Distribution of TRILL Link-State using BGP
draft-ietf-idr-ls-trill-03

Document Type Active Internet-Draft (idr WG)
Last updated 2017-10-19 (latest revision 2017-10-03)
Replaces draft-hao-idr-ls-trill
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INTERNET-DRAFT                                               D. Eastlake
Intended status: Proposed Standard                                W. Hao
                                                                  Huawei
                                                                S. Hares
                                                 Hickory Hill Consulting
                                                                S. Gupta
                                                             IP Infusion
                                                              M. Durrani
                                                                   Cisco
                                                                   Y. Li
                                                                  Huawei
Expires: April 2, 2018                                   October 3, 2017

               Distribution of TRILL Link-State using BGP
                    <draft-ietf-idr-ls-trill-03.txt>

Abstract

   This draft describes a TRILL link state and MAC address reachability
   information distribution mechanism using a BGP LS extension.
   External components such as an SDN Controller can use the information
   for topology visibility, troubleshooting, network automation, and the
   like.

Status of This Memo

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

   Distribution of this document is unlimited. Comments should be sent
   to the authors or the IDR working group mailing list: idr@ietf.org.

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D. Eastlake et al.                                              [Page 1]
INTERNET-DRAFT                                          BGP LS For TRILL

Table of Contents

      1. Introduction............................................3
      2. Conventions used in this document.......................5

      3. Carrying TRILL Link-State Information in BGP............6
      3.1 Node Descriptors.......................................7
      3.1.1 IGP Router-ID........................................8
      3.2 MAC Address Descriptors................................8
      3.2.1 MAC-Reachability TLV.................................9
      3.3 The BGP-LS Attribute...................................9
      3.3.1 Node Attribute TLVs..................................9
      3.3.1.1 Node Flag Bits TLV................................10
      3.3.1.2 Opaque Node Attribute TLV.........................10
      3.3.2. Link Attribute TLVs................................11

      4. Operational Considerations.............................12

      5. Security Considerations................................13
      6. IANA Considerations....................................13

      Normative References......................................14
      Informative References....................................14
      Acknowledgments...........................................15

      Authors' Addresses........................................16

D. Eastlake et al.                                              [Page 2]
INTERNET-DRAFT                                          BGP LS For TRILL

1. Introduction

   BGP has been extended to distribute IGP link-state and traffic
   engineering information to some external components [RFC7752], such
   as the PCE and ALTO servers. The information can be used by these
   external components to compute a MPLS-TE path across IGP areas,
   visualize and abstract network topology, and the like.

   TRILL (Transparent Interconnection of Lots of Links) protocol
   [RFC6325] provides a solution for least cost transparent routing in
   multi-hop networks with arbitrary topologies and link technologies,
   using [IS-IS] [RFC7176] link-state routing and a hop count. TRILL
   switches are sometimes called RBridges (Routing Bridges).

   The TRILL protocol has been deployed in many data center networks.
   Data center automation is a vital step to increase the speed and
   agility of business. An SDN controller as an external component
   normally can be used to provide centralized control and automation
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