draft-ietf-i2rs-yang-dc-fabric-network-topology-01.txt		draft-ietf-i2rs-yang-dc-fabric-network-topology-02.txt
	I2RS Working Group Y. Zhuang		I2RS Working Group Y. Zhuang
	Internet-Draft D. Shi		Internet-Draft D. Shi
	Intended status: Standards Track Huawei		Intended status: Standards Track Huawei
	Expires: May 26, 2018 R. Gu		Expires: June 2, 2018 R. Gu
	China Mobile		China Mobile
	H. Ananthakrishnan		H. Ananthakrishnan
	Packet Design		Packet Design
	November 22, 2017		November 29, 2017
	A YANG Data Model for Fabric Topology in Data Center Network		A YANG Data Model for Fabric Topology in Data Center Network
	draft-ietf-i2rs-yang-dc-fabric-network-topology-01		draft-ietf-i2rs-yang-dc-fabric-network-topology-02
	Abstract		Abstract
	This document defines a YANG data model for fabric topology in Data		This document defines a YANG data model for fabric topology in Data
	Center Network.		Center Network.
	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.
	skipping to change at page 1, line 35 ¶		skipping to change at page 1, line 35 ¶
	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 https://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 May 26, 2018.		This Internet-Draft will expire on June 2, 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.
	This document is subject to BCP 78 and the IETF Trust's Legal		This document is subject to BCP 78 and the IETF Trust's Legal
	Provisions Relating to IETF Documents		Provisions Relating to IETF Documents
	(https://trustee.ietf.org/license-info) in effect on the date of		(https://trustee.ietf.org/license-info) in effect on the date of
	publication of this document. Please review these documents		publication of this document. Please review these documents
	skipping to change at page 2, line 20 ¶		skipping to change at page 2, line 20 ¶
	2. Definitions an Acronyms . . . . . . . . . . . . . . . . . . . 3		2. Definitions an Acronyms . . . . . . . . . . . . . . . . . . . 3
	2.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3		2.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
	2.2. Tree diagram . . . . . . . . . . . . . . . . . . . . . . 4		2.2. Tree diagram . . . . . . . . . . . . . . . . . . . . . . 4
	3. Model Overview . . . . . . . . . . . . . . . . . . . . . . . 4		3. Model Overview . . . . . . . . . . . . . . . . . . . . . . . 4
	3.1. Topology Model structure . . . . . . . . . . . . . . . . 4		3.1. Topology Model structure . . . . . . . . . . . . . . . . 4
	3.2. Fabric Topology Model . . . . . . . . . . . . . . . . . . 5		3.2. Fabric Topology Model . . . . . . . . . . . . . . . . . . 5
	3.2.1. Fabric Topology . . . . . . . . . . . . . . . . . . . 5		3.2.1. Fabric Topology . . . . . . . . . . . . . . . . . . . 5
	3.2.2. Fabric node extension . . . . . . . . . . . . . . . . 6		3.2.2. Fabric node extension . . . . . . . . . . . . . . . . 6
	3.2.3. Fabric termination-point extension . . . . . . . . . 7		3.2.3. Fabric termination-point extension . . . . . . . . . 7
	4. Fabric YANG Module . . . . . . . . . . . . . . . . . . . . . 8		4. Fabric YANG Module . . . . . . . . . . . . . . . . . . . . . 8
	5. Security Consideration . . . . . . . . . . . . . . . . . . . 21		5. Security Consideration . . . . . . . . . . . . . . . . . . . 22
	6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 21		6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 22
	7. References . . . . . . . . . . . . . . . . . . . . . . . . . 22		7. References . . . . . . . . . . . . . . . . . . . . . . . . . 22
	7.1. Normative References . . . . . . . . . . . . . . . . . . 22		7.1. Normative References . . . . . . . . . . . . . . . . . . 22
	7.2. Informative References . . . . . . . . . . . . . . . . . 22		7.2. Informative References . . . . . . . . . . . . . . . . . 23
	Appendix A. Non NMDA -state modules . . . . . . . . . . . . . . 22		Appendix A. Non NMDA -state modules . . . . . . . . . . . . . . 23
	Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 28		Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 28
	1. Introduction		1. Introduction
	Normally, a data center network is composed of single or multiple		Normally, a data center network is composed of single or multiple
	fabrics which are also known as PODs (a Point Of Delivery). These		fabrics which are also known as PODs (a Point Of Delivery). These
	fabrics may be heterogeneous due to implementation of different		fabrics may be heterogeneous due to implementation of different
	technologies while DC network upgrading or enrolling new techniques		technologies while DC network upgrading or enrolling new techniques
	and features. For example, Fabric A may use VXLAN while Fabric B may		and features. For example, Fabric A may use VXLAN while Fabric B may
	use VLAN within a DC network. Likewise, a legacy Fabric may use		use VLAN within a DC network. Likewise, a legacy Fabric may use
	skipping to change at page 6, line 9 ¶		skipping to change at page 6, line 9 ¶
	In the fabric topology module, a fabric is modeled as a node in the		In the fabric topology module, a fabric is modeled as a node in the
	network, while the fabric-based Data center network consists of a set		network, while the fabric-based Data center network consists of a set
	of fabric nodes and their connections known as "fabric port". The		of fabric nodes and their connections known as "fabric port". The
	following is the snatch of the definition to show the main structure		following is the snatch of the definition to show the main structure
	of the model:		of the model:
	module: ietf-fabric-topology		module: ietf-fabric-topology
	augment /nw:networks/nw:network/nw:network-types:		augment /nw:networks/nw:network/nw:network-types:
	+--rw fabric-network!		+--rw fabric-network!
	augment /nw:networks/nw:network/nw:node:		augment /nw:networks/nw:network/nw:node:
	+--rw fabric-attribute		+--rw fabric-attributes
			+--rw fabric-id? fabric-id
	+--rw name? string		+--rw name? string
	+--rw type? fabrictype:underlayer-network-type		+--rw type? fabrictype:underlay-network-type
	+--rw description? string		+--rw description? string
	+--rw options		+--rw options
	+--...		+--...
	augment /nw:networks/nw:network/nw:node/nt:termination-point:		augment /nw:networks/nw:network/nw:node/nt:termination-point:
	+--ro fport-attribute		+--ro fport-attributes
	+--ro name? string		+--ro name? string
	+--ro role? fabric-port-role		+--ro role? fabric-port-role
	+--ro type? fabric-port-type		+--ro type? fabric-port-type
	The fabric topology module augments the generic ietf-network and		The fabric topology module augments the generic ietf-network and
	ietf-network-topology modules as follows:		ietf-network-topology modules as follows:
	o A new topology type "ietf-fabric-topology" is introduced and added		o A new topology type "ietf-fabric-topology" is introduced and added
	under the "network-types" container of the ietf-network module.		under the "network-types" container of the ietf-network module.
	o Fabric is defined as a node under the network/node container. A		o Fabric is defined as a node under the network/node container. A
	new container of "fabric-attribute" is defined to carry attributes		new container of "fabric-attributes" is defined to carry
	for a fabric network such as gateway mode, fabric types, involved		attributes for a fabric network such as gateway mode, fabric
	device nodes and links etc al.		types, involved device nodes and links etc al.
	o Termination points (in network topology module) are augmented with		o Termination points (in network topology module) are augmented with
	fabric port attributes defined in a container. The "termination-		fabric port attributes defined in a container. The "termination-
	point" here can represent the "port" of a fabric that provides		point" here can represent the "port" of a fabric that provides
	connections to other nodes, such as device internally, another		connections to other nodes, such as device internally, another
	fabric externally and also end hosts.		fabric externally and also end hosts.
	Details of fabric node and fabric termination point extension will be		Details of fabric node and fabric termination point extension will be
	explained in the following sections.		explained in the following sections.
	3.2.2. Fabric node extension		3.2.2. Fabric node extension
	As a network, a fabric itself is composed of set of network elements		As a network, a fabric itself is composed of set of network elements
	i.e. devices, and related links. As stated previously, the		i.e. devices, and related links. As stated previously, the
	configuration of a fabric is contained under the "fabric-attribute"		configuration of a fabric is contained under the "fabric-attributes"
	container depicted as follows:		container depicted as follows:
	+--rw fabric-attribute		+--rw fabric-attributes
	+--rw fabric-id? fabric-id		+--rw fabric-id? fabric-id
	+--rw name? string		+--rw name? string
	+--rw type? fabrictype:underlayer-network-type		+--rw type? fabrictype:underlay-network-type
	+--rw vni-capacity		+--rw vni-capacity
	| +--rw min? int32		| +--rw min? int32
	| +--rw max? int32		| +--rw max? int32
	+--rw description? string		+--rw description? string
	+--rw options		+--rw options
	| +--rw gateway-mode? enumeration		| +--rw gateway-mode? enumeration
	| +--rw traffic-behavior? enumeration		| +--rw traffic-behavior? enumeration
	| +--rw capability-supported* fabrictype:service-capabilities		| +--rw capability-supported* fabrictype:service-capabilities
	+--rw device-nodes* [device-ref]		+--rw device-nodes* [device-ref]
	| +--rw device-ref fabrictype:node-ref		| +--rw device-ref fabrictype:node-ref
	| +--rw role? fabrictype:device-role		| +--rw role? fabrictype:device-role
	+--rw device-links* [link-ref]		+--rw device-links* [link-ref]
	| +--rw link-ref fabrictype:link-ref		| +--rw link-ref fabrictype:link-ref
	+--rw device-ports* [port-ref]		+--rw device-ports* [port-ref]
	+--rw port-ref fabrictype:tp-ref		+--rw port-ref fabrictype:tp-ref
	+--rw port-type? enumeration		+--rw port-type? identityref
	+--rw bandwith? Enumeration		+--rw bandwidth? identityref
	As in the module, additional data objects for nodes are introduced by		As in the module, additional data objects for nodes are introduced by
	augmenting the "node" list of the network module. New objects		augmenting the "node" list of the network module. New objects
	include fabric name, type of the fabric, descriptions of the fabric		include fabric name, type of the fabric, descriptions of the fabric
	as well as a set of options defined in an "options" container. The		as well as a set of options defined in an "options" container. The
	options container includes type of the gateway-mode (centralized or		options container includes type of the gateway-mode (centralized or
	distributed) and traffic-behavior (whether acl needed for the		distributed) and traffic-behavior (whether acl needed for the
	traffic).		traffic).
	Also, it defines a list of device-nodes and related links as		Also, it defines a list of device-nodes and related links as
	supporting-nodes to form a fabric network. These device nodes and		supporting-nodes to form a fabric network. These device nodes and
	links are leaf-ref of existing nodes and links in the physical		links are leaf-ref of existing nodes and links in the underlay
	topology. For the device-node, the "role" object is defined to		topology. For the device-node, the "role" object is defined to
	represents the role of the device within the fabric, such as "SPINE"		represents the role of the device within the fabric, such as "SPINE"
	or "LEAF", which should work together with gateway-mode.		or "LEAF", which should work together with gateway-mode.
	3.2.3. Fabric termination-point extension		3.2.3. Fabric termination-point extension
	Since the fabric is considered as a node, in this concept,		Since the fabric can be considered as a node, in this concept,
	"termination-points" can represent "ports" of a fabric that connects		"termination-points" can represent "ports" of a fabric that connects
	to other fabrics or end hosts, besides representing ports that		to other fabrics or end hosts, besides representing ports that
	connect devices inside the fabric itself.		connect devices inside the fabric itself.
	As such, the "termination-point" in the fabric topology has three		As such, the "termination-point" in the fabric topology has three
	roles, including internal TP that connects to devices within a		roles, that are internal TP that connects to devices within a fabric,
	fabric, external TP that connects to outside network, as well as		external TP that connects to outside network, and access TP to end
	access TP to end hosts.		hosts.
	A set of "termination-point" indicates all connections of a fabric		The set of "termination-point" of a fabric indicates all connections
	including its internal connections, interconnections with other		of the fabric, including its internal connections, interconnections
	fabrics and also connections to end hosts for a DC network.		with other fabrics and also connections to end hosts for a DC
			network.
	The structure of fabric ports is as follows:		The structure of fabric ports is as follows:
	augment /nw:networks/nw:network/nw:node/nt:termination-point:		augment /nw:networks/nw:network/nw:node/nt:termination-point:
	+--ro fport-attribute		+--ro fport-attributes
	+--ro name? string		+--ro name? string
	+--ro role? fabric-port-role		+--ro role? fabric-port-role
	+--ro type? fabric-port-type		+--ro type? fabric-port-type
	+--ro device-port? tp-ref		+--ro device-port? tp-ref
	+--ro (tunnel-option)?		+--ro (tunnel-option)?
	+--:(gre)		+--:(gre)
	+--ro src-ip? inet:ip-prefix		+--ro src-ip? inet:ip-prefix
	+--ro dest-ip? inet:ip-address		+--ro dest-ip? inet:ip-address
	It augments the termination points (in network topology module) with		It augments the termination points (in network topology module) with
	fabric port attributes defined in a container.		fabric port attributes defined in a container.
	New nodes are defined for fabric ports which include name, role of		New nodes are defined for fabric ports which include name, role of
	the port within the fabric (internal port, external port to outside		the port within the fabric (internal port, external port to outside
	network, access port to end hosts), port type (l2 interface, l3		network, access port to end hosts), port type (l2 interface, l3
	interface etc al). By using the device-port defined as a tp-ref,		interface etc al). By defining the device-port as a tp-ref, a fabric
	this fabric port can be mapped to a device node in the underlay		port can be mapped to a device node in the underlay network.
	network.
	Also, a new container for tunnel-options is introduced as well to		Also, a new container for tunnel-options is introduced to present the
	present the tunnel configuration on the port.		tunnel configuration on the port.
	The terminiation points information are all learnt from the underlay		The terminiation points information are all learnt from the underlay
	networks but not configured by the fabric topology layer.		networks but not configured by the fabric topology layer.
	4. Fabric YANG Module		4. Fabric YANG Module
	<CODE BEGINS> file "ietf-fabric-types@2016-09-29.yang"		<CODE BEGINS> file "ietf-fabric-types@2017-11-29.yang"
	module ietf-fabric-types {		module ietf-fabric-types {
	yang-version 1.1;		yang-version 1.1;
	namespace "urn:ietf:params:xml:ns:yang:ietf-fabric-types";		namespace "urn:ietf:params:xml:ns:yang:ietf-fabric-types";
	prefix fabrictypes;		prefix fabrictypes;
	import ietf-inet-types { prefix "inet"; revision-date "2013-07-15"; }		import ietf-inet-types { prefix "inet"; revision-date "2013-07-15"; }
	import ietf-network-topology { prefix nt; }		import ietf-network-topology { prefix nt;}
	organization		organization
	"IETF I2RS (Interface to the Routing System) Working Group";		"IETF I2RS (Interface to the Routing System) Working Group";
	contact		contact
	"WG Web: <http://tools.ietf.org/wg/i2rs/ >		"WG Web: <http://tools.ietf.org/wg/i2rs/ >
	WG List: <mailto:i2rs@ietf.org>		WG List: <mailto:i2rs@ietf.org>
	WG Chair: Susan Hares		WG Chair: Susan Hares
	<mailto:shares@ndzh.com>		<mailto:shares@ndzh.com>
	WG Chair: Russ White		WG Chair: Russ White
	<mailto:russ@riw.us>		<mailto:russ@riw.us>
	Editor: Yan Zhuang		Editor: Yan Zhuang
	<mailto:zhuangyan.zhuang@huawei.com>		<mailto:zhuangyan.zhuang@huawei.com>
	Editor: Danian Shi		Editor: Danian Shi
	<mailto:shidanian@huawei.com>";		<mailto:shidanian@huawei.com>";
	description		description
	"This module contains a collection of YANG definitions for Fabric.";		"This module contains a collection of YANG definitions for Fabric.
			Copyright (c) 2016 IETF Trust and the persons identified as
			authors of the code. All rights reserved.
			Redistribution and use in source and binary forms, with or
			without modification, is permitted pursuant to, and subject
			to the license terms contained in, the Simplified BSD License
			set forth in Section 4.c of the IETF Trust's Legal Provisions
			Relating to IETF Documents(http://trustee.ietf.org/license-info).
			This version of this YANG module is part of
			draft-zhuang-i2rs-yang-dc-fabric-network-topology;
			see the RFC itself for full legal notices.";
			revision "2017-11-29"{
			description
			"add identities for bandwidth and port-type";
			reference
			"draft-ietf-i2rs-yang-dc-fabric-network-topology-02";
			}
	revision "2016-09-29" {		revision "2016-09-29" {
	description		description
	"Initial revision of faas.";		"Initial revision of faas.";
	reference		reference
	"draft-zhuang-i2rs-yang-dc-fabric-network-topology-02";		"draft-zhuang-i2rs-yang-dc-fabric-network-topology-02";
	}		}
	identity fabric-type {		identity fabric-type {
	description		description
	"base type for fabric networks";		"base type for fabric networks";
	}		}
	identity vxlan-fabric {		identity vxlan-fabric {
	base fabric-type;		base fabric-type;
	description		description
	"vxlan fabric";		"vxlan fabric";
	}		}
	identity vlan-fabric {		identity vlan-fabric {
	base fabric-type;		base fabric-type;
	description		description
	"vlan fabric";		"vlan fabric";
			}
			identity port-type {
			description
			"base type for fabric port";
			}
			identity eth {
			base port-type;
			description "ETH";
			}
			identity serial {
			base port-type;
			description "Serial";
			}
			identity bandwidth {
			description "base for bandwidth";
			}
			identity bw-1M {
			base bandwidth;
			description "1M";
			}
			identity bw-10M {
			base bandwidth;
			description "10M";
			}
			identity bw-100M {
			base bandwidth;
			description "100M";
			}
			identity bw-1G {
			base bandwidth;
			description "1G";
	}		}
			identity bw-10G {
			base bandwidth;
			description "10G";
			}
			identity bw-40G {
			base bandwidth;
			description "40G";
			}
			identity bw-100G{
			base bandwidth;
			description "100G";
			}
	typedef service-capabilities {		typedef service-capabilities {
	type enumeration {		type enumeration {
	enum ip-mapping {		enum ip-mapping {
	description "NAT";		description "NAT";
	}
	enum acl-redirect{
	description "acl redirect, which can provide SFC function";
	}
	enum dynamic-route-exchange{
	description "dynamic route exchange";
	}
	}		}
	description		enum acl-redirect{
	"capability of the device";		description "acl redirect, which can provide SFC function";
			}
			enum dynamic-route-exchange{
			description "dynamic route exchange";
			}
			}
			description
			"capability of the device";
	}		}
	/*		/*
	* Typedefs		* Typedefs
	*/		*/
	typedef node-ref {		typedef node-ref {
	type instance-identifier;		type instance-identifier;
	description "A reference to a node in topology";		description "A reference to a node in topology";
	}		}
	typedef tp-ref {		typedef tp-ref {
	type instance-identifier;		type instance-identifier;
	description "A reference to a termination point in topology";		description "A reference to a termination point in topology";
	}		}
	typedef link-ref {		typedef link-ref {
	type instance-identifier;		type instance-identifier;
	description "A reference to a link in topology";		description "A reference to a link in topology";
	}		}
	typedef device-role {		typedef device-role {
	type enumeration {		type enumeration {
	enum SPINE {		enum SPINE {
	description "a spine node";		description "a spine node";
	}
	enum LEAF {
	description "a leaf node";
	}
	enum BORDER {
	description "a border node";
	}
	}		}
	default "LEAF";		enum LEAF {
	description "device role type";		description "a leaf node";
			}
			enum BORDER {
			description "a border node";
			}
			}
			default "LEAF";
			description "device role type";
	}		}
	typedef fabric-port-role {		typedef fabric-port-role {
	type enumeration {		type enumeration {
	enum internal {		enum internal {
	description "the port used for devices to access each other.";		description "the port used for devices to access each other.";
	}
	enum external {
	description "the port used for fabric to access outside network.";
	}
	enum access {
	description "the port used for Endpoint to access fabric.";
	}
	enum reserved {
	description " not decided yet. ";
	}
	}		}
	description "the role of the physical port ";		enum external {
			description "the port used for fabric to access outside network.";
			}
			enum access {
			description "the port used for Endpoint to access fabric.";
			}
			enum reserved {
			description " not decided yet. ";
			}
			}
			description "the role of the physical port ";
	}		}
	typedef fabric-port-type {		typedef fabric-port-type {
	type enumeration {		type enumeration {
	enum layer2interface {		enum layer2interface {
	description "l2 if";		description "l2 if";
	}
	enum layer3interface {
	description "l3 if";
	}
	enum layer2Tunnel {
	description "l2 tunnel";
	}
	enum layer3Tunnel {
	description "l3 tunnel";
	}
	}		}
	description		enum layer3interface {
	"fabric port type";		description "l3 if";
	}
	typedef underlayer-network-type {
	type enumeration {
	enum VXLAN {
	description "vxlan";
	}
	enum TRILL {
	description "trill";
	}
	enum VLAN {
	description "vlan";
	}
	}		}
	description "";		enum layer2Tunnel {
	}		description "l2 tunnel";
	typedef layer2-protocol-type-enum {
	type enumeration {
	enum VLAN{
	description "vlan";
	}
	enum VXLAN{
	description "vxlan";
	}
	enum TRILL{
	description "trill";
	}
	enum NvGRE{
	description "nvgre";
	}
	}		}
	description "";		enum layer3Tunnel {
	}		description "l3 tunnel";
	typedef access-type {
	type enumeration {
	enum exclusive{
	description "exclusive";
	}
	enum vlan{
	description "vlan";
	}
	}		}
	description "";		}
			description
			"fabric port type";
	}		}
	grouping fabric-port {		typedef underlay-network-type {
	description		type enumeration {
	"attributes of a fabric port";		enum VXLAN {
	leaf name {		description "vxlan";
	type string;
	description "name of the port";
	}
	leaf role {
	type fabric-port-role;
	description "role of the port in a fabric";
	}		}
	leaf type {		enum TRILL {
	type fabric-port-type;		description "trill";
	description "type of the port";
	}		}
	leaf device-port {		enum VLAN {
	type tp-ref;		description "vlan";
	description "the device port it mapped to";
	}		}
	choice tunnel-option {		}
	description "tunnel options";		description "underlay network type";
			}
	case gre {		grouping fabric-port {
	leaf src-ip {		description
	type inet:ip-prefix;		"attributes of a fabric port";
	description "source address";		leaf name {
	}		type string;
	leaf dest-ip {		description "name of the port";
	type inet:ip-address;		}
	description "destination address";		leaf role {
	}		type fabric-port-role;
	}		description "role of the port in a fabric";
			}
			leaf type {
			type fabric-port-type;
			description "type of the port";
			}
			leaf device-port {
			type tp-ref;
			description "the device port it mapped to";
			}
			choice tunnel-option {
			description "tunnel options";
			case gre {
			leaf src-ip {
			type inet:ip-prefix;
			description "source address";
			}
			leaf dest-ip {
			type inet:ip-address;
			description "destination address";
			}
	}		}
			}
	}		}
	grouping route-group {		grouping route-group {
	description		description
	"route attributes";		"route attributes";
	list route {		list route {
	key "destination-prefix";		key "destination-prefix";
	description "route list";		description "route list";
	leaf description {		leaf description {
	type string;		type string;
	description "Textual description of the route.";		description "Textual description of the route.";
	}		}
	leaf destination-prefix {		leaf destination-prefix {
	type inet:ipv4-prefix;		type inet:ipv4-prefix;
	mandatory true;		mandatory true;
	description "IPv4 destination prefix.";		description "IPv4 destination prefix.";
			}
			choice next-hop-options {
			description "choice of next hop options";
			case simple-next-hop {
			leaf next-hop {
			type inet:ipv4-address;
			description "IPv4 address of the next hop.";
	}		}
	choice next-hop-options {		leaf outgoing-interface {
	description "choice of next hop options";		type nt:tp-id;
	case simple-next-hop {		description "Name of the outgoing interface.";
	leaf next-hop {
	type inet:ipv4-address;
	description "IPv4 address of the next hop.";
	}
	leaf outgoing-interface {
	type nt:tp-id;
	description "Name of the outgoing interface.";
	}
	}
	}		}
			}
	}		}
			}
	}		}
	grouping port-functions {		grouping port-functions {
	description		description
	"port functions";		"port functions";
	container port-function {		container port-function {
	description "port functions";		description "port functions";
	choice function-type {		choice function-type {
	description "type of functions";		description "type of functions";
	case ip-mapping {		case ip-mapping {
	list ip-mapping-entry {		list ip-mapping-entry {
	key "external-ip";		key "external-ip";
	description "list of NAT entry";		description "list of NAT entry";
	leaf external-ip {		leaf external-ip {
	type inet:ipv4-address;		type inet:ipv4-address;
	description "external address";		description "external address";
	}		}
	leaf internal-ip {		leaf internal-ip {
	type inet:ipv4-address;		type inet:ipv4-address;
	description "internal address";		description "internal address";
	}		}
	}
	}
	}		}
			}
	}		}
			}
	}		}
	grouping acl-list {		grouping acl-list {
	description "acl list";		description "acl list";
	list fabric-acl {		list fabric-acl {
	key fabric-acl-name;		key fabric-acl-name;
	description "fabric acl list";		description "fabric acl list";
	leaf fabric-acl-name {		leaf fabric-acl-name {
	type string;		type string;
	description "acl name";		description "acl name";
	}
	}		}
			}
	}		}
	}		}
	<CODE ENDS>		<CODE ENDS>
	<CODE BEGINS> file "ietf-fabric-topology@2017-11-21.yang"		<CODE BEGINS> file "ietf-fabric-topology@2017-11-29.yang"
	module ietf-fabric-topology {		module ietf-fabric-topology {
	yang-version 1.1;		yang-version 1.1;
	namespace "urn:ietf:params:xml:ns:yang:ietf-fabric-topology";		namespace "urn:ietf:params:xml:ns:yang:ietf-fabric-topology";
	prefix fabric;		prefix fabric;
	import ietf-network { prefix nw; }		import ietf-network { prefix nw; }
	import ietf-network-topology { prefix nt; }		import ietf-network-topology { prefix nt; }
	import ietf-fabric-types { prefix fabrictype; revision-date "2016-09-29"; }		import ietf-fabric-types { prefix fabrictype;}
	organization		organization
	"IETF I2RS (Interface to the Routing System) Working Group";		"IETF I2RS (Interface to the Routing System) Working Group";
	contact		contact
	"WG Web: <http://tools.ietf.org/wg/i2rs/ >		"WG Web: <http://tools.ietf.org/wg/i2rs/ >
	WG List: <mailto:i2rs@ietf.org>		WG List: <mailto:i2rs@ietf.org>
	WG Chair: Susan Hares		WG Chair: Susan Hares
	<mailto:shares@ndzh.com>		<mailto:shares@ndzh.com>
	WG Chair: Russ White		WG Chair: Russ White
	<mailto:russ@riw.us>		<mailto:russ@riw.us>
	Editor: Yan Zhuang		Editor: Yan Zhuang
	<mailto:zhuangyan.zhuang@huawei.com>		<mailto:zhuangyan.zhuang@huawei.com>
	Editor: Danian Shi		Editor: Danian Shi
	<mailto:shidanian@huawei.com>";		<mailto:shidanian@huawei.com>";
	description		description
	"This module contains a collection of YANG definitions for Fabric.		"This module contains a collection of YANG definitions for Fabric.
	Copyright (c) 2016 IETF Trust and the persons identified as		Copyright (c) 2016 IETF Trust and the persons identified as
	authors of the code. All rights reserved.		authors of the code. All rights reserved.
	Redistribution and use in source and binary forms, with or
	without modification, is permitted pursuant to, and subject
	to the license terms contained in, the Simplified BSD License
	set forth in Section 4.c of the IETF Trust's Legal Provisions
	Relating to IETF Documents
	(http://trustee.ietf.org/license-info).
	This version of this YANG module is part of		Redistribution and use in source and binary forms, with or
	draft-zhuang-i2rs-yang-dc-fabric-network-topology;		without modification, is permitted pursuant to, and subject
	see the RFC itself for full legal notices.";		to the license terms contained in, the Simplified BSD License
			set forth in Section 4.c of the IETF Trust's Legal Provisions
			Relating to IETF Documents(http://trustee.ietf.org/license-info).
	revision "2017-11-21"{		This version of this YANG module is part of
	description		draft-zhuang-i2rs-yang-dc-fabric-network-topology;
	"fix warnings.";		see the RFC itself for full legal notices.";
	reference		revision "2017-11-29"{
	"draft-ietf-i2rs-yang-dc-fabric-network-topology-01";		description "fix comments";
			reference
			"draft-ietf-i2rs-yang-dc-fabric-network-topology-02";
			}
			revision "2017-11-21"{
			description "fix warnings.";
			reference
			"draft-ietf-i2rs-yang-dc-fabric-network-topology-01";
	}		}
	revision "2017-06-29"{		revision "2017-06-29"{
	description		description
	"update to NMDA compliant format";		"update to NMDA compliant format";
	reference		reference
	"draft-zhuang-i2rs-yang-dc-fabric-network-topology-04";		"draft-zhuang-i2rs-yang-dc-fabric-network-topology-04";
	}		}
	revision "2017-03-10" {		revision "2017-03-10" {
	description		description
	"remove the rpcs and add extra attributes";		"remove the rpcs and add extra attributes";
	reference		reference
	"draft-zhuang-i2rs-yang-dc-fabric-network-topology-03";		"draft-zhuang-i2rs-yang-dc-fabric-network-topology-03";
	}		}
	revision "2016-09-29" {
	description		revision "2016-09-29" {
			description
	"Initial revision of fabric topology.";		"Initial revision of fabric topology.";
	reference		reference
	"draft-zhuang-i2rs-yang-dc-fabric-network-topology-02";		"draft-zhuang-i2rs-yang-dc-fabric-network-topology-02";
	}		}
	identity fabric-context {		identity fabric-context {
	description		description
	"identity of fabric context";		"identity of fabric context";
	}		}
	typedef fabric-id {		typedef fabric-id {
	type nw:node-id;		type nw:node-id;
	description		description
	"An identifier for a fabric in a topology.		"An identifier for a fabric in a topology.
	The identifier is generated by compose-fabric RPC.";		The identifier is generated by compose-fabric RPC.";
	}		}
	//grouping statements		//grouping statements
	grouping fabric-network-type {		grouping fabric-network-type {
	description "Identify the topology type to be fabric.";		description "Identify the topology type to be fabric.";
	container fabric-network {		container fabric-network {
	presence "indicates fabric Network";		presence "indicates fabric Network";
	description		description
	"The presence of the container node indicates		"The presence of the container node indicates
	fabric Topology";		fabric Topology";
	}		}
	}
	grouping fabric-options {		}
	description "options for a fabric";
	leaf gateway-mode {		grouping fabric-options {
			description "options for a fabric";
			leaf gateway-mode {
	type enumeration {		type enumeration {
	enum centralized {		enum centralized {
	description "centerilized gateway";		description "centerilized gateway";
	}		}
	enum distributed {		enum distributed {
	description "distributed gateway";		description "distributed gateway";
	}		}
	}		}
	default "distributed";		default "distributed";
	description "gateway mode";		description "gateway mode";
	}		}
	leaf traffic-behavior {		leaf traffic-behavior {
	type enumeration {		type enumeration {
	enum normal {		enum normal {
	description "normal";		description "normal";
	}		}
	enum policy-driven {		enum policy-driven {
	description "policy driven";		description "policy driven";
	}		}
	}		}
	default "normal";		default "normal";
	description "traffic behavior of the fabric";		description "traffic behavior of the fabric";
	}		}
	leaf-list capability-supported {		leaf-list capability-supported {
	type fabrictype:service-capabilities;		type fabrictype:service-capabilities;
	description		description
	"supported services of the fabric";		"supported services of the fabric";
			}
	}		}
	}
	grouping device-attributes {		grouping device-attributes {
	description "device attributes";		description "device attributes";
	leaf device-ref {		leaf device-ref {
	type fabrictype:node-ref;		type fabrictype:node-ref;
	description		description
	"the device it includes to";		"the device it includes to";
	}		}
	leaf role {		leaf role {
	type fabrictype:device-role;		type fabrictype:device-role;
	default "LEAF";		default "LEAF";
	description		description
	"role of the node";		"role of the node";
			}
	}		}
	}		grouping link-attributes {
			description "link attributes";
	grouping link-attributes {		leaf link-ref {
	description "link attributes";
	leaf link-ref {
	type fabrictype:link-ref;		type fabrictype:link-ref;
	description		description
	"the link it includes";		"the link it includes";
			}
	}		}
	}
	grouping port-attributes {		grouping port-attributes {
	description "port attributes";		description "port attributes";
	leaf port-ref {		leaf port-ref {
	type fabrictype:tp-ref;		type fabrictype:tp-ref;
	description		description
	"port reference";		"port reference";
	}		}
	leaf port-type {		leaf port-type {
	type enumeration {		type identityref {
	enum ETH {		base fabrictype:port-type;
	description "ETH";
	}
	enum SERIAL {
	description "Serial";
	}
	}		}
	description		description
	"port type: ethernet or serial";		"port type: ethernet or serial or others";
	}		}
	leaf bandwith {		leaf bandwidth {
	type enumeration {		type identityref {
	enum 1G {		base fabrictype:bandwidth;
	description "1G";
	}
	enum 10G {
	description "10G";
	}
	enum 40G {
	description "40G";
	}
	enum 100G {
	description "100G";
	}
	enum 10M {
	description "10M";
	}
	enum 100M {
	description "100M";
	}
	enum 1M {
	description "1M";
	}
	}		}
	description		description
	"bandwidth on the port";		"bandwidth on the port";
			}
	}		}
	}
	grouping fabric-attributes {		grouping fabric-attributes {
	description "attributes of a fabric";		description "attributes of a fabric";
	leaf fabric-id {		leaf fabric-id {
	type fabric-id;		type fabric-id;
	description		description
	"fabric id";		"fabric id";
	}		}
	leaf name {		leaf name {
	type string;		type string;
	description		description
	"name of the fabric";		"name of the fabric";
	}		}
	leaf type {		leaf type {
	type fabrictype:underlayer-network-type;		type fabrictype:underlay-network-type;
	description		description
	"The type of physical network that implements this fabric.Examples are vlan, and trill.";		"The type of physical network that implements
	}		this fabric.Examples are vlan, and trill.";
			}
	container vni-capacity {		container vni-capacity {
	description "number of vnis the fabric has";		description "number of vnis the fabric has";
	leaf min {		leaf min {
	type int32;		type int32;
	description		description
	"vni min capacity";		"vni min capacity";
	}		}
	leaf max {		leaf max {
	type int32;		type int32;
	description		description
	"vni max capacity";		"vni max capacity";
	}		}
	}		}
	leaf description {		leaf description {
	type string;		type string;
	description		description
	"description of the fabric";		"description of the fabric";
	}		}
	container options {		container options {
	description "options of the fabric";		description "options of the fabric";
	uses fabric-options;		uses fabric-options;
	}		}
	list device-nodes {		list device-nodes {
	key device-ref;		key device-ref;
	description "include device nodes in the fabric";		description "include device nodes in the fabric";
	uses device-attributes;		uses device-attributes;
	}		}
	list device-links {		list device-links {
	key link-ref;		key link-ref;
	description "include device links within the fabric";		description "include device links within the fabric";
	uses link-attributes;		uses link-attributes;
	}		}
			list device-ports {
	list device-ports {
	key port-ref;		key port-ref;
	description "include device ports within the fabric";		description "include device ports within the fabric";
	uses port-attributes;		uses port-attributes;
	}		}
	}		}
	// augment statements		// augment statements
	augment "/nw:networks/nw:network/nw:network-types" {		augment "/nw:networks/nw:network/nw:network-types" {
	description		description
	"Introduce new network type for Fabric-based logical topology";		"Introduce new network type for Fabric-based logical topology";
	uses fabric-network-type;		uses fabric-network-type;
	}		}
	augment "/nw:networks/nw:network/nw:node" {		augment "/nw:networks/nw:network/nw:node" {
	when "/nw:networks/nw:network/nw:network-types/fabric:fabric-network" {		when "/nw:networks/nw:network/nw:network-types/fabric:fabric-network" {
	description		description
	"Augmentation parameters apply only for networks		"Augmentation parameters apply only for networks
	with fabric topology";		with fabric topology";
	}		}
	description "Augmentation for fabric nodes created by faas.";		description "Augmentation for fabric nodes created by faas.";
	container fabric-attribute {		container fabric-attributes {
	description		description
	"attributes for a fabric network";		"attributes for a fabric network";
	uses fabric-attributes;		uses fabric-attributes;
			}
	}		}
	}
	augment "/nw:networks/nw:network/nw:node/nt:termination-point" {		augment "/nw:networks/nw:network/nw:node/nt:termination-point" {
	when "/nw:networks/nw:network/nw:network-types/fabric:fabric-network" {		when "/nw:networks/nw:network/nw:network-types/fabric:fabric-network" {
	description		description
	"Augmentation parameters apply only for networks		"Augmentation parameters apply only for networks
	with fabric topology";		with fabric topology";
	}		}
	description "Augmentation for port on fabric.";		description "Augmentation for port on fabric.";
	container fport-attribute {		container fport-attributes {
	config false;		config false;
	description		description
	"attributes for fabric ports";		"attributes for fabric ports";
	uses fabrictype:fabric-port;		uses fabrictype:fabric-port;
			}
	}		}
	}
	}		}
	<CODE ENDS>		<CODE ENDS>
	5. Security Consideration		5. Security Consideration
	The underlay topology is learnt from the physical network, while the		The underlay topology is learnt from the physical network, while the
	fabric topology is composed of a collection of the underlay		fabric topology is composed of a collection of the underlay nodes.
	nodes. The fabric model doesn't change the connections of underlay		The fabric model doesn't change the connections of underlay networks.
	networks. While there are data nodes for fabric configuration, these		While there are data nodes for fabric configuration, these data nodes
	data nodes may be considered sensitive or vulnerable in some network		may be considered sensitive or vulnerable in some network
	enviroments. Write operations (e.g., edit-config) to these data		enviroments. Write operations (e.g., edit-config) to these data
	nodes without proper protection can have a negative effect on network		nodes without proper protection can have a negative effect on network
	operations. For example, misconfiguration of underlay nodes to a		operations. For example, misconfiguration of underlay nodes to a
	fabric node may lead to inproper activities when management are		fabric node may lead to inproper activities when management are
	implemented at fabric layer by customers.		implemented at fabric layer by customers.
	6. Acknowledgements		6. Acknowledgements
	We wish to acknowledge the helpful contributions, comments, and		We wish to acknowledge the helpful contributions, comments, and
	suggestions that were received from Alexander Clemm, Xufeng Liu,		suggestions that were received from Alexander Clemm, Xufeng Liu,
	skipping to change at page 22, line 50 ¶		skipping to change at page 23, line 24 ¶
	7.2. Informative References		7.2. Informative References
	[I-D.draft-ietf-i2rs-usecase-reqs-summary]		[I-D.draft-ietf-i2rs-usecase-reqs-summary]
	Hares, S. and M. Chen, "Summary of I2RS Use Case		Hares, S. and M. Chen, "Summary of I2RS Use Case
	Requirements", I-D draft-ietf-i2rs-usecase-reqs-summary-		Requirements", I-D draft-ietf-i2rs-usecase-reqs-summary-
	01, May 2015.		01, May 2015.
	Appendix A. Non NMDA -state modules		Appendix A. Non NMDA -state modules
	<CODE BEGINS> file "ietf-fabric-topology-state@2017-11-21.yang"		<CODE BEGINS> file "ietf-fabric-topology-state@2017-11-29.yang"
	module ietf-fabric-topology-state {		module ietf-fabric-topology-state {
	yang-version 1.1;		yang-version 1.1;
	namespace "urn:ietf:params:xml:ns:yang:ietf-fabric-topology-state";		namespace "urn:ietf:params:xml:ns:yang:ietf-fabric-topology-state";
	prefix sfabric;		prefix sfabric;
	import ietf-network-state { prefix nws; }		import ietf-network-state { prefix nws; }
	import ietf-fabric-types { prefix fabrictype; revision-date "2016-09-29"; }		import ietf-fabric-types { prefix fabrictype;}
	import ietf-fabric-topology {prefix fabric;}		import ietf-fabric-topology {prefix fabric;}
	organization		organization
	"IETF I2RS (Interface to the Routing System) Working Group";		"IETF I2RS (Interface to the Routing System) Working Group";
	contact		contact
	"WG Web: <http://tools.ietf.org/wg/i2rs/ >		"WG Web: <http://tools.ietf.org/wg/i2rs/ >
	WG List: <mailto:i2rs@ietf.org>		WG List: <mailto:i2rs@ietf.org>
	WG Chair: Susan Hares		WG Chair: Susan Hares
	<mailto:shares@ndzh.com>		<mailto:shares@ndzh.com>
	WG Chair: Russ White		WG Chair: Russ White
	<mailto:russ@riw.us>		<mailto:russ@riw.us>
	Editor: Yan Zhuang		Editor: Yan Zhuang
	<mailto:zhuangyan.zhuang@huawei.com>		<mailto:zhuangyan.zhuang@huawei.com>
	Editor: Danian Shi		Editor: Danian Shi
	<mailto:shidanian@huawei.com>";		<mailto:shidanian@huawei.com>";
	description		description
	"This module contains a collection of YANG definitions for Fabric topology state for non NMDA.		"This module contains a collection of YANG definitions for
			Fabric topology state for non NMDA.
	Copyright (c) 2016 IETF Trust and the persons identified as		Copyright (c) 2016 IETF Trust and the persons identified as
	authors of the code. All rights reserved.		authors of the code. All rights reserved.
	Redistribution and use in source and binary forms, with or		Redistribution and use in source and binary forms, with or
	without modification, is permitted pursuant to, and subject		without modification, is permitted pursuant to, and subject
	to the license terms contained in, the Simplified BSD License		to the license terms contained in, the Simplified BSD License
	set forth in Section 4.c of the IETF Trust's Legal Provisions		set forth in Section 4.c of the IETF Trust's Legal Provisions
	Relating to IETF Documents		Relating to IETF Documents(http://trustee.ietf.org/license-info).
	(http://trustee.ietf.org/license-info).
	This version of this YANG module is part of		This version of this YANG module is part of
	draft-zhuang-i2rs-yang-dc-fabric-network-topology;		draft-zhuang-i2rs-yang-dc-fabric-network-topology;
	see the RFC itself for full legal notices.";		see the RFC itself for full legal notices.";
	revision "2017-11-21"{		revision "2017-11-29" {
	description		description "fix comments";
	"fix warnings.";		reference
	reference		"draft-ietf-i2rs-yang-dc-fabric-network-topology-02";
	"draft-ietf-i2rs-yang-dc-fabric-network-topology-01";		}
	}
			revision "2017-11-21"{
			description "fix warnings.";
			reference
			"draft-ietf-i2rs-yang-dc-fabric-network-topology-01";
			}
	revision "2017-06-29"{		revision "2017-06-29"{
	description		description "update to NMDA compliant format";
	"update to NMDA compliant format";		reference
	reference		"draft-zhuang-i2rs-yang-dc-fabric-network-topology-04";
	"draft-zhuang-i2rs-yang-dc-fabric-network-topology-04";		}
	}
	//grouping statements		//grouping statements
	grouping fabric-network-type {		grouping fabric-network-type {
	description "Identify the topology type to be fabric.";		description "Identify the topology type to be fabric.";
	container fabric-network {		container fabric-network {
	presence "indicates fabric Network";		presence "indicates fabric Network";
	description		description
	"The presence of the container node indicates		"The presence of the container node indicates fabric Topology";
	fabric Topology";		}
	}
	}		}
	grouping fabric-options {		grouping fabric-options {
	description "options for a fabric";		description "options for a fabric";
			leaf gateway-mode {
	leaf gateway-mode {		type enumeration {
	type enumeration {		enum centralized {
	enum centralized {		description "centerilized gateway";
	description "centerilized gateway";		}
	}		enum distributed {
	enum distributed {		description "distributed gateway";
	description "distributed gateway";		}
	}
	}
	default "distributed";
	description "gateway mode";
	}		}
			default "distributed";
			description "gateway mode";
			}
	leaf traffic-behavior {		leaf traffic-behavior {
	type enumeration {		type enumeration {
	enum normal {		enum normal {
	description "normal";		description "normal";
	}		}
	enum policy-driven {		enum policy-driven {
	description "policy driven";		description "policy driven";
	}		}
	}
	default "normal";
	description "traffic behavior of the fabric";
	}		}
			default "normal";
			description "traffic behavior of the fabric";
			}
	leaf-list capability-supported {		leaf-list capability-supported {
	type fabrictype:service-capabilities;		type fabrictype:service-capabilities;
	description		description
	"supported services of the fabric";		"supported services of the fabric";
	}		}
	}		}
	grouping device-attributes {		grouping device-attributes {
	description "device attributes";		description "device attributes";
	leaf device-ref {		leaf device-ref {
	type fabrictype:node-ref;		type fabrictype:node-ref;
	description		description "the device it includes";
	"the device it includes to";		}
	}		leaf role {
	leaf role {		type fabrictype:device-role;
	type fabrictype:device-role;		default "LEAF";
	default "LEAF";		description "role of the node";
	description		}
	"role of the node";
	}
	}		}
	grouping link-attributes {		grouping link-attributes {
	description "link attributes";		description "link attributes";
	leaf link-ref {		leaf link-ref {
	type fabrictype:link-ref;		type fabrictype:link-ref;
	description		description "the link it includes";
	"the link it includes";		}
	}
	}		}
	grouping port-attributes {		grouping port-attributes {
	description "port attributes";		description "port attributes";
	leaf port-ref {		leaf port-ref {
	type fabrictype:tp-ref;		type fabrictype:tp-ref;
	description		description "port reference";
	"port reference";		}
			leaf port-type {
			type identityref {
			base fabrictype:port-type;
	}		}
	leaf port-type {		description
	type enumeration {		"port type: ethernet or serial or others";
	enum ETH {
	description "ETH";
	}
	enum SERIAL {
	description "Serial";
	}
	}
	description
	"port type: ethernet or serial";
	}		}
	leaf bandwith {		leaf bandwidth {
	type enumeration {		type identityref {
	enum 1G {		base fabrictype:bandwidth;
	description "1G";
	}
	enum 10G {
	description "10G";
	}
	enum 40G {
	description "40G";
	}
	enum 100G {
	description "100G";
	}
	enum 10M {
	description "10M";
	}
	enum 100M {
	description "100M";
	}
	enum 1M {
	description "1M";
	}
	}
	description
	"bandwidth on the port";
	}		}
			description "bandwidth on the port";
			}
	}		}
	grouping fabric-attributes {		grouping fabric-attributes {
	description "attributes of a fabric";		description "attributes of a fabric";
			leaf fabric-id {
	leaf fabric-id {		type fabric:fabric-id;
	type fabric:fabric-id;		description "fabric id";
	description		}
	"fabric id";		leaf name {
	}		type string;
			description "name of the fabric";
	leaf name {		}
	type string;		leaf type {
	description		type fabrictype:underlay-network-type;
	"name of the fabric";		description
	}		"The type of physical network that implements this
	leaf type {		fabric.Examples are vlan, and trill.";
	type fabrictype:underlayer-network-type;
	description
	"The type of physical network that implements this fabric.Examples are vlan, and trill.";
	}
	container vni-capacity {
	description "number of vnis the fabric has";
	leaf min {
	type int32;
	description
	"vni min capacity";
	}
	leaf max {
	type int32;
	description
	"vni max capacity";
	}
	}
	leaf description {
	type string;
	description
	"description of the fabric";
	}
	container options {
	description "options of the fabric";
	uses fabric-options;
	}
	list device-nodes {
	key device-ref;
	description "include device nodes in the fabric";
	uses device-attributes;
	}
	list device-links {
	key link-ref;
	description "include device links within the fabric";
	uses link-attributes;
	}
	list device-ports {
	key port-ref;
	description "include device ports within the fabric";
	uses port-attributes;
	}		}
			container vni-capacity {
			description "number of vnis the fabric has";
			leaf min {
			type int32;
			description "vni min capacity";
			}
			leaf max {
			type int32;
			description "vni max capacity";
			}
			}
			leaf description {
			type string;
			description "description of the fabric";
			}
			container options {
			description "options of the fabric";
			uses fabric-options;
			}
			list device-nodes {
			key device-ref;
			description "include device nodes in the fabric";
			uses device-attributes;
			}
			list device-links {
			key link-ref;
			description "include device links within the fabric";
			uses link-attributes;
			}
			list device-ports {
			key port-ref;
			description "include device ports within the fabric";
			uses port-attributes;
			}
	}		}
	// augment statements		// augment statements
	augment "/nws:networks/nws:network/nws:network-types" {
	description
	"Introduce new network type for Fabric-based logical topology";
	uses fabric-network-type;		augment "/nws:networks/nws:network/nws:network-types" {
	}		description
			"Introduce new network type for Fabric-based logical topology";
			uses fabric-network-type;
			}
	augment "/nws:networks/nws:network/nws:node" {		augment "/nws:networks/nws:network/nws:node" {
	when "/nws:networks/nws:network/nws:network-types/sfabric:fabric-network" {		when "/nws:networks/nws:network/nws:network-types/sfabric:fabric-network" {
			description "Augmentation parameters apply only for networks with fabric topology.";
			}
			description "Augmentation for fabric nodes.";
			container fabric-attributes-state {
	description		description
	"Augmentation parameters apply only for networks		"attributes for a fabric network";
	with fabric topology.";		uses fabric-attributes;
	}		}
	description "Augmentation for fabric nodes.";
	container fabric-attribute-state {
	config false;
	description
	"attributes for a fabric network";
	uses fabric-attributes;
	}
	}		}
	}		}
			<CODE ENDS>
	<CODE ENDS>
	Authors' Addresses		Authors' Addresses
	Yan Zhuang		Yan Zhuang
	Huawei		Huawei
	101 Software Avenue, Yuhua District		101 Software Avenue, Yuhua District
	Nanjing, Jiangsu 210012		Nanjing, Jiangsu 210012
	China		China
	Email: zhuangyan.zhuang@huawei.com		Email: zhuangyan.zhuang@huawei.com
End of changes. 162 change blocks.
	682 lines changed or deleted		658 lines changed or added
This html diff was produced by rfcdiff 1.46. The latest version is available from http://tools.ietf.org/tools/rfcdiff/