OSPFv3 LSA Extendibility
draft-ietf-ospf-ospfv3-lsa-extend-20

Document Type Active Internet-Draft (ospf WG)
Last updated 2018-01-11 (latest revision 2017-12-26)
Replaces draft-acee-ospfv3-lsa-extend
Stream IETF
Intended RFC status Proposed Standard
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Reviews
Stream WG state Submitted to IESG for Publication (wg milestone: Dec 2016 - Standardize OSPFv3 ... )
Document shepherd Peter Psenak
Shepherd write-up Show (last changed 2017-11-26)
IESG IESG state Waiting for Writeup
Consensus Boilerplate Yes
Telechat date On agenda of 2018-01-25 IESG telechat
Responsible AD Alia Atlas
Send notices to Peter Psenak <ppsenak@cisco.com>
IANA IANA review state IANA OK - Actions Needed
IANA action state None
Network Working Group                                          A. Lindem
Internet-Draft                                                    A. Roy
Updates: 5340, 5838 (if approved)                          Cisco Systems
Intended status: Standards Track                             D. Goethals
Expires: June 29, 2018                                             Nokia
                                                         V. Reddy Vallem

                                                                F. Baker
                                                       December 26, 2017

                        OSPFv3 LSA Extendibility
                draft-ietf-ospf-ospfv3-lsa-extend-20.txt

Abstract

   OSPFv3 requires functional extension beyond what can readily be done
   with the fixed-format Link State Advertisement (LSA) as described in
   RFC 5340.  Without LSA extension, attributes associated with OSPFv3
   links and advertised IPv6 prefixes must be advertised in separate
   LSAs and correlated to the fixed-format LSAs.  This document extends
   the LSA format by encoding the existing OSPFv3 LSA information in
   Type-Length-Value (TLV) tuples and allowing advertisement of
   additional information with additional TLVs.  Backward compatibility
   mechanisms are also described.

   This document updates RFC 5340, "OSPF for IPv6", and RFC 5838,
   "Support of Address Families in OSPFv3".

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 http://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 June 29, 2018.

Lindem, et al.            Expires June 29, 2018                 [Page 1]
Internet-Draft          OSPFv3 LSA Extendibility           December 2017

Copyright Notice

   Copyright (c) 2017 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
   (http://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
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   include Simplified BSD License text as described in Section 4.e of
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Requirements notation . . . . . . . . . . . . . . . . . .   4
     1.2.  OSPFv3 LSA Terminology  . . . . . . . . . . . . . . . . .   4
   2.  OSPFv3 Extended LSA Types . . . . . . . . . . . . . . . . . .   4
   3.  OSPFv3 Extended LSA TLVs  . . . . . . . . . . . . . . . . . .   5
     3.1.  Prefix Options Extensions . . . . . . . . . . . . . . . .   6
       3.1.1.  N-bit Prefix Option . . . . . . . . . . . . . . . . .   6
     3.2.  Router-Link TLV . . . . . . . . . . . . . . . . . . . . .   7
     3.3.  Attached-Routers TLV  . . . . . . . . . . . . . . . . . .   8
     3.4.  Inter-Area-Prefix TLV . . . . . . . . . . . . . . . . . .   9
     3.5.  Inter-Area-Router TLV . . . . . . . . . . . . . . . . . .  10
     3.6.  External-Prefix TLV . . . . . . . . . . . . . . . . . . .  11
     3.7.  Intra-Area-Prefix TLV . . . . . . . . . . . . . . . . . .  12
     3.8.  IPv6 Link-Local Address TLV . . . . . . . . . . . . . . .  13
     3.9.  IPv4 Link-Local Address TLV . . . . . . . . . . . . . . .  14
     3.10. IPv6-Forwarding-Address Sub-TLV . . . . . . . . . . . . .  15
     3.11. IPv4-Forwarding-Address Sub-TLV . . . . . . . . . . . . .  15
     3.12. Route-Tag Sub-TLV . . . . . . . . . . . . . . . . . . . .  16
   4.  OSPFv3 Extended LSAs  . . . . . . . . . . . . . . . . . . . .  16
     4.1.  OSPFv3 E-Router-LSA . . . . . . . . . . . . . . . . . . .  16
     4.2.  OSPFv3 E-Network-LSA  . . . . . . . . . . . . . . . . . .  18
     4.3.  OSPFv3 E-Inter-Area-Prefix-LSA  . . . . . . . . . . . . .  19
     4.4.  OSPFv3 E-Inter-Area-Router-LSA  . . . . . . . . . . . . .  20
     4.5.  OSPFv3 E-AS-External-LSA  . . . . . . . . . . . . . . . .  21
     4.6.  OSPFv3 E-NSSA-LSA . . . . . . . . . . . . . . . . . . . .  22
     4.7.  OSPFv3 E-Link-LSA . . . . . . . . . . . . . . . . . . . .  23
     4.8.  OSPFv3 E-Intra-Area-Prefix-LSA  . . . . . . . . . . . . .  25
   5.  Malformed OSPFv3 Extended LSA Handling  . . . . . . . . . . .  26
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