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MAC Address Withdrawal over Static Pseudowire
draft-boutros-l2vpn-mpls-tp-mac-wd-03

Document type: Active Internet-Draft (individual)
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Last updated: 2014-04-02
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Network Working Group                                       S. Sivabalan
Internet-Draft                                                S. Boutros
Intended status: Standards Track                     Cisco Systems, Inc.
Expires: October 4, 2014                                         H. Shah
                                                             Ciena Corp.
                                                               S. Aldrin
                                                    Huawei Technologies.
                                                           M. Venkatesan
                                                                Comcast.
                                                          April 02, 2014

             MAC Address Withdrawal over Static Pseudowire
               draft-boutros-l2vpn-mpls-tp-mac-wd-03.txt

Abstract

   This document specifies a mechanism to signal MAC address withdrawal
   notification using PW Associated Channel (ACH).  Such notification is
   useful when statically provisioned PWs are deployed in VPLS/H-VPLS
   environment.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on October 4, 2014.

Sivabalan, et al.        Expires October 4, 2014                [Page 1]
Internet-Draft    MAC Withdrawal over Static Pseudowire       April 2014

Copyright Notice

   Copyright (c) 2014 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
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   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  MAC Withdraw OAM Message  . . . . . . . . . . . . . . . . . .   3
   4.  Operation . . . . . . . . . . . . . . . . . . . . . . . . . .   5
     4.1.  Operation of Sender . . . . . . . . . . . . . . . . . . .   5
     4.2.  Operation of Receiver . . . . . . . . . . . . . . . . . .   5
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .   6
     6.2.  Informative References  . . . . . . . . . . . . . . . . .   7
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   7

1.  Introduction

   An LDP-based MAC Address Withdrawal Mechanism is specified in
   [RFC4762] to remove dynamically learned MAC addresses when the source
   of those addresses can no longer forward traffic.  This is
   accomplished by sending an LDP Address Withdraw Message with a MAC
   List TLV containing the MAC addressed to be removed to all other PEs
   over LDP sessions.  When the number of MAC addresses to be removed is
   large, empty MAC List TLV may be used.  [MAC-OPT] describes an
   optimized MAC withdrawal mechanism which can be used to remove only
   the set of MAC addresses that need to be re-learned in H-VPLS
   networks.  The solution also provides optimized MAC Withdrawal
   operations in PBB-VPLS networks.

   A PW can be signaled via LDP or can be statically provisioned.  In
   the case of static PW, LDP based MAC withdrawal mechanism cannot be
   used.  This is analogous to the problem and solution described in
   [RFC4762]  where PW OAM message has been introduced to carry PW

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