< draft-ietf-mpls-mldp-yang-00.txt		draft-ietf-mpls-mldp-yang-01.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: May 16, 2017		Expires: September 14, 2017
	X. Liu		X. Liu
	Kuatro Technologies		Jabil
	S. Esale		S. Esale
	Juniper Networks		Juniper Networks
	X. Chen		X. Chen
	Huawei Technologies		Huawei Technologies
	Jeff Tantsura		Jeff Tantsura
	November 12, 2016		March 13, 2017
	YANG Data Model for MPLS mLDP		YANG Data Model for MPLS mLDP
	draft-ietf-mpls-mldp-yang-00		draft-ietf-mpls-mldp-yang-01
	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
	skipping to change at page 1, line 43 ¶		skipping to change at page 1, line 43 ¶
	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 http://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 16, 2017.		This Internet-Draft will expire on September 14, 2017.
	Copyright Notice		Copyright Notice
	Copyright (c) 2016 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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	to this document. Code Components extracted from this document must		to this document. Code Components extracted from this document must
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	described in the Simplified BSD License.		described in the Simplified BSD License.
	Table of Contents		Table of Contents
	1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2		1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
	2. Specification of Requirements . . . . . . . . . . . . . . . . 3		1.1. Base and Extended . . . . . . . . . . . . . . . . . . . . 3
	3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 3		2. Specification of Requirements . . . . . . . . . . . . . . . . 4
	4. Configuration . . . . . . . . . . . . . . . . . . . . . . . . 4		3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 4
	4.1. Configuration Hierarchy . . . . . . . . . . . . . . . . . 4		3.1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . 5
	4.2. mldp container . . . . . . . . . . . . . . . . . . . . . 6		3.2. FEC Types . . . . . . . . . . . . . . . . . . . . . . . . 6
	4.3. Leveraging LDP containers . . . . . . . . . . . . . . . . 6		4. Configuration . . . . . . . . . . . . . . . . . . . . . . . . 7
	4.4. YANG tree . . . . . . . . . . . . . . . . . . . . . . . . 7		4.1. Configuration Hierarchy . . . . . . . . . . . . . . . . . 7
	5. Operational State . . . . . . . . . . . . . . . . . . . . . . 9		4.2. mldp global container . . . . . . . . . . . . . . . . . . 9
	5.1. Derived states . . . . . . . . . . . . . . . . . . . . . 13		4.3. Leveraging LDP containers . . . . . . . . . . . . . . . . 9
	5.1.1. Root state . . . . . . . . . . . . . . . . . . . . . 13		4.4. Configuration Tree . . . . . . . . . . . . . . . . . . . 10
	5.1.2. Bindings state . . . . . . . . . . . . . . . . . . . 14		4.4.1. Base . . . . . . . . . . . . . . . . . . . . . . . . 10
	5.1.3. Capabilities state . . . . . . . . . . . . . . . . . 18		4.4.2. Extended . . . . . . . . . . . . . . . . . . . . . . 11
	6. Notifications . . . . . . . . . . . . . . . . . . . . . . . . 18		5. Operational State . . . . . . . . . . . . . . . . . . . . . . 13
	7. Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . 18		5.1. Base . . . . . . . . . . . . . . . . . . . . . . . . . . 13
	8. Open Items . . . . . . . . . . . . . . . . . . . . . . . . . 18		5.2. Extended . . . . . . . . . . . . . . . . . . . . . . . . 14
	9. YANG Specification . . . . . . . . . . . . . . . . . . . . . 19		5.3. Derived states . . . . . . . . . . . . . . . . . . . . . 17
	10. Security Considerations . . . . . . . . . . . . . . . . . . . 43		5.3.1. Root state . . . . . . . . . . . . . . . . . . . . . 18
	11. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 43		5.3.2. Bindings state . . . . . . . . . . . . . . . . . . . 19
	12. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 44		5.3.3. Capabilities state . . . . . . . . . . . . . . . . . 22
	13. References . . . . . . . . . . . . . . . . . . . . . . . . . 44		6. Notifications . . . . . . . . . . . . . . . . . . . . . . . . 22
	13.1. Normative References . . . . . . . . . . . . . . . . . . 44		6.1. Base . . . . . . . . . . . . . . . . . . . . . . . . . . 22
	13.2. Informative References . . . . . . . . . . . . . . . . . 45		6.2. Extended . . . . . . . . . . . . . . . . . . . . . . . . 22
	Appendix A. Additional Contributors . . . . . . . . . . . . . . 46		7. Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
	Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 46		8. Open Items . . . . . . . . . . . . . . . . . . . . . . . . . 23
			9. YANG Specification . . . . . . . . . . . . . . . . . . . . . 23
			9.1. Base . . . . . . . . . . . . . . . . . . . . . . . . . . 23
			9.2. Extended . . . . . . . . . . . . . . . . . . . . . . . . 33
			10. Security Considerations . . . . . . . . . . . . . . . . . . . 54
			11. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 54
			12. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 54
			13. References . . . . . . . . . . . . . . . . . . . . . . . . . 54
			13.1. Normative References . . . . . . . . . . . . . . . . . . 54
			13.2. Informative References . . . . . . . . . . . . . . . . . 56
			Appendix A. Additional Contributors . . . . . . . . . . . . . . 56
			Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 56
	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
	highly dependent on LDP YANG data model		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
	[I-D.ietf-mpls-ldp-mldp-yang]. This implies that an opertor will		and manage control plane for mLDP. For example, an operator would
	need to use base LDP module to configure and manage control plane for		enable LDP discovery on MPLS interface to establish LDP/mLDP peering
	mLDP. For example, an operator would enable LDP discovery on MPLS		on which mLDP bindings could be exchanged. Similarly, an operator
	interface to establish LDP/mLDP peering on which mLDP bindings could		could query state information for an LDP peer in order to verify
	be exchanged. Similarly, an operator could query state information		peering attributes etc.
	for an LDP peer in order to verify peering attributes etc.
	Moreover, it is important to note here that any assumptions made in		Moreover, it is important to note here that any assumptions made in
	the LDP model also hold true in this document, unless otherwise		the LDP model also hold true in this document, unless otherwise
	explicitly stated.		explicitly stated.
	This document specifies mLDP model under ietf-mpls-mldp that augments		Like its parent LDP data model, this mLDP model also defines the
	LDP model as defined under ietf-mpls-ldp		following constructs for managing the mLDP protocol:
	[I-D.ietf-mpls-ldp-mldp-yang]. Like its base LDP data model, this
	model also defines the 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
	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
			Like LDP model, the configuration and state items are divided into
			following two broad categories:
			o Base
			o Extended
			The "base" category contains the basic and fundamental features that
			are covered in mLDP base specification [RFC6388] alongwith few
			significant extension like targeted mLDP [RFC7060], constituting the
			minumum requirements for an mLDP deployment. Whereas, the "extended"
			category contains all other non-base features (such as recursive FEC
			support, protection etc.). All the items in a base category are
			mandatory and hence no "if-feature" is allowed under the "base"
			category. While "base" model support will suffice for small
			deployments, large deployments will require not only the "base"
			module support but also "extended" support for some selected and
			required features.
			The base and extended catogories are defined in their own modules
			ietf-mpls-mldp and ietf-mpls-mldp-extended respectively, each of
			which augmenting LDP base model ietf-mpls-ldp as defined under ietf-
			mpls-ldp [I-D.ietf-mpls-ldp-yang].
			Like LDP, mLDP "base" model configuration and state covers ipv4
			address-family only, with ipv6 address-family related configuration
			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].
	3. Overview		3. Overview
			This document defines a new module named "ietf-mpls-mldp" for mLDP
			YANG base data model that augments /rt:routing/rt:control-plane-
			protocols/ldp:mpls-ldp defined in [I-D.ietf-mpls-ldp-yang]. The
			document also defines "ietf-mpls-mldp-extended" module that models
			the extended mLDP features under YANG.
			Following diagram depicts high level mLDP yang tree organization and
			hierarchy with respect to LDP:
			+-- rw routing
			+-- rw control-plane-protocols
			+-- rw mpls-ldp
			+-- rw some_container
			| +-- rw config
			| | +-- rw .... // ldp base
			| | +-- rw ldp-ext:.... // ldp extended
			| | ...
			| | +-- rw mldp
			| | +-- rw ... // mldp base
			| | +-- rw mldp-ext:.... // mldp extended
			| | ...
			| +-- ro state
			| | +-- ro .... // ldp base
			| | +-- ro ldp-ext:.... // ldp extended
			| | ...
			| | +-- ro mldp
			| | +-- ro ... // mldp base
			| | +-- ro mldp-ext:.... // mldp extended
			| | ...
			+-- rw ...
			|
			notifications:
			+--- n mpls-mldp-some_event
			+--- n ...
			Figure 1
			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 mLDP Base Specification [RFC6388]		o Base:
	o mLDP Recursive FEC [RFC6512]		* mLDP Base Specification [RFC6388]
	o Targeted mLDP [RFC7060]		* Targeted mLDP [RFC7060]
	o mLDP Fast-Reroute (FRR):		* Configured Leaf LSPs (manually provisioned)
	* Node Protection [RFC7715]		o Extended:
	* Multicast-only
	o In-band Signaling:		* mLDP Recursive FEC [RFC6512]
			* mLDP Fast-Reroute (FRR):
	* mLDP In-band Signaling [RFC6826]		+ Node Protection [RFC7715]
	* mLDP In-band signaling in a VRF [RFC7246]		+ Multicast-only
	* mLDP In-band Signaling with Wildcards [RFC7438]		* In-band Signaling:
	o Hub-and-Spoke Multipoint LSPs [RFC7140]		+ mLDP In-band Signaling [RFC6826]
	o Configured Leaf LSPs (manually provisioned)		+ mLDP In-band signaling in a VRF [RFC7246]
			+ mLDP In-band Signaling with Wildcards [RFC7438]
			* Hub-and-Spoke Multipoint LSPs [RFC7140]
	[Ed Note: Some of the topics in the above list are to be addressed/		[Ed Note: Some of the topics in the above list are to be addressed/
	extended in a later revision of this document].		extended in a later revision of this document].
			3.2. FEC Types
			The FEC for Multipoint LSP is presented as (root-address, opaque-
			type). The following is the table for various type of MP opaque
			values with their keys, as covered in the configuration and state
			model:
			+-------------------------+--------------------+------------+
			| Opaque Type | Key | RFC |
			+-------------------------+--------------------+------------+
			| Generic LSP Identifier | LSP Id | [RFC6388] |
			| Transit IPv4 Source | Source, Group | [RFC6826] |
			| Transit IPv6 Source | Source, Group | [RFC6826] |
			| Transit IPv4 Bidir | RP, Group | [RFC6826] |
			| Transit IPv6 Bidir | RP, Group | [RFC6826] |
			| Transit VPNv4 Source | Source, Group, RD | [RFC7246] |
			| Transit VPNv6 Source | Source, Group, RD | [RFC7246] |
			| Transit VPNv4 Bidir | RP, Group, RD | [RFC7246] |
			| Transit VPNv6 Bidir | RP, Group, RD | [RFC7246] |
			| Recursive Opaque | Root | [RFC6512] |
			| VPN-Recursive Opaque | Root, RD | [RFC6512] |
			+-------------------------+--------------------+------------+
			Table 1: MP Opaque Types and keys
			It is to be noted that there are three basic types (LSP Id, Source,
			and Bidir) and then there are variants (VPN, recursive, VPN-
			recursive) on top of these basic types.
			The "base" model includes only the "Generic LSP Identifier" opaque
			type (for ipv4), while rest of the above types are covered by the
			"extended" model.
	4. Configuration		4. Configuration
	4.1. Configuration Hierarchy		4.1. Configuration Hierarchy
	In terms of overall configuration layout, following figure highlights		Following is the high-level configuration organization for base and
	extensions to LDP configuration model to incorporate mLDP:		extended mLDP:
	module: ietf-mpls-ldp
	augment /rt:routing/rt:control-plane-protocols/rt:control-plane-protocol:		augment /rt:routing/rt:control-plane-protocols/rt:control-plane-protocol:
	+-- mpls-ldp		+-- mpls-ldp
	+-- global		+-- global
	| +-- ...
	| +-- ...
	| +-- mldp (augmentation)
	| | +-- ...
	| | +-- ...
	| | +-- address-family* [afi]
	| | +-- ...
	| | +-- ...
	| | +-- configured-leaf-lsps
	| | +-- p2mp
	| | | +-- ...
	| | | +-- ...
	| | +-- mp2mp
	| | +-- ...
	| | +-- ...
	| +-- capability
	| +-- ...
	| +-- ...
	| +-- mldp (augmentation)
	| +-- ...
	| +-- ...
	+-- peers
	+-- ...		+-- ...
	+-- ...		+-- ...
	+-- peer*		+-- mldp
	+-- ...		| +-- ...
	+-- ...		| +-- ...
	+-- capability		| +-- address-families
	+-- ...		| +-- ipv4
	+-- ...		| | +-- ...
	+-- mldp		| | +-- mldp-ext: ...
	+-- ...		| | +-- ...
	+-- ...		| | +-- configured-leaf-lsps
			| | +-- ...
			| | +-- ...
			| | +-- mldp-ext: ...
			| | +-- ...
			| +-- mldp-ext: ipv6
			| +-- ...
			| +-- ...
			| +-- configured-leaf-lsps
			| +-- ...
			| +-- ...
			+-- capability
			| +-- mldp
			| +-- ...
			| +-- mldp-ext: ...
			| +-- ...
			+-- forwarding-nexthop
			+--- interfaces
			+--- interface* [name]
			+--- mldp-ext: ...
	Figure 1		Figure 2
	From above hierarchy, we can categorize mLDP configuration parameters		From above hierarchy, we can categorize mLDP configuration parameters
	into two types:		into two types:
	o Parameters that are mLDP specific		o Parameters that are mLDP specific
	o Parameters that leverage/extend LDP containers and parameters		o Parameters that leverage/extend LDP containers and parameters
	Following subsections first describe mLDP specific configuration		Following subsections first describe mLDP specific configuration
	parameters, followed by those leveraging LDP.		parameters, followed by those leveraging LDP. It is to be noted that
			these parameters are defined under their respective base or extended
			module as per their categorization.
	4.2. mldp container		4.2. mldp global container
	mldp container is an augmentation of LDP global container and holds		mldp container is an augmentation of LDP global container and holds
	the configuration related to items that are mLDP specific. The main		the configuration related to items that are mLDP specific. The main
	items under this container are:		items under this container are:
	o mLDP enabling: To enable mLDP under a (VRF) routing instance, mldp		o mLDP enabling: To enable mLDP under a (VRF) routing instance, mldp
	container is enabled under LDP. Given that mLDP requires LDP		container is enabled under LDP. Given that mLDP requires LDP
	signalling, it is not sensible to allow disabling LDP control		signalling, it is not sensible to allow disabling LDP control
	plane under a (VRF) network-instance while requiring mLDP to be		plane under a (VRF) network-instance while requiring mLDP to be
	enabled for the same. However, if a user wants only to allow		enabled for the same. However, if a user wants only to allow
	skipping to change at page 7, line 35 ¶		skipping to change at page 10, line 35 ¶
	(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		This goes without saying that mLDP configuration tree follows the
	same approach as LDP, where the tree comprise leafs for intended		same approach as LDP, where the tree comprise leafs for intended
	configuration.		configuration.
	4.4. YANG tree		4.4. Configuration Tree
	The following figure captures the YANG tree for mLDP configuration.
	module: ietf-mpls-mldp		4.4.1. Base
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global:		Following is a simplified graphical representation of the data model
	+--rw mldp {mldp}?		for mLDP base configuration
	+--rw config
	| +--rw enable? boolean
	+--rw address-family* [afi]
	+--rw afi ldp:ldp-address-family
	+--rw config
	| +--rw multicast-only-frr {mldp-mofrr}?
	| | +--rw prefix-list? ldp:prefix-list-ref
	| +--rw recursive-fec
	| +--rw prefix-list? ldp:prefix-list-ref
	+--rw configured-leaf-lsps
	+--rw p2mp
	| +--rw roots-ipv4
	| | +--rw root* [root-address]
	| | +--rw root-address inet:ipv4-address
	| | +--rw lsp* [lsp-id source-address group-address]
	| | +--rw lsp-id uint16
	| | +--rw source-address inet:ipv4-address
	| | +--rw group-address inet:ipv4-address-no-zone
	| +--rw roots-ipv6
	| +--rw root* [root-address]
	| +--rw root-address inet:ipv6-address
	| +--rw lsp* [lsp-id source-address group-address]
	| +--rw lsp-id uint16
	| +--rw source-address inet:ipv6-address
	| +--rw group-address inet:ipv6-address-no-zone
	+--rw mp2mp
	+--rw roots-ipv4
	| +--rw root* [root-address]
	| +--rw root-address inet:ipv4-address
	| +--rw lsp* [lsp-id source-address group-address]
	| +--rw lsp-id uint16
	| +--rw source-address inet:ipv4-address
	| +--rw group-address inet:ipv4-address-no-zone
	+--rw roots-ipv6
	+--rw root* [root-address]
	+--rw root-address inet:ipv6-address
	+--rw lsp* [lsp-id source-address group-address]
	+--rw lsp-id uint16
	+--rw source-address inet:ipv6-address
	+--rw group-address inet:ipv6-address-no-zone
			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:config/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
	+--rw hub-and-spoke {capability-mldp-hsmp}?
			augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global:
			+--rw mldp
			+--rw config
	| +--rw enable? boolean		| +--rw enable? boolean
	+--rw node-protection {capability-mldp-node-protection}?		+--rw address-families
	+--rw plr? boolean		+--rw ipv4
	+--rw merge-point		+--rw configured-leaf-lsps
	+--rw enable? boolean		+--rw p2mp
	+--rw targeted-session-teardown-delay? uint16		| +--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
			+--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
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/ldp:forwarding-nexthop/ldp:interfaces/ldp:interface/ldp:address-family/ldp:config:		Figure 3
	+--rw mldp-disable? boolean {mldp}?
			4.4.2. Extended
			Following is a simplified graphical representation of the data model
			for mLDP extended configuration
			module: ietf-mpls-mldp-extended
			augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/ldp:config/ldp:capability/mldp:mldp:
			+--rw hub-and-spoke {capability-mldp-hsmp}?
			| +--rw enable? boolean
			+--rw node-protection {capability-mldp-node-protection}?
			+--rw plr? boolean
			+--rw merge-point
			+--rw enable? boolean
			+--rw targeted-session-teardown-delay? uint16
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:config/ldp:capability:		augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:config/ldp:capability:
	+--rw mldp {mldp}?		+--rw mldp {per-peer-capability}?
	+--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
	+--rw hub-and-spoke {capability-mldp-hsmp}?
	| +--rw enable? boolean
	+--rw node-protection {capability-mldp-node-protection}?
	+--rw plr? boolean
	+--rw merge-point
	+--rw enable? boolean
	+--rw targeted-session-teardown-delay? uint16
	Figure 2		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:
			+--:(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/ldp-ext:forwarding-nexthop/ldp-ext:interfaces/ldp-ext:interface/ldp-ext:address-family/ldp-ext:config:
			+--rw mldp-disable? boolean
			augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families:
			+--rw ipv6
			+--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
	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 state containers.
	Please note this state tree refers both the configuration "applied"		Please note this state tree refers both the configuration "applied"
	state as well as the "derived" state related to the mLDP protocol.		state as well as the "derived" state related to the mLDP protocol.
	[Ed note: Future revision will realign]		[Ed note: Future revision will realign]
			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 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:global/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:peers/ldp:peer/ldp:state/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:		augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global:
	+--rw mldp {mldp}?		+--rw mldp
	+--ro state		+--ro state
	| +--ro enable? boolean		| +--ro enable? boolean
	+--rw address-family* [afi]		+--rw address-families
	+--ro state		+--rw ipv4
	+--ro multicast-only-frr {mldp-mofrr}?		+--ro state
	| +--ro prefix-list? ldp:prefix-list-ref
	+--ro recursive-fec
	| +--ro prefix-list? ldp:prefix-list-ref
	+--ro ipv4
	| +--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* [root-address lsp-id recur-root-address recur-rd]
	| | +--ro root-address inet:ipv4-address
	| | +--ro lsp-id uint32
	| | +--ro recur-root-address inet:ip-address
	| | +--ro recur-rd route-distinguisher
	| | +--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? mpls:mpls-label
	| | +--ro mbb-role? enumeration
	| | +--ro mofrr-role? enumeration
	| +--ro opaque-type-transit
	| | +--ro fec-label* [root-address source-address group-address ... ]
	| | +--ro root-address inet:ipv4-address
	| | +--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? multipoint-type
	| | +--ro peer* [direction peer advertisement-type]
	| | +--ro direction ldp:downstream-upstream
	| | +--ro peer leafref
	| | +--ro advertisement-type ldp:advertised-received
	| | +--ro label? mpls:mpls-label
	| | +--ro mbb-role? enumeration
	| | +--ro mofrr-role? enumeration
	| +--ro opaque-type-bidir
	| +--ro fec-label* [root-address rp group-address ... ]
	| +--ro root-address inet:ipv4-address
	| +--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? multipoint-type
	| +--ro peer* [direction peer advertisement-type]
	| +--ro direction ldp:downstream-upstream
	| +--ro peer leafref
	| +--ro advertisement-type ldp:advertised-received
	| +--ro label? mpls:mpls-label
	| +--ro mbb-role? enumeration
	| +--ro mofrr-role? enumeration
	+--ro ipv6
	+--ro roots		+--ro roots
	| +--ro root* [root-address]		+--ro root* [root-address]
	| +--ro root-address inet:ipv6-address		+--ro root-address inet:ipv4-address
	| +--ro is-self? boolean		+--ro is-self? boolean
	| +--ro reachability* [address interface]		+--ro reachability* [address interface]
	| +--ro address inet:ipv6-address		| +--ro address inet:ipv4-address
	| +--ro interface ldp:mpls-interface-ref		| +--ro interface ldp:mpls-interface-ref
	| +--ro peer? leafref		| +--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
			5.2. Extended
			Following is a simplified graphical representation of the data model
			for mLDP extended operational state:
			module: ietf-mpls-mldp-extended
			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:
			+--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 recursive-fec* [recur-root-address recur-rd]
			+--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:
			+--rw ipv6
			+--ro state
			+--ro roots
			+--ro root* [root-address]
			+--ro root-address inet:ipv6-address
			+--ro is-self? boolean
			+--ro reachability* [address interface]
			| +--ro address inet:ipv6-address
			| +--ro interface ldp:mpls-interface-ref
			| +--ro peer? leafref
	+--ro bindings		+--ro bindings
	+--ro opaque-type-lspid		+--ro opaque-type-lspid
	| +--ro fec-label* [root-address lsp-id recur-root-address recur-rd]		| +--ro fec-label* [lsp-id]
	| +--ro root-address inet:ipv6-address		| +--ro lsp-id uint32
	| +--ro lsp-id uint32		| +--ro multipoint-type? mldp:multipoint-type
	| +--ro recur-root-address inet:ip-address
	| +--ro recur-rd route-distinguisher
	| +--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? mpls:mpls-label		| | +--ro label? rt-types:mpls-label
	| +--ro mbb-role? enumeration		| | +--ro mbb-role? enumeration
	| +--ro mofrr-role? enumeration		| | +--ro mofrr-role? mofrr-role
			| +--ro recursive-fec* [recur-root-address recur-rd]
			| +--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-transit		+--ro opaque-type-transit
	| +--ro fec-label* [root-address source-address group-address ... ]		| +--ro fec-label* [source-address group-address rd recur-root-address recur-rd]
	| +--ro root-address inet:ipv6-address
	| +--ro source-address inet:ip-address		| +--ro source-address inet:ip-address
	| +--ro group-address inet:ip-address-no-zone		| +--ro group-address inet:ip-address-no-zone
	| +--ro rd route-distinguisher		| +--ro rd route-distinguisher
	| +--ro recur-root-address inet:ip-address		| +--ro recur-root-address inet:ip-address
	| +--ro recur-rd route-distinguisher		| +--ro recur-rd route-distinguisher
	| +--ro multipoint-type? multipoint-type		| +--ro multipoint-type? mldp: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? mpls:mpls-label		| +--ro label? rt-types:mpls-label
	| +--ro mbb-role? enumeration		| +--ro mbb-role? enumeration
	| +--ro mofrr-role? enumeration		| +--ro mofrr-role? mofrr-role
	+--ro opaque-type-bidir		+--ro opaque-type-bidir
	+--ro fec-label* [root-address rp group-address ... ]		+--ro fec-label* [rp group-address rd recur-root-address recur-rd]
	+--ro root-address inet:ipv6-address
	+--ro rp inet:ip-address		+--ro rp inet:ip-address
	+--ro group-address inet:ip-address-no-zone		+--ro group-address inet:ip-address-no-zone
	+--ro rd route-distinguisher		+--ro rd route-distinguisher
	+--ro recur-root-address inet:ip-address		+--ro recur-root-address inet:ip-address
	+--ro recur-rd route-distinguisher		+--ro recur-rd route-distinguisher
	+--ro multipoint-type? multipoint-type		+--ro multipoint-type? mldp: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? mpls:mpls-label		+--ro label? rt-types:mpls-label
	+--ro mbb-role? enumeration		+--ro mbb-role? enumeration
	+--ro mofrr-role? enumeration		+--ro mofrr-role? mofrr-role
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/ldp:forwarding-nexthop/ldp:interfaces/ldp:interface/ldp:address-family/ldp:state:
	+--ro mldp-disable? boolean {mldp}?
	augment /rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/ldp:global/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
	+--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 {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
	+--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:received-peer-state/ldp:capability:
	+--ro mldp {mldp}?
	+--ro p2mp
	| +--ro enable? boolean
	+--ro mp2mp
	| +--ro enable? boolean
	+--ro make-before-break
	| +--ro enable? boolean
	+--ro hub-and-spoke
	| +--ro enable? boolean
	+--ro node-protection
	+--ro plr? boolean
	+--ro merge-point? boolean
	Figure 3		Figure 6
	5.1. 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
	o Bindings (FEC-label)		o Bindings (FEC-label)
	o Capabilities		o Capabilities
	5.1.1. Root state		5.3.1. Root state
	Root address is a fundamental construct for MP FEC bindings and LSPs.		Root address is a fundamental construct for MP FEC bindings and LSPs.
	The root state provides information on all the known roots in a given		The root state provides information on all the known roots in a given
	address-familty, and their information on the root reachability (as		address-familty, and their information on the root reachability (as
	learnt from RIB). In case of multi-path reachability to a root, the		learnt from RIB). In case of multi-path reachability to a root, the
	selection of upstream path is done on per-LSP basis at the time of		selection of upstream path is done on per-LSP basis at the time of
	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.
	skipping to change at page 14, line 31 ¶		skipping to change at page 18, line 44 ¶
	LDP: peer 192.168.0.3:0		LDP: peer 192.168.0.3:0
	root 2.2.2.2:		root 2.2.2.2:
	path1:		path1:
	RIB: 3.3.3.3; (NOTE: This is a recursive path)		RIB: 3.3.3.3; (NOTE: This is a recursive path)
	LDP: peer 192.168.0.3:0 (NOTE: T-mLDP peer)		LDP: peer 192.168.0.3:0 (NOTE: T-mLDP peer)
	root 9.9.9.9:		root 9.9.9.9:
	. . . .		. . . .
	Figure 4		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 9.9.9.9:
	is-self		is-self
	Figure 5		Figure 8
	5.1.2. 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
	(advertised) bindings. The FEC is presented as (root-address,		(advertised) bindings. The FEC is presented as (root-address,
	opaque-type-data) and the direction (upstream or downstream) is		opaque-type-data) as described earlier in section Section 3.2, and
	picked with respect to root reachability. In case of MBB or/and		the direction (upstream or downstream) is picked with respect to root
	MoFRR, the role of a given peer binding is also provided with respect		reachability. In case of MBB or/and MoFRR, the role of a given peer
	to MBB (active or standby) or/and MoFRR (primary or backup).		binding is also provided with respect to MBB (active or standby) or/
			and MoFRR (primary or backup).
	This document covers following type of opaque values with their keys
	in the operational model of mLDP bindings:
	+-------------------------+--------------------+------------+
	| Opaque Type | Key | RFC |
	+-------------------------+--------------------+------------+
	| Generic LSP Identifier | LSP Id | [RFC6388] |
	| Transit IPv4 Source | Source, Group | [RFC6826] |
	| Transit IPv6 Source | Source, Group | [RFC6826] |
	| Transit IPv4 Bidir | RP, Group | [RFC6826] |
	| Transit IPv6 Bidir | RP, Group | [RFC6826] |
	| Transit VPNv4 Source | Source, Group, RD | [RFC7246] |
	| Transit VPNv6 Source | Source, Group, RD | [RFC7246] |
	| Transit VPNv4 Bidir | RP, Group, RD | [RFC7246] |
	| Transit VPNv6 Bidir | RP, Group, RD | [RFC7246] |
	| Recursive Opaque | Root | [RFC6512] |
	| VPN-Recursive Opaque | Root, RD | [RFC6512] |
	+-------------------------+--------------------+------------+
	Table 1: MP Opaque Types and keys
	It is to be noted that there are three basic types (LSP Id, Source,
	and Bidir) and then there are variants (VPN, recursive, VPN-
	recursive) on top of these basic types.
	Following captures a high level tree hierarchy for mLDP bindings		Following captures a high level tree hierarchy for mLDP bindings
	state:		state:
	+--rw mldp (augmentation of ldp:global)		+--rw mpls-ldp!
	+--rw address-family* [afi]		+--rw global
	+--rw afi address-family		+--rw mldp
			+--rw address-families
			+--rw ipv4 (or ipv6)
	+--ro state		+--ro state
	+--ro ipv4 (or ipv6)		+--ro roots
	+--ro bindings		+--ro root* [root-address]
	+--ro opaque-type-xxx [root-address, type-specific-key]		+--ro ....
	+--ro root-address		+--ro bindings
	+--ro ...		+--ro opaque-type-xxx
	+--ro recur-root-address inet:ipv4-address		| +--ro fec-label* [type-specific-key]
	+--ro recur-rd route-distinguisher		| +--ro some_key_1 ...
	+--ro multipoint-type? multipoint-type		| +--ro some_key_2 ...
	+--ro peer* [direction peer advertisement-type]		| +--ro multipoint-type? multipoint-type
	+--ro direction downstream-upstream		| +--ro peer* [direction peer advertisement-type]
	+--ro peer leafref		| | +--ro direction ldp:downstream-upstream
	+--ro advertisement-type advertised-received		| | +--ro peer leafref
	+--ro label? mpls:mpls-label		| | +--ro advertisement-type ldp:advertised-received
	+--ro mbb-role? enumeration		| | +--ro label? rt-types:mpls-label
	+--ro mofrr-role? enumeration		| | +--ro mbb-role? enumeration
			| | +--ro mldp-ext:mofrr-role? mofrr-role
			+--ro opaque-type-yyy
			| +--ro fec-label* [type-specific-key]
			| +--ro some_key_1 ...
			...
	Figure 6		Figure 9
	In the above tree, the type-specific-key varies with the base type as		mLDP binding state is organized and presented per root address, and
	listed in earlier Table 1. For example, if the opaque type is		hence the bindings container hang off a root node in the model. The
	Generic LSP Identifier, then the type-specific-key will be a uint32		bindings state is made available for FECs pertaining to different
	value corresponding to the LSP. Please see the complete model for		types of opaque types, with some state avaiable under "base" tree and
	all other types.		the rest under "extended".
	Moreover, the binding tree defines only three types of sub-trees		In the above tree, the various opaque types alongwith their type
	(i.e. lspid, src, and bidir) which is able to map the respective		specific key(s) refer to the table Table 1 captured earlier in the
	variants (vpn, recursive, and vpn-recusrive) accordingly. For		document. For example, if the opaque type is Generic LSP Identifier,
	example, the key for opaque-type-src is [R, S, G, rd, recur-R, recur-		then the type-specific-key will be a uint32 LSP-Id key. Please see
	RD], where basic type will specify (R, S,G,-, -, -), VPN type will		the complete model for all other types.
	specify (R, S,G, rd, -, -), recursive type will specify [R, S,G, -,
	recur-R, -] and VPN-recursive type will specify [R, S,G, -, recur-R,
	recur-rd].
	It is important to take note of the following:		It is important to take note of the following:
	o The address-family ipv4/ipv4 applies to "root" address in the mLDP		o The address-family ipv4/ipv4 applies to "root" address in the mLDP
	binding tree. The other addresses (source, group, RP etc) do not		binding tree. The other addresses (source, group, RP etc) do not
	have to be of the same address family type as the root.		have to be of the same address family type as the root.
	o The "recur-root-address" field applies to Recursive opaque type,		o The "recur-root-address" field applies to Recursive opaque type,
	and (recur-root-address, recur-rd) fields applies to VPN-Recursive		and (recur-root-address, recur-rd) fields applies to VPN-Recursive
	opaque types as defined in [RFC6512]		opaque types as defined in [RFC6512]
	skipping to change at page 17, line 23 ¶		skipping to change at page 21, line 27 ¶
	FEC (root 2.2.2.2, S=192.168.1.1, G=224.1.1.1):		FEC (root 2.2.2.2, S=192.168.1.1, G=224.1.1.1):
	type: p2mp		type: p2mp
	upstream:		upstream:
	advertised:		advertised:
	peer 192.168.0.1:0, label 16000 (local)		peer 192.168.0.1:0, label 16000 (local)
	downstream:		downstream:
	received:		received:
	peer 192.168.0.2:0, label 17000 (remote)		peer 192.168.0.2:0, label 17000 (remote)
	peer 192.168.0.3:0, label 18000 (remote)		peer 192.168.0.3:0, label 18000 (remote)
	Figure 7		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 2.2.2.2, RP=192.168.9.9, G=224.1.1.1):
	type: mp2mp		type: mp2mp
	upstream:		upstream:
	advertised:		advertised:
	peer 192.168.0.1:0, label 16000 (local)		peer 192.168.0.1:0, label 16000 (local)
	received:		received:
	peer 192.168.0.1:0, label 17000 (remote)		peer 192.168.0.1:0, label 17000 (remote)
	downstream:		downstream:
	advertised:		advertised:
	peer 192.168.0.2:0, label 16001 (local), MBB role=active		peer 192.168.0.2:0, label 16001 (local), MBB role=active
	peer 192.168.0.3:0, label 16002 (local), MBB role=standby		peer 192.168.0.3:0, label 16002 (local), MBB role=standby
	received:		received:
	peer 192.168.0.2:0, label 17001 (remote)		peer 192.168.0.2:0, label 17001 (remote)
	peer 192.168.0.3:0, label 18001 (remote)		peer 192.168.0.3:0, label 18001 (remote)
	Figure 8		Figure 11
	5.1.3. 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
	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. Following is a simplified		in the operational state of an mLDP FEC.
	graphical representation of the data model for mLDP notifications:
			6.1. Base
			Following is a simplified graphical representation of the base data
			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 tree-type? multipoint-type
	+--ro root? inet:ip-address		+--ro root? inet:ip-address
	+--ro (lsp-key-type)?		+--ro (lsp-key-type)?
	+--:(lsp-id-based)		+--:(lsp-id)
	| +--ro lsp-id? uint16		+--ro lsp-id? uint16
	+--:(source-group-based)
	+--ro source-address? inet:ip-address
	+--ro group-address? inet:ip-address
	Figure 9		Figure 12
			6.2. Extended
			Following is a simplified graphical representation of the extended
			data model for mLDP notifications:
			module: ietf-mpls-mldp
			augment /mldp:mpls-mldp-fec-event/mldp:lsp-key-type:
			+--:(source-group-based)
			+---- source-address? inet:ip-address
			+---- group-address? inet:ip-address
			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 Revisit and cut down on the scope of the document and number of
	features it is trying to cover
	o Split the model into a base and extended items
	o Align operational state modeling with other routing protocols and		o Align operational state modeling with other routing protocols and
	[I-D.openconfig-netmod-opstate]		[I-D.openconfig-netmod-opstate]
	o Specify default values for configuration parameters		o Specify default values for configuration parameters
	o Add statistics for mLDP root LSPs and bindings
	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
	9. YANG Specification		9. YANG Specification
	Following is the actual YANG definition for mLDP constructs defined		Following is the actual YANG definition (module) for mLDP constructs
	earlier in the document.		defined earlier in the document.
	<CODE BEGINS> file "ietf-mpls-mldp@2016-11-01.yang" -->		9.1. Base
	module ietf-mpls-mldp {		<CODE BEGINS> file "ietf-mpls-mldp@2017-03-12.yang"
	namespace "urn:ietf:params:xml:ns:yang:ietf-mpls-mldp";
	prefix mldp;
	import ietf-inet-types {		module ietf-mpls-mldp {
	prefix "inet";		namespace "urn:ietf:params:xml:ns:yang:ietf-mpls-mldp";
	}		prefix "mldp";
	import ietf-routing {		import ietf-inet-types {
	prefix "rt";		prefix "inet";
	}		}
	import ietf-mpls {		import ietf-routing {
	prefix "mpls";		prefix "rt";
	}		}
			import ietf-routing-types {
			prefix "rt-types";
			}
	import ietf-mpls-ldp {		import ietf-mpls-ldp {
	prefix "ldp";		prefix "ldp";
	}		}
	organization		organization
	"IETF MPLS Working Group";		"IETF MPLS Working Group";
	contact		contact
	"WG Web: <http://tools.ietf.org/wg/mpls/>		"WG Web: <http://tools.ietf.org/wg/teas/>
	WG List: <mailto:mpls@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
	<mailto:rcallon@juniper.net>		<mailto:rcallon@juniper.net>
	WG Chair: George Swallow		WG Chair: George Swallow
	<mailto:swallow.ietf@gmail.com>		<mailto:swallow.ietf@gmail.com>
	Editor: Kamran Raza		Editor: Kamran Raza
	<mailto:skraza@cisco.com>		<mailto:skraza@cisco.com>
	Editor: Rajiv Asati		Editor: Rajiv Asati
	<mailto:rajiva@cisco.com>		<mailto:rajiva@cisco.com>
	Editor: Xufeng Liu		Editor: Xufeng Liu
	<mailto:xliu@kuatrotech.com>		<mailto:Xufeng_Liu@jabil.com>
	Editor: Santosh Esale		Editor: Santosh Esale
	<mailto:sesale@juniper.net>		<mailto:sesale@juniper.net>
	Editor: Xia Chen		Editor: Xia Chen
	<mailto:jescia.chenxia@huawei.com>		<mailto:jescia.chenxia@huawei.com>
	Editor: Himanshu Shah		Editor: Himanshu Shah
	<mailto:hshah@ciena.com>		<mailto:hshah@ciena.com>";
	Editor: Sowmya Krishnaswamy		description
	<mailto:sowkrish@cisco.com>";		"This YANG module defines the essential components for the
			management of Multi-Protocol Label Switching (MPLS) Multipoint
			LDP (mLDP).";
	description		revision 2017-03-12 {
	"This YANG module defines the essential components for the		description
	management of Multi-Protocol Label Switching (MPLS) Multipoint		"Initial revision.";
	LDP (mLDP).";		reference
			"RFC XXXX: YANG Data Model for MPLS mLDP.";
			}
			/*
			* Typedefs
			*/
			typedef multipoint-type {
			type enumeration {
			enum p2mp {
			description "Point to multipoint.";
			}
			enum mp2mp {
			description "Multipoint to multipoint.";
			}
			}
			description
			"p2mp or mp2mp.";
			}
	revision 2016-11-01 {		/*
	description		* Groupings
	"Initial revision.";		*/
	reference
	"RFC XXXX: YANG Data Model for MPLS mLDP.";
	}
	/*		grouping mldp-capabilities {
	* Features		description
	*/		"mLDP capabilities.";
			container p2mp {
			description
			"Configure point-to-multipoint capability.";
			leaf enable {
			type boolean;
			description
			"Enable point-to-multipoint.";
			}
			}
			container mp2mp {
			description
			"Configure multipoint-to-multipoint capability.";
			leaf enable {
			type boolean;
			description
			"Enable multipoint-to-multipoint.";
			}
			}
			container make-before-break {
			description
			"Configure make-before-break capability.";
			leaf enable {
			type boolean;
			description
			"Enable make-before-break.";
	feature capability-mldp-hsmp {		}
	description		leaf switchover-delay {
	"This feature indicates that the system allows to configure		type uint16;
	mLDP hub-and-spoke-multipoint capability.";		units seconds;
	}		description
			"Switchover delay in seconds.";
			}
			leaf timeout {
			type uint16;
			units seconds;
			description
			"Timeout in seconds.";
			}
			}
			} // mldp-capabilities
	feature capability-mldp-node-protection {		grouping mldp-fec-event {
	description		description
	"This feature indicates that the system allows to configure		"A mLDP FEC event.";
	mLDP node-protection capability.";		leaf tree-type {
	}		type multipoint-type;
			description
			"p2mp or mp2mp.";
			}
			leaf root {
			type inet:ip-address;
			description
			"Root address.";
			}
			choice lsp-key-type {
			description
			"LSP ID based or source-group based .";
			case lsp-id {
			leaf lsp-id {
			type uint16;
			description
			"ID to identify the LSP.";
			}
			}
			}
			} // mldp-fec-event
	feature mldp {		grouping mldp-binding-label-peer-state-attributes {
	description		description
	"This feature indicates that the system supports Multicast		"mLDP label binding per peer attributes.";
	LDP (mLDP).";		leaf direction {
	}		type ldp:downstream-upstream;
			description
			"Downstream or upstream.";
			}
			leaf peer {
			type leafref {
			path
			"/rt:routing/rt:control-plane-protocols/"
			+ "ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:lsr-id";
			}
			description
			"LDP peer from which this binding is received,
			or to which this binding is advertised.";
			}
			leaf advertisement-type {
			type ldp:advertised-received;
			description
			"Advertised or received.";
			}
			leaf label {
			type rt-types:mpls-label;
			description
			"Advertised (outbound) or received (inbound) label.";
			}
			leaf mbb-role {
			when "../direction = 'upstream'" {
			description
			"For upstream.";
			}
			type enumeration {
			enum none {
			description "MBB is not enabled.";
			}
			enum active {
			description "This LSP is active.";
			}
			enum inactive {
			description "This LSP is inactive.";
			}
			}
			description
			"The MBB status of this LSP.";
			}
			} // mldp-binding-label-peer-state-attributes
	feature mldp-mofrr {		grouping mldp-binding-label-state-attributes {
	description		description
	"This feature indicates that the system supports mLDP		"mLDP label binding attributes.";
	Multicast only FRR (MoFRR).";
	}
	/*		leaf multipoint-type {
	* Typedefs		type multipoint-type;
	*/		description
	typedef multipoint-type {		"The type of mutipoint, p2mp or mp2mp.";
	type enumeration {		}
	enum p2mp {		list peer {
	description "Point to multipoint.";		key "direction peer advertisement-type";
	}		description
	enum mp2mp {		"List of advertised and received peers.";
	description "Multipoint to multipoint.";		uses mldp-binding-label-peer-state-attributes;
	}		} // peer
	}		} // mldp-binding-label-state-attributes
	description
	"p2mp or mp2mp.";
	}
	typedef route-distinguisher {		grouping mldp-ipv4-configured-lsp-roots {
	type string {		description
	}		"mLDP IPv4 roots containers.";
	description
	"Type definition for route distinguisher.";
	reference
	"RFC4364: BGP/MPLS IP Virtual Private Networks (VPNs).";
	}
	/*		container roots {
	* Groupings		description
	*/		"Configured IPv4 multicast LSPs.";
			list root {
			key "root-address";
			description
			"List of roots for configured multicast LSPs.";
	grouping mldp-capabilities {		leaf root-address {
	description		type inet:ipv4-address;
	"mLDP capabilities.";		description
			"Root address.";
			}
	container p2mp {		choice lsp-key-type {
	description		description
	"Configure point-to-multipoint capability.";		"LSP ID based or source-group based .";
	leaf enable {		case lsp-id {
	type boolean;		container opaque-type-lspid {
	description		description
	"Enable point-to-multipoint.";		"The type of opaque value element is
	}		the generic LSP identifier";
	}		list lsp {
	container mp2mp {		key "lsp-id";
	description		description
	"Configure multipoint-to-multipoint capability.";		"List of LSPs.";
	leaf enable {		leaf lsp-id {
	type boolean;		type uint16;
	description		description "ID to identify the LSP.";
	"Enable multipoint-to-multipoint.";		}
	}		} // list lsp
	}		} // opaque-type-lspid
	container make-before-break {
	description
	"Configure make-before-break capability.";
	leaf enable {
	type boolean;
	description
	"Enable make-before-break.";
	}
	leaf switchover-delay {
	type uint16;
	units seconds;
	description
	"Switchover delay in seconds.";
	}
	leaf timeout {
	type uint16;
	units seconds;
	description
	"Timeout in seconds.";
	}
	}
	container hub-and-spoke {
	if-feature capability-mldp-hsmp;
	description
	"Configure hub-and-spoke-multipoint capability.";
	reference
	"RFC7140: LDP Extensions for Hub and Spoke Multipoint
	Label Switched Path";
	leaf enable {
	type boolean;
	description
	"Enable hub-and-spoke-multipoint.";
	}
	}
	container node-protection {
	if-feature capability-mldp-node-protection;
	description
	"Configure node-protection capability.";
	reference
	"RFC7715: mLDP Node Protection.";
	leaf plr {
	type boolean;
	description
	"Point of Local Repair capable for MP LSP node
	protection.";
	}
	container merge-point {
	description
	"Merge Point capable for MP LSP node protection.";
	leaf enable {
	type boolean;
	description
	"Enable merge point capability.";
	}
	leaf targeted-session-teardown-delay {
	type uint16;
	units seconds;
	description
	"Targeted session teardown delay.";
	}
	} // merge-point
	}
	} // mldp-capabilities
	grouping mldp-configured-lsp-roots {		} // case lsp-id
	description		} // choice lsp-key-type
	"mLDP roots containers.";		} // list root
			} // roots
			} // mldp-ipv4-configured-lsp-roots
	container roots-ipv4 {		/*
			* Configuration data nodes
			*/
			augment "/rt:routing/rt:control-plane-protocols/"
			+ "ldp:mpls-ldp/ldp:global/ldp:config/ldp:capability" {
			description "Augmentation for MLDP global capability.";
			container mldp {
			description
			"Multipoint capabilities.";
			uses mldp-capabilities;
			}
			}
	when "../../../afi = 'ipv4'" {		/*
	description		* Operational state data nodes
	"Only for IPv4.";		*/
	}		augment "/rt:routing/rt:control-plane-protocols/"
	description		+ "ldp:mpls-ldp/ldp:global/ldp:state/ldp:capability" {
	"Configured IPv4 multicast LSPs.";		description "Augmentation for MLDP global capability.";
	list root {		container mldp {
	key "root-address";		description
	description		"Multipoint capabilities.";
	"List of roots for configured multicast LSPs.";		uses mldp-capabilities;
			}
			}
	leaf root-address {		augment "/rt:routing/rt:control-plane-protocols/"
	type inet:ipv4-address;		+ "ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:state/"
	description		+ "ldp:received-peer-state/ldp:capability" {
	"Root address.";		description
	}		"Augmentation for MLDP received peer state capability.";
			container mldp {
			description
			"Multipoint capabilities.";
	list lsp {		container p2mp {
	must "(lsp-id = 0 and source-address != '0.0.0.0' and "		description
	+ "group-address != '0.0.0.0') or "		"Configure point-to-multipoint capability.";
	+ "(lsp-id != 0 and source-address = '0.0.0.0' and "		leaf enable {
	+ "group-address = '0.0.0.0')" {		type boolean;
	description		description
	"A LSP can be identified by either <lsp-id> or		"Enable point-to-multipoint.";
	<source-address, group-address>.";
	}
	key "lsp-id source-address group-address";
	description
	"List of LSPs.";
	leaf lsp-id {
	type uint16;
	description "ID to identify the LSP.";
	}
	leaf source-address {
	type inet:ipv4-address;
	description
	"Source address.";
	}
	leaf group-address {
	type inet:ipv4-address-no-zone;
	description
	"Group address.";
	}
	} // list lsp
	} // list root
	} // roots-ipv4
	container roots-ipv6 {		}
			}
			container mp2mp {
			description
			"Configure multipoint-to-multipoint capability.";
			leaf enable {
			type boolean;
			description
			"Enable multipoint-to-multipoint.";
			}
			}
			container make-before-break {
			description
			"Configure make-before-break capability.";
			leaf enable {
			type boolean;
			description
			"Enable make-before-break.";
			}
			}
			} // mldp
			}
	when "../../../afi = 'ipv6'" {		/*
	description		* Global augmentation
	"Only for IPv6.";		*/
	}		augment "/rt:routing/rt:control-plane-protocols/"
	description		+ "ldp:mpls-ldp/ldp:global" {
	"Configured IPv6 multicast LSPs.";		description "MLDP global augmentation.";
			container mldp {
			description
			"mLDP attributes at per instance level. Defining
			attributes here does not enable any MP capabilities.
			MP capabilities need to be explicitly enabled under
			container capability.";
	list root {		container config {
	key "root-address";		description
	description		"Configuration data.";
	"List of roots for configured multicast LSPs.";		leaf enable {
			type boolean;
			description
			"Enable mLDP.";
			}
			}
			container state {
			config false;
			description
			"Operational state data.";
			leaf enable {
			type boolean;
			description
			"Enable mLDP.";
			}
			}
	leaf root-address {		container address-families {
	type inet:ipv6-address;		description
	description		"Per-af params.";
	"Root address.";
	}
	list lsp {		container ipv4 {
	must "(lsp-id = 0 and source-address != '::' and "		description
	+ "group-address != '::') or "		"IPv4 information.";
	+ "(lsp-id != 0 and source-address = '::' and "		container state {
	+ "group-address = '::')" {		config false;
	description		description
	"A LSP can be identified by either <lsp-id> or		"Operational state data.";
	<source-address, group-address>.";
	}
	key "lsp-id source-address group-address";
	description
	"List of LSPs.";
	leaf lsp-id {
	type uint16;
	description "ID to identify the LSP.";
	}
	leaf source-address {
	type inet:ipv6-address;
	description
	"Source address.";
	}
	leaf group-address {
	type inet:ipv6-address-no-zone;
	description
	"Group address.";
	}
	} // list lsp
	} // list root
	} // roots-ipv6
	} // mldp-configured-lsp-roots
	grouping mldp-fec-event {		container roots {
	description		description
	"A mLDP FEC event.";		"IPv4 multicast LSP roots.";
	leaf tree-type {		list root {
	type multipoint-type;		key "root-address";
	description		description
	"p2mp or mp2mp.";		"List of roots for configured multicast LSPs.";
	}
	leaf root {
	type inet:ip-address;
	description
	"Root address.";
	}
	choice lsp-key-type {
	description
	"LSP ID based or source-group based .";
	case lsp-id-based {
	leaf lsp-id {
	type uint16;
	description
	"ID to identify the LSP.";
	}
	}
	case source-group-based {
	leaf source-address {
	type inet:ip-address;
	description
	"LSP source address.";		leaf root-address {
	}		type inet:ipv4-address;
	leaf group-address {		description
	type inet:ip-address;		"Root address.";
	description		}
	"Multicast group address.";
	}
	} // case source-group-based
	}
	} // mldp-fec-event
	grouping mldp-binding-label-state-attributes {		leaf is-self {
	description		type boolean;
	"mLDP label binding attributes.";		description
			"This is the root.";
			}
	leaf multipoint-type {		list reachability {
	type multipoint-type;		key "address interface";
	description		description
	"The type of mutipoint, p2mp or mp2mp.";		"A next hop for reachability to root,
	}		as a RIB view.";
	list peer {		leaf address {
	key "direction peer advertisement-type";		type inet:ipv4-address;
	description		description
	"List of advertised and received peers.";		"The next hop address to reach root.";
	leaf direction {		}
	type ldp:downstream-upstream;		leaf interface {
	description		type ldp:mpls-interface-ref;
	"Downstream or upstream.";		description
	}		"Interface connecting to next-hop.";
	leaf peer {		}
	type leafref {		leaf peer {
	path		type leafref {
	"../../../../../../../../../../ldp:peers/ldp:peer/ldp:lsr-id";		path
	}		"../../../../../../../../../ldp:peers/"
	description		+ "ldp:peer/ldp:lsr-id";
	"LDP peer from which this binding is received,		}
	or to which this binding is advertised.";		description
	}		"LDP peer from which this next hop can be
	leaf advertisement-type {		reached.";
	type ldp:advertised-received;		}
	description		}
	"Advertised or received.";
	}
	leaf label {
	type mpls:mpls-label;
	description
	"Advertised (outbound) or received (inbound) label.";
	}
	leaf mbb-role {
	when "../direction = 'upstream'" {
	description
	"For upstream.";
	}
	type enumeration {
	enum none {
	description "MBB is not enabled.";
	}
	enum active {
	description "This LSP is active.";
	}
	enum inactive {
	description "This LSP is inactive.";
	}
	}
	description
	"The MBB status of this LSP.";
	}
	leaf mofrr-role {
	when "../direction = 'upstream'" {
	description
	"For upstream.";
	}
	type enumeration {
	enum none {
	description "MOFRR is not enabled.";
	}
	enum primary {
	description "This LSP is primary.";
	}
	enum backup {
	description "This LSP is backup.";
	}
	}
	description
	"The MOFRR status of this LSP.";
	}
	} // peer
	} // mldp-binding-label-state-attributes
	/*		container bindings {
	* Configuration data nodes		description
	*/		"mLDP FEC to label bindings.";
	augment "/rt:routing/rt:control-plane-protocols/"		container opaque-type-lspid {
	+ "ldp:mpls-ldp/ldp:global/ldp:config/ldp:capability" {		description
	description "Augmentation for MLDP global capability.";		"The type of opaque value element is
	container mldp {		the generic LSP identifier";
	description		reference
	"Multipoint capabilities.";		"RFC6388: Label Distribution Protocol
	uses mldp-capabilities;		Extensions for Point-to-Multipoint and
	}		Multipoint-to-Multipoint Label Switched
	}		Paths.";
			list fec-label {
			key
			"lsp-id";
			description
			"List of FEC to label bindings.";
			leaf lsp-id {
			type uint32;
			description "ID to identify the LSP.";
			}
			uses mldp-binding-label-state-attributes;
			} // fec-label
			} // opaque-type-lspid
			} // bindings
			} // list root
			} // roots
			} // state
			container configured-leaf-lsps {
			description
			"Configured multicast LSPs.";
	augment "/rt:routing/rt:control-plane-protocols/"		container p2mp {
	+ "ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:config/ldp:capability" {		description
	description "Augmentation for MLDP peer capability.";		"Configured point-to-multipoint LSPs.";
	container mldp {		uses mldp-ipv4-configured-lsp-roots;
	if-feature mldp;		}
	description		container mp2mp {
	"mLDP capabilities.";		description
	uses mldp-capabilities;		"Configured multipoint-to-multipoint LSPs.";
	}		uses mldp-ipv4-configured-lsp-roots;
	}		}
			} // configured-leaf-lsps
			} // ipv4
			} // list address-family
			} // mldp
			}
	augment "/rt:routing/rt:control-plane-protocols/"		/*
	+ "ldp:mpls-ldp/ldp:global/ldp:forwarding-nexthop/"		* Notifications
	+ "ldp:interfaces/ldp:interface/ldp:address-family/"		*/
	+ "ldp:config" {		notification mpls-mldp-fec-event {
	description		description
	"Augmentation for MLDP nexthop forwarding interface.";		"Notification event for a change of FEC status.";
	leaf mldp-disable {		leaf event-type {
	if-feature mldp;		type ldp:oper-status-event-type;
	type boolean;		description "Event type.";
	description		}
	"Disable mLDP forwarding on the interface.";		uses mldp-fec-event;
	}		}
	}		}
	/*		<CODE ENDS>
	* Operational state data nodes
	*/
	augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global/ldp:state/ldp:capability" {
	description "Augmentation for MLDP global capability.";
	container mldp {
	description
	"Multipoint capabilities.";
	uses mldp-capabilities;
	}
	}
	augment "/rt:routing/rt:control-plane-protocols/"		Figure 14
	+ "ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:state/ldp:capability" {
	description "Augmentation for MLDP peer capability.";
	container mldp {
	if-feature mldp;
	description
	"mLDP capabilities.";
	uses mldp-capabilities;
	}
	}
	augment "/rt:routing/rt:control-plane-protocols/"		9.2. Extended
	+ "ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:state/"
	+ "ldp:received-peer-state/ldp:capability" {
	description
	"Augmentation for MLDP received peer state capability.";
	container mldp {
	if-feature mldp;
	description
	"Multipoint capabilities.";
	container p2mp {		<CODE BEGINS> file "ietf-mpls-mldp-extended@2017-03-12.yang"
	description
	"Configure point-to-multipoint capability.";
	leaf enable {
	type boolean;
	description
	"Enable point-to-multipoint.";
	}
	}		module ietf-mpls-mldp-extended {
	container mp2mp {		namespace "urn:ietf:params:xml:ns:yang:ietf-mpls-mldp-extended";
	description		prefix "mldp-ext";
	"Configure multipoint-to-multipoint capability.";		import ietf-inet-types {
	leaf enable {		prefix "inet";
	type boolean;		}
	description
	"Enable multipoint-to-multipoint.";
	}
	}
	container make-before-break {
	description
	"Configure make-before-break capability.";
	leaf enable {
	type boolean;
	description
	"Enable make-before-break.";
	}
	}
	container hub-and-spoke {
	description
	"Configure hub-and-spoke-multipoint capability.";
	reference
	"RFC7140: LDP Extensions for Hub and Spoke Multipoint
	Label Switched Path";
	leaf enable {
	type boolean;
	description
	"Enable hub-and-spoke-multipoint.";
	}
	}
	container node-protection {
	description
	"Configure node-protection capability.";
	reference
	"RFC7715: mLDP Node Protection.";
	leaf plr {
	type boolean;
	description
	"Point of Local Repair capable for MP LSP node
	protection.";
	}
	leaf merge-point {
	type boolean;
	description
	"Merge Point capable for MP LSP node protection.";
	} // merge-point
	} // node-protection
	} // mldp		import ietf-routing {
	}		prefix "rt";
			}
	augment "/rt:routing/rt:control-plane-protocols/"		import ietf-mpls-ldp {
	+ "ldp:mpls-ldp/ldp:global/ldp:forwarding-nexthop/"		prefix "ldp";
	+ "ldp:interfaces/ldp:interface/ldp:address-family/"		}
	+ "ldp:state" {		import ietf-mpls-ldp-extended {
	description		prefix "ldp-ext";
	"Augmentation for MLDP nexthop forwarding interface.";		}
	leaf mldp-disable {
	if-feature mldp;
	type boolean;
	description
	"Disable mLDP forwarding on the interface.";
	}
	}
	/*		import ietf-mpls-mldp {
	* Global augmentation		prefix "mldp";
	*/		}
	augment "/rt:routing/rt:control-plane-protocols/"
	+ "ldp:mpls-ldp/ldp:global" {
	description "MLDP global augmentation.";
	container mldp {
	if-feature mldp;
	description
	"mLDP attributes at per instance level. Defining
	attributes here does not enable any MP capabilities.
	MP capabilities need to be explicitly enabled under
	container capability.";
	container config {		organization
	description		"IETF MPLS Working Group";
	"Configuration data.";		contact
	leaf enable {		"WG Web: <http://tools.ietf.org/wg/teas/>
	type boolean;		WG List: <mailto:teas@ietf.org>
	description
	"Enable mLDP.";
	}
	}
	container state {
	config false;
	description
	"Operational state data.";		WG Chair: Loa Andersson
	leaf enable {		<mailto:loa@pi.nu>
	type boolean;
	description
	"Enable mLDP.";
	}
	}
	list address-family {		WG Chair: Ross Callon
	key "afi";		<mailto:rcallon@juniper.net>
	description
	"Per-af params.";
	leaf afi {
	type ldp:ldp-address-family;
	description
	"Address family type value.";
	}
	container config {		WG Chair: George Swallow
	description		<mailto:swallow.ietf@gmail.com>
	"Configuration data.";
	container multicast-only-frr {
	if-feature mldp-mofrr;
	description
	"Multicast only FRR (MoFRR) policy.";
	leaf prefix-list {
	type ldp:prefix-list-ref;
	description
	"Enables MoFRR for the specified access list.";
	}
	} // multicast-only-frr
	container recursive-fec {
	description
	"Recursive FEC policy.";
	leaf prefix-list {
	type ldp:prefix-list-ref;
	description
	"Enables recursive FEC for the specified access
	list.";
	}
	} // recursive-for
	}
	container state {
	config false;
	description
	"Operational state data.";
	container multicast-only-frr {
	if-feature mldp-mofrr;
	description		Editor: Kamran Raza
	"Multicast only FRR (MoFRR) policy.";		<mailto:skraza@cisco.com>
	leaf prefix-list {		Editor: Rajiv Asati
	type ldp:prefix-list-ref;		<mailto:rajiva@cisco.com>
	description
	"Enables MoFRR for the specified access list.";
	}
	} // multicast-only-frr
	container recursive-fec {
	description
	"Recursive FEC policy.";
	leaf prefix-list {
	type ldp:prefix-list-ref;
	description
	"Enables recursive FEC for the specified access
	list.";
	}
	} // recursive-fec
	container ipv4 {		Editor: Xufeng Liu
	when "../../afi = 'ipv4'" {		<mailto:Xufeng_Liu@jabil.com>
	description
	"Only for IPv4.";
	}
	description
	"IPv4 state information.";
	container roots {
	description
	"IPv4 multicast LSP roots.";
	list root {
	key "root-address";
	description
	"List of roots for configured multicast LSPs.";
	leaf root-address {		Editor: Santosh Esale
	type inet:ipv4-address;		<mailto:sesale@juniper.net>
	description
	"Root address.";
	}
	leaf is-self {		Editor: Xia Chen
	type boolean;		<mailto:jescia.chenxia@huawei.com>
	description
	"This is the root.";
	}
	list reachability {		Editor: Himanshu Shah
	key "address interface";		<mailto:hshah@ciena.com>";
	description
	"A next hop for reachability to root,
	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.";
	}
	}
	} // list root
	} // roots
	container bindings {
	description
	"mLDP FEC to label bindings.";
	container opaque-type-lspid {
	description
	"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.";
	list fec-label {
	key
	"root-address lsp-id "
	+ "recur-root-address recur-rd";
	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 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";
	}
	uses mldp-binding-label-state-attributes;
	} // fec-label
	} // opaque-type-lspid
	container opaque-type-transit {		description
	description		"This YANG module defines the essential components for the
	"The type of opaque value element is		management of Multi-Protocol Label Switching (MPLS) Multipoint
	the generic LSP identifier";		LDP (mLDP).";
	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:ipv4-address;
	description
	"Root address.";
	}
	leaf source-address {
	type inet:ip-address;
	description
	"Source address.";
	}		revision 2017-03-12 {
	leaf group-address {		description
	type inet:ip-address-no-zone;		"Initial revision.";
	description		reference
	"Group address.";		"RFC XXXX: YANG Data Model for MPLS mLDP.";
	}		}
	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.";
	}
	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";
	}
	uses mldp-binding-label-state-attributes;
	} // fec-label
	} // opaque-type-transit
	container opaque-type-bidir {		/*
	description		* Features
	"The type of opaque value element is		*/
	the generic LSP identifier";		feature capability-mldp-hsmp {
	reference		description
	"RFC6826: Multipoint LDP In-Band Signaling for		"This feature indicates that the system allows to configure
	Point-to-Multipoint and		mLDP hub-and-spoke-multipoint capability.";
	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.";
	}
	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";
	}
	uses mldp-binding-label-state-attributes;
	} // fec-label
	} // opaque-type-bidir		feature capability-mldp-node-protection {
	} // bindings		description
	} // ipv4		"This feature indicates that the system allows to configure
			mLDP node-protection capability.";
			}
	container ipv6 {		feature mldp-mofrr {
	when "../../afi = 'ipv6'" {		description
	description		"This feature indicates that the system supports mLDP
	"Only for IPv6.";		Multicast only FRR (MoFRR).";
	}		}
	description
	"IPv6 state information.";
	container roots {
	description
	"IPv6 multicast LSP roots.";
	list root {
	key "root-address";
	description
	"List of roots for configured multicast LSPs.";
	leaf root-address {		feature per-peer-capability {
	type inet:ipv6-address;		description
	description		"This feature indicates that the system allows to configure
	"Root address.";		mLDP capabilities at the per peer level.";
	}		}
	leaf is-self {		/*
	type boolean;		* Typedefs
	description		*/
	"This is the root.";		typedef route-distinguisher {
	}		type string {
			}
			description
			"Type definition for route distinguisher.";
			reference
			"RFC4364: BGP/MPLS IP Virtual Private Networks (VPNs).";
			}
	list reachability {		typedef mofrr-role {
	key "address interface";		type enumeration {
	description		enum none {
	"A next hop for reachability to root,		description "MOFRR is not enabled.";
	as a RIB view.";		}
	leaf address {		enum primary {
	type inet:ipv6-address;		description "This LSP is primary.";
	description		}
	"The next hop address to reach root.";		enum backup {
	}		description "This LSP is backup.";
	leaf interface {		}
	type ldp:mpls-interface-ref;		}
	description		description
	"Interface connecting to next-hop.";		"This type represents the MOFRR (Multicast only FRR) role
	}		status of a LSP.";
	leaf peer {		}
	type leafref {
	path
	"../../../../../../../../../ldp:peers/"
	+ "ldp:peer/ldp:lsr-id";
	}
	description
	"LDP peer from which this next hop can be
	reached.";
	}
	}
	} // list root
	} // roots
	container bindings {
	description
	"mLDP FEC to label bindings.";
	container opaque-type-lspid {
	description
	"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.";
	list fec-label {
	key
	"root-address lsp-id "
	+ "recur-root-address recur-rd";
	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 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";
	}
	uses mldp-binding-label-state-attributes;
	} // fec-label
	} // opaque-type-lspid
	container opaque-type-transit {		/*
	description		* Groupings
	"The type of opaque value element is		*/
	the generic LSP identifier";		grouping mldp-ext-binding-label-state-attributes {
	reference		description
	"RFC6826: Multipoint LDP In-Band Signaling for		"mLDP label binding attributes.";
	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.";
	}
	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";
	}
	uses mldp-binding-label-state-attributes;
	} // fec-label
	} // opaque-type-transit
	container opaque-type-bidir {		leaf multipoint-type {
	description		type mldp:multipoint-type;
	"The type of opaque value element is		description
	the generic LSP identifier";		"The type of mutipoint, p2mp or mp2mp.";
	reference		}
	"RFC6826: Multipoint LDP In-Band Signaling for		list peer {
	Point-to-Multipoint and		key "direction peer advertisement-type";
	Multipoint-to-Multipoint Label Switched		description
	Paths.";		"List of advertised and received peers.";
	list fec-label {		uses mldp:mldp-binding-label-peer-state-attributes;
	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 mofrr-role {
	leaf group-address {		when "../direction = 'upstream'" {
	type inet:ip-address-no-zone;		description
	description		"For upstream.";
	"Group address.";		}
	}		type mofrr-role;
	leaf rd {		description
	type route-distinguisher;		"The MOFRR status of this LSP.";
	description		}
	"Route Distinguisher.";		} // peer
	reference		} // mldp-ext-binding-label-state-attributes
	"RFC7246: Multipoint Label Distribution
	Protocol In-Band Signaling in a Virtual
	Routing and Forwarding (VRF) Table
	Context.";
	}
	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";
	}
	uses mldp-binding-label-state-attributes;
	} // fec-label
	} // opaque-type-bidir
	} // bindings
	} // ipv6
	} // state
	container configured-leaf-lsps {		grouping mldp-ext-capabilities {
	description		description
	"Configured multicast LSPs.";		"mLDP extended capabilities.";
			container hub-and-spoke {
			if-feature capability-mldp-hsmp;
			description
			"Configure hub-and-spoke-multipoint capability.";
			reference
			"RFC7140: LDP Extensions for Hub and Spoke Multipoint
			Label Switched Path";
			leaf enable {
			type boolean;
			description
			"Enable hub-and-spoke-multipoint.";
			}
			}
			container node-protection {
			if-feature capability-mldp-node-protection;
			description
			"Configure node-protection capability.";
			reference
			"RFC7715: mLDP Node Protection.";
			leaf plr {
			type boolean;
			description
			"Point of Local Repair capable for MP LSP node
			protection.";
			}
			container merge-point {
			description
			"Merge Point capable for MP LSP node protection.";
			leaf enable {
			type boolean;
			description
			"Enable merge point capability.";
			}
			leaf targeted-session-teardown-delay {
			type uint16;
			units seconds;
			description
			"Targeted session teardown delay.";
	container p2mp {		}
	description		} // merge-point
	"Configured point-to-multipoint LSPs.";		}
	uses mldp-configured-lsp-roots;		} // mldp-ext-capabilities
	}		grouping mldp-ipv6-configured-lsp-roots {
	container mp2mp {		description
	description		"mLDP IPv6 roots containers.";
	"Configured multipoint-to-multipoint LSPs.";
	uses mldp-configured-lsp-roots;
	}
	} // configured-leaf-lsps
	} // list address-family
	} // mldp
	}
	/*		container roots {
	* Notifications		description
	*/		"Configured IPv6 multicast LSPs.";
	notification mpls-mldp-fec-event {
	description
	"Notification event for a change of FEC status.";
	leaf event-type {
	type ldp:oper-status-event-type;
	description "Event type.";
	}
	uses mldp-fec-event;
	}
	}
	<CODE ENDS>		list root {
			key "root-address";
			description
			"List of roots for configured multicast LSPs.";
	Figure 10		leaf root-address {
			type inet:ipv6-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
			case source-group {
			container opaque-type-transit {
			description
			"The type of opaque value element is the transit IPv6
			source.";
			list lsp {
			key "source-address group-address";
			description
			"List of LSPs.";
			leaf source-address {
			type inet:ipv6-address;
			description
			"Source address.";
			}
			leaf group-address {
			type inet:ipv6-address-no-zone;
			description
			"Group address.";
			}
			}
			}
			} // case source-group
			} // choice lsp-key-type
			} // list root
			} // roots
			} // mldp-ipv6-configured-lsp-roots
			grouping mldp-ext-per-af-config-attibutes {
			description
			"mLDP per address family configuration attibutes.";
			container multicast-only-frr {
			if-feature mldp-mofrr;
			description
			"Multicast only FRR (MoFRR) policy.";
			leaf prefix-list {
			type ldp-ext:prefix-list-ref;
			description
			"Enables MoFRR for the specified access list.";
			}
			} // multicast-only-frr
			container recursive-fec {
			description
			"Recursive FEC policy.";
			leaf prefix-list {
			type ldp-ext:prefix-list-ref;
			description
			"Enables recursive FEC for the specified access list.";
			}
			} // recursive-for
			} // mldp-ext-per-af-config-attibutes
			/*
			* Configuration data nodes
			*/
			// Global capability config
			augment "/rt:routing/rt:control-plane-protocols/"
			+ "ldp:mpls-ldp/ldp:global/ldp:config/ldp:capability/"
			+ "mldp:mldp" {
			description "Augmentation for MLDP global capability.";
			uses mldp-ext-capabilities;
			}
			// Peer capability config
			augment "/rt:routing/rt:control-plane-protocols/"
			+ "ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:config/ldp:capability" {
			description "Augmentation for MLDP peer capability.";
			container mldp {
			if-feature per-peer-capability;
			description
			"mLDP capabilities.";
			uses mldp:mldp-capabilities;
			}
			}
			// IPv4 config
			augment "/rt:routing/rt:control-plane-protocols/"
			+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"
			+ "mldp:ipv4" {
			description "Augmentation for MLDP IPv4 configuration.";
			container config {
			description
			"Configuration data.";
			uses mldp-ext-per-af-config-attibutes;
			}
			}
			// IPv4 configured-leaf-lsps config
			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" {
			description
			"Augmentation for MLDP IPv4 configured-leaf-lsps
			configuration.";
			case source-group {
			container opaque-type-transit {
			description
			"The type of opaque value element is the transit IPv4
			source.";
			list lsp {
			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/"
			+ "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" {
			description
			"Augmentation for MLDP IPv4 configured-leaf-lsps
			configuration.";
			case source-group {
			container opaque-type-transit {
			description
			"The type of opaque value element is the transit IPv4
			source.";
			list lsp {
			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
			}
			// IPv6 config
			augment "/rt:routing/rt:control-plane-protocols/"
			+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"
			+ "ipv6" {
			description "Augmentation for MLDP IPv4 configuration.";
			container config {
			description
			"Configuration data.";
			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:config" {
			description
			"Augmentation for MLDP nexthop forwarding interface.";
			leaf mldp-disable {
			type boolean;
			description
			"Disable mLDP forwarding on the interface.";
			}
			}
			/*
			* 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
			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" {
			description "Augmentation for MLDP IPv4 state.";
			leaf mofrr-role {
			when "../mldp:direction = 'upstream'" {
			description
			"For upstream.";
			}
			type mofrr-role;
			description
			"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
			augment "/rt:routing/rt:control-plane-protocols/"
			+ "ldp:mpls-ldp/ldp:peers/ldp:peer/ldp:state/"
			+ "ldp:received-peer-state/ldp:capability/mldp:mldp" {
			description
			"Augmentation for MLDP received peer state capability.";
			container hub-and-spoke {
			description
			"Configure hub-and-spoke-multipoint capability.";
			reference
			"RFC7140: LDP Extensions for Hub and Spoke Multipoint
			Label Switched Path";
			leaf enable {
			type boolean;
			description
			"Enable hub-and-spoke-multipoint.";
			}
			}
			container node-protection {
			description
			"Configure node-protection capability.";
			reference
			"RFC7715: mLDP Node Protection.";
			leaf plr {
			type boolean;
			description
			"Point of Local Repair capable for MP LSP node
			protection.";
			}
			leaf merge-point {
			type boolean;
			description
			"Merge Point capable for MP LSP node protection.";
			} // merge-point
			} // node-protection
			}
			// IPv4 bindings state
			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" {
			description "Augmentation for MLDP IPv4 bindings.";
			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
			"source-address group-address "
			+ "rd recur-root-address recur-rd";
			description
			"List of FEC to label bindings.";
			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.";
			}
			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";
			}
			uses mldp-ext-binding-label-state-attributes;
			} // 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
			"rp group-address rd recur-root-address recur-rd";
			description
			"List of FEC to label bindings.";
			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.";
			}
			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";
			}
			uses mldp-ext-binding-label-state-attributes;
			} // fec-label
			} // opaque-type-bidir
			}
			// IPv6 bindings state
			augment "/rt:routing/rt:control-plane-protocols/"
			+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"
			+ "ipv6/state/roots/root/bindings" {
			description "Augmentation for MLDP IPv6 bindings.";
			container opaque-type-transit {
			config false;
			description
			"The type of opaque value element is the transit IPv6
			source.";
			reference
			"RFC6826: Multipoint LDP In-Band Signaling for
			Point-to-Multipoint and
			Multipoint-to-Multipoint Label Switched
			Paths.";
			list fec-label {
			key
			"source-address group-address "
			+ "rd recur-root-address recur-rd";
			description
			"List of FEC to label bindings.";
			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.";
			}
			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";
			}
			uses mldp-ext-binding-label-state-attributes;
			} // fec-label
			} // opaque-type-transit
			container opaque-type-bidir {
			config false;
			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
			"rp group-address rd recur-root-address recur-rd";
			description
			"List of FEC to label bindings.";
			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.";
			}
			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";
			}
			uses mldp-ext-binding-label-state-attributes;
			} // fec-label
			} // opaque-type-bidir
			}
			// IPv4 bindings opaque-type-lspid state
			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" {
			description
			"Augmentation for MLDP IPv4 bindings with opaque type LSP ID.";
			list recursive-fec {
			key
			"recur-root-address recur-rd";
			description
			"List of recursive opaque values.";
			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";
			}
			uses mldp-ext-binding-label-state-attributes;
			} // fec-label
			}
			// IPv6 bindings opaque-type-lspid state
			augment "/rt:routing/rt:control-plane-protocols/"
			+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families/"
			+ "ipv6/state/roots/root/bindings/opaque-type-lspid/"
			+ "fec-label" {
			description
			"Augmentation for MLDP IPv6 bindings with opaque type LSP ID.";
			list recursive-fec {
			key
			"recur-root-address recur-rd";
			config false;
			description
			"List of recursive opaque values.";
			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";
			}
			uses mldp-ext-binding-label-state-attributes;
			} // fec-label
			}
			/*
			* Per AF augmentation
			*/
			// IPv6 augmentation
			augment "/rt:routing/rt:control-plane-protocols/"
			+ "ldp:mpls-ldp/ldp:global/mldp:mldp/mldp:address-families" {
			description "Augmentation for MLDP IPv6 address family.";
			container ipv6 {
			description
			"IPv6 information.";
			container state {
			config false;
			description
			"Operational state data.";
			container roots {
			description
			"IPv6 multicast LSP roots.";
			list root {
			key "root-address";
			description
			"List of roots for configured multicast LSPs.";
			leaf root-address {
			type inet:ipv6-address;
			description
			"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;
			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.";
			}
			}
			container bindings {
			description
			"mLDP FEC to label bindings.";
			container opaque-type-lspid {
			description
			"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.";
			list fec-label {
			key
			"lsp-id";
			description
			"List of FEC to label bindings.";
			leaf lsp-id {
			type uint32;
			description "ID to identify the LSP.";
			}
			uses mldp-ext-binding-label-state-attributes;
			} // fec-label
			} // opaque-type-lspid
			} // bindings
			} // list root
			} // roots
			} // state
			container configured-leaf-lsps {
			description
			"Configured multicast LSPs.";
			container p2mp {
			description
			"Configured point-to-multipoint LSPs.";
			uses mldp-ipv6-configured-lsp-roots;
			}
			container mp2mp {
			description
			"Configured multipoint-to-multipoint LSPs.";
			uses mldp-ipv6-configured-lsp-roots;
			}
			} // configured-leaf-lsps
			} // ipv6
			}
			/*
			* Global augmentation
			*/
			/*
			* Notifications
			*/
			augment "/mldp:mpls-mldp-fec-event/mldp:lsp-key-type" {
			description "";
			case source-group-based {
			leaf source-address {
			type inet:ip-address;
			description
			"LSP source address.";
			}
			leaf group-address {
			type inet:ip-address;
			description
			"Multicast group address.";
			}
			} // case source-group
			}
			}
			<CODE ENDS>
			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-mldp-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
	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. References
	13.1. Normative References		13.1. Normative References
	[I-D.ietf-mpls-ldp-mldp-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 and mLDP", draft-ietf-		Shah, "YANG Data Model for MPLS LDP", draft-ietf-mpls-ldp-
	mpls-ldp-mldp-yang-00 (work in progress), August 2016.		yang-00 (work in progress), November 2016.
	[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>.		<http://www.rfc-editor.org/info/rfc2119>.
	[RFC5036] Andersson, L., Ed., Minei, I., Ed., and B. Thomas, Ed.,		[RFC5036] Andersson, L., Ed., Minei, I., Ed., and B. Thomas, Ed.,
	"LDP Specification", RFC 5036, DOI 10.17487/RFC5036,		"LDP Specification", RFC 5036, DOI 10.17487/RFC5036,
	October 2007, <http://www.rfc-editor.org/info/rfc5036>.		October 2007, <http://www.rfc-editor.org/info/rfc5036>.
	skipping to change at page 46, line 23 ¶		skipping to change at page 56, line 35 ¶
	Topology Routing", draft-iwijnand-mpls-mldp-multi-		Topology Routing", draft-iwijnand-mpls-mldp-multi-
	topology-03 (work in progress), June 2013.		topology-03 (work in progress), June 2013.
	[I-D.openconfig-netmod-opstate]		[I-D.openconfig-netmod-opstate]
	Shakir, R., Shaikh, A., and M. Hines, "Consistent Modeling		Shakir, R., Shaikh, A., and M. Hines, "Consistent Modeling
	of Operational State Data in YANG", draft-openconfig-		of Operational State Data in YANG", draft-openconfig-
	netmod-opstate-01 (work in progress), July 2015.		netmod-opstate-01 (work in progress), July 2015.
	Appendix A. Additional Contributors		Appendix A. Additional Contributors
	Danial Johari
	Cisco Systems Inc.
	Email: dajohari@cisco.com
	Matthew Bocci		Matthew Bocci
	Alcatel-Lucent		Nokia
	matthew.bocci@alcatel-lucent.com		matthew.bocci@nokia.com
	Authors' Addresses		Authors' Addresses
	Kamran Raza		Kamran Raza
	Cisco Systems, Inc.		Cisco Systems, Inc.
	Email: skraza@cisco.com		Email: skraza@cisco.com
	Rajiv Asati		Rajiv Asati
	Cisco Systems, Inc.		Cisco Systems, Inc.
	Email: rajiva@cisco.com		Email: rajiva@cisco.com
	skipping to change at page 46, line 40 ¶		skipping to change at page 57, line 4 ¶
	Authors' Addresses		Authors' Addresses
	Kamran Raza		Kamran Raza
	Cisco Systems, Inc.		Cisco Systems, Inc.
	Email: skraza@cisco.com		Email: skraza@cisco.com
	Rajiv Asati		Rajiv Asati
	Cisco Systems, Inc.		Cisco Systems, Inc.
	Email: rajiva@cisco.com		Email: rajiva@cisco.com
	Sowmya Krishnaswamy		Sowmya Krishnaswamy
	Cisco Systems, Inc.		Cisco Systems, Inc.
	Email: sowkrish@cisco.com		Email: sowkrish@cisco.com
	Xufeng Liu		Xufeng Liu
	Kuatro Technologies		Jabil
	Email: xliu@kuatrotech.com		Email: xufeng_liu@jabil.com
	Jeff Tantsura		Jeff Tantsura
	Email: jefftant@gmail.com		Email: jefftant.ietf@gmail.com
	Santosh Esale		Santosh Esale
	Juniper Networks		Juniper Networks
	Email: sesale@juniper.net		Email: sesale@juniper.net
	Xia Chen		Xia Chen
	Huawei Technologies		Huawei Technologies
	Email: jescia.chenxia@huawei.com		Email: jescia.chenxia@huawei.com
	Loa Andersson		Loa Andersson
End of changes. 169 change blocks.
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