Distribution of TRILL Link-State using BGP
draft-ietf-idr-ls-trill-05

Document Type Active Internet-Draft (idr WG)
Last updated 2018-10-20 (latest revision 2018-10-13)
Replaces draft-hao-idr-ls-trill
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INTERNET-DRAFT                                               D. Eastlake
Intended status: Proposed Standard                                W. Hao
Updates: 7752                                                      Y. Li
                                                                  Huawei
                                                                S. Gupta
                                                             IP Infusion
                                                              M. Durrani
                                                                 Equinix
Expires: April 12, 2018                                 October 13, 2018

               Distribution of TRILL Link-State using BGP
                    <draft-ietf-idr-ls-trill-05.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. This document updates RFC 7752.

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.......................................6
      3.1.1 IGP Router-ID........................................7
      3.2 MAC Address Descriptors................................7
      3.2.1 MAC-Reachability TLV.................................8
      3.3 The BGP-LS Attributes..................................8
      3.3.1 Node Attribute TLVs..................................8
      3.3.1.1 Node Flag Bits TLV.................................9
      3.3.1.2 Opaque Node Attribute TLV..........................9
      3.3.2. Link Attribute TLVs.................................9

      4. Operational Considerations.............................10
      5. Security Considerations................................11
      6. IANA Considerations....................................12

      Normative References......................................13
      Informative References....................................14

      Acknowledgments...........................................14
      Authors' Addresses........................................15

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] [RFC7780] 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
   for the data center network. Providing a holistic view of whole
   network topology to the SDN controller is an important part of data
   center network automation and troubleshooting.

                           +-------------+
                           |     SDN     |
                   --------|  Controller |--------
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