Network Working Group P. Dutta
Internet-Draft F. Balus
Intended status: Standards Track Alcatel-Lucent
Expires: August 29, 2013 O. Stokes
Extreme Networks
G. Calvinac
France Telecom
February 25, 2013
LDP Extensions for Optimized MAC Address Withdrawal in H-VPLS
draft-ietf-l2vpn-vpls-ldp-mac-opt-08
Abstract
[RFC4762] describes a mechanism to remove or unlearn MAC addresses
that have been dynamically learned in a 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 [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 PBB-VPLS specified in [I-D.ietf-l2vpn-pbb-vpls-pe-model] .
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
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Internet-Drafts are draft documents valid for a maximum of six months
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material or to cite them other than as "work in progress."
This Internet-Draft will expire on August 29, 2013.
Dutta, et al. Expires August 29, 2013 [Page 1]
Internet-Draft Optimized MAC Withdrawal in H-VPLS February 2013
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Table of Contents
1. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1. MAC Flush on activation of backup spoke PW . . . . . . . . 5
2.1.1. PE-rs initiated MAC Flush . . . . . . . . . . . . . . 6
2.1.2. MTU-s initiatied MAC flush . . . . . . . . . . . . . . 6
2.2. MAC Flush on failure . . . . . . . . . . . . . . . . . . . 7
2.3. MAC Flush in PBB-VPLS . . . . . . . . . . . . . . . . . . 7
3. Problem Description . . . . . . . . . . . . . . . . . . . . . 8
3.1. MAC Flush Optimization in VPLS Resiliency . . . . . . . . 8
3.1.1. MAC Flush Optimization for regular H-VPLS . . . . . . 8
3.1.2. MAC Flush Optimization for native Ethernet access . . 10
3.2. Black holing issue in PBB-VPLS . . . . . . . . . . . . . . 11
4. Solution Description . . . . . . . . . . . . . . . . . . . . . 12
4.1. MAC Flush Optimization for VPLS Resiliency . . . . . . . . 12
4.1.1. MAC Flush Parameters TLV . . . . . . . . . . . . . . . 13
4.1.2. Application of MAC Flush TLV in Optimized MAC Flush . 14
4.1.3. MAC Flush TLV Processing Rules for Regular VPLS . . . 14
4.1.4. Optimized MAC Flush Procedures . . . . . . . . . . . . 15
4.2. LDP MAC Flush Extensions for PBB-VPLS . . . . . . . . . . 16
4.2.1. MAC Flush TLV Processing Rules for PBB-VPLS . . . . . 17
4.2.2. Applicability of MAC Flush Parameters TLV . . . . . . 19
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