OSPF Link Traffic Engineering Attribute Reuse
draft-ietf-ospf-te-link-attr-reuse-10

Document Type Active Internet-Draft (lsr WG)
Last updated 2020-01-09 (latest revision 2019-10-30)
Replaces draft-ppsenak-ospf-te-link-attr-reuse
Stream IETF
Intended RFC status Proposed Standard
Formats plain text pdf htmlized bibtex
Reviews
Stream WG state Submitted to IESG for Publication
Document shepherd Yingzhen Qu
Shepherd write-up Show (last changed 2020-01-10)
IESG IESG state AD Evaluation::Revised I-D Needed
Consensus Boilerplate Yes
Telechat date
Responsible AD Alvaro Retana
Send notices to Acee Lindem <acee@cisco.com>, Yingzhen Qu <yingzhen.qu@futurewei.com>, aretana.ietf@gmail.com
LSR Working Group                                         P. Psenak, Ed.
Internet-Draft                                               L. Ginsberg
Intended status: Standards Track                           Cisco Systems
Expires: May 2, 2020                                       W. Henderickx
                                                                   Nokia
                                                             J. Tantsura
                                                                  Apstra
                                                                J. Drake
                                                        Juniper Networks
                                                        October 30, 2019

             OSPF Link Traffic Engineering Attribute Reuse
               draft-ietf-ospf-te-link-attr-reuse-10.txt

Abstract

   Various link attributes have been defined in OSPF in the context of
   the MPLS Traffic Engineering (TE) and GMPLS.  Since the original
   RSVP-TE use case was defined, additional applications (e.g., SRTE,
   LFA) have been defined which also make use of the link attribute
   advertisements.  This document defines how to distribute link
   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.

   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/.

   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 May 2, 2020.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Psenak, et al.             Expires May 2, 2020                  [Page 1]
Internet-Draft        OSPF Link TE Attributes Reuse         October 2019

   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  . . . . . . . . . . . . . . . . . . . . . . . .   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
     8.1.  Use of TE LSA Advertisements  . . . . . . . . . . . . . .  10
     8.2.  Use of Zero Length Application Identifier Bit Masks . . .  11
   9.  Attribute Advertisements and Enablement . . . . . . . . . . .  11
   10. Backward Compatibility  . . . . . . . . . . . . . . . . . . .  12
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  13
   12. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
     12.1.  OSPFv2 . . . . . . . . . . . . . . . . . . . . . . . . .  13
     12.2.  OSPFv3 . . . . . . . . . . . . . . . . . . . . . . . . .  14
   13. Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  15
   14. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  15
   15. References  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     15.1.  Normative References . . . . . . . . . . . . . . . . . .  15
     15.2.  Informative References . . . . . . . . . . . . . . . . .  16
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  18

1.  Introduction

   Various link attributes have been defined in OSPFv2 [RFC2328] and
Show full document text