Inter-Chassis Communication Protocol for Layer 2 Virtual Private Network (L2VPN) Provider Edge (PE) Redundancy (RFC7275)
Original Publication Date: 2014-Jun-01
Included in the Prior Art Database: 2014-Jun-27
Internet Society Requests For Comment (RFCs)
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.
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 http://www.rfc-editor.org/info/rfc7275.
Martini, et al. Standards Track [Page 1]
RFC 7275 ICCP for L2VPN PE Redundancy June 2014
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