LDP Extensions for Multi Topology Routing
draft-ietf-mpls-ldp-multi-topology-03

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Document Type Active Internet-Draft (mpls WG)
Last updated 2012-03-11
Replaces draft-zhao-mpls-ldp-multi-topology
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Internet Engineering Task Force                                  Q. Zhao
Internet-Draft                                         Huawei Technology
Intended status: Standards Track                                 L. Fang
Expires: September 12, 2012                                      C. Zhou
                                                           Cisco Systems
                                                                   L. Li
                                                            China Mobile
                                                                   N. So
                                                        Verizon Business
                                                               K. Kamran
                                                           Cisco Systems
                                                          March 11, 2012

               LDP Extensions for Multi Topology Routing
               draft-ietf-mpls-ldp-multi-topology-03.txt

Abstract

   Multi-Topology (MT) routing is supported in IP networks with the use
   of MT aware IGP protocols.  In order to provide MT routing within
   Multiprotocol Label Switching (MPLS) Label Distribution Protocol
   (LDP) networks new extensions are required.

   This document describes the LDP protocol extensions required to
   support MT routing in an MPLS environment.

Status of this Memo

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   This Internet-Draft will expire on September 12, 2012.

Copyright Notice

   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Zhao, et al.           Expires September 12, 2012               [Page 1]
Internet-Draft        LDP Multi Topology Extensions           March 2012

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   it for publication as an RFC or to translate it into languages other
   than English.

Zhao, et al.           Expires September 12, 2012               [Page 2]
Internet-Draft        LDP Multi Topology Extensions           March 2012

Table of Contents

   1.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  4
   2.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
   3.  Requirements . . . . . . . . . . . . . . . . . . . . . . . . .  4
   4.  Signaling Extensions . . . . . . . . . . . . . . . . . . . . .  5
     4.1.  Topology-Scoped FEC  . . . . . . . . . . . . . . . . . . .  5
     4.2.  New Address Families: MT IP  . . . . . . . . . . . . . . .  5
     4.3.  LDP FEC Elements with MT IP AF . . . . . . . . . . . . . .  7
     4.4.  IGP MT-ID Mapping and Translation  . . . . . . . . . . . .  8
     4.5.  LDP MT Capability Advertisement  . . . . . . . . . . . . .  8
     4.6.  Procedures . . . . . . . . . . . . . . . . . . . . . . . .  9
     4.7.  LDP Sessions . . . . . . . . . . . . . . . . . . . . . . . 10
     4.8.  Reserved MT ID Values  . . . . . . . . . . . . . . . . . . 11
   5.  MT Applicability on FEC-based features . . . . . . . . . . . . 11
     5.1.  Typed Wildcard FEC Element . . . . . . . . . . . . . . . . 11
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