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TRILL: RBridge Channel Support
draft-ietf-trill-rbridge-channel-08

TRILL Working Group                                      Donald Eastlake
INTERNET-DRAFT                                                    Huawei
Intended status: Proposed Standard                        Vishwas Manral
                                                           HP Networking
                                                               Li Yizhou
                                                              Sam Aldrin
                                                                  Huawei
                                                               Dave Ward
                                                                   Cisco
Expires: January 12, 2013                                  July 13, 2012

                     TRILL: RBridge Channel Support
               <draft-ietf-trill-rbridge-channel-08.txt>

Abstract

   This document specifies a general channel mechanism for sending
   messages, such as BFD (Bidirectional Forwarding Detection) messages,
   between RBridges (Routing Bridges) and between RBridges and end
   stations in an RBridge campus through extensions to the TRILL
   (TRansparent Interconnection of Lots of Links) protocol.

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 TRILL working group mailing list.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
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   Drafts.

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D. Eastlake, et al                                              [Page 1]
INTERNET-DRAFT                                    TRILL: RBridge Channel

Table of Contents

      1. Introduction............................................3
      1.1 RBridge Channel Requirements...........................3
      1.2 Relation to the MPLS Generic Channel...................4
      1.3 Terminology............................................4

      2. Inter-RBridge Channel Messages..........................5
      2.1 The RBridge Channel Message Inner Frame................6
      2.1.1 RBridge Channel Header...............................6
      2.1.1 Inner Ethernet Header................................8
      2.1.3 Inner.VLAN Tag.......................................8
      2.2 The TRILL Header for RBridge Channel Messages..........9
      2.3 Ethernet Link Header and Trailer......................10
      2.4 Special Transmission and Rate Considerations..........11

      3. Processing RBridge Channel TRILL Data Messages.........12
      3.1 Processing the RBridge Channel Header.................12
      3.2 RBridge Channel Errors................................13

      4. Native RBridge Channel Frames..........................15
      5. Indicating Support for RBridge Channel Protocols.......17
      6. Congestion Considerations..............................18

      7. Allocation Considerations..............................19
      7.1 IANA Considerations...................................19
      7.2 IEEE Registration Authority Considerations............20

      8. Security Considerations................................21

      9. References.............................................22
      9.1 Normative References..................................22
      9.2 Informative References................................23

      Appendix: Change History..................................24
      Acknowledgments...........................................27

D. Eastlake, et al                                              [Page 2]
INTERNET-DRAFT                                    TRILL: RBridge Channel

1. Introduction

   RBridge campuses provide transparent least-cost forwarding using the
   TRILL (TRansparent Interconnection of Lots of Links) protocol that
   builds on IS-IS (Intermediate System to Intermediate System) routing
   [IS-IS] [RFC1195] [RFC6326bis].  Devices that implement TRILL are
   called RBridges (Routing Bridges) or TRILL Switches. However, the
   TRILL base protocol standard [RFC6325] provides only for TRILL Data
   messages and TRILL IS-IS messages.

   This document specifies a general channel mechanism for the

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