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LDP Extensions for Optimized MAC Address Withdrawal in H-VPLS
draft-ietf-l2vpn-vpls-ldp-mac-opt-13

Document type: Active Internet-Draft (l2vpn WG)
Document stream: IETF
Last updated: 2014-07-24 (latest revision 2014-06-27)
Intended RFC status: Proposed Standard
Other versions: plain text, pdf, html

IETF State: Submitted to IESG for Publication
Consensus: Yes
Document shepherd: Nabil Bitar
Shepherd Write-Up: Last changed 2014-03-11

IESG State: RFC Ed Queue
IANA Action State: RFC-Ed-Ack
RFC Editor State: EDIT
Responsible AD: Adrian Farrel
Send notices to: l2vpn-chairs@tools.ietf.org, draft-ietf-l2vpn-vpls-ldp-mac-opt@tools.ietf.org

Network Working Group                                           P. Dutta
Internet-Draft                                                  F. Balus
Intended status: Standards Track                          Alcatel-Lucent
Expires: December 29, 2014                                     O. Stokes
                                                        Extreme Networks
                                                            G. Calvignac
                                                                  Orange
                                                                D. Fedyk
                                                         Hewlett-Packard
                                                           June 27, 2014

     LDP Extensions for Optimized MAC Address Withdrawal in H-VPLS
                  draft-ietf-l2vpn-vpls-ldp-mac-opt-13

Abstract

   RFC4762 describes a mechanism to remove or unlearn MAC addresses that
   have been dynamically learned in a Virtual Private LAN Service (VPLS)
   Instance for faster convergence on topology change.  The procedure
   also removes MAC addresses in the VPLS that do not require relearning
   due to such topology change.  This document defines an enhancement to
   the MAC Address Withdrawal procedure with empty MAC List from
   RFC4762, which enables a Provider Edge(PE) device to remove only the
   MAC addresses that need to be relearned.  Additional extensions to
   RFC4762 MAC Withdrawal procedures are specified to provide optimized
   MAC flushing for the Provider Backbone Bridging (PBB)VPLS specified
   in RFC7041.

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
 

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Internet-Draft     Optimized MAC Withdrawal in H-VPLS      June 27, 2014

   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 31, 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
   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.

 

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  5
   3.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
     3.1.  MAC Flush on activation of backup spoke PW . . . . . . . .  7
       3.1.1.  PE-rs initiated MAC Flush  . . . . . . . . . . . . . .  8
       3.1.2.  MTU-s initiated MAC flush  . . . . . . . . . . . . . .  8
     3.2.  MAC Flush on failure . . . . . . . . . . . . . . . . . . .  9
     3.3.  MAC Flush in PBB-VPLS  . . . . . . . . . . . . . . . . . .  9
   4.  Problem Description  . . . . . . . . . . . . . . . . . . . . . 10
     4.1.  MAC Flush Optimization in VPLS Resiliency  . . . . . . . . 10
       4.1.1.  MAC Flush Optimization for regular H-VPLS  . . . . . . 10
       4.1.2.  MAC Flush Optimization for native Ethernet access  . . 12
     4.2.  Black holing issue in PBB-VPLS . . . . . . . . . . . . . . 13
   5.  Solution Description . . . . . . . . . . . . . . . . . . . . . 14
     5.1.  MAC Flush Optimization for VPLS Resiliency . . . . . . . . 14
       5.1.1.  MAC Flush Parameters TLV . . . . . . . . . . . . . . . 15

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