[PWE3] Optimized MAC Address Operations in VPLS with Redundancy

Hi, all:

In VPLS with redundancy scenarios such as defined in draft-ietf-pwe3-redundancy-00.txt

or in draft-pdutta-l2vpn-vpls-ldp-mac-opt-03.txt, MAC address withdrawal mechanism

is introduced in RFC 4762 for faster convergence.

In progress work of draft-pdutta-l2vpn-vpls-ldp-mac-opt-03.txt enhances the mechanism

by flushing only the affected MAC addresses. This method may greatly restrict the scope

of MAC flushing under some circumstances. That's really a good job.

But in VPLS with redundancy, as the relation of the working PW and the protection PW is

determined in advance, flushing is not the best choice. So this draft provides two

mechanisms: MAC address switching and MAC address notification. With these two

mechanisms MAC address flushing can be removed completely.

A New Internet-Draft is available from the on-line Internet-Drafts
directories.

Title : Optimized MAC Address Operations in VPLS with Redundancy
Author(s) : Y. Jiang, Y. Yang
Filename : draft-jiang-l2vpn-vpls-mac-operation-00.txt
Pages : 16
Date : 2008-6-24

The Virtual Private LAN Service (VPLS) Using Label Distribution
Protocol (LDP) Signaling is described in RFC 4762. That document
describes a mechanism called MAC Address Withdrawal to remove or
unlearn MAC addresses which have been dynamically learned in a VPLS
instance. Further work in progress defines an extension to MAC
Address Withdrawal procedure which can greatly restrict the scope of
MAC flushing. This document provides two mechanisms which completely
remove the need for MAC address flushing in VPLS instances. The
mechanisms are MAC address switching and MAC address notification.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-jiang-l2vpn-vpls-mac-operation-00.txt

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
->

Please comment on the idea.

Regards,

Y.L. Jiang