OSPF Extensions for Broadcast Inter-AS TE Link
draft-chen-ospf-ias-lk-00

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OSPF Working Group                                               H. Chen
Internet-Draft                                       Huawei Technologies
Intended status: Standards Track                                  M. Toy
Expires: September 14, 2017                                      Verizon
                                                                  X. Liu
                                                                   Jabil
                                                                  L. Liu
                                                                 Fujitsu
                                                                   Z. Li
                                                            China Mobile
                                                                 Y. Yang
                                                                Sockrate
                                                          March 13, 2017

             OSPF Extensions for Broadcast Inter-AS TE Link
                       draft-chen-ospf-ias-lk-00

Abstract

   This document presents extensions to the Open Shortest Path First
   (OSPF) for advertising broadcast inter-AS Traffic Engineering (TE)
   links.

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 September 14, 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

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Internet-Draft              inter-as-te-link                  March 2017

   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions Used in This Document . . . . . . . . . . . . . .   3
   3.  Information on Inter-AS TE Link . . . . . . . . . . . . . . .   3
   4.  Extensions to OSPF  . . . . . . . . . . . . . . . . . . . . .   3
     4.1.  sub-TLVs  . . . . . . . . . . . . . . . . . . . . . . . .   3
     4.2.  Procedures  . . . . . . . . . . . . . . . . . . . . . . .   4
       4.2.1.  OSPF Router Procedure . . . . . . . . . . . . . . . .   4
       4.2.2.  Super Node Procedure  . . . . . . . . . . . . . . . .   5
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   7.  Acknowledgement . . . . . . . . . . . . . . . . . . . . . . .   5
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   6
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   6

1.  Introduction

   Connections among different Autonomous Systems (ASes) may be point-
   to-point (P2P) links and broadcast links.  For a P2P inter-AS TE
   link, RFC 5392 defines a new Opaque LSA, the Inter-AS-TE-v2 LSA, for
   advertising the OSPFv2 link; and a new OSPFv3 LS type, Inter-AS-TE-v3
   LSA, for advertising the OSPFv3 link.

   Both the Inter-AS-TE-v2 LSA and Inter-AS-TE-v3 LSA contain one top
   level TLV:

    2 -   Link TLV

   The Link TLV describes a single link and includes a set of sub-TLVs.

   The Link ID sub-TLV defined in RFC 3630 MUST NOT be used in the Link
   TLV of an Inter-AS-TE-v2 LSA, and the Neighbor ID sub-TLV defined in
   RFC 5329 MUST NOT be used in the Link TLV of an Inter-AS-TE-v3 LSA.

   Instead, the remote ASBR is identified by the inclusion of Remote AS
   Number sub-TLV and IPv4/IPv6 Remote ASBR ID sub-TLV, which is defined
   in RFC 5392.

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