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Inter-Chassis Communication Protocol for Layer 2 Virtual Private Network (L2VPN) Provider Edge (PE) Redundancy (RFC7275) Disclosure Number: IPCOM000237606D
Original Publication Date: 2014-Jun-01
Included in the Prior Art Database: 2014-Jun-27

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

L. Martini: AUTHOR [+5]


Network availability is a critical metric for service providers, as it has a direct bearing on their profitability. Outages translate not only to lost revenue but also to potential penalties mandated by contractual agreements with customers running mission-critical applications that require tight Service Level Agreements (SLAs). This is true for any carrier network, and networks employing Layer 2 Virtual Private Network (L2VPN) technology are no exception. A high degree of network availability can be achieved by employing intra- and inter-chassis redundancy mechanisms. The focus of this document is on the latter. This document defines an Inter-Chassis Communication Protocol (ICCP) that allows synchronization of state and configuration data between a set of two or more Provider Edge nodes (PEs) forming a Redundancy Group (RG). The protocol supports multi-chassis redundancy mechanisms that can be employed on either the attachment circuits or pseudowires (PWs). A formal definition of the term "chassis" can be found in [RFC2922]. For the purpose of this document, a chassis is an L2VPN PE node.

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Internet Engineering Task Force (IETF)                        L. Martini Request for Comments: 7275                                      S. Salam Category: Standards Track                                     A. Sajassi ISSN: 2070-1721                                                    Cisco                                                                 M. Bocci                                                           Alcatel-Lucent                                                            S. Matsushima                                                         Softbank Telecom                                                                T. Nadeau                                                                  Brocade                                                                June 2014

                 Inter-Chassis Communication Protocol for  Layer 2 Virtual Private Network (L2VPN) Provider Edge (PE) Redundancy


   This document specifies an Inter-Chassis Communication Protocol    (ICCP) that enables Provider Edge (PE) device redundancy for Virtual    Private Wire Service (VPWS) and Virtual Private LAN Service (VPLS)    applications.  The protocol runs within a set of two or more PEs,    forming a Redundancy Group, for the purpose of synchronizing data    among the systems.  It accommodates multi-chassis attachment circuit    redundancy mechanisms as well as pseudowire redundancy mechanisms.

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

 Martini, et al.              Standards Track                    [Page 1]
 RFC 7275              ICCP for L2VPN PE Redundancy             June 2014

 Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the    document authors.  All rights reserved.