-attributes;
	}		} // fec-label
	uses mldp-ext-binding-label-state-attributes;
	} // fec-label		} // opaque-type-lspid
	} // opaque-type-lspid		} // bindings
	} // bindings		} // list root
	} // list root		} // roots
	} // roots
	} // state
	container configured-leaf-lsps {		container configured-leaf-lsps {
	description		description
	"Configured multicast LSPs.";		"Configured multicast LSPs.";
	container p2mp {		container opaque-type-lspid {
	description		description
	"Configured point-to-multipoint LSPs.";		"The type of opaque value element is
	uses mldp-ipv6-configured-lsp-roots;		the generic LSP identifier";
	}		reference
	container mp2mp {		"RFC6388: Label Distribution Protocol
			Extensions for Point-to-Multipoint and
			Multipoint-to-Multipoint Label Switched
			Paths.";
			list fec-label {
			key
			"root-address lsp-id";
			description
			"List of FEC to label bindings.";
			leaf root-address {
			type inet:ipv6-address;
			description
			"Root address.";
			}
			leaf lsp-id {
			type uint32;
			description "ID to identify the LSP.";
			}
			leaf multipoint-type {
			type mldp:multipoint-type;
			description
			"The type of mutipoint, p2mp or mp2mp.";
			}
			list recursive-fec {
			key
			"recur-root-address recur-rd";
			description
			"List of recursive opaque values.";
			uses recursive-fec-attibutes;
			} // fec-label
			} // fec-label
			} // opaque-type-lspid
			container opaque-type-transit {
	description		description
	"Configured multipoint-to-multipoint LSPs.";		"The type of opaque value element is the transit IPv4
	uses mldp-ipv6-configured-lsp-roots;		source.";
	}		reference
			"RFC6826: Multipoint LDP In-Band Signaling for
			Point-to-Multipoint and
			Multipoint-to-Multipoint Label Switched Paths.";
			list fec-label {
			key
			"root-address source-address group-address "
			+ "rd recur-root-address recur-rd";
			description
			"List of FEC to label bindings.";
			leaf root-address {
			type inet:ipv6-address;
			description
			"Root address.";
			}
			leaf source-address {
			type inet:ip-address;
			description
			"Source address.";
			}
			leaf group-address {
			type inet:ip-address-no-zone;
			description
			"Group address.";
			}
			leaf rd {
			type route-distinguisher;
			description
			"Route Distinguisher.";
			reference
			"RFC7246: Multipoint Label Distribution
			Protocol In-Band Signaling in a Virtual
			Routing and Forwarding (VRF) Table
			Context.";
			}
			uses recursive-fec-attibutes;
			} // fec-label
			} // opaque-type-transit
			container opaque-type-bidir {
			description
			"The type of opaque value element is
			the generic LSP identifier";
			reference
			"RFC6826: Multipoint LDP In-Band Signaling for
			Point-to-Multipoint and
			Multipoint-to-Multipoint Label Switched
			Paths.";
			list fec-label {
			key
			"root-address rp group-address rd recur-root-address "
			+ "recur-rd";
			description
			"List of FEC to label bindings.";
			leaf root-address {
			type inet:ipv6-address;
			description
			"Root address.";
			}
			leaf rp {
			type inet:ip-address;
			description
			"RP address.";
			}
			leaf group-address {
			type inet:ip-address-no-zone;
			description
			"Group address.";
			}
			leaf rd {
			type route-distinguisher;
			description
			"Route Distinguisher.";
			reference
			"RFC7246: Multipoint Label Distribution
			Protocol In-Band Signaling in a Virtual
			Routing and Forwarding (VRF) Table
			Context.";
			}
			uses recursive-fec-attibutes;
			} // fec-label
			} // opaque-type-bidir
	} // configured-leaf-lsps		} // configured-leaf-lsps
	} // ipv6		} // ipv6
	}		}
	/*		/*
	* Global augmentation		* Global augmentation
	*/		*/
	/*		/*
	* Notifications		* Notifications
	*/		*/
	augment "/mldp:mpls-mldp-fec-event/mldp:lsp-key-type" {
	description "";		augment "/mldp:mpls-mldp-fec-event/mldp:opaque-type/"
	case source-group-based {		+ "mldp:opaque-type-lspid/mldp:opaque-type-lspid" {
	leaf source-address {		description
	type inet:ip-address;		"Augmentation for MLDP notification for opaque-type-lspid.";
			container recursive-fec {
			description
			"Container of recursive opaque values.";
			uses recursive-fec-attibutes;
			} // fec-label
			}
			augment "/mldp:mpls-mldp-fec-event/mldp:opaque-type" {
			description
			"Augmentation for MLDP notification.";
			case opaque-type-transit {
			container opaque-type-transit {
	description		description
	"LSP source address.";		"The type of opaque value element is the transit IPv4
	}		source.";
	leaf group-address {		reference
	type inet:ip-address;		"RFC6826: Multipoint LDP In-Band Signaling for
			Point-to-Multipoint and
			Multipoint-to-Multipoint Label Switched Paths.";
			leaf root-address {
			type inet:ip-address;
			description
			"Root address.";
			}
			leaf source-address {
			type inet:ip-address;
			description
			"Source address.";
			}
			leaf group-address {
			type inet:ip-address-no-zone;
			description
			"Group address.";
			}
			leaf rd {
			type route-distinguisher;
			description
			"Route Distinguisher.";
			reference
			"RFC7246: Multipoint Label Distribution
			Protocol In-Band Signaling in a Virtual
			Routing and Forwarding (VRF) Table
			Context.";
			}
			uses recursive-fec-attibutes;
			} // opaque-type-transit
			} // opaque-type-transit
			case opaque-type-bidir {
			container opaque-type-bidir {
	description		description
	"Multicast group address.";		"The type of opaque value element is
	}		the generic LSP identifier";
	} // case source-group		reference
			"RFC6826: Multipoint LDP In-Band Signaling for
			Point-to-Multipoint and
			Multipoint-to-Multipoint Label Switched
			Paths.";
			leaf root-address {
			type inet:ip-address;
			description
			"Root address.";
			}
			leaf rp {
			type inet:ip-address;
			description
			"RP address.";
			}
			leaf group-address {
			type inet:ip-address-no-zone;
			description
			"Group address.";
			}
			leaf rd {
			type route-distinguisher;
			description
			"Route Distinguisher.";
			reference
			"RFC7246: Multipoint Label Distribution
			Protocol In-Band Signaling in a Virtual
			Routing and Forwarding (VRF) Table
			Context.";
			}
			uses recursive-fec-attibutes;
			} // opaque-type-bidir
			} // opaque-type-bidir
	}		}
	}		}
	<CODE ENDS>		<CODE ENDS>
	Figure 15		Figure 15
	10. Security Considerations		10. Security Considerations
	This mLDP model shares the same security considerations as captured		This mLDP model shares the same security considerations as captured
	in LDP Yang model [I-D.ietf-mpls-ldp-yang].		in LDP Yang model [I-D.ietf-mpls-ldp-yang].
	11. IANA Considerations		11. IANA Considerations
	This document does not extend mLDP protocol specifiction and hence		This document does not extend mLDP protocol specifiction and hence
	skipping to change at page 54, line 23 ¶		skipping to change at page 55, line 24 ¶
	there are no IANA considerations.		there are no IANA considerations.
	Note to the RFC Editor: Please remove IANA section before the		Note to the RFC Editor: Please remove IANA section before the
	publication.		publication.
	12. Acknowledgments		12. Acknowledgments
	The authors would like to acknowledge Ladislav Lhotka for his useful		The authors would like to acknowledge Ladislav Lhotka for his useful
	comments as the YANG Doctor.		comments as the YANG Doctor.
	13. References		13. Normative References
	13.1. Normative References
	[I-D.ietf-mpls-ldp-yang]		[I-D.ietf-mpls-ldp-yang]
	Raza, K., Asati, R., Liu, X., Esale, S., Chen, X., and H.		Raza, K., Asati, R., Liu, X., Esale, S., Chen, X., and H.
	Shah, "YANG Data Model for MPLS LDP", draft-ietf-mpls-ldp-		Shah, "YANG Data Model for MPLS LDP", draft-ietf-mpls-ldp-
	yang-02 (work in progress), September 2017.		yang-02 (work in progress), September 2017.
			[I-D.ietf-netmod-revised-datastores]
			Bjorklund, M., Schoenwaelder, J., Shafer, P., Watsen, K.,
			and R. Wilton, "Network Management Datastore
			Architecture", draft-ietf-netmod-revised-datastores-06
			(work in progress), October 2017.
			[I-D.ietf-netmod-rfc6087bis]
			Bierman, A., "Guidelines for Authors and Reviewers of YANG
			Data Model Documents", draft-ietf-netmod-rfc6087bis-14
			(work in progress), September 2017.
	[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate		[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
	Requirement Levels", BCP 14, RFC 2119,		Requirement Levels", BCP 14, RFC 2119,
	DOI 10.17487/RFC2119, March 1997,		DOI 10.17487/RFC2119, March 1997,
	<http://www.rfc-editor.org/info/rfc2119>.		<https://www.rfc-editor.org/info/rfc2119>.
	[RFC5036] Andersson, L., Ed., Minei, I., Ed., and B. Thomas, Ed.,
	"LDP Specification", RFC 5036, DOI 10.17487/RFC5036,
	October 2007, <http://www.rfc-editor.org/info/rfc5036>.
	[RFC5561] Thomas, B., Raza, K., Aggarwal, S., Aggarwal, R., and JL.
	Le Roux, "LDP Capabilities", RFC 5561,
	DOI 10.17487/RFC5561, July 2009,
	<http://www.rfc-editor.org/info/rfc5561>.
	[RFC6020] Bjorklund, M., Ed., "YANG - A Data Modeling Language for
	the Network Configuration Protocol (NETCONF)", RFC 6020,
	DOI 10.17487/RFC6020, October 2010,
	<http://www.rfc-editor.org/info/rfc6020>.
	[RFC6241] Enns, R., Ed., Bjorklund, M., Ed., Schoenwaelder, J., Ed.,
	and A. Bierman, Ed., "Network Configuration Protocol
	(NETCONF)", RFC 6241, DOI 10.17487/RFC6241, June 2011,
	<http://www.rfc-editor.org/info/rfc6241>.
	[RFC6388] Wijnands, IJ., Ed., Minei, I., Ed., Kompella, K., and B.		[RFC6388] Wijnands, IJ., Ed., Minei, I., Ed., Kompella, K., and B.
	Thomas, "Label Distribution Protocol Extensions for Point-		Thomas, "Label Distribution Protocol Extensions for Point-
	to-Multipoint and Multipoint-to-Multipoint Label Switched		to-Multipoint and Multipoint-to-Multipoint Label Switched
	Paths", RFC 6388, DOI 10.17487/RFC6388, November 2011,		Paths", RFC 6388, DOI 10.17487/RFC6388, November 2011,
	<http://www.rfc-editor.org/info/rfc6388>.		<https://www.rfc-editor.org/info/rfc6388>.
	[RFC6389] Aggarwal, R. and JL. Le Roux, "MPLS Upstream Label		[RFC6389] Aggarwal, R. and JL. Le Roux, "MPLS Upstream Label
	Assignment for LDP", RFC 6389, DOI 10.17487/RFC6389,		Assignment for LDP", RFC 6389, DOI 10.17487/RFC6389,
	November 2011, <http://www.rfc-editor.org/info/rfc6389>.		November 2011, <https://www.rfc-editor.org/info/rfc6389>.
	[RFC6512] Wijnands, IJ., Rosen, E., Napierala, M., and N. Leymann,		[RFC6512] Wijnands, IJ., Rosen, E., Napierala, M., and N. Leymann,
	"Using Multipoint LDP When the Backbone Has No Route to		"Using Multipoint LDP When the Backbone Has No Route to
	the Root", RFC 6512, DOI 10.17487/RFC6512, February 2012,		the Root", RFC 6512, DOI 10.17487/RFC6512, February 2012,
	<http://www.rfc-editor.org/info/rfc6512>.		<https://www.rfc-editor.org/info/rfc6512>.
	[RFC6536] Bierman, A. and M. Bjorklund, "Network Configuration
	Protocol (NETCONF) Access Control Model", RFC 6536,
	DOI 10.17487/RFC6536, March 2012,
	<http://www.rfc-editor.org/info/rfc6536>.
	[RFC6826] Wijnands, IJ., Ed., Eckert, T., Leymann, N., and M.		[RFC6826] Wijnands, IJ., Ed., Eckert, T., Leymann, N., and M.
	Napierala, "Multipoint LDP In-Band Signaling for Point-to-		Napierala, "Multipoint LDP In-Band Signaling for Point-to-
	Multipoint and Multipoint-to-Multipoint Label Switched		Multipoint and Multipoint-to-Multipoint Label Switched
	Paths", RFC 6826, DOI 10.17487/RFC6826, January 2013,		Paths", RFC 6826, DOI 10.17487/RFC6826, January 2013,
	<http://www.rfc-editor.org/info/rfc6826>.		<https://www.rfc-editor.org/info/rfc6826>.
	[RFC7060] Napierala, M., Rosen, E., and IJ. Wijnands, "Using LDP		[RFC7060] Napierala, M., Rosen, E., and IJ. Wijnands, "Using LDP
	Multipoint Extensions on Targeted LDP Sessions", RFC 7060,		Multipoint Extensions on Targeted LDP Sessions", RFC 7060,
	DOI 10.17487/RFC7060, November 2013,		DOI 10.17487/RFC7060, November 2013,
	<http://www.rfc-editor.org/info/rfc7060>.		<https://www.rfc-editor.org/info/rfc7060>.
	[RFC7140] Jin, L., Jounay, F., Wijnands, IJ., and N. Leymann, "LDP		[RFC7140] Jin, L., Jounay, F., Wijnands, IJ., and N. Leymann, "LDP
	Extensions for Hub and Spoke Multipoint Label Switched		Extensions for Hub and Spoke Multipoint Label Switched
	Path", RFC 7140, DOI 10.17487/RFC7140, March 2014,		Path", RFC 7140, DOI 10.17487/RFC7140, March 2014,
	<http://www.rfc-editor.org/info/rfc7140>.		<https://www.rfc-editor.org/info/rfc7140>.
	[RFC7246] Wijnands, IJ., Ed., Hitchen, P., Leymann, N., Henderickx,		[RFC7246] Wijnands, IJ., Ed., Hitchen, P., Leymann, N., Henderickx,
	W., Gulko, A., and J. Tantsura, "Multipoint Label		W., Gulko, A., and J. Tantsura, "Multipoint Label
	Distribution Protocol In-Band Signaling in a Virtual		Distribution Protocol In-Band Signaling in a Virtual
	Routing and Forwarding (VRF) Table Context", RFC 7246,		Routing and Forwarding (VRF) Table Context", RFC 7246,
	DOI 10.17487/RFC7246, June 2014,		DOI 10.17487/RFC7246, June 2014,
	<http://www.rfc-editor.org/info/rfc7246>.		<https://www.rfc-editor.org/info/rfc7246>.
	[RFC7438] Wijnands, IJ., Ed., Rosen, E., Gulko, A., Joorde, U., and		[RFC7438] Wijnands, IJ., Ed., Rosen, E., Gulko, A., Joorde, U., and
	J. Tantsura, "Multipoint LDP (mLDP) In-Band Signaling with		J. Tantsura, "Multipoint LDP (mLDP) In-Band Signaling with
	Wildcards", RFC 7438, DOI 10.17487/RFC7438, January 2015,		Wildcards", RFC 7438, DOI 10.17487/RFC7438, January 2015,
	<http://www.rfc-editor.org/info/rfc7438>.		<https://www.rfc-editor.org/info/rfc7438>.
	[RFC7715] Wijnands, IJ., Ed., Raza, K., Atlas, A., Tantsura, J., and		[RFC7715] Wijnands, IJ., Ed., Raza, K., Atlas, A., Tantsura, J., and
	Q. Zhao, "Multipoint LDP (mLDP) Node Protection",		Q. Zhao, "Multipoint LDP (mLDP) Node Protection",
	RFC 7715, DOI 10.17487/RFC7715, January 2016,		RFC 7715, DOI 10.17487/RFC7715, January 2016,
	<http://www.rfc-editor.org/info/rfc7715>.		<https://www.rfc-editor.org/info/rfc7715>.
	13.2. Informative References
	[I-D.ietf-rtgwg-policy-model]
	Shaikh, A., Shakir, R., D'Souza, K., and C. Chase,
	"Routing Policy Configuration Model for Service Provider
	Networks", draft-ietf-rtgwg-policy-model-01 (work in
	progress), April 2016.
	[I-D.iwijnand-mpls-mldp-multi-topology]
	Wijnands, I. and K. Raza, "mLDP Extensions for Multi
	Topology Routing", draft-iwijnand-mpls-mldp-multi-
	topology-03 (work in progress), June 2013.
	[I-D.openconfig-netmod-opstate]
	Shakir, R., Shaikh, A., and M. Hines, "Consistent Modeling
	of Operational State Data in YANG", draft-openconfig-
	netmod-opstate-01 (work in progress), July 2015.
	Appendix A. Additional Contributors		Appendix A. Additional Contributors
	Matthew Bocci		Matthew Bocci
	Nokia		Nokia
	matthew.bocci@nokia.com		matthew.bocci@nokia.com
	Authors' Addresses		Authors' Addresses
	Kamran Raza		Kamran Raza
End of changes. 158 change blocks.
	953 lines changed or deleted		987 lines changed or added
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