Transparent Interconnection of Lots of Links (TRILL): Address Flush Message
RFC 8383

Document Type RFC - Proposed Standard (May 2018; No errata)
Last updated 2018-05-31
Replaces draft-hao-trill-address-flush
Stream IETF
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Stream WG state Submitted to IESG for Publication
Document shepherd Susan Hares
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IESG IESG state RFC 8383 (Proposed Standard)
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Responsible AD Alia Atlas
Send notices to "Susan Hares" <shares@ndzh.com>
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Internet Engineering Task Force (IETF)                            W. Hao
Request for Comments: 8383                              D. Eastlake, 3rd
Category: Standards Track                                          Y. Li
ISSN: 2070-1721                                                   Huawei
                                                                M. Umair
                                                                   Cisco
                                                                May 2018

         Transparent Interconnection of Lots of Links (TRILL):
                         Address Flush Message

Abstract

   The TRILL (Transparent Interconnection of Lots of Links) protocol, by
   default, learns end station addresses from observing the data plane.
   In particular, it learns local Media Access Control (MAC) addresses
   and the edge switch port of attachment from the receipt of local data
   frames and learns remote MAC addresses and the edge switch port of
   attachment from the decapsulation of remotely sourced TRILL Data
   packets.

   This document specifies a message by which a TRILL switch can
   explicitly request other TRILL switches to flush certain MAC
   reachability learned through the decapsulation of TRILL Data packets.
   This is a supplement to the TRILL automatic address forgetting (see
   Section 4.8.3 of RFC 6325) and can assist in achieving more rapid
   convergence in case of topology or configuration change.

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
   https://www.rfc-editor.org/info/rfc8383.

Hao, et al.                  Standards Track                    [Page 1]
RFC 8383               TRILL Address Flush Message              May 2018

Copyright Notice

   Copyright (c) 2018 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
   (https://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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology and Abbreviations . . . . . . . . . . . . . .   3
   2.  Address Flush Message Details . . . . . . . . . . . . . . . .   5
     2.1.  VLAN Block Only Case  . . . . . . . . . . . . . . . . . .   6
     2.2.  Extensible Case . . . . . . . . . . . . . . . . . . . . .   8
       2.2.1.  Blocks of VLANs . . . . . . . . . . . . . . . . . . .  12
       2.2.2.  Bit Map of VLANs  . . . . . . . . . . . . . . . . . .  12
       2.2.3.  Blocks of FGLs  . . . . . . . . . . . . . . . . . . .  13
       2.2.4.  list of FGLs  . . . . . . . . . . . . . . . . . . . .  13
       2.2.5.  Big Map of FGLs . . . . . . . . . . . . . . . . . . .  14
       2.2.6.  All Data Labels . . . . . . . . . . . . . . . . . . .  14
       2.2.7.  MAC Address List  . . . . . . . . . . . . . . . . . .  15
       2.2.8.  MAC Address Blocks  . . . . . . . . . . . . . . . . .  16
   3.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  17
     3.1.  Address Flush RBridge Channel Protocol Number . . . . . .  17
     3.2.  TRILL Address Flush TLV Types . . . . . . . . . . . . . .  17
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  17
   5.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  18
     5.1.  Normative References  . . . . . . . . . . . . . . . . . .  18
     5.2.  Informative References  . . . . . . . . . . . . . . . . .  19
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .  19
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  20

Hao, et al.                  Standards Track                    [Page 2]
RFC 8383               TRILL Address Flush Message              May 2018

1.  Introduction

   By default, edge TRILL (Transparent Interconnection of Lots of Links)
   switches [RFC6325] [RFC7780], also called edge Routing Bridges
   (RBridges), learn end station MAC address reachability from observing
   the data plane.  On receipt of a native frame from an end station,
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