< draft-ietf-spring-sr-yang-12.txt   draft-ietf-spring-sr-yang-13.txt >
SPRING Working Group S. Litkowski SPRING Working Group S. Litkowski
Internet-Draft Orange Business Service Internet-Draft Orange Business Service
Intended status: Standards Track Y. Qu Intended status: Standards Track Y. Qu
Expires: September 1, 2019 Huawei Expires: January 8, 2020 Futurewei
A. Lindem A. Lindem
Cisco Cisco
P. Sarkar P. Sarkar
Individual Individual
J. Tantsura J. Tantsura
Apstra Apstra
February 28, 2019 July 7, 2019
YANG Data Model for Segment Routing YANG Data Model for Segment Routing
draft-ietf-spring-sr-yang-12 draft-ietf-spring-sr-yang-13
Abstract Abstract
This document defines a YANG data model ([RFC6020], [RFC7950]) for This document defines a YANG data model ([RFC6020], [RFC7950]) for
segment routing ([RFC8402]) configuration and operation. This YANG segment routing ([RFC8402]) configuration and operation. This YANG
model is intended to be used on network elements to configure or model is intended to be used on network elements to configure or
operate segment routing. This document defines also generic operate segment routing. This document defines also generic
containers that SHOULD be reused by IGP protocol modules to support containers that SHOULD be reused by IGP protocol modules to support
segment routing. segment routing.
Status of This Memo Status of This Memo
This Internet-Draft is submitted in full conformance with the This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79. provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/. Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on September 1, 2019. This Internet-Draft will expire on January 8, 2020.
Copyright Notice Copyright Notice
Copyright (c) 2019 IETF Trust and the persons identified as the Copyright (c) 2019 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License. described in the Simplified BSD License.
Table of Contents Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
skipping to change at page 2, line 32 skipping to change at page 2, line 32
4. Configuration . . . . . . . . . . . . . . . . . . . . . . . . 5 4. Configuration . . . . . . . . . . . . . . . . . . . . . . . . 5
5. IGP Control plane configuration . . . . . . . . . . . . . . . 6 5. IGP Control plane configuration . . . . . . . . . . . . . . . 6
5.1. IGP interface configuration . . . . . . . . . . . . . . . 7 5.1. IGP interface configuration . . . . . . . . . . . . . . . 7
5.1.1. Adjacency SID properties . . . . . . . . . . . . . . 7 5.1.1. Adjacency SID properties . . . . . . . . . . . . . . 7
5.1.1.1. Bundling . . . . . . . . . . . . . . . . . . . . 7 5.1.1.1. Bundling . . . . . . . . . . . . . . . . . . . . 7
5.1.1.2. Protection . . . . . . . . . . . . . . . . . . . 8 5.1.1.2. Protection . . . . . . . . . . . . . . . . . . . 8
6. States . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6. States . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7. Notifications . . . . . . . . . . . . . . . . . . . . . . . . 8 7. Notifications . . . . . . . . . . . . . . . . . . . . . . . . 8
8. YANG Module . . . . . . . . . . . . . . . . . . . . . . . . . 8 8. YANG Module . . . . . . . . . . . . . . . . . . . . . . . . . 8
9. Security Considerations . . . . . . . . . . . . . . . . . . . 25 9. Security Considerations . . . . . . . . . . . . . . . . . . . 25
10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 25 10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 26
11. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 25 11. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 26
12. References . . . . . . . . . . . . . . . . . . . . . . . . . 25 12. References . . . . . . . . . . . . . . . . . . . . . . . . . 27
12.1. Normative References . . . . . . . . . . . . . . . . . . 25 12.1. Normative References . . . . . . . . . . . . . . . . . . 27
12.2. Informative References . . . . . . . . . . . . . . . . . 26 12.2. Informative References . . . . . . . . . . . . . . . . . 28
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 27 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 28
1. Introduction 1. Introduction
This document defines a YANG data model for segment routing This document defines a YANG data model for segment routing
configuration and operation. This document does not define the IGP configuration and operation. This document does not define the IGP
extensions to support segment routing but defines generic groupings extensions to support segment routing but defines generic groupings
that SHOULD be reused by IGP extension modules. The reason of this that SHOULD be reused by IGP extension modules. The reason of this
design choice is to not require implementations to support all IGP design choice is to not require implementations to support all IGP
extensions. For example, an implementation may support IS-IS extensions. For example, an implementation may support IS-IS
extension but not OSPF. extension but not OSPF.
skipping to change at page 8, line 51 skipping to change at page 8, line 51
advertised index fall outside the range of SRGBs configured for advertised index fall outside the range of SRGBs configured for
the network device. the network device.
8. YANG Module 8. YANG Module
The following RFCs and drafts are not referenced in the document text The following RFCs and drafts are not referenced in the document text
but are referenced in the ietf-segment-rouuting-common.yang and/or but are referenced in the ietf-segment-rouuting-common.yang and/or
ietf-segment-routing.yang module: [RFC6991], [RFC8294], [RFC8476], ietf-segment-routing.yang module: [RFC6991], [RFC8294], [RFC8476],
and [RFC8491]. and [RFC8491].
<CODE BEGINS> file "ietf-segment-routing-common@2019-02-28.yang" <CODE BEGINS> file "ietf-segment-routing-common@2019-07-06.yang"
module ietf-segment-routing-common { module ietf-segment-routing-common {
yang-version 1.1; yang-version 1.1;
namespace namespace
"urn:ietf:params:xml:ns:yang:ietf-segment-routing-common"; "urn:ietf:params:xml:ns:yang:ietf-segment-routing-common";
prefix sr-cmn; prefix sr-cmn;
import ietf-inet-types { import ietf-inet-types {
prefix inet; prefix inet;
} }
organization organization
"IETF SPRING - SPRING Working Group"; "IETF SPRING - SPRING Working Group";
contact contact
"WG Web: <http://tools.ietf.org/wg/spring/> "WG Web: <http://tools.ietf.org/wg/spring/>
WG List: <mailto:spring@ietf.org> WG List: <mailto:spring@ietf.org>
Editor: Stephane Litkowski Editor: Stephane Litkowski
<mailto:stephane.litkowski@orange.com> <mailto:stephane.litkowski@orange.com>
Editor: Yingzhen Qu Editor: Yingzhen Qu
<mailto:yingzhen.qu@huawei.com> <mailto:yingzhen.qu@futurewei.com>
Author: Acee Lindem Author: Acee Lindem
<mailto:acee@cisco.com> <mailto:acee@cisco.com>
Author: Pushpasis Sarkar Author: Pushpasis Sarkar
<mailto:pushpasis.ietf@gmail.com> <mailto:pushpasis.ietf@gmail.com>
Author: Jeff Tantsura Author: Jeff Tantsura
<jefftant.ietf@gmail.com> <jefftant.ietf@gmail.com>
"; ";
description description
skipping to change at page 10, line 4 skipping to change at page 10, line 4
without modification, is permitted pursuant to, and subject without modification, is permitted pursuant to, and subject
to the license terms contained in, the Simplified BSD License to the license terms contained in, the Simplified BSD License
set forth in Section 4.c of the IETF Trust's Legal Provisions set forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents Relating to IETF Documents
(http://trustee.ietf.org/license-info). (http://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC XXXX; This version of this YANG module is part of RFC XXXX;
see the RFC itself for full legal notices."; see the RFC itself for full legal notices.";
reference "RFC XXXX"; reference "RFC XXXX";
revision 2019-02-28 { revision 2019-07-06 {
description description
"Initial version"; "Initial version";
reference "RFC XXXX: YANG Data Model for Segment Routing."; reference "RFC XXXX: YANG Data Model for Segment Routing.";
} }
feature sid-last-hop-behavior { feature sid-last-hop-behavior {
description description
"Configurable last hop behavior."; "Configurable last hop behavior.";
} }
skipping to change at page 14, line 30 skipping to change at page 14, line 30
leaf algorithm { leaf algorithm {
type identityref { type identityref {
base prefix-sid-algorithm; base prefix-sid-algorithm;
} }
description description
"Prefix-sid algorithm."; "Prefix-sid algorithm.";
} }
} }
} }
<CODE ENDS> <CODE ENDS>
<CODE BEGINS> file "ietf-segment-routing@2019-02-28.yang" <CODE BEGINS> file "ietf-segment-routing@2019-07-06.yang"
module ietf-segment-routing { module ietf-segment-routing {
yang-version 1.1; yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-segment-routing"; namespace "urn:ietf:params:xml:ns:yang:ietf-segment-routing";
prefix sr; prefix sr;
import ietf-inet-types { import ietf-inet-types {
prefix inet; prefix inet;
} }
import ietf-routing { import ietf-routing {
prefix rt; prefix rt;
skipping to change at page 15, line 13 skipping to change at page 15, line 13
} }
organization organization
"IETF SPRING - SPRING Working Group"; "IETF SPRING - SPRING Working Group";
contact contact
"WG Web: <http://tools.ietf.org/wg/spring/> "WG Web: <http://tools.ietf.org/wg/spring/>
WG List: <mailto:spring@ietf.org> WG List: <mailto:spring@ietf.org>
Editor: Stephane Litkowski Editor: Stephane Litkowski
<mailto:stephane.litkowski@orange.com> <mailto:stephane.litkowski@orange.com>
Editor: Yingzhen Qu Editor: Yingzhen Qu
<mailto:yingzhen.qu@huawei.com> <mailto:yingzhen.qu@futurewei.com>
Author: Acee Lindem Author: Acee Lindem
<mailto:acee@cisco.com> <mailto:acee@cisco.com>
Author: Pushpasis Sarkar Author: Pushpasis Sarkar
<mailto:pushpasis.ietf@gmail.com> <mailto:pushpasis.ietf@gmail.com>
Author: Jeff Tantsura Author: Jeff Tantsura
<jefftant.ietf@gmail.com> <jefftant.ietf@gmail.com>
"; ";
description description
skipping to change at page 15, line 43 skipping to change at page 15, line 43
to the license terms contained in, the Simplified BSD License to the license terms contained in, the Simplified BSD License
set forth in Section 4.c of the IETF Trust's Legal Provisions set forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents Relating to IETF Documents
(http://trustee.ietf.org/license-info). (http://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC XXXX; This version of this YANG module is part of RFC XXXX;
see the RFC itself for full legal notices."; see the RFC itself for full legal notices.";
reference "RFC XXXX"; reference "RFC XXXX";
revision 2019-02-28 { revision 2019-07-06 {
description description
"Initial Version"; "Initial Version";
reference "RFC XXXX: YANG Data Model for Segment Routing."; reference "RFC XXXX: YANG Data Model for Segment Routing.";
} }
feature mapping-server { feature mapping-server {
description description
"Support for Segment Routing Mapping Server (SRMS)."; "Support for Segment Routing Mapping Server (SRMS).";
} }
feature protocol-srgb { feature protocol-srgb {
description description
skipping to change at page 17, line 30 skipping to change at page 17, line 30
grouping igp-interface { grouping igp-interface {
description description
"Grouping for IGP interface configuration."; "Grouping for IGP interface configuration.";
container segment-routing { container segment-routing {
description description
"Container for SR interface configuration."; "Container for SR interface configuration.";
container adjacency-sid { container adjacency-sid {
description description
"Adjacency SID configuration."; "Adjacency SID configuration.";
list adj-sids {
key "value";
uses sr-cmn:sid-value-type;
leaf value {
type uint32;
description
"Value of the Adj-SID.";
}
leaf protected {
type boolean;
default false;
description
"It is used to protect the mannual adj-SID.";
}
description
"List of adj-sid configuration.";
}
list advertise-adj-group-sid { list advertise-adj-group-sid {
key "group-id"; key "group-id";
description description
"Control advertisement of S flag. Enable advertisement "Control advertisement of S flag. Enable advertisement
of a common Adj-SID for parallel links."; of a common Adj-SID for parallel links.";
leaf group-id { leaf group-id {
type uint32; type uint32;
description description
"The value is an internal value to identify a "The value is an internal value to identify a
group-ID. Interfaces with the same group-ID will be group-ID. Interfaces with the same group-ID will be
bundled together."; bundled together.";
} }
} }
leaf advertise-protection { leaf advertise-protection {
type enumeration { type enumeration {
skipping to change at page 25, line 4 skipping to change at page 25, line 20
"This notification is sent when a binding is received "This notification is sent when a binding is received
containing a segment index which is out of the local containing a segment index which is out of the local
configured ranges. The notification generation must be configured ranges. The notification generation must be
throttled with at least a 5 second gap between throttled with at least a 5 second gap between
notifications."; notifications.";
leaf received-target { leaf received-target {
type string; type string;
description description
"Target received in the router advertisement with "Target received in the router advertisement with
the out-of-range index."; the out-of-range index.";
} }
leaf received-index { leaf received-index {
type uint32; type uint32;
description description
"Value of the index received."; "Value of the index received.";
} }
leaf routing-protocol { leaf routing-protocol {
type leafref { type leafref {
path "/rt:routing/rt:control-plane-protocols/" path "/rt:routing/rt:control-plane-protocols/"
+ "rt:control-plane-protocol/rt:name"; + "rt:control-plane-protocol/rt:name";
} }
description description
"Routing protocol reference for out-of-range indexd."; "Routing protocol reference for out-of-range indexd.";
} }
} }
} }
<CODE ENDS> <CODE ENDS>
9. Security Considerations 9. Security Considerations
TBD. The YANG modules specified in this document define 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
[RFC5246].
The NETCONF access control model [RFC6536] provides the means to
restrict access for particular NETCONF or RESTCONF users to a pre-
configured subset of all available NETCONF or RESTCONF protocol
operations and content.
There are a number of data nodes defined in the modules 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.
Some of the readable data nodes in the modules 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.
10. Acknowledgements 10. Acknowledgements
Authors would like to thank Derek Yeung, Acee Lindem, Greg Hankins, Authors would like to thank Derek Yeung, Greg Hankins, Hannes
Hannes Gredler, Uma Chunduri, Jeffrey Zhang, Shradda Hedge, Les Gredler, Uma Chunduri, Jeffrey Zhang, Shradda Hedge, Les Ginsberg for
Ginsberg for their contributions. their contributions.
11. IANA Considerations 11. IANA Considerations
TBD. This document registers a URI in the IETF XML registry [RFC3688].
Following the format in [RFC3688], the following registration is
requested to be made:
URI: urn:ietf:params:xml:ns:yang:ietf-segment-routing-commmon
Registrant Contact: The IESG.
XML: N/A, the requested URI is an XML namespace.
URI: urn:ietf:params:xml:ns:yang:ietf-segment-routing
Registrant Contact: The IESG.
XML: N/A, the requested URI is an XML namespace.
This document registers a YANG module in the YANG Module Names
registry [RFC6020].
name: ietf-segment-routing-common
namespace: urn:ietf:params:xml:ns:yang:ietf-segment-routing-common
prefix: sr-cmn
reference: RFC XXXX
name: ietf-segment-routing
namespace: urn:ietf:params:xml:ns:yang:ietf-segment-routing
prefix: sr
reference: RFC XXXX
12. References 12. References
12.1. Normative References 12.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997, <https://www.rfc- DOI 10.17487/RFC2119, March 1997,
editor.org/info/rfc2119>. <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>.
[RFC5246] Dierks, T. and E. Rescorla, "The Transport Layer Security
(TLS) Protocol Version 1.2", RFC 5246,
DOI 10.17487/RFC5246, August 2008,
<https://www.rfc-editor.org/info/rfc5246>.
[RFC6020] Bjorklund, M., Ed., "YANG - A Data Modeling Language for [RFC6020] Bjorklund, M., Ed., "YANG - A Data Modeling Language for
the Network Configuration Protocol (NETCONF)", RFC 6020, the Network Configuration Protocol (NETCONF)", RFC 6020,
DOI 10.17487/RFC6020, October 2010, <https://www.rfc- DOI 10.17487/RFC6020, October 2010,
editor.org/info/rfc6020>. <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>.
[RFC6536] Bierman, A. and M. Bjorklund, "Network Configuration
Protocol (NETCONF) Access Control Model", RFC 6536,
DOI 10.17487/RFC6536, March 2012,
<https://www.rfc-editor.org/info/rfc6536>.
[RFC6991] Schoenwaelder, J., Ed., "Common YANG Data Types", [RFC6991] Schoenwaelder, J., Ed., "Common YANG Data Types",
RFC 6991, DOI 10.17487/RFC6991, July 2013, RFC 6991, DOI 10.17487/RFC6991, July 2013,
<https://www.rfc-editor.org/info/rfc6991>. <https://www.rfc-editor.org/info/rfc6991>.
[RFC7950] Bjorklund, M., Ed., "The YANG 1.1 Data Modeling Language", [RFC7950] Bjorklund, M., Ed., "The YANG 1.1 Data Modeling Language",
RFC 7950, DOI 10.17487/RFC7950, August 2016, RFC 7950, DOI 10.17487/RFC7950, August 2016,
<https://www.rfc-editor.org/info/rfc7950>. <https://www.rfc-editor.org/info/rfc7950>.
[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>.
[RFC8294] Liu, X., Qu, Y., Lindem, A., Hopps, C., and L. Berger, [RFC8294] Liu, X., Qu, Y., Lindem, A., Hopps, C., and L. Berger,
"Common YANG Data Types for the Routing Area", RFC 8294, "Common YANG Data Types for the Routing Area", RFC 8294,
DOI 10.17487/RFC8294, December 2017, <https://www.rfc- DOI 10.17487/RFC8294, December 2017,
editor.org/info/rfc8294>. <https://www.rfc-editor.org/info/rfc8294>.
[RFC8342] Bjorklund, M., Schoenwaelder, J., Shafer, P., Watsen, K., [RFC8342] Bjorklund, M., Schoenwaelder, J., Shafer, P., Watsen, K.,
and R. Wilton, "Network Management Datastore Architecture and R. Wilton, "Network Management Datastore Architecture
(NMDA)", RFC 8342, DOI 10.17487/RFC8342, March 2018, (NMDA)", RFC 8342, DOI 10.17487/RFC8342, March 2018,
<https://www.rfc-editor.org/info/rfc8342>. <https://www.rfc-editor.org/info/rfc8342>.
[RFC8343] Bjorklund, M., "A YANG Data Model for Interface [RFC8343] Bjorklund, M., "A YANG Data Model for Interface
Management", RFC 8343, DOI 10.17487/RFC8343, March 2018, Management", RFC 8343, DOI 10.17487/RFC8343, March 2018,
<https://www.rfc-editor.org/info/rfc8343>. <https://www.rfc-editor.org/info/rfc8343>.
[RFC8349] Lhotka, L., Lindem, A., and Y. Qu, "A YANG Data Model for [RFC8349] Lhotka, L., Lindem, A., and Y. Qu, "A YANG Data Model for
Routing Management (NMDA Version)", RFC 8349, Routing Management (NMDA Version)", RFC 8349,
DOI 10.17487/RFC8349, March 2018, <https://www.rfc- DOI 10.17487/RFC8349, March 2018,
editor.org/info/rfc8349>. <https://www.rfc-editor.org/info/rfc8349>.
[RFC8402] Filsfils, C., Ed., Previdi, S., Ed., Ginsberg, L., [RFC8402] Filsfils, C., Ed., Previdi, S., Ed., Ginsberg, L.,
Decraene, B., Litkowski, S., and R. Shakir, "Segment Decraene, B., Litkowski, S., and R. Shakir, "Segment
Routing Architecture", RFC 8402, DOI 10.17487/RFC8402, Routing Architecture", RFC 8402, DOI 10.17487/RFC8402,
July 2018, <https://www.rfc-editor.org/info/rfc8402>. July 2018, <https://www.rfc-editor.org/info/rfc8402>.
[RFC8476] Tantsura, J., Chunduri, U., Aldrin, S., and P. Psenak, [RFC8476] Tantsura, J., Chunduri, U., Aldrin, S., and P. Psenak,
"Signaling Maximum SID Depth (MSD) Using OSPF", RFC 8476, "Signaling Maximum SID Depth (MSD) Using OSPF", RFC 8476,
DOI 10.17487/RFC8476, December 2018, <https://www.rfc- DOI 10.17487/RFC8476, December 2018,
editor.org/info/rfc8476>. <https://www.rfc-editor.org/info/rfc8476>.
[RFC8491] Tantsura, J., Chunduri, U., Aldrin, S., and L. Ginsberg, [RFC8491] Tantsura, J., Chunduri, U., Aldrin, S., and L. Ginsberg,
"Signaling Maximum SID Depth (MSD) Using IS-IS", RFC 8491, "Signaling Maximum SID Depth (MSD) Using IS-IS", RFC 8491,
DOI 10.17487/RFC8491, November 2018, <https://www.rfc- DOI 10.17487/RFC8491, November 2018,
editor.org/info/rfc8491>. <https://www.rfc-editor.org/info/rfc8491>.
12.2. Informative References 12.2. Informative References
[RFC8340] Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams", [RFC8340] Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams",
BCP 215, RFC 8340, DOI 10.17487/RFC8340, March 2018, BCP 215, RFC 8340, DOI 10.17487/RFC8340, March 2018,
<https://www.rfc-editor.org/info/rfc8340>. <https://www.rfc-editor.org/info/rfc8340>.
Authors' Addresses Authors' Addresses
Stephane Litkowski Stephane Litkowski
skipping to change at page 27, line 11 skipping to change at page 29, line 4
[RFC8340] Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams", [RFC8340] Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams",
BCP 215, RFC 8340, DOI 10.17487/RFC8340, March 2018, BCP 215, RFC 8340, DOI 10.17487/RFC8340, March 2018,
<https://www.rfc-editor.org/info/rfc8340>. <https://www.rfc-editor.org/info/rfc8340>.
Authors' Addresses Authors' Addresses
Stephane Litkowski Stephane Litkowski
Orange Business Service Orange Business Service
Email: stephane.litkowski@orange.com Email: stephane.litkowski@orange.com
Yingzhen Qu Yingzhen Qu
Huawei Futurewei
Email: yingzhen.qu@huawei.com Email: yingzhen.qu@futurewei.com
Acee Lindem Acee Lindem
Cisco Cisco
301 Mindenhall Way 301 Mindenhall Way
Cary, NC 27513 Cary, NC 27513
US US
Email: acee@cisco.com Email: acee@cisco.com
Pushpasis Sarkar Pushpasis Sarkar
 End of changes. 29 change blocks. 
39 lines changed or deleted 128 lines changed or added

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