OSPF Link Traffic Engineering Attribute Reuse
draft-ietf-ospf-te-link-attr-reuse-09

Document Type Active Internet-Draft (lsr WG)
Last updated 2019-09-19
Replaces draft-ppsenak-ospf-te-link-attr-reuse
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication
Document shepherd Yingzhen Qu
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Responsible AD Alvaro Retana
Send notices to Acee Lindem <acee@cisco.com>, Yingzhen Qu <yingzhen.qu@futurewei.com>
LSR Working Group                                         P. Psenak, Ed.
Internet-Draft                                               L. Ginsberg
Intended status: Standards Track                           Cisco Systems
Expires: March 22, 2020                                    W. Henderickx
                                                                   Nokia
                                                             J. Tantsura
                                                                  Apstra
                                                                J. Drake
                                                        Juniper Networks
                                                      September 19, 2019

             OSPF Link Traffic Engineering Attribute Reuse
               draft-ietf-ospf-te-link-attr-reuse-09.txt

Abstract

   Various link attributes have been defined in OSPF in the context of
   the MPLS Traffic Engineering (TE) and GMPLS.  Many of these link
   attributes can be used for applications other than MPLS TE or GMPLS.
   This document defines how to distribute such attributes in OSPFv2 and
   OSPFv3 for applications other than MPLS TE or GMPLS.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on March 22, 2020.

Copyright Notice

   Copyright (c) 2019 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

Psenak, et al.           Expires March 22, 2020                 [Page 1]
Internet-Draft        OSPF Link TE Attributes Reuse       September 2019

   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements notation . . . . . . . . . . . . . . . . . .   3
   2.  Advertisement of Link Attributes  . . . . . . . . . . . . . .   3
     2.1.  OSPFv2 Extended Link Opaque LSA and OSPFv3 E-Router-LSA .   3
   3.  Advertisement of Application Specific Values  . . . . . . . .   4
   4.  Reused TE link attributes . . . . . . . . . . . . . . . . . .   7
     4.1.  Shared Risk Link Group (SRLG) . . . . . . . . . . . . . .   7
     4.2.  Extended Metrics  . . . . . . . . . . . . . . . . . . . .   8
     4.3.  Administrative Group  . . . . . . . . . . . . . . . . . .   9
     4.4.  TE Metric . . . . . . . . . . . . . . . . . . . . . . . .   9
   5.  Maximum Link Bandwidth  . . . . . . . . . . . . . . . . . . .   9
   6.  Local Interface IPv6 Address Sub-TLV  . . . . . . . . . . . .  10
   7.  Remote Interface IPv6 Address Sub-TLV . . . . . . . . . . . .  10
   8.  Deployment Considerations . . . . . . . . . . . . . . . . . .  10
   9.  Attribute Advertisements and Enablement . . . . . . . . . . .  10
   10. Backward Compatibility  . . . . . . . . . . . . . . . . . . .  11
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  12
   12. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
     12.1.  OSPFv2 . . . . . . . . . . . . . . . . . . . . . . . . .  12
     12.2.  OSPFv3 . . . . . . . . . . . . . . . . . . . . . . . . .  13
   13. Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  14
   14. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  14
   15. References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     15.1.  Normative References . . . . . . . . . . . . . . . . . .  15
     15.2.  Informative References . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  17

1.  Introduction

   Various link attributes have been defined in OSPFv2 [RFC2328] and
   OSPFv3 [RFC5340] in the context of the MPLS TE and GMPLS.  All these
   attributes are distributed by OSPFv2 as sub-TLVs of the Link-TLV
   advertised in the OSPFv2 TE Opaque LSA [RFC3630].  In OSPFv3, they
   are distributed as sub-TLVs of the Link-TLV advertised in the OSPFv3
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