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LDP Extensions for Optimized MAC Address Withdrawal in a Hierarchical Virtual Private LAN Service (H-VPLS) (RFC7361) Disclosure Number: IPCOM000238695D
Original Publication Date: 2014-Sep-01
Included in the Prior Art Database: 2014-Sep-12
Document File: 54 page(s) / 63K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

P. Dutta: AUTHOR [+5]


A method of Virtual Private LAN Service (VPLS), also known as Transparent LAN Services (TLS), is described in [RFC4762]. A VPLS is created using a collection of one or more point-to-point pseudowires (PWs) [RFC4664] configured in a flat, full-mesh topology. The mesh topology provides a LAN segment or broadcast domain that is fully capable of learning and forwarding on Ethernet Media Access Control (MAC) addresses at the Provider Edge (PE) devices.

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Internet Engineering Task Force (IETF)                          P. Dutta Request for Comments: 7361                                      F. Balus Category: Standards Track                                 Alcatel-Lucent ISSN: 2070-1721                                                O. Stokes                                                         Extreme Networks                                                             G. Calvignac                                                                   Orange                                                                 D. Fedyk                                                          Hewlett-Packard                                                           September 2014

           LDP Extensions for Optimized MAC Address Withdrawal          in a Hierarchical Virtual Private LAN Service (H-VPLS)


   RFC 4762 describes a mechanism to remove or unlearn Media Access    Control (MAC) addresses that have been dynamically learned in a    Virtual Private LAN Service (VPLS) instance for faster convergence on    topology changes.  The procedure also removes MAC addresses in the    VPLS that do not require relearning due to such topology changes.    This document defines an enhancement to the MAC address withdraw    procedure with an empty MAC list (RFC 4762); this enhancement enables    a Provider Edge (PE) device to remove only the MAC addresses that    need to be relearned.  Additional extensions to RFC 4762 MAC withdraw    procedures are specified to provide an optimized MAC flushing for the    Provider Backbone Bridging (PBB) VPLS specified in RFC 7041.

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 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at

Dutta, et al.                Standards Track                    [Page 1]
 RFC 7361           Optimized MAC Withdrawal in H-VPLS     September 2014