draft-ietf-lsr-ospf-yang-augmentation-v1-06.txt   draft-ietf-lsr-ospf-yang-augmentation-v1-07.txt 
Internet A. Lindem Internet A. Lindem
Internet-Draft Cisco Systems Internet-Draft Cisco Systems
Intended status: Standards Track Y. Qu Intended status: Standards Track Y. Qu
Expires: January 12, 2022 Futurewei Expires: 13 July 2022 Futurewei
July 11, 2021 9 January 2022
OSPF YANG Model Augmentations for Additional Features - Version 1 OSPF YANG Model Augmentations for Additional Features - Version 1
draft-ietf-lsr-ospf-yang-augmentation-v1-06 draft-ietf-lsr-ospf-yang-augmentation-v1-07
Abstract Abstract
This document defines YANG data modules augmenting the IETF OSPF YANG This document defines YANG data modules augmenting the IETF OSPF YANG
model to provide support for Traffic Engineering Extensions to OSPF model to provide support for Traffic Engineering Extensions to OSPF
Version 3 as defined in RF 5329, OSPF Two-Part Metric as defined in Version 3 as defined in RF 5329, OSPF Two-Part Metric as defined in
RFC 8042, OSPF Graceful Link Shutdown as defined in RFC 8379, OSPF RFC 8042, OSPF Graceful Link Shutdown as defined in RFC 8379, OSPF
Link-Local Signaling (LLS) Extensions for Local Interface ID Link-Local Signaling (LLS) Extensions for Local Interface ID
Advertisement as defined in RFC 8510, OSPF Application-Specific Link Advertisement as defined in RFC 8510, OSPF Application-Specific Link
Attributes as defined in RFC 8920, and OSPF Flexible Algorithm. Attributes as defined in RFC 8920, and OSPF Flexible Algorithm.
skipping to change at page 1, line 37 skipping to change at page 1, line 37
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This Internet-Draft will expire on January 12, 2022. This Internet-Draft will expire on 13 July 2022.
Copyright Notice Copyright Notice
Copyright (c) 2021 IETF Trust and the persons identified as the Copyright (c) 2022 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
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to this document. Code Components extracted from this document must extracted from this document must include Revised BSD License text as
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described in the Simplified BSD License.
Table of Contents Table of Contents
1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3 1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3
2. YANG Module for Traffic Engineering Extesions to OSPF Version 2. YANG Module for Traffic Engineering Extesions to OSPF Version
3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. YANG Module for OSPF Two-Part Metric . . . . . . . . . . . . 9 3. YANG Module for OSPF Two-Part Metric . . . . . . . . . . . . 9
4. YANG Module for OSPF Graceful Link Shutdown . . . . . . . . . 13 4. YANG Module for OSPF Graceful Link Shutdown . . . . . . . . . 13
5. YANG Module for OSPF LLS Extenstion for Local Interface ID 5. YANG Module for OSPF LLS Extenstion for Local Interface ID
Advertisement . . . . . . . . . . . . . . . . . . . . . . . . 18 Advertisement . . . . . . . . . . . . . . . . . . . . . . 18
6. YANG Module for OSPF Application-Specific Link Attributes . . 20 6. YANG Module for OSPF Application-Specific Link Attributes . . 20
7. YANG Module for OSPF Flexible Algorithm . . . . . . . . . . . 26 7. YANG Module for OSPF Flexible Algorithm . . . . . . . . . . . 26
8. Security Considerations . . . . . . . . . . . . . . . . . . . 46 8. Security Considerations . . . . . . . . . . . . . . . . . . . 46
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 47 9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 47
10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 48 10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 48
11. Normative References . . . . . . . . . . . . . . . . . . . . 48 11. Normative References . . . . . . . . . . . . . . . . . . . . 48
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 50 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 50
1. Overview 1. Overview
skipping to change at page 8, line 49 skipping to change at page 8, line 49
+ "rt:type = 'ospf:ospfv3'" { + "rt:type = 'ospf:ospfv3'" {
description description
"This augmentation is only valid for OSPFv3."; "This augmentation is only valid for OSPFv3.";
} }
description description
"OSPFv3 Intra-Area-TE-LSA."; "OSPFv3 Intra-Area-TE-LSA.";
uses ospfv3-intra-area-te; uses ospfv3-intra-area-te;
} }
} }
<CODE ENDS> <CODE ENDS>
3. YANG Module for OSPF Two-Part Metric 3. YANG Module for OSPF Two-Part Metric
This document defines a YANG module for OSPF Two-Part Metric feature This document defines a YANG module for OSPF Two-Part Metric feature
as defined in [RFC8042]. It is an augmentation of the OSPF base as defined in [RFC8042]. It is an augmentation of the OSPF base
model. model.
module: ietf-ospf-two-part-metric module: ietf-ospf-two-part-metric
augment /rt:routing/rt:control-plane-protocols augment /rt:routing/rt:control-plane-protocols
/rt:control-plane-protocol/ospf:ospf/ospf:areas/ospf:area /rt:control-plane-protocol/ospf:ospf/ospf:areas/ospf:area
skipping to change at page 26, line 8 skipping to change at page 26, line 8
description description
"This augmentation is only valid for OSPFv3 "This augmentation is only valid for OSPFv3
E-Router LSAs"; E-Router LSAs";
} }
description description
"Augment OSPFv3 Area scope router-link TLV."; "Augment OSPFv3 Area scope router-link TLV.";
uses application-specific-link-attributes-sub-tlvs; uses application-specific-link-attributes-sub-tlvs;
} }
} }
<CODE ENDS> <CODE ENDS>
7. YANG Module for OSPF Flexible Algorithm 7. YANG Module for OSPF Flexible Algorithm
This document defines a YANG module for OSPF Flexible Algorithm as This document defines a YANG module for OSPF Flexible Algorithm as
defined in [I-D.ietf-lsr-flex-algo]. It is an augmentation of the defined in [I-D.ietf-lsr-flex-algo]. It is an augmentation of the
OSPF base model. OSPF base model.
module: ietf-ospf-flex-algo module: ietf-ospf-flex-algo
augment /rt:routing/rt:control-plane-protocols augment /rt:routing/rt:control-plane-protocols
/rt:control-plane-protocol/ospf:ospf: /rt:control-plane-protocol/ospf:ospf:
skipping to change at page 31, line 50 skipping to change at page 32, line 5
/ospf:database/ospf:area-scope-lsa-type/ospf:area-scope-lsas /ospf:database/ospf:area-scope-lsa-type/ospf:area-scope-lsas
/ospf:area-scope-lsa/ospf:version/ospf:ospfv3/ospf:ospfv3 /ospf:area-scope-lsa/ospf:version/ospf:ospfv3/ospf:ospfv3
/ospf:body/ospfv3-e-lsa:e-inter-area-router /ospf:body/ospfv3-e-lsa:e-inter-area-router
/ospfv3-e-lsa:e-inter-router-tlvs /ospfv3-e-lsa:e-inter-router-tlvs
/ospfv3-e-lsa:inter-router-tlv: /ospfv3-e-lsa:inter-router-tlv:
+--ro faam-sub-tlvs +--ro faam-sub-tlvs
+--ro faam-sub-tlv* [] +--ro faam-sub-tlv* []
+--ro flex-algo? uint8 +--ro flex-algo? uint8
+--ro metric? uint32 +--ro metric? uint32
<CODE BEGINS> file "ietf-ospf-flex-algo@2021-06-18.yang" <CODE BEGINS> file "ietf-ospf-flex-algo@2021-06-18.yang"
module ietf-ospf-flex-algo { module ietf-ospf-flex-algo {
yang-version 1.1; yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-ospf-flex-algo"; namespace "urn:ietf:params:xml:ns:yang:ietf-ospf-flex-algo";
prefix ospf-flex-algo; prefix ospf-flex-algo;
import ietf-routing {
prefix rt;
reference "RFC 8349: A YANG Data Model for Routing
Management (NMDA Version)";
}
import ietf-routing-types { import ietf-routing {
prefix "rt-types"; prefix rt;
reference "RFC 8294: Common YANG Data Types for the reference "RFC 8349: A YANG Data Model for Routing
Routing Area"; Management (NMDA Version)";
} }
import ietf-te-types { import ietf-routing-types {
prefix te-types; prefix "rt-types";
reference reference "RFC 8294: Common YANG Data Types for the
"RFC8776: Common YANG Data Types for Traffic Engineering."; Routing Area";
} }
import ietf-ospf { import ietf-te-types {
prefix "ospf"; prefix te-types;
} reference
"RFC8776: Common YANG Data Types for Traffic Engineering.";
}
import ietf-ospfv3-extended-lsa { import ietf-ospf {
prefix "ospfv3-e-lsa"; prefix "ospf";
} }
import ietf-te { import ietf-ospfv3-extended-lsa {
prefix "te"; prefix "ospfv3-e-lsa";
} }
organization import ietf-te {
"IETF LSR - Link State Routing Working Group"; prefix "te";
contact }
"WG Web: <https://tools.ietf.org/wg/spring/>
WG List: <mailto:spring@ietf.org>
Author: Yingzhen Qu organization
<mailto:yingzhen.qu@futurewei.com> "IETF LSR - Link State Routing Working Group";
Author: Acee Lindem contact
<mailto:acee@cisco.com> "WG Web: <https://tools.ietf.org/wg/spring/>
Author: Stephane Litkowski WG List: <mailto:spring@ietf.org>
<mailto:slitkows.ietf@gmail.com>
";
description Author: Yingzhen Qu
"The YANG module defines the configuration and operational <mailto:yingzhen.qu@futurewei.com>
state for OSPF Flexible Algorithm as defined in RFC xxxx. Author: Acee Lindem
<mailto:acee@cisco.com>
Author: Stephane Litkowski
<mailto:slitkows.ietf@gmail.com>
";
This YANG model conforms to the Network Management description
Datastore Architecture (NMDA) as described in RFC 8342. "The YANG module defines the configuration and operational
state for OSPF Flexible Algorithm as defined in RFC xxxx.
Copyright (c) 2021 IETF Trust and the persons identified as This YANG model conforms to the Network Management
authors of the code. All rights reserved. Datastore Architecture (NMDA) as described in RFC 8342.
Redistribution and use in source and binary forms, with or Copyright (c) 2021 IETF Trust and the persons identified as
without modification, is permitted pursuant to, and subject authors of the code. All rights reserved.
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
(https://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC XXXX; Redistribution and use in source and binary forms, with or
see the RFC itself for full legal notices. 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
(https://trustee.ietf.org/license-info).
The key words 'MUST', 'MUST NOT', 'REQUIRED', 'SHALL', 'SHALL This version of this YANG module is part of RFC XXXX;
NOT', 'SHOULD', 'SHOULD NOT', 'RECOMMENDED', 'NOT RECOMMENDED', see the RFC itself for full legal notices.
'MAY', and 'OPTIONAL' in this document are to be interpreted as
described in BCP 14 (RFC 2119) (RFC 8174) when, and only when,
they appear in all capitals, as shown here.";
reference "RFC XXXX: YANG Data Model for OSPF Flexible Algorithm."; The key words 'MUST', 'MUST NOT', 'REQUIRED', 'SHALL', 'SHALL
NOT', 'SHOULD', 'SHOULD NOT', 'RECOMMENDED', 'NOT RECOMMENDED',
'MAY', and 'OPTIONAL' in this document are to be interpreted as
described in BCP 14 (RFC 2119) (RFC 8174) when, and only when,
they appear in all capitals, as shown here.";
revision 2021-06-18 { reference "RFC XXXX: YANG Data Model for OSPF Flexible Algorithm.";
description
"Initial Version";
reference "RFC XXXX: YANG Data Model for OSPF Flexible Algorithm.";
}
/* Identities */ revision 2021-06-18 {
description
"Initial Version";
reference "RFC XXXX: YANG Data Model for OSPF Flexible Algorithm.";
}
identity metric-type { /* Identities */
description
"Base identity for route metric types.";
}
identity igp-metric { identity metric-type {
base metric-type; description
description "Base identity for route metric types.";
"Identity for the IGP metric type."; }
}
identity min-uni-delay {
base metric-type;
description
"Min unidirectional link delay metric type.";
reference
"RFC 7471 - OSPF Traffic Engineering (TE) Metric Extensions";
}
identity te-metric { identity igp-metric {
base metric-type; base metric-type;
description description
"Traffic engineering metric type."; "Identity for the IGP metric type.";
reference }
"RFC 3630 - Traffic Engineering (TE) Extensions to OSPF
Version 2";
}
identity fad-flags { identity min-uni-delay {
description base metric-type;
"Base identity for OSPF FAD flags."; description
} "Min unidirectional link delay metric type.";
reference
"RFC 7471 - OSPF Traffic Engineering (TE) Metric Extensions";
}
identity m-bit { identity te-metric {
base fad-flags; base metric-type;
description description
"M bit, when set, the fex-algo specific prefix and ASBR "Traffic engineering metric type.";
metric MUST be used for inter-area and external prefix reference
calculation."; "RFC 3630 - Traffic Engineering (TE) Extensions to OSPF
} Version 2";
}
identity fapm-flags { identity fad-flags {
description description
"Base identity for OSPF flex-algo prefix metric flags."; "Base identity for OSPF FAD flags.";
} }
identity e-bit { identity m-bit {
base fapm-flags; base fad-flags;
description description
"External metric, if set, the metric specified is a "M bit, when set, the fex-algo specific prefix and ASBR
type 2 external metric."; metric MUST be used for inter-area and external prefix
} calculation.";
}
/* Groupings */ identity fapm-flags {
grouping fa-ex-ag-sub-tlv { description
container fa-ex-ag-sub-tlv { "Base identity for OSPF flex-algo prefix metric flags.";
leaf-list extended-admin-groups { }
type uint64;
description
"Extended administrative group as defined in RFC 7308.";
}
description
"The flex-algo exclude admin group sub-tlv.";
}
description
"The flex-algo exclude admin group sub-tlv.";
}
grouping fa-in-any-ag-sub-tlv { identity e-bit {
container fa-in-any-ag-sub-tlv { base fapm-flags;
leaf-list extended-admin-groups { description
type uint64; "External metric, if set, the metric specified is a
description type 2 external metric.";
"Extended administrative group as defined in RFC 7308."; }
}
description
"The flex-algo include-any admin group sub-tlv.";
}
description
"The flex-algo include-any admin group sub-tlv.";
}
grouping fa-in-all-ag-sub-tlv { /* Groupings */
container fa-in-all-ag-sub-tlv { grouping fa-ex-ag-sub-tlv {
leaf-list extended-admin-groups { container fa-ex-ag-sub-tlv {
type uint64; leaf-list extended-admin-groups {
description type uint64;
"Extended administrative group as defined in RFC 7308."; description
} "Extended administrative group as defined in RFC 7308.";
description }
"The flex-algo include-all admin group sub-tlv."; description
} "The flex-algo exclude admin group sub-tlv.";
description }
"The flex-algo include-all admin group sub-tlv."; description
} "The flex-algo exclude admin group sub-tlv.";
}
grouping fad-flags-sub-tlv { grouping fa-in-any-ag-sub-tlv {
container fad-flags-sub-tlv { container fa-in-any-ag-sub-tlv {
leaf-list fad-flags { leaf-list extended-admin-groups {
type identityref { type uint64;
base fad-flags; description
} "Extended administrative group as defined in RFC 7308.";
description }
"Flex-algo definition flags list."; description
} "The flex-algo include-any admin group sub-tlv.";
description }
"OSPF flex-algo definition flags."; description
"The flex-algo include-any admin group sub-tlv.";
}
} grouping fa-in-all-ag-sub-tlv {
description container fa-in-all-ag-sub-tlv {
"The flex-algo definition flags sub-tlv."; leaf-list extended-admin-groups {
} type uint64;
description
"Extended administrative group as defined in RFC 7308.";
}
description
"The flex-algo include-all admin group sub-tlv.";
}
description
"The flex-algo include-all admin group sub-tlv.";
}
grouping fa-ex-srlg-sub-tlv { grouping fad-flags-sub-tlv {
container fa-ex-srlg-sub-tlv { container fad-flags-sub-tlv {
leaf-list srlgs { leaf-list fad-flags {
type uint32; type identityref {
description base fad-flags;
"SRLG value as defined in RFC 4203."; }
} description
description "Flex-algo definition flags list.";
"The flex-algo exclude SRLG sub-tlv.";
}
description
"The flex-algo exclude SRLG sub-tlv.";
}
grouping fad-tlvs { }
container fad-tlvs { description
list fad-tlv { "OSPF flex-algo definition flags.";
leaf flex-algo { }
type uint8; description
description "The flex-algo definition flags sub-tlv.";
"Flex-algo number, value between 128 and 255 inclusive."; }
}
leaf metric-type {
type identityref {
base metric-type;
}
description
"Type of metric to be used during the calculation.";
}
leaf calc-type {
type uint8 {
range "0..127";
}
description
"IGP algorithm types, value from 0 to 127 as
defined under 'Interior Gateway Protocol (IGP)
Parameter' by IANA.";
}
leaf priority {
type uint8;
description
"Priority of the advertisement.";
}
uses fa-ex-ag-sub-tlv;
uses fa-in-any-ag-sub-tlv;
uses fa-in-all-ag-sub-tlv;
uses fad-flags-sub-tlv;
uses fa-ex-srlg-sub-tlv;
uses ospf:unknown-tlvs;
description grouping fa-ex-srlg-sub-tlv {
"List of flex-algo definition TLVs."; container fa-ex-srlg-sub-tlv {
} leaf-list srlgs {
description type uint32;
"OSPF Flexible Algorithm Definition TLV."; description
} "SRLG value as defined in RFC 4203.";
description }
"OSPF Flexible Algorithm Definition (FAD) TLV."; description
} "The flex-algo exclude SRLG sub-tlv.";
}
description
"The flex-algo exclude SRLG sub-tlv.";
}
grouping fapm-sub-tlvs { grouping fad-tlvs {
container fapm-sub-tlvs { container fad-tlvs {
list fapm-sub-tlv { list fad-tlv {
leaf flex-algo { leaf flex-algo {
type uint8; type uint8;
description description
"Flex-algo number, value between 128 and 255 "Flex-algo number, value between 128 and 255 inclusive.";
inclusive."; }
} leaf metric-type {
leaf-list fapm-flags { type identityref {
type identityref { base metric-type;
base fapm-flags; }
} description
description "Type of metric to be used during the calculation.";
"Flex-algo prefix metric flags list."; }
} leaf calc-type {
leaf metric { type uint8 {
type uint32; range "0..127";
description }
"Prefix metric."; description
} "IGP algorithm types, value from 0 to 127 as
description defined under 'Interior Gateway Protocol (IGP)
"List of flex-algo prefix sub-tlvs."; Parameter' by IANA.";
} }
description leaf priority {
"Flex-algo prefix metric sub-tlvs."; type uint8;
} description
description "Priority of the advertisement.";
"Flexible Algorithm Prefix Metric (FAPM) sub TLVs."; }
}
grouping faam-sub-tlvs {
container faam-sub-tlvs {
list faam-sub-tlv {
leaf flex-algo {
type uint8;
description
"Flex-algo number, value between 128 and 255
inclusive.";
}
leaf metric {
type uint32;
description
"Prefix metric.";
}
description
"List of faam sub-tlvs.";
}
description
"Flexible Algorithm ASBR Metric (FAAM) Sub-TLVs.";
}
description
"Flexible Algorithm ASBR Metric (FAAM) Sub-TLVs.";
}
/* Configurations */ uses fa-ex-ag-sub-tlv;
uses fa-in-any-ag-sub-tlv;
uses fa-in-all-ag-sub-tlv;
uses fad-flags-sub-tlv;
uses fa-ex-srlg-sub-tlv;
uses ospf:unknown-tlvs;
augment "/rt:routing/rt:control-plane-protocols" description
+ "/rt:control-plane-protocol/ospf:ospf" { "List of flex-algo definition TLVs.";
when "../rt:type = 'ospf:ospfv2' or " }
+ "../rt:type = 'ospf:ospfv3'" { description
description "OSPF Flexible Algorithm Definition TLV.";
"This augments the OSPF routing protocol when used."; }
} description
description "OSPF Flexible Algorithm Definition (FAD) TLV.";
"This augments OSPF protocol with Flexible }
Algorithm.";
container ospf-flex-algo { grouping fapm-sub-tlvs {
list flex-algo { container fapm-sub-tlvs {
key "algo-number"; list fapm-sub-tlv {
leaf flex-algo {
type uint8;
description
"Flex-algo number, value between 128 and 255
inclusive.";
}
leaf-list fapm-flags {
type identityref {
base fapm-flags;
}
description
"Flex-algo prefix metric flags list.";
}
leaf metric {
type uint32;
description
"Prefix metric.";
}
description
"List of flex-algo prefix sub-tlvs.";
}
description
"Flex-algo prefix metric sub-tlvs.";
}
description
"Flexible Algorithm Prefix Metric (FAPM) sub TLVs.";
}
leaf algo-number { grouping faam-sub-tlvs {
type uint8 { container faam-sub-tlvs {
range "128..255"; list faam-sub-tlv {
} leaf flex-algo {
description type uint8;
"An identifier in the range 128-255 that's associated description
with the Flexible Algorithm Definition."; "Flex-algo number, value between 128 and 255
} inclusive.";
}
leaf metric {
type uint32;
description
"Prefix metric.";
}
description
"List of faam sub-tlvs.";
}
description
"Flexible Algorithm ASBR Metric (FAAM) Sub-TLVs.";
}
description
"Flexible Algorithm ASBR Metric (FAAM) Sub-TLVs.";
}
leaf advertise-definition { /* Configurations */
type boolean;
default true;
description
"Enable to advertise the flex-algo definition.";
}
container admin-groups { augment "/rt:routing/rt:control-plane-protocols"
if-feature "te-types:extended-admin-groups"; + "/rt:control-plane-protocol/ospf:ospf" {
if-feature "te-types:named-extended-admin-groups"; when "../rt:type = 'ospf:ospfv2' or "
leaf-list exclude-admin-groups { + "../rt:type = 'ospf:ospfv3'" {
type leafref { description
path "/te:te/te:globals/te:named-admin-groups/" "This augments the OSPF routing protocol when used.";
+ "te:named-admin-group/te:name"; }
} description
description "This augments OSPF protocol with Flexible
"Exclude rule used during the flex-algo Algorithm.";
path computation.";
}
leaf-list include-any-admin-groups {
type leafref {
path "/te:te/te:globals/te:named-admin-groups/"
+ "te:named-admin-group/te:name";
}
description
"Include-any rule used during the flex-algo
path computation.";
}
leaf-list include-all-admin-groups {
type leafref {
path "/te:te/te:globals/te:named-admin-groups/"
+ "te:named-admin-group/te:name";
}
description
"Include-all rule used during the flex-algo
path computation.";
}
description
"Specify links for the flex-algo path computation.";
}
leaf-list exclude-srlgs { container ospf-flex-algo {
if-feature "te-types:named-srlg-groups"; list flex-algo {
type leafref { key "algo-number";
path "/te:te/te:globals/te:named-srlgs/te:named-srlg/"
+ "te:name";
}
description
"Shared Risk Link Groups (SRLGs) to be excluded during
the flex-algo path computation.";
}
leaf fast-reroute { leaf algo-number {
type boolean; type uint8 {
default true; range "128..255";
description }
"Enable fast reroute."; description
} "An identifier in the range 128-255 that's associated
with the Flexible Algorithm Definition.";
}
leaf metric-type { leaf advertise-definition {
type identityref { type boolean;
base metric-type; default true;
} description
description "Enable to advertise the flex-algo definition.";
"Type of metric to be used during the calculation."; }
}
leaf microloop-avoidance { container admin-groups {
type boolean; if-feature "te-types:extended-admin-groups";
default true; if-feature "te-types:named-extended-admin-groups";
description leaf-list exclude-admin-groups {
"Enable microloop avoidance."; type leafref {
} path "/te:te/te:globals/te:named-admin-groups/"
+ "te:named-admin-group/te:name";
}
description
"Exclude rule used during the flex-algo
path computation.";
}
leaf-list include-any-admin-groups {
type leafref {
path "/te:te/te:globals/te:named-admin-groups/"
+ "te:named-admin-group/te:name";
}
description
"Include-any rule used during the flex-algo
path computation.";
}
leaf-list include-all-admin-groups {
type leafref {
path "/te:te/te:globals/te:named-admin-groups/"
+ "te:named-admin-group/te:name";
}
description
"Include-all rule used during the flex-algo
path computation.";
}
description
"Specify links for the flex-algo path computation.";
}
leaf-list exclude-srlgs {
if-feature "te-types:named-srlg-groups";
type leafref {
path "/te:te/te:globals/te:named-srlgs/te:named-srlg/"
+ "te:name";
}
description
"Shared Risk Link Groups (SRLGs) to be excluded during
the flex-algo path computation.";
}
container prefix-metric { leaf fast-reroute {
presence type boolean;
"Use flex-algo specific prefix metric."; default true;
description description
"Use flex-algo prefix metric."; "Enable fast reroute.";
} }
leaf priority { leaf metric-type {
type uint8; type identityref {
description base metric-type;
"Priority of the advertisement."; }
} description
"Type of metric to be used during the calculation.";
}
description leaf microloop-avoidance {
"List of flex-algo configurations."; type boolean;
} default true;
description description
"Flexible Algorithm configuration."; "Enable microloop avoidance.";
} }
} container prefix-metric {
presence
"Use flex-algo specific prefix metric.";
description
"Use flex-algo prefix metric.";
}
/* Database */ leaf priority {
type uint8;
description
"Priority of the advertisement.";
}
augment "/rt:routing/" description
+ "rt:control-plane-protocols/rt:control-plane-protocol/" "List of flex-algo configurations.";
+ "ospf:ospf/ospf:areas/ospf:area/"
+ "ospf:interfaces/ospf:interface/ospf:database/"
+ "ospf:link-scope-lsa-type/ospf:link-scope-lsas/"
+ "ospf:link-scope-lsa/ospf:version/ospf:ospfv2/"
+ "ospf:ospfv2/ospf:body/ospf:opaque/ospf:ri-opaque" {
when "../../../../../../../../../../../../../"
+ "rt:type = 'ospf:ospfv2'" {
description
"This augmentation is only valid for OSPFv2.";
}
description }
"Flex-algo definition TLVs for OSPFv2 type 9 opaque RI LSA."; description
"Flexible Algorithm configuration.";
}
}
uses fad-tlvs; /* Database */
}
augment "/rt:routing/" augment "/rt:routing/"
+ "rt:control-plane-protocols/rt:control-plane-protocol/" + "rt:control-plane-protocols/rt:control-plane-protocol/"
+ "ospf:ospf/ospf:areas/" + "ospf:ospf/ospf:areas/ospf:area/"
+ "ospf:area/ospf:database/" + "ospf:interfaces/ospf:interface/ospf:database/"
+ "ospf:area-scope-lsa-type/ospf:area-scope-lsas/" + "ospf:link-scope-lsa-type/ospf:link-scope-lsas/"
+ "ospf:area-scope-lsa/ospf:version/ospf:ospfv2/" + "ospf:link-scope-lsa/ospf:version/ospf:ospfv2/"
+ "ospf:ospfv2/ospf:body/ospf:opaque/ospf:ri-opaque" { + "ospf:ospfv2/ospf:body/ospf:opaque/ospf:ri-opaque" {
when "../../../../../../../../../../../" when "../../../../../../../../../../../../../"
+ "rt:type = 'ospf:ospfv2'" { + "rt:type = 'ospf:ospfv2'" {
description description
"This augmentation is only valid for OSPFv2."; "This augmentation is only valid for OSPFv2.";
} }
description description
"Flex-algo definition TLVs for OSPFv2 type 10 opaque RI LSA."; "Flex-algo definition TLVs for OSPFv2 type 9 opaque RI LSA.";
uses fad-tlvs; uses fad-tlvs;
} }
augment "/rt:routing/" augment "/rt:routing/"
+ "rt:control-plane-protocols/rt:control-plane-protocol/" + "rt:control-plane-protocols/rt:control-plane-protocol/"
+ "ospf:ospf/ospf:database/" + "ospf:ospf/ospf:areas/"
+ "ospf:as-scope-lsa-type/ospf:as-scope-lsas/" + "ospf:area/ospf:database/"
+ "ospf:as-scope-lsa/ospf:version/ospf:ospfv2/" + "ospf:area-scope-lsa-type/ospf:area-scope-lsas/"
+ "ospf:ospfv2/ospf:body/ospf:opaque/ospf:ri-opaque" { + "ospf:area-scope-lsa/ospf:version/ospf:ospfv2/"
+ "ospf:ospfv2/ospf:body/ospf:opaque/ospf:ri-opaque" {
when "../../../../../../../../../../../"
+ "rt:type = 'ospf:ospfv2'" {
description
"This augmentation is only valid for OSPFv2.";
}
when "../../../../../../../../../" description
+ "rt:type = 'ospf:ospfv2'" { "Flex-algo definition TLVs for OSPFv2 type 10 opaque RI LSA.";
description
"This augmentation is only valid for OSPFv2.";
}
description
"Flex-algo definition TLVs for OSPFv2 type 11 opaque RI LSA.";
uses fad-tlvs; uses fad-tlvs;
} }
augment "/rt:routing/" augment "/rt:routing/"
+ "rt:control-plane-protocols/rt:control-plane-protocol/" + "rt:control-plane-protocols/rt:control-plane-protocol/"
+ "ospf:ospf/ospf:areas/ospf:area/" + "ospf:ospf/ospf:database/"
+ "ospf:interfaces/ospf:interface/ospf:database/" + "ospf:as-scope-lsa-type/ospf:as-scope-lsas/"
+ "ospf:link-scope-lsa-type/ospf:link-scope-lsas/" + "ospf:as-scope-lsa/ospf:version/ospf:ospfv2/"
+ "ospf:link-scope-lsa/ospf:version/ospf:ospfv3/" + "ospf:ospfv2/ospf:body/ospf:opaque/ospf:ri-opaque" {
+ "ospf:ospfv3/ospf:body/ospf:router-information" { when "../../../../../../../../../"
when "../../../../../../../../../../../../" + "rt:type = 'ospf:ospfv2'" {
+ "rt:type = 'ospf:ospfv3'" { description
description "This augmentation is only valid for OSPFv2.";
"This augmentation is only valid for OSPFv3."; }
} description
"Flex-algo definition TLVs for OSPFv2 type 11 opaque RI LSA.";
description uses fad-tlvs;
"Flex-algo definition TLVs for OSPFv3 Router Information LSA."; }
uses fad-tlvs; augment "/rt:routing/"
} + "rt:control-plane-protocols/rt:control-plane-protocol/"
+ "ospf:ospf/ospf:areas/ospf:area/"
+ "ospf:interfaces/ospf:interface/ospf:database/"
+ "ospf:link-scope-lsa-type/ospf:link-scope-lsas/"
+ "ospf:link-scope-lsa/ospf:version/ospf:ospfv3/"
+ "ospf:ospfv3/ospf:body/ospf:router-information" {
when "../../../../../../../../../../../../"
+ "rt:type = 'ospf:ospfv3'" {
description
"This augmentation is only valid for OSPFv3.";
}
augment "/rt:routing/" description
+ "rt:control-plane-protocols/rt:control-plane-protocol/" "Flex-algo definition TLVs for OSPFv3 Router Information LSA.";
+ "ospf:ospf/ospf:areas/"
+ "ospf:area/ospf:database/"
+ "ospf:area-scope-lsa-type/ospf:area-scope-lsas/"
+ "ospf:area-scope-lsa/ospf:version/ospf:ospfv3/"
+ "ospf:ospfv3/ospf:body/ospf:router-information" {
when "../../../../../../../../../../"
+ "rt:type = 'ospf:ospfv3'" {
description
"This augmentation is only valid for OSPFv3.";
}
description uses fad-tlvs;
"Flex-algo definition TLVs for OSPFv3 Router Information LSA."; }
uses fad-tlvs; augment "/rt:routing/"
} + "rt:control-plane-protocols/rt:control-plane-protocol/"
augment "/rt:routing/" + "ospf:ospf/ospf:areas/"
+ "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:area/ospf:database/"
+ "ospf:ospf/ospf:database/" + "ospf:area-scope-lsa-type/ospf:area-scope-lsas/"
+ "ospf:as-scope-lsa-type/ospf:as-scope-lsas/" + "ospf:area-scope-lsa/ospf:version/ospf:ospfv3/"
+ "ospf:as-scope-lsa/ospf:version/ospf:ospfv3/" + "ospf:ospfv3/ospf:body/ospf:router-information" {
+ "ospf:ospfv3/ospf:body/ospf:router-information" { when "../../../../../../../../../../"
when "../../../../../../../../" + "rt:type = 'ospf:ospfv3'" {
+ "rt:type = 'ospf:ospfv3'" { description
description "This augmentation is only valid for OSPFv3.";
"This augmentation is only valid for OSPFv3."; }
}
description
"Flex-algo definition TLVs for OSPFv3 Router Information LSA.";
uses fad-tlvs; description
} "Flex-algo definition TLVs for OSPFv3 Router Information LSA.";
augment "/rt:routing/" uses fad-tlvs;
+ "rt:control-plane-protocols/rt:control-plane-protocol/" }
+ "ospf:ospf/ospf:areas/ospf:area/"
+ "ospf:interfaces/ospf:interface/ospf:database/"
+ "ospf:link-scope-lsa-type/ospf:link-scope-lsas/"
+ "ospf:link-scope-lsa/ospf:version/ospf:ospfv2/"
+ "ospf:ospfv2/ospf:body/ospf:opaque/"
+ "ospf:extended-prefix-opaque/ospf:extended-prefix-tlv" {
when "../../../../../../../../../../../../../../"
+ "rt:type = 'ospf:ospfv2'" {
description
"This augmentation is only valid for OSPFv2.";
}
description
"Flex-algo prefix metric sub TLVs for OSPFv2 extended prefix TLV
in type 9 opaque LSA.";
uses fapm-sub-tlvs;
}
augment "/rt:routing/" augment "/rt:routing/"
+ "rt:control-plane-protocols/rt:control-plane-protocol/" + "rt:control-plane-protocols/rt:control-plane-protocol/"
+ "ospf:ospf/ospf:areas/" + "ospf:ospf/ospf:database/"
+ "ospf:area/ospf:database/" + "ospf:as-scope-lsa-type/ospf:as-scope-lsas/"
+ "ospf:area-scope-lsa-type/ospf:area-scope-lsas/" + "ospf:as-scope-lsa/ospf:version/ospf:ospfv3/"
+ "ospf:area-scope-lsa/ospf:version/ospf:ospfv2/" + "ospf:ospfv3/ospf:body/ospf:router-information" {
+ "ospf:ospfv2/ospf:body/ospf:opaque/" when "../../../../../../../../"
+ "ospf:extended-prefix-opaque/ospf:extended-prefix-tlv" { + "rt:type = 'ospf:ospfv3'" {
when "../../../../../../../../../../../../" description
+ "rt:type = 'ospf:ospfv2'" { "This augmentation is only valid for OSPFv3.";
description }
"This augmentation is only valid for OSPFv2."; description
"Flex-algo definition TLVs for OSPFv3 Router Information LSA.";
} uses fad-tlvs;
description }
"Flex-algo prefix metric sub TLVs for OSPFv2 extended prefix TLV
in type 10 opaque LSA.";
uses fapm-sub-tlvs;
}
augment "/rt:routing/" augment "/rt:routing/"
+ "rt:control-plane-protocols/rt:control-plane-protocol/" + "rt:control-plane-protocols/rt:control-plane-protocol/"
+ "ospf:ospf/ospf:database/" + "ospf:ospf/ospf:areas/ospf:area/"
+ "ospf:as-scope-lsa-type/ospf:as-scope-lsas/" + "ospf:interfaces/ospf:interface/ospf:database/"
+ "ospf:as-scope-lsa/ospf:version/ospf:ospfv2/" + "ospf:link-scope-lsa-type/ospf:link-scope-lsas/"
+ "ospf:ospfv2/ospf:body/ospf:opaque/" + "ospf:link-scope-lsa/ospf:version/ospf:ospfv2/"
+ "ospf:extended-prefix-opaque/ospf:extended-prefix-tlv" { + "ospf:ospfv2/ospf:body/ospf:opaque/"
when "../../../../../../../../../../" + "ospf:extended-prefix-opaque/ospf:extended-prefix-tlv" {
+ "rt:type = 'ospf:ospfv2'" { when "../../../../../../../../../../../../../../"
description + "rt:type = 'ospf:ospfv2'" {
"This augmentation is only valid for OSPFv2."; description
} "This augmentation is only valid for OSPFv2.";
description }
"Flex-algo prefix metric sub TLVs for OSPFv2 extended prefix TLV description
in type 11 opaque LSA."; "Flex-algo prefix metric sub TLVs for OSPFv2 extended prefix TLV
uses fapm-sub-tlvs; in type 9 opaque LSA.";
} uses fapm-sub-tlvs;
}
/* Flex-algo prefix metric Sub-TLV in OSPFv3 Inter-Area Prefix TLV */ augment "/rt:routing/"
augment "/rt:routing/" + "rt:control-plane-protocols/rt:control-plane-protocol/"
+ "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:areas/"
+ "ospf:ospf/ospf:areas/ospf:area/ospf:database/" + "ospf:area/ospf:database/"
+ "ospf:area-scope-lsa-type/ospf:area-scope-lsas/" + "ospf:area-scope-lsa-type/ospf:area-scope-lsas/"
+ "ospf:area-scope-lsa/ospf:version/ospf:ospfv3/" + "ospf:area-scope-lsa/ospf:version/ospf:ospfv2/"
+ "ospf:ospfv3/ospf:body/ospfv3-e-lsa:e-inter-area-prefix/" + "ospf:ospfv2/ospf:body/ospf:opaque/"
+ "ospfv3-e-lsa:e-inter-prefix-tlvs/ospfv3-e-lsa:inter-prefix-tlv" { + "ospf:extended-prefix-opaque/ospf:extended-prefix-tlv" {
when "../../../../../../../../../../../../" when "../../../../../../../../../../../../"
+ "rt:type = 'ospf:ospfv3'" { + "rt:type = 'ospf:ospfv2'" {
description description
"This augmentation is only valid for OSPFv3 "This augmentation is only valid for OSPFv2.";
E-Router LSAs"; }
} description
uses fapm-sub-tlvs; "Flex-algo prefix metric sub TLVs for OSPFv2 extended prefix TLV
description in type 10 opaque LSA.";
"OSPFv3 Area-Scoped Inter-Area Prefix TLV."; uses fapm-sub-tlvs;
} }
/* Flex-algo prefix metric Sub-TLV in OSPFv3 External Prefix TLV */ augment "/rt:routing/"
augment "/rt:routing/" + "rt:control-plane-protocols/rt:control-plane-protocol/"
+ "rt:control-plane-protocols/rt:control-plane-protocol/" + "ospf:ospf/ospf:database/"
+ "ospf:ospf/ospf:database/" + "ospf:as-scope-lsa-type/ospf:as-scope-lsas/"
+ "ospf:as-scope-lsa-type/ospf:as-scope-lsas/" + "ospf:as-scope-lsa/ospf:version/ospf:ospfv2/"
+ "ospf:as-scope-lsa/ospf:version/ospf:ospfv3/" + "ospf:ospfv2/ospf:body/ospf:opaque/"
+ "ospf:ospfv3/ospf:body/ospfv3-e-lsa:e-as-external/" + "ospf:extended-prefix-opaque/ospf:extended-prefix-tlv" {
+ "ospfv3-e-lsa:e-external-tlvs/ospfv3-e-lsa:external-prefix-tlv" { when "../../../../../../../../../../"
when "'ospf:../../../../../../../../../" + "rt:type = 'ospf:ospfv2'" {
+ "rt:type' = 'ospf:ospfv3'" { description
description "This augmentation is only valid for OSPFv2.";
"This augmentation is only valid for OSPFv3."; }
} description
uses fapm-sub-tlvs; "Flex-algo prefix metric sub TLVs for OSPFv2 extended prefix TLV
description in type 11 opaque LSA.";
"OSPFv3 AS-Scoped External Prefix TLV."; uses fapm-sub-tlvs;
} }
/* OSPFv2 Extended Inter-Area ASBR LSA */ /* Flex-algo prefix metric Sub-TLV in OSPFv3 Inter-Area Prefix TLV */
augment "/rt:routing/" augment "/rt:routing/"
+ "rt:control-plane-protocols/rt:control-plane-protocol/" + "rt:control-plane-protocols/rt:control-plane-protocol/"
+ "ospf:ospf/ospf:areas/" + "ospf:ospf/ospf:areas/ospf:area/ospf:database/"
+ "ospf:area/ospf:database/" + "ospf:area-scope-lsa-type/ospf:area-scope-lsas/"
+ "ospf:area-scope-lsa-type/ospf:area-scope-lsas/" + "ospf:area-scope-lsa/ospf:version/ospf:ospfv3/"
+ "ospf:area-scope-lsa/ospf:version/ospf:ospfv2/" + "ospf:ospfv3/ospf:body/ospfv3-e-lsa:e-inter-area-prefix/"
+ "ospf:ospfv2/ospf:body/ospf:opaque" { + "ospfv3-e-lsa:e-inter-prefix-tlvs/ospfv3-e-lsa:inter-prefix-tlv" {
when "../../../../../../../../../../" when "../../../../../../../../../../../../"
+ "rt:type = 'ospf:ospfv2'" { + "rt:type = 'ospf:ospfv3'" {
description description
"This augmentation is only valid for OSPFv2."; "This augmentation is only valid for OSPFv3
} E-Router LSAs";
description }
"OSPFv2 Extended Inter-Area ASBR LSA in type 10 uses fapm-sub-tlvs;
opaque LSA."; description
"OSPFv3 Area-Scoped Inter-Area Prefix TLV.";
}
/* Flex-algo prefix metric Sub-TLV in OSPFv3 External Prefix TLV */
augment "/rt:routing/"
+ "rt:control-plane-protocols/rt:control-plane-protocol/"
+ "ospf:ospf/ospf:database/"
+ "ospf:as-scope-lsa-type/ospf:as-scope-lsas/"
+ "ospf:as-scope-lsa/ospf:version/ospf:ospfv3/"
+ "ospf:ospfv3/ospf:body/ospfv3-e-lsa:e-as-external/"
+ "ospfv3-e-lsa:e-external-tlvs/ospfv3-e-lsa:external-prefix-tlv" {
when "'ospf:../../../../../../../../../"
+ "rt:type' = 'ospf:ospfv3'" {
description
"This augmentation is only valid for OSPFv3.";
}
uses fapm-sub-tlvs;
description
"OSPFv3 AS-Scoped External Prefix TLV.";
}
container eia-asbr-opaque { /* OSPFv2 Extended Inter-Area ASBR LSA */
container eia-asbr-tlv { augment "/rt:routing/"
leaf asbr-rtr-id { + "rt:control-plane-protocols/rt:control-plane-protocol/"
type rt-types:router-id; + "ospf:ospf/ospf:areas/"
description + "ospf:area/ospf:database/"
"The OSPF Router ID of the ASBR."; + "ospf:area-scope-lsa-type/ospf:area-scope-lsas/"
} + "ospf:area-scope-lsa/ospf:version/ospf:ospfv2/"
uses faam-sub-tlvs; + "ospf:ospfv2/ospf:body/ospf:opaque" {
uses ospf:unknown-tlvs; when "../../../../../../../../../../"
description + "rt:type = 'ospf:ospfv2'" {
"EIA-ASBR TLV, used to advertise additional attributes description
associated with the reachability of an ASBR."; "This augmentation is only valid for OSPFv2.";
} }
uses ospf:unknown-tlvs; description
"OSPFv2 Extended Inter-Area ASBR LSA in type 10
opaque LSA.";
description container eia-asbr-opaque {
"OSPFv2 Extended Inter-Area (EIA-ASBR) opaque LSA."; container eia-asbr-tlv {
leaf asbr-rtr-id {
type rt-types:router-id;
description
"The OSPF Router ID of the ASBR.";
}
uses faam-sub-tlvs;
uses ospf:unknown-tlvs;
description
"EIA-ASBR TLV, used to advertise additional attributes
associated with the reachability of an ASBR.";
}
uses ospf:unknown-tlvs;
} description
} "OSPFv2 Extended Inter-Area (EIA-ASBR) opaque LSA.";
}
}
/* FAAM Sub-TLV in OSPFv3 Inter-Area-Router TLV */ /* FAAM Sub-TLV in OSPFv3 Inter-Area-Router TLV */
augment "/rt:routing/" augment "/rt:routing/"
+ "rt:control-plane-protocols/rt:control-plane-protocol/" + "rt:control-plane-protocols/rt:control-plane-protocol/"
+ "ospf:ospf/ospf:areas/ospf:area/ospf:database/" + "ospf:ospf/ospf:areas/ospf:area/ospf:database/"
+ "ospf:area-scope-lsa-type/ospf:area-scope-lsas/" + "ospf:area-scope-lsa-type/ospf:area-scope-lsas/"
+ "ospf:area-scope-lsa/ospf:version/ospf:ospfv3/" + "ospf:area-scope-lsa/ospf:version/ospf:ospfv3/"
+ "ospf:ospfv3/ospf:body/ospfv3-e-lsa:e-inter-area-router/" + "ospf:ospfv3/ospf:body/ospfv3-e-lsa:e-inter-area-router/"
+ "ospfv3-e-lsa:e-inter-router-tlvs/" + "ospfv3-e-lsa:e-inter-router-tlvs/"
+ "ospfv3-e-lsa:inter-router-tlv" { + "ospfv3-e-lsa:inter-router-tlv" {
when "../../../../../../../../../../../../" when "../../../../../../../../../../../../"
+ "rt:type = 'ospf:ospfv3'" { + "rt:type = 'ospf:ospfv3'" {
description description
"This augmentation is only valid for OSPFv3 "This augmentation is only valid for OSPFv3
Inter-Area-Router TLV."; Inter-Area-Router TLV.";
} }
uses faam-sub-tlvs; uses faam-sub-tlvs;
description description
"OSPFv3 Area-Scoped Inter-Area-Router TLV."; "OSPFv3 Area-Scoped Inter-Area-Router TLV.";
} }
} }
<CODE ENDS> <CODE ENDS>
8. Security Considerations 8. Security Considerations
The YANG modules specified in this document define a schema for data The YANG modules specified in this document define a schema for data
that is designed to be accessed via network management protocols such that is designed to be accessed via network management protocols such
as NETCONF [RFC6241] or RESTCONF [RFC8040]. The lowest NETCONF layer as NETCONF [RFC6241] or RESTCONF [RFC8040]. The lowest NETCONF layer
is the secure transport layer, and the mandatory-to-implement secure is the secure transport layer, and the mandatory-to-implement secure
transport is Secure Shell (SSH) [RFC6242]. The lowest RESTCONF layer transport is Secure Shell (SSH) [RFC6242]. The lowest RESTCONF layer
is HTTPS, and the mandatory-to-implement secure transport is TLS is HTTPS, and the mandatory-to-implement secure transport is TLS
[RFC5246]. [RFC5246].
skipping to change at page 48, line 40 skipping to change at page 48, line 46
This document was produced using Marshall Rose's xml2rfc tool. This document was produced using Marshall Rose's xml2rfc tool.
The YANG model was developed using the suite of YANG tools written The YANG model was developed using the suite of YANG tools written
and maintained by numerous authors. and maintained by numerous authors.
11. Normative References 11. Normative References
[I-D.ietf-lsr-flex-algo] [I-D.ietf-lsr-flex-algo]
Psenak, P., Hegde, S., Filsfils, C., Talaulikar, K., and Psenak, P., Hegde, S., Filsfils, C., Talaulikar, K., and
A. Gulko, "IGP Flexible Algorithm", draft-ietf-lsr-flex- A. Gulko, "IGP Flexible Algorithm", Work in Progress,
algo-15 (work in progress), April 2021. Internet-Draft, draft-ietf-lsr-flex-algo-18, 25 October
2021, <https://www.ietf.org/archive/id/draft-ietf-lsr-
flex-algo-18.txt>.
[I-D.ietf-ospf-yang] [I-D.ietf-ospf-yang]
Yeung, D., Qu, Y., Zhang, J., Chen, I., and A. Lindem, Yeung, D., Qu, Y., Zhang, J., Chen, I., and A. Lindem,
"YANG Data Model for OSPF Protocol", draft-ietf-ospf- "YANG Data Model for OSPF Protocol", Work in Progress,
yang-29 (work in progress), October 2019. Internet-Draft, draft-ietf-ospf-yang-29, 17 October 2019,
<https://www.ietf.org/archive/id/draft-ietf-ospf-yang-
29.txt>.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997, DOI 10.17487/RFC2119, March 1997,
<https://www.rfc-editor.org/info/rfc2119>. <https://www.rfc-editor.org/info/rfc2119>.
[RFC3688] Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688, [RFC3688] Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688,
DOI 10.17487/RFC3688, January 2004, DOI 10.17487/RFC3688, January 2004,
<https://www.rfc-editor.org/info/rfc3688>. <https://www.rfc-editor.org/info/rfc3688>.
skipping to change at page 50, line 33 skipping to change at page 50, line 41
Attributes", RFC 8920, DOI 10.17487/RFC8920, October 2020, Attributes", RFC 8920, DOI 10.17487/RFC8920, October 2020,
<https://www.rfc-editor.org/info/rfc8920>. <https://www.rfc-editor.org/info/rfc8920>.
Authors' Addresses Authors' Addresses
Acee Lindem Acee Lindem
Cisco Systems Cisco Systems
301 Midenhall Way 301 Midenhall Way
Cary, NC 27513 Cary, NC 27513
EMail: acee@cisco.com Email: acee@cisco.com
Yingzhen Qu Yingzhen Qu
Futurewei Futurewei
2330 Central Expressway 2330 Central Expressway
Santa Clara, CA 95050 Santa Clara, CA 95050
USA United States of America
EMail: yingzhen.qu@futurewei.com Email: yingzhen.qu@futurewei.com
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