Transparent Interconnection of Lots of Links (TRILL): Fault Management
RFC 7455

Document Type RFC - Proposed Standard (March 2015; No errata)
Updates RFC 6325
Last updated 2015-10-14
Replaces draft-tissa-trill-oam-fm
Stream IETF
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Stream WG state Submitted to IESG for Publication Jan 2013
Document shepherd Susan Hares
Shepherd write-up Show (last changed 2014-06-04)
IESG IESG state RFC 7455 (Proposed Standard)
Consensus Boilerplate Yes
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Responsible AD Ted Lemon
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IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
Internet Engineering Task Force (IETF)                   T. Senevirathne
Request for Comments: 7455                                       N. Finn
Updates: 6325                                                   S. Salam
Category: Standards Track                                       D. Kumar
ISSN: 2070-1721                                                    Cisco
                                                         D. Eastlake 3rd
                                                               S. Aldrin
                                                                   Y. Li
                                                                  Huawei
                                                              March 2015

 Transparent Interconnection of Lots of Links (TRILL): Fault Management

Abstract

   This document specifies Transparent Interconnection of Lots of Links
   (TRILL) Operations, Administration, and Maintenance (OAM) fault
   management.  Methods in this document follow the CFM (Connectivity
   Fault Management) framework defined in IEEE 802.1 and reuse OAM tools
   where possible.  Additional messages and TLVs are defined for TRILL-
   specific applications or for cases where a different set of
   information is required other than CFM as defined in IEEE 802.1.
   This document updates RFC 6325.

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 5741.

   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/rfc7455.

Senevirathne, et al.         Standards Track                    [Page 1]
RFC 7455                 TRILL Fault Management               March 2015

Copyright Notice

   Copyright (c) 2015 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.

Senevirathne, et al.         Standards Track                    [Page 2]
RFC 7455                 TRILL Fault Management               March 2015

Table of Contents

   1. Introduction ....................................................5
   2. Conventions Used in This Document ...............................5
   3. General Format of TRILL OAM Packets .............................6
      3.1. Identification of TRILL OAM Frames .........................8
      3.2. Use of TRILL OAM Alert Flag ................................8
           3.2.1. Handling of TRILL Frames with the "A" Flag ..........9
      3.3. OAM Capability Announcement ................................9
      3.4. Identification of the OAM Message .........................10
   4. TRILL OAM Layering vs. IEEE Layering ...........................11
      4.1. Processing at the ISS Layer ...............................12
           4.1.1. Receive Processing .................................12
           4.1.2. Transmit Processing ................................12
      4.2. End-Station VLAN and Priority Processing ..................12
           4.2.1. Receive Processing .................................12
           4.2.2. Transmit Processing ................................12
      4.3. TRILL Encapsulation and Decapsulation Layer ...............12
           4.3.1. Receive Processing for Unicast Packets .............12
           4.3.2. Transmit Processing for Unicast Packets ............13
           4.3.3. Receive Processing for Multicast Packets ...........14
           4.3.4. Transmit Processing of Multicast Packets ...........15
      4.4. TRILL OAM Layer Processing ................................16
   5. Maintenance Associations (MAs) in TRILL ........................17
   6. MEP Addressing .................................................18
      6.1. Use of MIP in TRILL .......................................21
   7. Continuity Check Message (CCM) .................................22
   8. TRILL OAM Message Channel ......................................25
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