Transparent Interconnection of Lots of Links (TRILL): RBridge Channel Header Extension
RFC 7978

Document Type RFC - Proposed Standard (September 2016; No errata)
Updates RFC 7178
Last updated 2016-09-30
Replaces draft-eastlake-trill-channel-tunnel
Stream IETF
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Stream WG state Submitted to IESG for Publication
Document shepherd Susan Hares
Shepherd write-up Show (last changed 2016-02-08)
IESG IESG state RFC 7978 (Proposed Standard)
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Internet Engineering Task Force (IETF)                   D. Eastlake 3rd
Request for Comments: 7978                                        Huawei
Updates: 7178                                                   M. Umair
Category: Standards Track                                     IPinfusion
ISSN: 2070-1721                                                    Y. Li
                                                                  Huawei
                                                          September 2016

         Transparent Interconnection of Lots of Links (TRILL):
                    RBridge Channel Header Extension

Abstract

   The IETF TRILL (Transparent Interconnection of Lots of Links)
   protocol includes an optional mechanism (specified in RFC 7178)
   called RBridge Channel for the transmission of typed messages between
   TRILL switches in the same campus and the transmission of such
   messages between TRILL switches and end stations on the same link.
   This document specifies extensions to the RBridge Channel protocol
   header to support two features as follows: (1) a standard method to
   tunnel payloads whose type can be indicated by Ethertype through
   encapsulation in RBridge Channel messages; and (2) a method to
   support security facilities for RBridge Channel messages.  This
   document updates RFC 7178.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7978.

Eastlake, et al.             Standards Track                    [Page 1]
RFC 7978            TRILL: RBridge Channel Extension      September 2016

Copyright Notice

   Copyright (c) 2016 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
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Eastlake, et al.             Standards Track                    [Page 2]
RFC 7978            TRILL: RBridge Channel Extension      September 2016

Table of Contents

   1. Introduction ....................................................4
      1.1. Terminology and Acronyms ...................................4
   2. RBridge Channel Header Extension Format .........................5
   3. Extended RBridge Channel Payload Types ..........................8
      3.1. Null Payload ...............................................8
      3.2. Ethertyped Payload .........................................9
           3.2.1. RBridge Channel Message as the Payload ..............9
           3.2.2. TRILL Data Packet as the Payload ...................10
           3.2.3. TRILL IS-IS Packet as the Payload ..................10
      3.3. Ethernet Frame ............................................11
   4. Extended RBridge Channel Security ..............................13
      4.1. Derived Keying Material ...................................14
      4.2. SType None ................................................14
      4.3. IS-IS CRYPTO_AUTH-Based Authentication ....................15
      4.4. DTLS Pairwise Security ....................................17
      4.5. Composite Security ........................................18
   5. Extended RBridge Channel Errors ................................18
      5.1. SubERRs ...................................................19
      5.2. Secure Nested RBridge Channel Errors ......................19
   6. IANA Considerations ............................................19
      6.1. Extended RBridge Channel Protocol Number ..................19
      6.2. RBridge Channel Protocol Subregistries ....................20
           6.2.1. RBridge Channel Error Codes ........................20
           6.2.2. RBridge Channel SubError Codes .....................20
           6.2.3. Extended RBridge Channel Payload Types
                  Subregistry ........................................20
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