Internet DRAFT - draft-raza-spring-srv6-yang
draft-raza-spring-srv6-yang
SPRING Working Group K. Raza
Internet-Draft S. Agarwal
Intended status: Standards Track Cisco Systems
Expires: January 14, 2021
X. Liu
Volta Networks
Z. Hu
Huawei Technologies
I. Hussain
Infinera Corporation
H. Shah
Ciena Corporation
D. Voyer
Bell Canada
S. Matsushima
K. Horiba
SoftBank
H. Elmalky
A. AbdelSalam
J. Rajamanickam
Cisco Systems
July 13, 2020
YANG Data Model for SRv6 Base and Static
draft-raza-spring-srv6-yang-06
Abstract
This document describes a YANG data model for Segment Routing IPv6
(SRv6) base. The model serves as a base framework for configuring
and managing an SRv6 subsystem and expected to be augmented by other
SRv6 technology models accordingly. Additionally, this document also
specifies the model for the SRv6 Static application.
The YANG modules in this document conform to the Network Management
Datastore Architecture (NMDA).
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Raza, et al. Expires January 14, 2021 [Page 1]
Internet-Draft YANG Data Model for SRv6 July 2020
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on January 14, 2021.
Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Specification of Requirements . . . . . . . . . . . . . . . . 3
3. YANG Model . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2. SRv6 Types . . . . . . . . . . . . . . . . . . . . . . . 4
3.3. SRv6 Base . . . . . . . . . . . . . . . . . . . . . . . . 5
3.3.1. Configuration . . . . . . . . . . . . . . . . . . . . 5
3.3.2. State . . . . . . . . . . . . . . . . . . . . . . . . 6
3.3.3. Notification . . . . . . . . . . . . . . . . . . . . 8
3.4. SRv6 Static . . . . . . . . . . . . . . . . . . . . . . . 9
3.4.1. Configuration . . . . . . . . . . . . . . . . . . . . 9
3.4.2. State . . . . . . . . . . . . . . . . . . . . . . . . 15
3.4.3. Notification . . . . . . . . . . . . . . . . . . . . 15
4. Pending Items . . . . . . . . . . . . . . . . . . . . . . . . 15
5. YANG Specification . . . . . . . . . . . . . . . . . . . . . 15
5.1. SRv6 Types . . . . . . . . . . . . . . . . . . . . . . . 15
5.2. SRv6 Base . . . . . . . . . . . . . . . . . . . . . . . . 32
5.3. SRv6 Static . . . . . . . . . . . . . . . . . . . . . . . 48
6. Security Considerations . . . . . . . . . . . . . . . . . . . 71
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 72
8. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 72
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 73
9.1. Normative References . . . . . . . . . . . . . . . . . . 73
9.2. Informative References . . . . . . . . . . . . . . . . . 75
Raza, et al. Expires January 14, 2021 [Page 2]
Internet-Draft YANG Data Model for SRv6 July 2020
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 75
1. Introduction
The Network Configuration Protocol (NETCONF) [RFC6241] is one of the
network management protocols that defines mechanisms to manage
network devices. YANG [RFC6020] is a modular language that
represents data structures in an XML tree format, and is used as a
data modeling language for the NETCONF.
Segment Routing (SR), as defined in [RFC8402], leverages the source
routing paradigm where a node steers a packet through an ordered list
of instructions, called segments. SR, thus, allows enforcing a flow
through any topological path and/or service chain while maintaining
per-flow state only at the ingress nodes to the SR domain. When
applied to ipv6 data-plane (i.e. SRv6), SR requires a type of
routing header (SRH) in an IPv6 packet that is used to encode an
ordered list of IPv6 addresses (SIDs). The active segment is
indicated by the Destination Address of the packet, and the next
segment is indicated by a pointer in the SRH [RFC8754]. The various
functions and behaviors corresponding to network programming using
SRv6 are specified in [I-D.ietf-spring-srv6-network-programming].
This document introduces a YANG data model for base SRv6 that would
serve as a base framework for configuring and managing an SRv6
subsystem. As needed, other SRv6 technology models (e.g. ISIS,
OSPFv3, BGP, EVPN, Service Chaining) may augment this model.
Furthermore, to illustrate basic behaviors as captured in
[I-D.ietf-spring-srv6-network-programming], this document also
specifies a YANG model for the SRv6-Static application.
The model currently defines the following constructs that are used
for managing SRv6:
o Configuration
o Operational State
o Notifications
2. Specification of Requirements
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in BCP 14 [RFC2119]
[RFC8174] when, and only when, they appear in all capitals, as shown
here.
Raza, et al. Expires January 14, 2021 [Page 3]
Internet-Draft YANG Data Model for SRv6 July 2020
3. YANG Model
3.1. Overview
This document defines following three new YANG modules:
o ietf-srv6-types: defines common and basic types related to SRv6
o ietf-srv6-base: specifies management model for SRv6 base
constructs (locator, SIDs, etc.)
o ietf-srv6-static: specifies management model for SRv6-static
application
The modeling in this document complies with the Network Management
Datastore Architecture (NMDA) defined in [RFC8342]. The operational
state data is combined with the associated configuration data in the
same hierarchy [RFC8407]. When protocol states are retrieved from
the NMDA operational state datastore, the returned states cover all
"config true" (rw) and "config false" (ro) nodes defined in the
schema.
In this document, when a simplified graphical representation of YANG
model is presented in a tree diagram, the meaning of the symbols in
these tree diagrams is defined in [RFC8340].
3.2. SRv6 Types
SRv6 common types and definitions are defined in the new module
"ietf-srv6-types". The main types defined in this module include:
o srv6-sid: SRv6 SID
o srv6-func-value: Typedef for FUNC value in an SRv6 SID
o srv6-func-value-reserved-type: Enum (list) of "reserved" FUNC
opcode
o srv6-endpoint-type: SRv6 Endpoint behaviors
[I-D.ietf-spring-srv6-network-programming] identity type
o srv6-headend-type: SRv6 Headend behavior types
[I-D.ietf-spring-srv6-network-programming] identity type
o srv6-security-type: SRv6 Security rule type
[I-D.ietf-spring-srv6-network-programming] identity type
Raza, et al. Expires January 14, 2021 [Page 4]
Internet-Draft YANG Data Model for SRv6 July 2020
o srv6-counter-type: SRv6 Counter type
[I-D.ietf-spring-srv6-network-programming] identity type
The corresponding YANG specification for this module is captured in
Section 5.1.
3.3. SRv6 Base
The base SRv6 model is specified in ietf-srv6-base module. This
module augments "/rt:routing:/sr:segment-routing"
[I-D.ietf-spring-sr-yang] and specifies the configuration,
operational state, and notification events that are required to
manage the base SRv6.
The corresponding YANG specification for this module is captured in
Section 5.2.
3.3.1. Configuration
The module defines some fundamental items required to configure an
SRv6 network:
o SRv6 Enablement: Enable Segment-Routing SRv6 feature
o Encapsulation Parameters: Provide encapsulation related parameters
(such as source-address, hop-limit, and traffic-class) to be used
when performing T.Encap* operation.
o Locator(s) Specification: SRv6 locator is a fundamental construct
for an SRv6 network. This is the construct from which SID
(function values) are allocated that on the local box, and
advertised to and used by remote nodes for reachability. A
locator is identified by a name and has associated prefix and
[IGP] algorithm. It can be configured as an anycast locator. It
is possible to have more than one locator on a node (e.g. locator
per algorithm, anycast and non-anycast locators, etc.).
Following is a simplified graphical tree representation of the data
model for SRv6 base configuration
Raza, et al. Expires January 14, 2021 [Page 5]
Internet-Draft YANG Data Model for SRv6 July 2020
module: ietf-srv6-base
augment /rt:routing/sr:segment-routing:
+--rw srv6
+--rw enable? boolean
+--rw encapsulation
| +--rw source-address? inet:ipv6-address
| +--rw hop-limit
| | +--rw value? uint8
| | +--rw propagate? boolean
| +--rw traffic-class
| +--rw value? uint8
| +--rw propagate? boolean
+--rw locators
+--rw locator* [name]
+--rw name string
+--rw enable? boolean
+--rw prefix
| +--rw address inet:ipv6-address
| +--rw length srv6-types:srv6-locator-len
+--rw algorithm? uint32
+--rw anycast? boolean
Figure 1: SRv6 Base - Config Tree
3.3.2. State
As per NMDA model, the state related to configuration items specified
in above section Section 3.3.1 can be retrieved from the same tree.
This section defines other operational state items related to SRv6
base.
The operational state corresponding to the SRv6 base includes:
o node capabilities: provides information on the node (hardware)
capabilities and support regarding various SRv6 aspects and
features including endpoint behaviors, headend behaviors, security
rules, counter/stats support, and other SRv6 parameters that need
to be signaled in an SRv6 network by the protocols.
o locator: provides information related to a locator. The
information includes locator operational state, and state of
address conflict with any ipv6 address configured on local
interfaces etc.
o local-sid: provides information related to local-SIDs allocated
and/or installed on the node. This includes two types of
information:
Raza, et al. Expires January 14, 2021 [Page 6]
Internet-Draft YANG Data Model for SRv6 July 2020
1. aggregate across all local-SIDs such as aggregate counters
2. per local-SID information such as allocation type (dynamic or
explicit), SID owner protocol(s)/client(s), forwarding [paths]
information, and stats/counters.
Following is a simplified graphical tree representation of the data
model for the SRv6 operational state (for read-only items):
module: ietf-srv6-base
augment /rt:routing/sr:segment-routing:
+--rw srv6
+--rw locators
| +--rw locator* [name]
| +--rw name string
| +--ro operational-status? srv6-types:srv6-status-type
| +--ro is-in-address-conflict? boolean
+--ro node-capabilities
| +--ro end-behavior* [type]
| | +--ro type identityref
| | +--ro supported boolean
| +--ro headend-behavior* [type]
| | +--ro type identityref
| | +--ro supported boolean
| +--ro msd
| | +--ro max-sl? uint8
| | +--ro max-end-pop? uint8
| | +--ro max-h_encap? uint8
| | +--ro max-end_d? uint8
| +--ro security-rule* [type]
| | +--ro type identityref
| | +--ro supported boolean
| +--ro counters* [type]
| +--ro type identityref
| +--ro supported boolean
+--ro local-sids
+--ro counters
| +--ro cnt-3
| +--ro in-pkts? yang:counter64
| +--ro in-octets? yang:counter64
+--ro local-sid* [sid]
+--ro sid srv6-types:srv6-sid
+--ro locator? -> /rt:routing/sr:segment-routing/srv6:srv6/locators/locator/name
+--ro is-reserved? boolean
+--ro end-behavior-type? identityref
+--ro alloc-type? srv6-types:sid-alloc-type
+--ro owner* [type instance]
Raza, et al. Expires January 14, 2021 [Page 7]
Internet-Draft YANG Data Model for SRv6 July 2020
| +--ro type identityref
| +--ro instance string
| +--ro is-winner? boolean
+--ro forwarding
| +--ro is-installed? boolean
| +--ro next-hop-type? srv6-types:srv6-nexthop-type
| +--ro paths
| +--ro path* [path-index]
| +--ro path-index uint8
| +--ro l2
| | +--ro interface? if:interface-ref
| +--ro l3
| | +--ro interface? if:interface-ref
| | +--ro next-hop? inet:ip-address
| | +--ro weight? uint32
| | +--ro role? enumeration
| | +--ro backup-path-index? uint8
| +--ro (encap-type)?
| +--:(srv6)
| | +--ro out-sid* [sid]
| | +--ro sid srv6-types:srv6-sid
| +--:(mpls)
| +--ro out-label* [label]
| +--ro label rt-types:mpls-label
+--ro counters
+--ro cnt-1
+--ro in-pkts? yang:counter64
+--ro in-octets? yang:counter64
Figure 2: SRv6 Base - State Tree
3.3.3. Notification
This model defines a list of notifications to inform an operator of
important events detected during the SRv6 operation. These events
include events related to:
o locator operational state changes
o local-SID collision event
Following is a simplified graphical tree representation of the data
model for SRv6 notifications:
Raza, et al. Expires January 14, 2021 [Page 8]
Internet-Draft YANG Data Model for SRv6 July 2020
module: ietf-srv6-base
notifications:
+---n srv6-locator-status-event
| +--ro operational-status? srv6-types:srv6-status-type
| +--ro locator? -> /rt:routing/sr:segment-routing/srv6:srv6/locators/locator/name
+---n srv6-sid-collision-event
+--ro sid? srv6-types:srv6-sid
+--ro existing
| +--ro end-behavior-type? identityref
+--ro requested
+--ro end-behavior-type? identityref
Figure 3: SRv6 Base - Notification Tree
3.4. SRv6 Static
SRv6-Static application allows a user to specify SRv6 local SIDs and
program them in the forwarding plane. The SRv6-Static model is
captured in the ietf-srv6-static module.
The associated YANG specification for this module is captured in
Section 5.3.
3.4.1. Configuration
The SRv6-Static configuration augments the SRv6-base locator tree
"/rt:routing/sr:segment-routing/srv6:srv6/srv6:locators/srv6:locator"
Following are salient features of the SRv6-Static config model:
o Allows static (explicit) configuration for local-SIDs under a
given locator.
o Given that entry is scoped under a locator, the key for each entry
is "function" value.
o A user must also specify end-behavior type (End*) associated with
the entry.
o A user must also specify behavior-specific data with each entry.
For example, for any end behavior requiring a table lookup, a
lookup-table need be provided. Similarly, for any end behavior
with forwarding next-hops need to specify next-hop information.
The example of former include End, End.T, End.DT4, End.DT6, and
End.DT46, whereas example of later include End.X, End.DX4,
End.DX6, End.B6, End.BM etc.
Raza, et al. Expires January 14, 2021 [Page 9]
Internet-Draft YANG Data Model for SRv6 July 2020
o Each local-SID entry has zero or more forwarding paths specified.
o A forwarding path has next-hop type that depends on the end
behavior, and could be either ipv6, or ipv4, or mpls, or l2 type.
For example, End.X, End.DX4, End.DX6, End.B6, End.BM, and End.DX2
will have ipv6, ipv4, ipv6, ipv6, mpls, and l2 next-hop types
respectively
o For each forwarding next-hop type, the appropriate path attributes
are to be specified as well. For L2 type, the only other
information required is the L2 interface name. Whereas for L3
(ipv6, ipv4, mpls) types, the information includes L3 interface
name, next-hop IP address, weight, and protection information.
o Depending on the end behavior type, a forwarding path may have
either MPLS or SRv6 encapsulation -- i.e., Stack of out-labels or
Stack of SRv6 out-SIDs. The example of former is End.BM and
example of later include the rest (End.X, End.DX4, End.DX6, End.B6
etc.).
Following is a simplified graphical tree representation of the data
model for SRv6 Static configuration
module: ietf-srv6-static
augment /rt:routing/sr:segment-routing/srv6:srv6/srv6:locators/srv6:locator:
+--rw static
+--rw local-sids
+--rw sid* [function]
+--rw function srv6-types:srv6-func-value
+--rw end-behavior-type identityref
+--rw end
+--rw end_psp
+--rw end_usp
+--rw end_psp_usp
+--rw end_usd
+--rw end_psp_usd
+--rw end_usp_usd
+--rw end_psp_usp_usd
+--rw end-t
| +--rw lookup-table-ipv6 srv6-types:table-id
+--rw end-t_psp
| +--rw lookup-table-ipv6 srv6-types:table-id
+--rw end-t_usp
| +--rw lookup-table-ipv6 srv6-types:table-id
+--rw end-t_psp_usp
| +--rw lookup-table-ipv6 srv6-types:table-id
+--rw end-t_usd
Raza, et al. Expires January 14, 2021 [Page 10]
Internet-Draft YANG Data Model for SRv6 July 2020
| +--rw lookup-table-ipv6 srv6-types:table-id
+--rw end-t_psp_usd
| +--rw lookup-table-ipv6 srv6-types:table-id
+--rw end-t_usp_usd
| +--rw lookup-table-ipv6 srv6-types:table-id
+--rw end-t_psp_usp_usd
| +--rw lookup-table-ipv6 srv6-types:table-id
+--rw end-x
| +--rw protected? boolean
| +--rw paths
| +--rw path* [path-index]
| +--rw path-index uint8
| +--rw interface? if:interface-ref
| +--rw next-hop? inet:ipv6-address
| +--rw table? srv6-types:table-id
| +--rw weight? uint32
| +--rw role? enumeration
| +--rw backup-path-index? uint8
| +--rw sid-list
| +--rw out-sid* [sid]
| +--rw sid srv6-types:srv6-sid
+--rw end-x_psp
| +--rw protected? boolean
| +--rw paths
| +--rw path* [path-index]
| +--rw path-index uint8
| +--rw interface? if:interface-ref
| +--rw next-hop? inet:ipv6-address
| +--rw table? srv6-types:table-id
| +--rw weight? uint32
| +--rw role? enumeration
| +--rw backup-path-index? uint8
| +--rw sid-list
| +--rw out-sid* [sid]
| +--rw sid srv6-types:srv6-sid
+--rw end-x_usp
| +--rw protected? boolean
| +--rw paths
| +--rw path* [path-index]
| +--rw path-index uint8
| +--rw interface? if:interface-ref
| +--rw next-hop? inet:ipv6-address
| +--rw table? srv6-types:table-id
| +--rw weight? uint32
| +--rw role? enumeration
| +--rw backup-path-index? uint8
| +--rw sid-list
| +--rw out-sid* [sid]
Raza, et al. Expires January 14, 2021 [Page 11]
Internet-Draft YANG Data Model for SRv6 July 2020
| +--rw sid srv6-types:srv6-sid
+--rw end-x_psp_usp
| +--rw protected? boolean
| +--rw paths
| +--rw path* [path-index]
| +--rw path-index uint8
| +--rw interface? if:interface-ref
| +--rw next-hop? inet:ipv6-address
| +--rw table? srv6-types:table-id
| +--rw weight? uint32
| +--rw role? enumeration
| +--rw backup-path-index? uint8
| +--rw sid-list
| +--rw out-sid* [sid]
| +--rw sid srv6-types:srv6-sid
+--rw end-x_usd
| +--rw protected? boolean
| +--rw paths
| +--rw path* [path-index]
| +--rw path-index uint8
| +--rw interface? if:interface-ref
| +--rw next-hop? inet:ipv6-address
| +--rw table? srv6-types:table-id
| +--rw weight? uint32
| +--rw role? enumeration
| +--rw backup-path-index? uint8
| +--rw sid-list
| +--rw out-sid* [sid]
| +--rw sid srv6-types:srv6-sid
+--rw end-x_psp_usd
| +--rw protected? boolean
| +--rw paths
| +--rw path* [path-index]
| +--rw path-index uint8
| +--rw interface? if:interface-ref
| +--rw next-hop? inet:ipv6-address
| +--rw table? srv6-types:table-id
| +--rw weight? uint32
| +--rw role? enumeration
| +--rw backup-path-index? uint8
| +--rw sid-list
| +--rw out-sid* [sid]
| +--rw sid srv6-types:srv6-sid
+--rw end-x_usp_usd
| +--rw protected? boolean
| +--rw paths
| +--rw path* [path-index]
| +--rw path-index uint8
Raza, et al. Expires January 14, 2021 [Page 12]
Internet-Draft YANG Data Model for SRv6 July 2020
| +--rw interface? if:interface-ref
| +--rw next-hop? inet:ipv6-address
| +--rw table? srv6-types:table-id
| +--rw weight? uint32
| +--rw role? enumeration
| +--rw backup-path-index? uint8
| +--rw sid-list
| +--rw out-sid* [sid]
| +--rw sid srv6-types:srv6-sid
+--rw end-x_psp_usp_usd
| +--rw protected? boolean
| +--rw paths
| +--rw path* [path-index]
| +--rw path-index uint8
| +--rw interface? if:interface-ref
| +--rw next-hop? inet:ipv6-address
| +--rw table? srv6-types:table-id
| +--rw weight? uint32
| +--rw role? enumeration
| +--rw backup-path-index? uint8
| +--rw sid-list
| +--rw out-sid* [sid]
| +--rw sid srv6-types:srv6-sid
+--rw end-b6-encaps
| +--rw policy-name string
| +--rw source-address inet:ipv6-address
| +--rw paths
| +--rw path* [path-index]
| +--rw path-index uint8
| +--rw interface? if:interface-ref
| +--rw next-hop? inet:ipv6-address
| +--rw table? srv6-types:table-id
| +--rw weight? uint32
| +--rw role? enumeration
| +--rw backup-path-index? uint8
| +--rw sid-list
| +--rw out-sid* [sid]
| +--rw sid srv6-types:srv6-sid
+--rw end-bm
| +--rw policy-name string
| +--rw paths
| +--rw path* [path-index]
| +--rw path-index uint8
| +--rw interface? if:interface-ref
| +--rw next-hop? inet:ip-address
| +--rw weight? uint32
| +--rw role? enumeration
| +--rw backup-path-index? uint8
Raza, et al. Expires January 14, 2021 [Page 13]
Internet-Draft YANG Data Model for SRv6 July 2020
| +--rw sid-list
| +--rw out-sid* [sid]
| +--rw sid srv6-types:srv6-sid
+--rw end-dx6
| +--rw paths
| +--rw path* [path-index]
| +--rw path-index uint8
| +--rw interface? if:interface-ref
| +--rw next-hop? inet:ipv6-address
| +--rw table? srv6-types:table-id
| +--rw weight? uint32
| +--rw role? enumeration
| +--rw backup-path-index? uint8
| +--rw sid-list
| +--rw out-sid* [sid]
| +--rw sid srv6-types:srv6-sid
+--rw end-dx4
| +--rw paths
| +--rw path* [path-index]
| +--rw path-index uint8
| +--rw interface? if:interface-ref
| +--rw next-hop? inet:ipv4-address
| +--rw table? srv6-types:table-id
| +--rw weight? uint32
| +--rw role? enumeration
| +--rw backup-path-index? uint8
| +--rw sid-list
| +--rw out-sid* [sid]
| +--rw sid srv6-types:srv6-sid
+--rw end-dt6
| +--rw lookup-table-ipv6 srv6-types:table-id
+--rw end-dt4
| +--rw lookup-table-ipv4 srv6-types:table-id
+--rw end-dt46
| +--rw lookup-table-ipv4 srv6-types:table-id
| +--rw lookup-table-ipv6 srv6-types:table-id
+--rw end-dx2
| +--rw path
| +--rw l2-interface if:interface-ref
+--rw end-dx2v
| +--rw lookup-table-vlan srv6-types:table-id
+--rw end-dt2u
| +--rw lookup-table-mac srv6-types:table-id
+--rw end-dt2m
+--rw flooding-table srv6-types:table-id
+--rw paths
+--rw path* [path-index]
+--rw path-index uint8
Raza, et al. Expires January 14, 2021 [Page 14]
Internet-Draft YANG Data Model for SRv6 July 2020
+--rw l2-interface? if:interface-ref
Figure 4: SRv6 Static - Config Tree
3.4.2. State
As per NMDA model, the state related to configuration items specified
in above section Section 3.4.1 can be retrieved from the same tree.
The state regarding the local-SIDs created by SRv6-static model can
be obtained using the state model of SRv6-base. Hence, there is no
additional state identified at this time for SRv6-static.
3.4.3. Notification
None.
4. Pending Items
Following are the items that will be addressed in next revisions:
o Extend local-SID collision event/notification in SRv6-base model.
o Add RPC support in the SRv6-base model.
o Add ARGS support in the SRv6-Static model.
o QoS support
5. YANG Specification
Following are actual YANG definition for SRv6 modules defined earlier
in the document.
5.1. SRv6 Types
This YANG module imports types defined in [RFC6991].
Moreover, the module models behaviors defined in
[I-D.ietf-spring-srv6-network-programming],
[I-D.ietf-spring-sr-service-programming], and
[I-D.ietf-dmm-srv6-mobile-uplane].
<CODE BEGINS> file "ietf-srv6-types@2020-07-13.yang" -->
// RFC Editor: replace the above date with the date of
// publication and remove this note.
Raza, et al. Expires January 14, 2021 [Page 15]
Internet-Draft YANG Data Model for SRv6 July 2020
module ietf-srv6-types {
yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-srv6-types";
prefix srv6-types;
import ietf-inet-types {
prefix inet;
reference "RFC 6991: Common YANG Data Types";
}
organization
"IETF SPRING Working Group";
contact
"WG Web: <http://tools.ietf.org/wg/spring/>
WG List: <mailto:spring@ietf.org>
Editor: Kamran Raza
<mailto:skraza@cisco.com>
Editor: Jaganbabu Rajamanickam
<maito:jrajaman@cisco.com>
Editor: Xufeng Liu
<mailto:xufeng.liu.ietf@gmail.com>
Editor: Zhibo Hu
<mailto:huzhibo@huawei.com>
Editor: Iftekhar Hussain
<mailto:IHussain@infinera.com>
Editor: Himanshu Shah
<mailto:hshah@ciena.com>
Editor: Daniel Voyer
<mailto:daniel.voyer@bell.ca>
Editor: Hani Elmalky
<mailto:helmalky@google.com>
Editor: Satoru Matsushima
<mailto:satoru.matsushima@gmail.com>
Editor: Katsuhiro Horiba
<mailto:katsuhiro.horiba@g.softbank.co.jp>
Editor: Ahmed AbdelSalam
Raza, et al. Expires January 14, 2021 [Page 16]
Internet-Draft YANG Data Model for SRv6 July 2020
<mailto:ahabdels@cisco.com>
";
description
"This YANG module defines the essential types for the
management of Segment-Routing with IPv6 dataplane (SRv6).
Copyright (c) 2018 IETF Trust and the persons identified as
authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject
to the license terms contained in, the Simplified BSD License
set forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents
(http://trustee.ietf.org/license-info).";
reference "RFC XXXX";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
revision 2020-07-13 {
description
"Alignment with SRv6 net-pgm rev16";
reference
"RFC XXXX: YANG Data Model for SRv6";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
}
revision 2019-10-30 {
description
"Renaming of some types";
reference
"RFC XXXX: YANG Data Model for SRv6";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
}
revision 2019-07-08 {
description
"Alignment with latest SRv6 network programming";
reference
"RFC XXXX: YANG Data Model for SRv6";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
Raza, et al. Expires January 14, 2021 [Page 17]
Internet-Draft YANG Data Model for SRv6 July 2020
}
revision 2018-10-22 {
description
"Initial revision.";
reference
"RFC XXXX: YANG Data Model for SRv6";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
}
identity srv6-endpoint-type {
description
"Base identity from which specific SRv6 Endpoint types are
derived.";
}
/* Endpoints defined under draft-ietf-spring-
* srv6-network-programming */
identity End {
base srv6-endpoint-type;
description
"End function (variant: no PSP, no USP).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End_PSP {
base srv6-endpoint-type;
description
"End function (variant: PSP only).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End_USP {
base srv6-endpoint-type;
description
"End function (variant: USP only).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End_PSP_USP {
Raza, et al. Expires January 14, 2021 [Page 18]
Internet-Draft YANG Data Model for SRv6 July 2020
base srv6-endpoint-type;
description
"End function (variant: PSP and USP).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.X {
base srv6-endpoint-type;
description
"Endpoint with cross-connect to an array
of layer-3 adjacencies (variant: no PSP, no USP).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.X_PSP {
base srv6-endpoint-type;
description
"Endpoint with cross-connect to an array
of layer-3 adjacencies (variant: PSP only).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.X_USP {
base srv6-endpoint-type;
description
"Endpoint with cross-connect to an array
of layer-3 adjacencies (variant: USP only).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.X_PSP_USP {
base srv6-endpoint-type;
description
"Endpoint with cross-connect to an array
of layer-3 adjacencies (variant: PSP and USP).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
Raza, et al. Expires January 14, 2021 [Page 19]
Internet-Draft YANG Data Model for SRv6 July 2020
identity End.T {
base srv6-endpoint-type;
description
"Endpoint with specific IPv6 table lookup
(variant: no PSP, no USP).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.T_PSP {
base srv6-endpoint-type;
description
"Endpoint with specific IPv6 table lookup
(variant: PSP only).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.T_USP {
base srv6-endpoint-type;
description
"Endpoint with specific IPv6 table lookup
(variant: USP only).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.T_PSP_USP {
base srv6-endpoint-type;
description
"Endpoint with specific IPv6 table lookup
(variant: PSP and USP).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.B6.Encaps {
base srv6-endpoint-type;
description
"Endpoint bound to an SRv6 Policy
where the SRv6 Policy also includes an
IPv6 Source Address A.";
reference
"draft-ietf-spring-srv6-network-programming-01";
Raza, et al. Expires January 14, 2021 [Page 20]
Internet-Draft YANG Data Model for SRv6 July 2020
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.BM {
base srv6-endpoint-type;
description
"Endpoint bound to an SR-MPLS Policy";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.DX6 {
base srv6-endpoint-type;
description
"Endpoint with decapsulation and cross-connect
to an array of IPv6 adjacencies";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.DX4 {
base srv6-endpoint-type;
description
"Endpoint with decapsulation and cross-connect
to an array of IPv4 adjacencies";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.DT6 {
base srv6-endpoint-type;
description
"Endpoint with decapsulation and specific
IPv6 table lookup";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.DT4 {
base srv6-endpoint-type;
description
"Endpoint with decapsulation and specific
IPv4 table lookup";
reference
Raza, et al. Expires January 14, 2021 [Page 21]
Internet-Draft YANG Data Model for SRv6 July 2020
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.DT46 {
base srv6-endpoint-type;
description
"Endpoint with decapsulation and specific IP
(IPv4 or IPv6) table lookup";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.DX2 {
base srv6-endpoint-type;
description
"Endpoint with decapsulation and Layer-2
cross-connect to an L2 interface";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.DX2V {
base srv6-endpoint-type;
description
"Endpoint with decapsulation and specific
VLAN L2 table lookup";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.DT2U {
base srv6-endpoint-type;
description
"Endpoint with decapsulation and specific
unicast MAC L2 table lookup";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.DT2M {
base srv6-endpoint-type;
description
"Endpoint with decapsulation and specific L2 table
Raza, et al. Expires January 14, 2021 [Page 22]
Internet-Draft YANG Data Model for SRv6 July 2020
flooding";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.S {
base srv6-endpoint-type;
description
"Endpoint in search of a target in table TE";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.B6.Encaps.Red {
base srv6-endpoint-type;
description
"This is a reduced encap variation of the End.B6.Encap
behavior.";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End_USD {
base srv6-endpoint-type;
description
"End function (variant: USD).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.PSP_USD {
base srv6-endpoint-type;
description
"End function (variant: PSP and USD).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.USP_USD {
base srv6-endpoint-type;
description
"End function (variant: USP and USD).";
reference
Raza, et al. Expires January 14, 2021 [Page 23]
Internet-Draft YANG Data Model for SRv6 July 2020
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.PSP_USP_USD {
base srv6-endpoint-type;
description
"End function (variant: PSP and USP and USD).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.X_USD {
base srv6-endpoint-type;
description
"Endpoint with cross-connect to an array
of layer-3 adjacencies (variant: USD).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.X_PSP_USD {
base srv6-endpoint-type;
description
"Endpoint with cross-connect to an array
of layer-3 adjacencies (variant: PSP and USD).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.X_USP_USD {
base srv6-endpoint-type;
description
"Endpoint with cross-connect to an array
of layer-3 adjacencies (variant: USP and USD).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.X_PSP_USP_USD {
base srv6-endpoint-type;
description
"Endpoint with cross-connect to an array
of layer-3 adjacencies (variant: PSP and USP and USD).";
Raza, et al. Expires January 14, 2021 [Page 24]
Internet-Draft YANG Data Model for SRv6 July 2020
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.T_USD {
base srv6-endpoint-type;
description
"Endpoint with decapsulation and Layer-2
cross-connect to an L2 interface";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.T_PSP_USD {
base srv6-endpoint-type;
description
"Endpoint with specific IPv6 table lookup
(variant: PSP and USD).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.T_USP_USD {
base srv6-endpoint-type;
description
"Endpoint with specific IPv6 table lookup
(variant: USP and USD).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.T_PSP_USP_USD {
base srv6-endpoint-type;
description
"Endpoint with specific IPv6 table lookup
(variant: PSP and USP and USD).";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
/* Endpoints defined under draft-xuclad-spring-sr-service-chaining */
identity End.AS {
Raza, et al. Expires January 14, 2021 [Page 25]
Internet-Draft YANG Data Model for SRv6 July 2020
base srv6-endpoint-type;
description
"Service-Chaining Static proxy for inner type (Ethernet,
IPv4 or IPv6)";
reference
"draft-xuclad-spring-sr-service-chaining-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.AD {
base srv6-endpoint-type;
description
"Service-Chaining Dynamic proxy for inner type (Ethernet,
IPv4 or IPv6)";
reference
"draft-xuclad-spring-sr-service-chaining-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.ASM {
base srv6-endpoint-type;
description
"Service-Chaining Shared memory SR proxy for inner type
(Ethernet, IPv4 or IPv6)";
reference
"draft-xuclad-spring-sr-service-chaining-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.AM {
base srv6-endpoint-type;
description
"Service-Chaining Masquerading SR proxy";
reference
"draft-xuclad-spring-sr-service-chaining-01";
// RFC Editor: replace with actual RFC number and remove this note
}
/* Endpoints defined under draft-ietf-dmm-srv6-mobile-uplane */
identity End.MAP {
base srv6-endpoint-type;
description
"DMM End.MAP";
reference
"draft-ietf-dmm-srv6-mobile-uplane-05";
// RFC Editor: replace with actual RFC number and remove this note
}
Raza, et al. Expires January 14, 2021 [Page 26]
Internet-Draft YANG Data Model for SRv6 July 2020
identity End.M.GTP6.D {
base srv6-endpoint-type;
description
"DMM End.M.GTP6.D";
reference
"draft-ietf-dmm-srv6-mobile-uplane-05";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.M.GTP6.E {
base srv6-endpoint-type;
description
"DMM End.M.GTP6.E";
reference
"draft-ietf-dmm-srv6-mobile-uplane-05";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.M.GTP4.D {
base srv6-endpoint-type;
description
"DMM End.M.GTP4.D";
reference
"draft-ietf-dmm-srv6-mobile-uplane-05";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.M.GTP4.E {
base srv6-endpoint-type;
description
"DMM End.M.GTP4.E";
reference
"draft-ietf-dmm-srv6-mobile-uplane-05";
// RFC Editor: replace with actual RFC number and remove this note
}
identity End.Limit {
base srv6-endpoint-type;
description
"DMM End.Limit";
reference
"draft-ietf-dmm-srv6-mobile-uplane-05";
// RFC Editor: replace with actual RFC number and remove this note
}
identity srv6-headend-type {
description
"Base identity from which SRv6 headend rule types are derived.";
Raza, et al. Expires January 14, 2021 [Page 27]
Internet-Draft YANG Data Model for SRv6 July 2020
}
identity H.Encaps {
base srv6-headend-type;
description
"Headend rule H.Encaps with encapsulated of an SRv6 policy";
reference
"draft-ietf-spring-srv6-network-programming-16";
// RFC Editor: replace with actual RFC number and remove this note
}
identity H.Encaps.Red {
base srv6-headend-type;
description
"Headend rule H.Encaps.Red with reduced encap of an
SRv6 policy";
reference
"draft-ietf-spring-srv6-network-programming-16";
// RFC Editor: replace with actual RFC number and remove this note
}
identity H.Encaps.L2 {
base srv6-headend-type;
description
"Headend rule H.Encaps.l2 on the received L2 frame";
reference
"draft-ietf-spring-srv6-network-programming-16";
// RFC Editor: replace with actual RFC number and remove this note
}
identity H.Encaps.L2.Red {
base srv6-headend-type;
description
"Headend rule H.Encaps.L2.Red on the received L2 frame";
reference
"draft-ietf-spring-srv6-network-programming-16";
// RFC Editor: replace with actual RFC number and remove this note
}
identity srv6-security-type {
description
"Base identity from which SRv6 Security rule types are
derived.";
}
identity SEC-1 {
base srv6-security-type;
description
Raza, et al. Expires January 14, 2021 [Page 28]
Internet-Draft YANG Data Model for SRv6 July 2020
"Security rule SEC-1";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity SEC-2 {
base srv6-security-type;
description
"Security rule SEC-2";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity SEC-3 {
base srv6-security-type;
description
"Security rule SEC-3";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity srv6-counter-type {
description
"Base identity from which SRv6 counter types are derived.";
}
identity CNT-1 {
base srv6-counter-type;
description
"Counter rule CNT-1";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity CNT-2 {
base srv6-counter-type;
description
"Counter rule CNT-2";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
identity CNT-3 {
Raza, et al. Expires January 14, 2021 [Page 29]
Internet-Draft YANG Data Model for SRv6 July 2020
base srv6-counter-type;
description
"Counter rule CNT-3";
reference
"draft-ietf-spring-srv6-network-programming-01";
// RFC Editor: replace with actual RFC number and remove this note
}
typedef srv6-sid {
type inet:ipv6-prefix;
description
"This type defines a SID value in SRv6";
}
typedef srv6-func-value {
type uint32;
description
"This is a typedef for SID's FUNC value";
}
typedef srv6-func-value-reserved-type {
type enumeration {
enum invalid { value 0; description "Invalid function value"; }
}
description "SRv6 SID's FUNC Reserved values";
}
typedef srv6-locator-len {
type uint8 {
range "32 .. 96";
}
description
"This type defines an SRv6 locator len with range constraints";
}
typedef srv6-sid-pfxlen {
type uint8 {
range "32 .. 128";
}
default 128;
description
"This type defines a SID prefixlen with range constraints";
}
typedef sid-alloc-type {
type enumeration {
enum Dynamic {
Raza, et al. Expires January 14, 2021 [Page 30]
Internet-Draft YANG Data Model for SRv6 July 2020
description
"SID allocated dynamically.";
}
enum Explicit {
description
"SID allocated with explicit (static) value";
}
}
description
"Types of sid allocation used.";
}
identity srv6-sid-owner-type {
description
"Base identity from which SID owner types are derived.";
}
identity isis {
base srv6-sid-owner-type;
description "ISIS";
}
identity ospfv3 {
base srv6-sid-owner-type;
description "OSPFv3";
}
identity bgp {
base srv6-sid-owner-type;
description "BGP";
}
identity evpn {
base srv6-sid-owner-type;
description "EVPN";
}
identity sr-policy {
base srv6-sid-owner-type;
description "SR Policy";
}
identity service-function {
base srv6-sid-owner-type;
description "SF";
}
typedef table-id {
Raza, et al. Expires January 14, 2021 [Page 31]
Internet-Draft YANG Data Model for SRv6 July 2020
type uint32;
description
"Routing/switching/bridging/VLAN Table Id";
}
typedef srv6-status-type {
type enumeration {
enum up { value 1; description "State is Up"; }
enum down { description "State is Down"; }
}
description
"Status type";
}
typedef srv6-nexthop-type {
type enumeration {
enum ipv4 { value 1; description "IPv4 next-hop"; }
enum ipv6 { description "IPv6 next-hop"; }
enum mpls { description "MPLS next-hop"; }
enum l2 { description "L2 next-hop"; }
}
description
"Forwarding Next-hop type";
}
} // module
<CODE ENDS>
Figure 5: ietf-srv6-types.yang
5.2. SRv6 Base
This YANG module imports types defined in [RFC6991], [RFC8294],
[RFC8343], and [RFC8349].
<CODE BEGINS> file "ietf-srv6-base@2020-07-13.yang" -->
// RFC Editor: replace the above date with the date of
// publication and remove this note.
module ietf-srv6-base {
yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-srv6-base";
Raza, et al. Expires January 14, 2021 [Page 32]
Internet-Draft YANG Data Model for SRv6 July 2020
prefix srv6;
import ietf-interfaces {
prefix "if";
reference "RFC 8343: A YANG Data Model for Interface Management";
}
import ietf-inet-types {
prefix inet;
reference "RFC 6991: Common YANG Data Types";
}
import ietf-yang-types {
prefix "yang";
reference "RFC 6991: Common YANG Data Types";
}
import ietf-routing-types {
prefix "rt-types";
reference "RFC 8294: Common YANG Data Types for the Routing Area";
}
import ietf-routing {
prefix "rt";
reference
"RFC 8349: A YANG Data Model for Routing Management
(NMDA version)";
}
import ietf-segment-routing {
prefix sr;
reference "draft-ietf-spring-sr-yang";
}
import ietf-srv6-types {
prefix srv6-types;
reference "RFC XXXX: YANG Data Model for SRv6";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
}
organization
"IETF SPRING Working Group";
contact
"WG Web: <http://tools.ietf.org/wg/spring/>
WG List: <mailto:spring@ietf.org>
Editor: Kamran Raza
Raza, et al. Expires January 14, 2021 [Page 33]
Internet-Draft YANG Data Model for SRv6 July 2020
<mailto:skraza@cisco.com>
Editor: Jaganbabu Rajamanickam
<maito:jrajaman@cisco.com>
Editor: Xufeng Liu
<mailto:Xufeng_Liu@jabil.com>
Editor: Zhibo Hu
<mailto:huzhibo@huawei.com>
Editor: Iftekhar Hussain
<mailto:IHussain@infinera.com>
Editor: Himanshu Shah
<mailto:hshah@ciena.com>
Editor: Daniel Voyer
<mailto:daniel.voyer@bell.ca>
Editor: Hani Elmalky
<mailto:helmalky@google.com>
Editor: Satoru Matsushima
<mailto:satoru.matsushima@gmail.com>
Editor: Katsuhiro Horiba
<mailto:katsuhiro.horiba@g.softbank.co.jp>
Editor: Ahmed AbdelSalam
<mailto:ahabdels@cisco.com>
";
description
"This YANG module defines the essential elements for the
management of Segment-Routing with IPv6 dataplane (SRv6).
Copyright (c) 2017 IETF Trust and the persons identified as
authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject
to the license terms contained in, the Simplified BSD License
set forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents
(http://trustee.ietf.org/license-info).";
Raza, et al. Expires January 14, 2021 [Page 34]
Internet-Draft YANG Data Model for SRv6 July 2020
reference "RFC XXXX";
revision 2020-07-13 {
description
"Alignment with SRv6 network programming rev16";
reference
"RFC XXXX: YANG Data Model for SRv6";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
}
revision 2019-10-30 {
description
"Alignment with SRv6 network programming";
reference
"RFC XXXX: YANG Data Model for SRv6";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
}
revision 2019-07-08 {
description
"Alignment with SRv6 network programming";
reference
"RFC XXXX: YANG Data Model for SRv6";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
}
revision 2018-10-22 {
description
"Initial revision.";
reference
"RFC XXXX: YANG Data Model for SRv6";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
}
/*
* Common
*/
grouping path-attrs-cmn {
description
"Path properties -common for v4/v6";
leaf weight {
type uint32;
Raza, et al. Expires January 14, 2021 [Page 35]
Internet-Draft YANG Data Model for SRv6 July 2020
description
"This value is used to compute a loadshare to perform un-equal
load balancing when multiple outgoing path(s) are specified. A
share is computed as a ratio of this number to the total under
all configured path(s).";
}
leaf role {
type enumeration {
enum PRIMARY { description "Path as primary traffic carrying"; }
enum BACKUP { description "Path acts as a backup"; }
enum PRIMARY_AND_BACKUP {
description "Path acts as primary and backup simultaneously"; }
}
description "The path role";
}
leaf backup-path-index {
type uint8;
description "Index of the protecting (backup) path";
}
}
grouping path-out-sids {
description "Grouping for path's SID stack";
list out-sid {
key "sid";
description "Out SID";
leaf sid {
type srv6-types:srv6-sid;
description "SID value";
}
}
}
grouping path-out-labels {
description "Grouping for path's label stack";
list out-label {
key "label";
description "Out label";
leaf label {
type rt-types:mpls-label;
description "Label value";
}
Raza, et al. Expires January 14, 2021 [Page 36]
Internet-Draft YANG Data Model for SRv6 July 2020
}
}
/*
* Config and State
*/
grouping srv6-encap {
description "Grouping for encap param config.";
container encapsulation {
description "Configure encapsulation related parameters";
leaf source-address {
type inet:ipv6-address;
description "Specify a source address (for T.Encap).
The address must locally exists and be routable";
}
container hop-limit {
description "Configure IPv6 header's Hop-limit options";
leaf value {
type uint8;
default 64;
description "Set encapsulating outer IPv6 header's Hoplimit
field to specified value when doing
encapsulation";
}
leaf propagate {
type boolean;
default false;
description "IP TTL/Hop-limit propagation from encapsulated
packet to encapsulating outer IPv6 header's
Hoplimit field. When configured on decapsulation
side, this refers to propagating Hop-limit from
outer IPv6 header to inner header after decap";
}
}
container traffic-class {
description "Configure IPv6 header's Traffic-class options";
leaf value {
type uint8;
default 0;
description "Set encapsulating outer IPv6 header's
Traffic-class field to specified value when
doing encapsulation";
}
Raza, et al. Expires January 14, 2021 [Page 37]
Internet-Draft YANG Data Model for SRv6 July 2020
leaf propagate {
type boolean;
default false;
description "Propagate (or map) Traffic-class/CoS/PCP from
the incoming packet or L2 Ethernet frame being
encapsulated to the encapsulating IPv6 header's
Traffic-class field.";
}
}
}
}
grouping srv6-locator-state {
description "SRv6 grouping Locator state";
leaf operational-status {
type srv6-types:srv6-status-type;
config false;
description "Indicates whether locator state is UP";
}
leaf is-in-address-conflict {
type boolean;
config false;
description "Indicates whether locator address conflicts with
some other IPv6 address on the box";
}
}
grouping srv6-locators {
description "SRv6 locator grouping";
container locators {
description "SRv6 locators";
list locator {
key "name";
description "Configure a SRv6 locator";
leaf name {
type string;
description "Locator name";
}
leaf enable {
type boolean;
default false;
Raza, et al. Expires January 14, 2021 [Page 38]
Internet-Draft YANG Data Model for SRv6 July 2020
description "Enable a SRv6 locator";
}
container prefix {
description "Specify locator prefix value";
leaf address {
type inet:ipv6-address;
mandatory true;
description "IPv6 address";
}
leaf length {
type srv6-types:srv6-locator-len;
mandatory true;
description "Locator (prefix) length";
}
}
leaf algorithm {
type uint32 {
range "128..255";
}
description "Algorithm Id (for Flex-Algo)";
}
leaf anycast {
type boolean;
default false;
description "Set to true if locator is an Anycast locator";
}
uses srv6-locator-state;
}
}
}
grouping srv6-stats-in {
description "Grouping for inbound stats";
leaf in-pkts {
type yang:counter64;
description
"A cumulative counter of the total number of packets
received";
}
leaf in-octets {
type yang:counter64;
Raza, et al. Expires January 14, 2021 [Page 39]
Internet-Draft YANG Data Model for SRv6 July 2020
description
"A cumulative counter of the total bytes received.";
}
}
grouping srv6-stats-out {
description "Grouping for inbound stats";
leaf out-pkts {
type yang:counter64;
description
"A cumulative counter of the total number of packets
transmitted";
}
leaf out-octets {
type yang:counter64;
description
"A cumulative counter of the total bytes transmitted.";
}
}
grouping path-out-sids-choice {
description "Grouping for Out-SID choices";
choice encap-type {
description "Out-SID encap-based choice";
case srv6 {
uses path-out-sids;
}
case mpls {
uses path-out-labels;
}
}
}
grouping local-sid-fwd-state {
description "SRv6 local-SID forwarding state grouping";
container forwarding {
description "SRv6 local-SID forwarding state";
leaf is-installed {
type boolean;
description "Indicates whether SID is installed in forwarding";
}
leaf next-hop-type {
type srv6-types:srv6-nexthop-type;
Raza, et al. Expires January 14, 2021 [Page 40]
Internet-Draft YANG Data Model for SRv6 July 2020
description "Forwarding next-hop types";
}
container paths {
when "../is-installed = 'true'" {
description "This container is valid only when the
local-SID is installed in forwarding";
}
list path {
key path-index;
description "The list of paths associated with the SID";
leaf path-index {
type uint8;
description "Index of the path";
}
container l2 {
when "../../../next-hop-type = 'l2'" {
description "This container is valid only for L2 type
of NHs";
}
leaf interface {
type if:interface-ref;
description "The outgoing Layer2 interface";
}
description "L2 information";
}
container l3 {
when "../../../next-hop-type != 'l2'" {
description "This container is valid only for L3 type
of NHs";
}
leaf interface {
type if:interface-ref;
description "The outgoing Layer3 interface";
}
leaf next-hop {
type inet:ip-address;
description "The IP address of the next-hop";
}
Raza, et al. Expires January 14, 2021 [Page 41]
Internet-Draft YANG Data Model for SRv6 July 2020
uses path-attrs-cmn;
description "L3 information";
}
uses path-out-sids-choice;
}
description "Forwarding paths";
}
}
}
grouping srv6-state-sid {
description "SRv6 SID state grouping";
container local-sids {
config false;
description "Local-SID state";
container counters {
description "SRv6 counters";
container cnt-3 {
description "Counts SRv6 traffic received/dropped on local
prefix not instantiated as local-SID";
uses srv6-stats-in;
}
}
list local-sid {
key "sid";
description "Per-localSID Counters";
leaf sid {
type srv6-types:srv6-sid;
description "Local SID value";
}
uses srv6-locator;
leaf is-reserved {
type boolean;
description "Set to true if SID comes from reserved pool";
}
leaf end-behavior-type {
type identityref {
base srv6-types:srv6-endpoint-type;
}
Raza, et al. Expires January 14, 2021 [Page 42]
Internet-Draft YANG Data Model for SRv6 July 2020
description "Type of SRv6 end behavior.";
}
leaf alloc-type {
type srv6-types:sid-alloc-type;
description
"Type of sid allocation.";
}
list owner {
key "type instance";
description "SID Owner clients";
leaf type {
type identityref {
base srv6-types:srv6-sid-owner-type;
}
description "SID owner/client type";
}
leaf instance {
type string;
description "Client instance";
}
leaf is-winner {
type boolean;
description "Is this client/owner the winning in terms of
forwarding";
}
}
uses local-sid-fwd-state;
container counters {
description "SRv6 per local-SID counters";
container cnt-1 {
description "Counts SRv6 traffic received on local-SID
prefix and processed successfully";
uses srv6-stats-in;
}
}
}
}
}
grouping srv6-support-ends {
description "SRv6 End behavior support grouping";
list end-behavior {
Raza, et al. Expires January 14, 2021 [Page 43]
Internet-Draft YANG Data Model for SRv6 July 2020
key "type";
description "End behavior support";
leaf type {
type identityref {
base srv6-types:srv6-endpoint-type;
}
description "End behavior (End*) type";
}
leaf supported {
type boolean;
mandatory true;
description "True if supported";
}
}
}
grouping srv6-support-headends {
description "SRv6 Headend behavior support grouping";
list headend-behavior {
key "type";
description "Headend behavior support";
leaf type {
type identityref {
base srv6-types:srv6-headend-type;
}
description "Headend behavior (H*) type";
}
leaf supported {
type boolean;
mandatory true;
description "True if supported";
}
}
}
grouping srv6-msd-signaled {
description "SRv6 MSD signaled parameter support grouping";
container msd {
description "SRv6 signaled MSD parameter support";
leaf max-sl {
type uint8;
description "Maximum value of the SL field in the SRH of
a received packet before applying the Endpoint behavior
associated with a SID";
Raza, et al. Expires January 14, 2021 [Page 44]
Internet-Draft YANG Data Model for SRv6 July 2020
}
leaf max-end-pop {
type uint8;
description "Maximum number of SIDs in the top SRH in an
SRH stack to which the router can apply
PSP or USP flavors";
}
leaf max-h_encap {
type uint8;
description "Maximum number of SIDs that can be pushed as
part of the H.Encaps* behavior";
}
leaf max-end_d {
type uint8;
description "Maximum number of SIDs in an SRH when applying
End.D* behaviors (e.g. End.X6 and End.DT6)";
}
}
}
grouping srv6-support-security-rules {
description "SRv6 Security rules grouping";
list security-rule {
key "type";
description "Security rule support";
leaf type {
type identityref {
base srv6-types:srv6-security-type;
}
description "Security rule type";
}
leaf supported {
type boolean;
mandatory true;
description "True if supported";
}
}
}
grouping srv6-support-counters {
description "SRv6 Counters grouping";
list counters {
key "type";
description "SRv6 counter support";
Raza, et al. Expires January 14, 2021 [Page 45]
Internet-Draft YANG Data Model for SRv6 July 2020
leaf type {
type identityref {
base srv6-types:srv6-counter-type;
}
description "Counter type";
}
leaf supported {
type boolean;
mandatory true;
description "True if supported";
}
}
}
grouping srv6-state-capabilities {
description "SRv6 node capabilities grouping";
container node-capabilities {
config false;
description "Node's SRv6 capabilities";
uses srv6-support-ends;
uses srv6-support-headends;
uses srv6-msd-signaled;
uses srv6-support-security-rules;
uses srv6-support-counters;
}
}
augment "/rt:routing/sr:segment-routing" {
description
"This augments Segment Routing (SR) with SRv6.";
container srv6 {
description "Segment Routing with IPv6 dataplane";
/* config */
leaf enable {
type boolean;
default false;
description "Enable SRv6";
}
uses srv6-encap;
uses srv6-locators;
uses srv6-state-capabilities;
uses srv6-state-sid;
}
}
Raza, et al. Expires January 14, 2021 [Page 46]
Internet-Draft YANG Data Model for SRv6 July 2020
/* Notifications */
grouping srv6-locator {
description
"An absolute reference to an SRv6 locator";
leaf locator {
type leafref {
path "/rt:routing/sr:segment-routing/srv6:srv6/srv6:locators/srv6:locator/srv6:name";
}
description
"Reference to a SRv6 locator.";
}
}
notification srv6-locator-status-event {
description
"Notification event for a change of SRv6 locator operational
status.";
leaf operational-status {
type srv6-types:srv6-status-type;
description "Operational status";
}
uses srv6-locator;
}
notification srv6-sid-collision-event {
description
"Notification event for an SRv6 SID collision - i.e., attempt
to bind an already bound SID to a new context";
leaf sid {
type srv6-types:srv6-sid;
description "SRv6 SID";
}
container existing {
description "Current assignment / bind";
leaf end-behavior-type {
type identityref {
base srv6-types:srv6-endpoint-type;
}
description "End type";
}
// TODO: More
}
container requested {
description "Requested assignment / bind";
leaf end-behavior-type {
type identityref {
Raza, et al. Expires January 14, 2021 [Page 47]
Internet-Draft YANG Data Model for SRv6 July 2020
base srv6-types:srv6-endpoint-type;
}
description "End type";
}
}
}
} // module
<CODE ENDS>
Figure 6: ietf-srv6-base.yang
5.3. SRv6 Static
This YANG module imports types defined in [RFC6991], [RFC8343], and
[RFC8349].
<CODE BEGINS> file "ietf-srv6-static@2020-07-13.yang" -->
// RFC Editor: replace the above date with the date of
// publication and remove this note.
module ietf-srv6-static {
yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-srv6-static";
prefix srv6-static;
import ietf-interfaces {
prefix "if";
reference "RFC 8343: A YANG Data Model for Interface Management";
}
import ietf-inet-types {
prefix inet;
reference "RFC 6991: Common YANG Data Types";
}
import ietf-routing {
prefix "rt";
reference
"RFC 8349: A YANG Data Model for Routing Management (NMDA
version)";
}
Raza, et al. Expires January 14, 2021 [Page 48]
Internet-Draft YANG Data Model for SRv6 July 2020
import ietf-segment-routing {
prefix sr;
reference "draft-ietf-spring-sr-yang";
}
import ietf-srv6-types {
prefix srv6-types;
reference "RFC XXXX: YANG Data Model for SRv6";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
}
import ietf-srv6-base {
prefix srv6;
reference "RFC XXXX: YANG Data Model for SRv6";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
}
organization
"IETF SPRING Working Group";
contact
"WG Web: <http://tools.ietf.org/wg/spring/>
WG List: <mailto:spring@ietf.org>
Editor: Kamran Raza
<mailto:skraza@cisco.com>
Editor: Jaganbabu Rajamanickam
<maito:jrajaman@cisco.com>
Editor: Xufeng Liu
<mailto:xufeng.liu.ietf@gmail.com>
Editor: Zhibo Hu
<mailto:huzhibo@huawei.com>
Editor: Iftekhar Hussain
<mailto:IHussain@infinera.com>
Editor: Himanshu Shah
<mailto:hshah@ciena.com>
Editor: Daniel Voyer
<mailto:daniel.voyer@bell.ca>
Editor: Hani Elmalky
<mailto:helmalky@google.com>
Raza, et al. Expires January 14, 2021 [Page 49]
Internet-Draft YANG Data Model for SRv6 July 2020
Editor: Satoru Matsushima
<mailto:satoru.matsushima@gmail.com>
Editor: Katsuhiro Horiba
<mailto:katsuhiro.horiba@g.softbank.co.jp>
Editor: Ahmed AbdelSalam
<mailto:ahabdels@cisco.com>
";
description
"This YANG module defines the essential elements for the
management of Static application for Segment-Routing with
IPv6 dataplane (SRv6).
Copyright (c) 2018 IETF Trust and the persons identified as
authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject
to the license terms contained in, the Simplified BSD License
set forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents
(http://trustee.ietf.org/license-info).";
reference "RFC XXXX";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
revision 2020-07-13 {
description
"Alignment with SRv6 network programming rev16";
reference
"RFC XXXX: YANG Data Model for SRv6";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
}
revision 2019-10-30 {
description
"Extended model for EVPN behaviors";
reference
"RFC XXXX: YANG Data Model for SRv6";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
}
revision 2019-07-08 {
Raza, et al. Expires January 14, 2021 [Page 50]
Internet-Draft YANG Data Model for SRv6 July 2020
description
"Alignment with SRv6 network programming";
reference
"RFC XXXX: YANG Data Model for SRv6";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
}
revision 2018-10-22 {
description
"Initial revision.";
reference
"RFC XXXX: YANG Data Model for SRv6";
// RFC Editor: replace XXXX with actual RFC number and remove
// this note
}
/*
* Config and State
*/
grouping path-attrs-v6 {
description
"IPv6 Path properties";
leaf interface {
type if:interface-ref;
description "The outgoing interface";
}
leaf next-hop {
type inet:ipv6-address;
description "The IP address of the next-hop";
}
leaf table {
type srv6-types:table-id;
description "The routing table associated with the next-hop";
}
uses srv6:path-attrs-cmn;
}
grouping path-attrs-v4 {
description
"IPv4 Path properties";
Raza, et al. Expires January 14, 2021 [Page 51]
Internet-Draft YANG Data Model for SRv6 July 2020
leaf interface {
type if:interface-ref;
description "The outgoing interface";
}
leaf next-hop {
type inet:ipv4-address;
description "The IP address of the next-hop";
}
leaf table {
type srv6-types:table-id;
description "The routing table associated with the next-hop";
}
uses srv6:path-attrs-cmn;
}
grouping path-attrs-mpls {
description
"MPLS Path properties";
leaf interface {
type if:interface-ref;
description "The outgoing interface";
}
leaf next-hop {
type inet:ip-address;
description "The IP address of the next-hop";
}
uses srv6:path-attrs-cmn;
}
grouping multi-paths-v6 {
description "Multipath grouping";
container paths {
description "List of outgoing paths";
list path {
key path-index;
description "The list of paths associated with the SID";
leaf path-index {
type uint8;
description "Index of the path";
}
Raza, et al. Expires January 14, 2021 [Page 52]
Internet-Draft YANG Data Model for SRv6 July 2020
uses path-attrs-v6;
container sid-list {
description "SID-list associated with the path";
uses srv6:path-out-sids;
}
}
}
}
grouping multi-paths-v4 {
description "Multipath grouping";
container paths {
description "List of outgoing paths";
list path {
key path-index;
description "The list of paths associated with the SID";
leaf path-index {
type uint8;
description "Index of the path";
}
uses path-attrs-v4;
container sid-list {
description "SID-list associated with the path";
uses srv6:path-out-sids;
}
}
}
}
grouping multi-paths-mpls {
description "Multipath grouping";
container paths {
description "List of outgoing paths";
list path {
key path-index;
description "The list of paths associated with the SID";
leaf path-index {
type uint8;
description "Index of the path";
}
uses path-attrs-mpls;
container sid-list {
Raza, et al. Expires January 14, 2021 [Page 53]
Internet-Draft YANG Data Model for SRv6 July 2020
description "SID-list associated with the path";
uses srv6:path-out-sids;
}
}
}
}
grouping multi-paths-v6-BUM {
description
"Multipath grouping for EVPN bridging BUM use case";
container paths {
description
"List of outgoing paths for flooding";
list path {
key path-index;
description "The list of paths associated with the SID";
leaf path-index {
type uint8;
description "Index of the path";
}
leaf l2-interface {
type if:interface-ref;
description "The outgoing L2 interface for flooding";
}
}
}
}
grouping srv6-sid-config {
description
"Configuration parameters relating to SRv6 sid.";
leaf function {
type srv6-types:srv6-func-value;
description
"SRv6 function value.";
}
leaf end-behavior-type {
type identityref {
base srv6-types:srv6-endpoint-type;
}
mandatory true;
description
"Type of SRv6 end behavior.";
}
Raza, et al. Expires January 14, 2021 [Page 54]
Internet-Draft YANG Data Model for SRv6 July 2020
container end {
when "../end-behavior-type = 'End'" {
description
"This container is valid only when the user chooses End
behavior (variant: no PSP, no USP).";
}
description
"The Endpoint function is the most basic function.
FIB lookup on updated DA and forward accordingly
to the matched entry.
This is the SRv6 instantiation of a Prefix SID
(variant: no PSP, no USP)";
}
container end_psp {
when "../end-behavior-type = 'End_PSP'" {
description
"This container is valid only when the user chooses End
behavior (variant: PSP only).";
}
description
"The Endpoint function is the most basic function.
FIB lookup on updated DA and forward accordingly
to the matched entry.
This is the SRv6 instantiation of a Prefix SID
(variant: PSP only)";
}
container end_usp {
when "../end-behavior-type = 'End_USP'" {
description
"This container is valid only when the user chooses End
behavior (variant: USP only).";
}
description
"The Endpoint function is the most basic function.
FIB lookup on updated DA and forward accordingly
to the matched entry.
This is the SRv6 instantiation of a Prefix SID
(variant: USP only)";
}
container end_psp_usp {
when "../end-behavior-type = 'End_PSP_USP'" {
description
Raza, et al. Expires January 14, 2021 [Page 55]
Internet-Draft YANG Data Model for SRv6 July 2020
"This container is valid only when the user chooses End
behavior (variant: PSP/USP).";
}
description
"The Endpoint function is the most basic function.
FIB lookup on updated DA and forward accordingly
to the matched entry.
This is the SRv6 instantiation of a Prefix SID
(variant: PSP/USP)";
}
container end_usd {
when "../end-behavior-type = 'End_USD'" {
description
"This container is valid only when the user chooses End
behavior (variant: USD only).";
}
description
"The Endpoint function is the most basic function.
FIB lookup on updated DA and forward accordingly
to the matched entry.
This is the SRv6 instantiation of a Prefix SID
(variant: USD)";
}
container end_psp_usd {
when "../end-behavior-type = 'End_PSP_USD'" {
description
"This container is valid only when the user chooses End
behavior (variant: PSP/USD).";
}
description
"The Endpoint function is the most basic function.
FIB lookup on updated DA and forward accordingly
to the matched entry.
This is the SRv6 instantiation of a Prefix SID
(variant: PSP/USD)";
}
container end_usp_usd {
when "../end-behavior-type = 'End_USP_USD'" {
description
"This container is valid only when the user chooses End
behavior (variant: USP/USD).";
}
description
Raza, et al. Expires January 14, 2021 [Page 56]
Internet-Draft YANG Data Model for SRv6 July 2020
"The Endpoint function is the most basic function.
FIB lookup on updated DA and forward accordingly
to the matched entry.
This is the SRv6 instantiation of a Prefix SID
(variant: USP/USD)";
}
container end_psp_usp_usd {
when "../end-behavior-type = 'End_PSP_USP_IUSD'" {
description
"This container is valid only when the user chooses End
behavior (variant: PSP/USP/USD).";
}
description
"The Endpoint function is the most basic function.
FIB lookup on updated DA and forward accordingly
to the matched entry.
This is the SRv6 instantiation of a Prefix SID
(variant: PSP/USP/USD)";
}
container end-t {
when "../end-behavior-type = 'End.T'" {
description
"This container is valid only when the user chooses
End.T behavior (variant: no PSP, no USP).";
}
description
"Endpoint with specific IPv6 table lookup (variant: no PSP,
no USP).
Lookup the next segment in IPv6 table T
associated with the SID and forward via
the matched table entry.
The End.T is used for multi-table operation
in the core.";
// TODO presence "Mandatory child only if container is present";
leaf lookup-table-ipv6 {
type srv6-types:table-id;
mandatory true;
description
"Table Id for lookup on updated DA (next segment)";
}
}
container end-t_psp {
Raza, et al. Expires January 14, 2021 [Page 57]
Internet-Draft YANG Data Model for SRv6 July 2020
when "../end-behavior-type = 'End.T_PSP'" {
description
"This container is valid only when the user chooses
End.T behavior (variant: PSP only).";
}
description
"Endpoint with specific IPv6 table lookup (variant: PSP only).
Lookup the next segment in IPv6 table T
associated with the SID and forward via
the matched table entry.
The End.T is used for multi-table operation
in the core.";
// TODO presence "Mandatory child only if container is present";
leaf lookup-table-ipv6 {
type srv6-types:table-id;
mandatory true;
description
"Table Id for lookup on updated DA (next segment)";
}
}
container end-t_usp {
when "../end-behavior-type = 'End.T_USP'" {
description
"This container is valid only when the user chooses
End.T behavior (variant: USP only).";
}
description
"Endpoint with specific IPv6 table lookup (variant: USP only).
Lookup the next segment in IPv6 table T
associated with the SID and forward via
the matched table entry.
The End.T is used for multi-table operation
in the core.";
// TODO presence "Mandatory child only if container is present";
leaf lookup-table-ipv6 {
type srv6-types:table-id;
mandatory true;
description
"Table Id for lookup on updated DA (next segment)";
}
}
Raza, et al. Expires January 14, 2021 [Page 58]
Internet-Draft YANG Data Model for SRv6 July 2020
container end-t_psp_usp {
when "../end-behavior-type = 'End.T_PSP_USP'" {
description
"This container is valid only when the user chooses
End.T behavior (variant: USP/PSP).";
}
description
"Endpoint with specific IPv6 table lookup (variant: USP/PSP).
Lookup the next segment in IPv6 table T
associated with the SID and forward via
the matched table entry.
The End.T is used for multi-table operation
in the core.";
// TODO presence "Mandatory child only if container is present";
leaf lookup-table-ipv6 {
type srv6-types:table-id;
mandatory true;
description
"Table Id for lookup on updated DA (next segment)";
}
}
container end-t_usd {
when "../end-behavior-type = 'End.T_USD'" {
description
"This container is valid only when the user chooses
End.T behavior (variant: USD only).";
}
description
"Endpoint with specific IPv6 table lookup (variant: USD only).
Lookup the next segment in IPv6 table T
associated with the SID and forward via
the matched table entry.
The End.T is used for multi-table operation
in the core.";
// TODO presence "Mandatory child only if container is present";
leaf lookup-table-ipv6 {
type srv6-types:table-id;
mandatory true;
description
"Table Id for lookup on updated DA (next segment)";
}
}
Raza, et al. Expires January 14, 2021 [Page 59]
Internet-Draft YANG Data Model for SRv6 July 2020
container end-t_psp_usd {
when "../end-behavior-type = 'End.T_PSP_USD'" {
description
"This container is valid only when the user chooses
End.T behavior (variant: PSP/USD only).";
}
description
"Endpoint with specific IPv6 table lookup (variant: PSP/USD
only).
Lookup the next segment in IPv6 table T
associated with the SID and forward via
the matched table entry.
The End.T is used for multi-table operation
in the core.";
// TODO presence "Mandatory child only if container is present";
leaf lookup-table-ipv6 {
type srv6-types:table-id;
mandatory true;
description
"Table Id for lookup on updated DA (next segment)";
}
}
container end-t_usp_usd {
when "../end-behavior-type = 'End.T_USP_USD'" {
description
"This container is valid only when the user chooses
End.T behavior (variant: USP/USD only).";
}
description
"Endpoint with specific IPv6 table lookup (variant:
USP/USD only).
Lookup the next segment in IPv6 table T
associated with the SID and forward via
the matched table entry.
The End.T is used for multi-table operation
in the core.";
// TODO presence "Mandatory child only if container is present";
leaf lookup-table-ipv6 {
type srv6-types:table-id;
mandatory true;
description
"Table Id for lookup on updated DA (next segment)";
}
Raza, et al. Expires January 14, 2021 [Page 60]
Internet-Draft YANG Data Model for SRv6 July 2020
}
container end-t_psp_usp_usd {
when "../end-behavior-type = 'End.T_PSP_USP_USD'" {
description
"This container is valid only when the user chooses
End.T behavior (variant: USP only).";
}
description
"Endpoint with specific IPv6 table lookup (variant:
PSP/USP/USD only).
Lookup the next segment in IPv6 table T
associated with the SID and forward via
the matched table entry.
The End.T is used for multi-table operation
in the core.";
// TODO presence "Mandatory child only if container is present";
leaf lookup-table-ipv6 {
type srv6-types:table-id;
mandatory true;
description
"Table Id for lookup on updated DA (next segment)";
}
}
container end-x {
when "../end-behavior-type = 'End.X'" {
description
"This container is valid only when the user chooses
End.X behavior (variant: no USP/PSP)";
}
description
"Endpoint with cross-connect to an array of
layer-3 adjacencies (variant: no USP/PSP).
Forward to layer-3 adjacency bound to the SID S.
The End.X function is required to express any
traffic-engineering policy.";
leaf protected {
type boolean;
default false;
description "Is Adj-SID protected?";
}
uses multi-paths-v6;
}
Raza, et al. Expires January 14, 2021 [Page 61]
Internet-Draft YANG Data Model for SRv6 July 2020
container end-x_psp {
when "../end-behavior-type = 'End.X_PSP'" {
description
"This container is valid only when the user chooses
End.X behavior (variant: PSP only)";
}
description
"Endpoint with cross-connect to an array of
layer-3 adjacencies (variant: PSP only).
Forward to layer-3 adjacency bound to the SID S.
The End.X function is required to express any
traffic-engineering policy.";
leaf protected {
type boolean;
default false;
description "Is Adj-SID protected?";
}
uses multi-paths-v6;
}
container end-x_usp {
when "../end-behavior-type = 'End.X_USP'" {
description
"This container is valid only when the user chooses
End.X behavior (variant: USP only)";
}
description
"Endpoint with cross-connect to an array of
layer-3 adjacencies (variant: USP only).
Forward to layer-3 adjacency bound to the SID S.
The End.X function is required to express any
traffic-engineering policy.";
leaf protected {
type boolean;
default false;
description "Is Adj-SID protected?";
}
uses multi-paths-v6;
}
container end-x_psp_usp {
when "../end-behavior-type = 'End.X_PSP_USP'" {
description
"This container is valid only when the user chooses
Raza, et al. Expires January 14, 2021 [Page 62]
Internet-Draft YANG Data Model for SRv6 July 2020
End.X behavior (variant: PSP/USP)";
}
description
"Endpoint with cross-connect to an array of
layer-3 adjacencies (variant: PSP/USP).
Forward to layer-3 adjacency bound to the SID S.
The End.X function is required to express any
traffic-engineering policy.";
leaf protected {
type boolean;
default false;
description "Is Adj-SID protected?";
}
uses multi-paths-v6;
}
container end-x_usd {
when "../end-behavior-type = 'End.X_USD'" {
description
"This container is valid only when the user chooses
End.X behavior (variant: USD only)";
}
description
"Endpoint with cross-connect to an array of
layer-3 adjacencies (variant: PSP/USP).
Forward to layer-3 adjacency bound to the SID S.
The End.X function is required to express any
traffic-engineering policy.";
leaf protected {
type boolean;
default false;
description "Is Adj-SID protected?";
}
uses multi-paths-v6;
}
container end-x_psp_usd {
when "../end-behavior-type = 'End.X_PSP_USD'" {
description
"This container is valid only when the user chooses
End.X behavior (variant: PSP/USD only)";
}
description
Raza, et al. Expires January 14, 2021 [Page 63]
Internet-Draft YANG Data Model for SRv6 July 2020
"Endpoint with cross-connect to an array of
layer-3 adjacencies (variant: PSP/USP).
Forward to layer-3 adjacency bound to the SID S.
The End.X function is required to express any
traffic-engineering policy.";
leaf protected {
type boolean;
default false;
description "Is Adj-SID protected?";
}
uses multi-paths-v6;
}
container end-x_usp_usd {
when "../end-behavior-type = 'End.X_USP_USD'" {
description
"This container is valid only when the user chooses
End.X behavior (variant: USP/USD only)";
}
description
"Endpoint with cross-connect to an array of
layer-3 adjacencies (variant: PSP/USP).
Forward to layer-3 adjacency bound to the SID S.
The End.X function is required to express any
traffic-engineering policy.";
leaf protected {
type boolean;
default false;
description "Is Adj-SID protected?";
}
uses multi-paths-v6;
}
container end-x_psp_usp_usd {
when "../end-behavior-type = 'End.X_PSP_USP_USD'" {
description
"This container is valid only when the user chooses
End.X behavior (variant: PSP/USP/USD only)";
}
description
"Endpoint with cross-connect to an array of
layer-3 adjacencies (variant: PSP/USP).
Forward to layer-3 adjacency bound to the SID S.
The End.X function is required to express any
Raza, et al. Expires January 14, 2021 [Page 64]
Internet-Draft YANG Data Model for SRv6 July 2020
traffic-engineering policy.";
leaf protected {
type boolean;
default false;
description "Is Adj-SID protected?";
}
uses multi-paths-v6;
}
container end-b6-encaps {
when "../end-behavior-type = 'End.B6.Encaps' or
../end-behavior-type = 'End.B6.Encaps.Red'" {
description
"This container is valid only when the user chooses
End.B6.Encaps or End.B6.Encaps.Red behavior.";
}
description
"Endpoint bound to an SRv6 Policy.
Insert SRH based on the policy and forward the
packet toward the first hop configured in the policy.
This is the SRv6 instantiation of a Binding SID.
This behavior also adds an outer IPv6 header";
// TODO presence "Mandatory child only if container is present";
leaf policy-name {
type string;
mandatory true;
description "SRv6 policy name.";
}
leaf source-address {
type inet:ipv6-address;
mandatory true;
description
"IPv6 source address for Encap.";
}
uses multi-paths-v6;
}
container end-bm {
when "../end-behavior-type = 'End.BM'" {
description
"This container is valid only when the user chooses
End.BM behavior.";
}
Raza, et al. Expires January 14, 2021 [Page 65]
Internet-Draft YANG Data Model for SRv6 July 2020
description
"Endpoint bound to an SR-MPLS Policy.
push an MPLS label stack <L1, L2, L3> on the
received packet and forward the according to
Lable L1.
This is an SRv6 instantiation of an SR-MPLS Binding SID.";
// TODO presence "Mandatory child only if container is present";
leaf policy-name {
type string;
mandatory true;
description "SRv6 policy name";
}
uses multi-paths-mpls;
}
container end-dx6 {
when "../end-behavior-type = 'End.DX6'" {
description
"This container is valid only when the user chooses
End.DX6 behavior.";
}
description
"Endpoint with decapsulation and cross-connect to
an array of IPv6 adjacencies. Pop the (outer)
IPv6 header and its extension headers and forward
to layer-3 adjacency bound to the SID S.
The End.DX6 used in the L3VPN use-case.";
uses multi-paths-v6;
// TODO: Backup path of type "Lookup in table"
}
container end-dx4 {
when "../end-behavior-type = 'End.DX4'" {
description
"This container is valid only when the user chooses
End.DX4 behavior.";
}
description
"Endpoint with decapsulation and cross-connect to
an array of IPv4 adjacencies.
Pop the (outer) IPv6 header and its extension
header and forward to layer-3 adjacency bound
to the SID S.
This would be equivalent to the per-CE VPN
label in MPLS.";
Raza, et al. Expires January 14, 2021 [Page 66]
Internet-Draft YANG Data Model for SRv6 July 2020
uses multi-paths-v4;
// TODO: Backup path of type "Lookup in table"
}
container end-dt6 {
when "../end-behavior-type = 'End.DT6'" {
description
"This container is valid only when the user chooses
End.DT6 behavior.";
}
description
"Endpoint with decapsulation and specific IPv6 table
lookup.
Pop the (outer) IPv6 header and its extension
headers.
Lookup the exposed inner IPv6 DA in IPv6
table T and forward via the matched table entry.
End.DT6 function is used in L3VPN use-case.";
// TODO presence "Mandatory child only if container is present";
leaf lookup-table-ipv6 {
type srv6-types:table-id;
mandatory true;
description "IPv6 table";
}
}
container end-dt4 {
when "../end-behavior-type = 'End.DT4'" {
description
"This container is valid only when the user chooses
End.DT4 behavior.";
}
description
"Endpoint with decapsulation and specific
IPv4 table lookup.
Pop the (outer) IPv6 header and its extension
headers.
Lookup the exposed inner IPv4 DA in IPv4
table T and forward via the matched table entry.
This would be equivalent to the per-VRF VPN label
in MPLS.";
// TODO presence "Mandatory child only if container is present";
leaf lookup-table-ipv4 {
type srv6-types:table-id;
mandatory true;
description "IPv4 table";
Raza, et al. Expires January 14, 2021 [Page 67]
Internet-Draft YANG Data Model for SRv6 July 2020
}
}
container end-dt46 {
when "../end-behavior-type = 'End.DT46'" {
description
"This container is valid only when the user chooses
End.DT46 behavior.";
}
description
"Endpoint with decapsulation and specific
IP table lookup.
Depending on the protocol type (IPv4 or IPv6)
of the inner ip packet and the specific VRF name
forward the packet.
This would be equivalent to the per-VRF VPN
label in MPLS.";
// TODO presence "Mandatory child only if container is present";
leaf lookup-table-ipv4 {
type srv6-types:table-id;
mandatory true;
description "IPv4 table";
}
leaf lookup-table-ipv6 {
type srv6-types:table-id;
mandatory true;
description "IPv6 table";
}
}
/* EVPN END behavior types */
container end-dx2 {
when "../end-behavior-type = 'End.DX2'" {
description
"This container is valid only when the user chooses
End.DX2 behavior.";
}
description
"This is an Endpoint with decapsulation and Layer-2
cross-connect to OIF.
Pop the (outer) IPv6 header and its extension headers.
Forward the resulting frame via OIF associated to the SID.
The End.DX2 function is the L2VPN/EVPN VPWS use-case.";
container path {
description "Outgoing path";
leaf l2-interface {
Raza, et al. Expires January 14, 2021 [Page 68]
Internet-Draft YANG Data Model for SRv6 July 2020
type if:interface-ref;
mandatory true;
description "Outgoing L2 interface";
}
}
}
container end-dx2v {
when "../end-behavior-type = 'End.DX2V'" {
description
"This container is valid only when the user chooses
End.DX2V behavior.";
}
description
"Endpoint with decapsulation and specific VLAN
L2 table lookup.
Pop the (outer) IPv6 header and its extension headers.
Lookup the exposed inner VLANs in L2 table T.
Forward via the matched table entry.
The End.DX2V is used for EVPN Flexible cross-connect
use-cases";
leaf lookup-table-vlan {
type srv6-types:table-id;
mandatory true;
description
"VLAN lookup table. There could be multiple
vlan demux tables on the node, where a DX2V SID
points to one vlan table";
}
}
container end-dt2u {
when "../end-behavior-type = 'End.DT2U'" {
description
"This container is valid only when the user chooses
End.DT2U behavior.";
}
description
"Endpoint with decapsulation and specific
unicast L2 MAC table lookup.
Pop the (outer) IPv6 header and its extension headers.
Learn the exposed inner MAC SA in L2 MAC table T.
Lookup the exposed inner MAC DA in L2 MAC table T.
Forward via the matched T entry else to all L2OIF in T.
The End.DT2U is used for EVPN Bridging unicast use cases";
leaf lookup-table-mac {
Raza, et al. Expires January 14, 2021 [Page 69]
Internet-Draft YANG Data Model for SRv6 July 2020
type srv6-types:table-id;
mandatory true;
description "MAC L2 lookup table";
}
}
container end-dt2m {
when "../end-behavior-type = 'End.DT2M'" {
description
"This container is valid only when the user chooses
End.DT2M behavior.";
}
description
"Endpoint with decapsulation and specific flooding table.
Pop the (outer) IPv6 header and its extension headers.
Learn the exposed inner MAC SA in L2 MAC table T.
Forward on all L2OIF (in the flooding table) excluding the one
identfied by Arg.FE2.
The End.DT2M is used for EVPN Bridging BUM use case with
ESI (Split Horizon) filtering capability.";
leaf flooding-table {
type srv6-types:table-id;
mandatory true;
description "L2 Flooding table (list of OIFs)";
}
uses multi-paths-v6-BUM;
/* TODO - Support for argument Arg.FE2. It is an argument specific
to EVPN ESI filtering and EVPN-ETREE used to exclude specific
OIF (or set of OIFs) from flooding table. */
}
/* End of EVPN END behavior types */
}
grouping srv6-static-cfg {
description
"Grouping configuration and operation for SRv6 sid.";
list sid {
key "function";
description "List of locally instantiated SIDs";
uses srv6-sid-config;
}
}
Raza, et al. Expires January 14, 2021 [Page 70]
Internet-Draft YANG Data Model for SRv6 July 2020
augment "/rt:routing/sr:segment-routing/srv6:srv6/srv6:locators/srv6:locator" {
description
"This augments locator leaf within SRv6.";
container static {
description "Static SRv6";
/* Local SIDs */
container local-sids {
description
"SRv6-static locally instantiated SIDs";
uses srv6-static-cfg;
/* no state for now; SID state accessible through base model */
}
}
}
} // module
<CODE ENDS>
Figure 7: ietf-srv6-static.yang
6. Security Considerations
The YANG module specified in this document defines a schema for data
that is designed to be accessed via network management protocols such
as NETCONF [RFC6241] or RESTCONF [RFC8040]. The lowest NETCONF layer
is the secure transport layer, and the mandatory-to-implement secure
transport is Secure Shell (SSH) [RFC6242]. The lowest RESTCONF layer
is HTTPS, and the mandatory-to-implement secure transport is TLS
[RFC8446].
The Network Configuration Access Control Model (NACM) [RFC8341]
provides the means to restrict access for particular NETCONF or
RESTCONF users to a preconfigured subset of all available NETCONF or
RESTCONF protocol operations and content.
There are a number of data nodes defined in this YANG module that are
writable/creatable/ deletable (i.e., config true, which is the
default). These data nodes may be considered sensitive or vulnerable
in some network environments. Write operations (e.g., edit-config)
to these data nodes without proper protection can have a negative
effect on network operations.
Raza, et al. Expires January 14, 2021 [Page 71]
Internet-Draft YANG Data Model for SRv6 July 2020
Some of the readable data nodes in this YANG module may be considered
sensitive or vulnerable in some network environments. It is thus
important to control read access (e.g., via get, get-config, or
notification) to these data nodes.
It goes without saying that this specification also inherits the
security considerations captured in the SRv6 specification document
[I-D.ietf-spring-srv6-network-programming].
7. IANA Considerations
This document requests the registration of the following URIs in the
IETF "XML registry" [RFC3688]:
+-----------------------------------------------+------------+------+
| URI | Registrant | XML |
+-----------------------------------------------+------------+------+
| urn:ietf:params:xml:ns:yang:ietf-srv6-types | The IESG | N/A |
| | | |
| urn:ietf:params:xml:ns:yang:ietf-srv6-base | The IESG | N/A |
| urn:ietf:params:xml:ns:yang:ietf-srv6-static | The IESG | N/A |
+-----------------------------------------------+------------+------+
This document requests the registration of the following YANG modules
in the "YANG Module Names" registry [RFC6020]:
+-------------+--------------------------------+----------+---------+
| Name | Namespace | Prefix | Referen |
| | | | ce |
+-------------+--------------------------------+----------+---------+
| ietf- | urn:ietf:params:xml:ns:yang | srv6-typ | This do |
| srv6-types | :ietf-srv6-types | es | cument |
| | | | |
| ietf- | urn:ietf:params:xml:ns:yang | srv6 | This do |
| srv6-base | :ietf-srv6-base | | cument |
| | | | |
| ietf- | urn:ietf:params:xml:ns:yang | srv6-sta | This do |
| srv6-static | :ietf-srv6-static | tic | cument |
+-------------+--------------------------------+----------+---------+
-- RFC Editor: Replace "This document" with the document RFC number
at time of publication, and remove this note.
8. Acknowledgments
The authors would like to acknowledge Darren Dukes, Les Ginsberg,
Ahmed Bashandy, Rajesh Venkateswaran, and Mike Mallin for their
review of some of the contents in this draft.
Raza, et al. Expires January 14, 2021 [Page 72]
Internet-Draft YANG Data Model for SRv6 July 2020
9. References
9.1. Normative References
[I-D.ietf-spring-sr-yang]
Litkowski, S., Qu, Y., Lindem, A., Sarkar, P., and J.
Tantsura, "YANG Data Model for Segment Routing", draft-
ietf-spring-sr-yang-17 (work in progress), July 2020.
[I-D.ietf-spring-srv6-network-programming]
Filsfils, C., Camarillo, P., Leddy, J., Voyer, D.,
Matsushima, S., and Z. Li, "SRv6 Network Programming",
draft-ietf-spring-srv6-network-programming-16 (work in
progress), June 2020.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997,
<https://www.rfc-editor.org/info/rfc2119>.
[RFC3688] Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688,
DOI 10.17487/RFC3688, January 2004,
<https://www.rfc-editor.org/info/rfc3688>.
[RFC6020] Bjorklund, M., Ed., "YANG - A Data Modeling Language for
the Network Configuration Protocol (NETCONF)", RFC 6020,
DOI 10.17487/RFC6020, October 2010,
<https://www.rfc-editor.org/info/rfc6020>.
[RFC6241] Enns, R., Ed., Bjorklund, M., Ed., Schoenwaelder, J., Ed.,
and A. Bierman, Ed., "Network Configuration Protocol
(NETCONF)", RFC 6241, DOI 10.17487/RFC6241, June 2011,
<https://www.rfc-editor.org/info/rfc6241>.
[RFC6242] Wasserman, M., "Using the NETCONF Protocol over Secure
Shell (SSH)", RFC 6242, DOI 10.17487/RFC6242, June 2011,
<https://www.rfc-editor.org/info/rfc6242>.
[RFC6991] Schoenwaelder, J., Ed., "Common YANG Data Types",
RFC 6991, DOI 10.17487/RFC6991, July 2013,
<https://www.rfc-editor.org/info/rfc6991>.
[RFC8040] Bierman, A., Bjorklund, M., and K. Watsen, "RESTCONF
Protocol", RFC 8040, DOI 10.17487/RFC8040, January 2017,
<https://www.rfc-editor.org/info/rfc8040>.
Raza, et al. Expires January 14, 2021 [Page 73]
Internet-Draft YANG Data Model for SRv6 July 2020
[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
May 2017, <https://www.rfc-editor.org/info/rfc8174>.
[RFC8294] Liu, X., Qu, Y., Lindem, A., Hopps, C., and L. Berger,
"Common YANG Data Types for the Routing Area", RFC 8294,
DOI 10.17487/RFC8294, December 2017,
<https://www.rfc-editor.org/info/rfc8294>.
[RFC8340] Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams",
BCP 215, RFC 8340, DOI 10.17487/RFC8340, March 2018,
<https://www.rfc-editor.org/info/rfc8340>.
[RFC8341] Bierman, A. and M. Bjorklund, "Network Configuration
Access Control Model", STD 91, RFC 8341,
DOI 10.17487/RFC8341, March 2018,
<https://www.rfc-editor.org/info/rfc8341>.
[RFC8342] Bjorklund, M., Schoenwaelder, J., Shafer, P., Watsen, K.,
and R. Wilton, "Network Management Datastore Architecture
(NMDA)", RFC 8342, DOI 10.17487/RFC8342, March 2018,
<https://www.rfc-editor.org/info/rfc8342>.
[RFC8343] Bjorklund, M., "A YANG Data Model for Interface
Management", RFC 8343, DOI 10.17487/RFC8343, March 2018,
<https://www.rfc-editor.org/info/rfc8343>.
[RFC8349] Lhotka, L., Lindem, A., and Y. Qu, "A YANG Data Model for
Routing Management (NMDA Version)", RFC 8349,
DOI 10.17487/RFC8349, March 2018,
<https://www.rfc-editor.org/info/rfc8349>.
[RFC8402] Filsfils, C., Ed., Previdi, S., Ed., Ginsberg, L.,
Decraene, B., Litkowski, S., and R. Shakir, "Segment
Routing Architecture", RFC 8402, DOI 10.17487/RFC8402,
July 2018, <https://www.rfc-editor.org/info/rfc8402>.
[RFC8407] Bierman, A., "Guidelines for Authors and Reviewers of
Documents Containing YANG Data Models", BCP 216, RFC 8407,
DOI 10.17487/RFC8407, October 2018,
<https://www.rfc-editor.org/info/rfc8407>.
[RFC8446] Rescorla, E., "The Transport Layer Security (TLS) Protocol
Version 1.3", RFC 8446, DOI 10.17487/RFC8446, August 2018,
<https://www.rfc-editor.org/info/rfc8446>.
Raza, et al. Expires January 14, 2021 [Page 74]
Internet-Draft YANG Data Model for SRv6 July 2020
9.2. Informative References
[I-D.ietf-dmm-srv6-mobile-uplane]
Matsushima, S., Filsfils, C., Kohno, M., Camarillo, P.,
Voyer, D., and C. Perkins, "Segment Routing IPv6 for
Mobile User Plane", draft-ietf-dmm-srv6-mobile-uplane-08
(work in progress), June 2020.
[I-D.ietf-spring-sr-service-programming]
Clad, F., Xu, X., Filsfils, C., daniel.bernier@bell.ca,
d., Li, C., Decraene, B., Ma, S., Yadlapalli, C.,
Henderickx, W., and S. Salsano, "Service Programming with
Segment Routing", draft-ietf-spring-sr-service-
programming-02 (work in progress), March 2020.
[RFC8754] Filsfils, C., Ed., Dukes, D., Ed., Previdi, S., Leddy, J.,
Matsushima, S., and D. Voyer, "IPv6 Segment Routing Header
(SRH)", RFC 8754, DOI 10.17487/RFC8754, March 2020,
<https://www.rfc-editor.org/info/rfc8754>.
Authors' Addresses
Kamran Raza
Cisco Systems
Email: skraza@cisco.com
Sonal Agarwal
Cisco Systems
Email: agarwaso@cisco.com
Xufeng Liu
Volta Networks
Email: xufeng.liu.ietf@gmail.com
Zhibo Hu
Huawei Technologies
Email: huzhibo@huawei.com
Raza, et al. Expires January 14, 2021 [Page 75]
Internet-Draft YANG Data Model for SRv6 July 2020
Iftekhar Hussain
Infinera Corporation
Email: IHussain@infinera.com
Himanshu Shah
Ciena Corporation
Email: hshah@ciena.com
Daniel Voyer
Bell Canada
Email: daniel.voyer@bell.ca
Hani Elmalky
Individual
Email: helmalky@google.com
Satoru Matsushima
SoftBank
Email: satoru.matsushima@g.softbank.co.jp
Katsuhiro Horiba
SoftBank
Email: katsuhiro.horiba@g.softbank.co.jp
Jaganbabu Rajamanickam
Cisco Systems
Email: jrajaman@cisco.com
Ahmed AbdelSalam
Cisco Systems
Email: ahabdels@cisco.com
Raza, et al. Expires January 14, 2021 [Page 76]
