Layer 2 Virtual Private Networks (l2vpn) ---------------------------------------- Charter Last Modified: 2007-03-01 Current Status: Active Working Group Chair(s): Shane Amante Vach Kompella Internet Area Director(s): Jari Arkko Mark Townsley Internet Area Advisor: Mark Townsley Technical Advisor(s): Alex Zinin Mailing Lists: General Discussion:l2vpn@ietf.org To Subscribe: https://www1.ietf.org/mailman/listinfo/l2vpn Archive: http://www.ietf.org/mail-archive/web/l2vpn/index.html Description of Working Group: Alex Zinin is the routing advisor. Russ Housley is the security advisor. This working group is responsible for defining and specifying a limited number of solutions for supporting provider-provisioned layer-2 virtual private networks (L2VPNs). The WG is responsible for standardization of the following solutions: 1. Virtual Private LAN Service (VPLS)--L2 service that emulates LAN across an IP and an MPLS-enabled IP network, allowing standard Ethernet devices communicate with each other as if they were connected to a common LAN segment. 2. Virtual Private Wire Service (VPWS)--L2 service that provides L2 point-to-point connectivity (e.g. Frame Relay DLCI, ATM VPI/VCI, point-to-point Ethernet) across an IP and an MPLS-enabled IP network. 3. IP-only VPNs -- An L2 service across an IP and MPLS-enabled IP network, allowing standard IP devices to communicate with each other as if they were connected to a common LAN or with some mesh of point-to-point circuits (not necessarily fully meshed). The WG will address both of the following cases: - the customer attachment uses the same L2 protocol at all attachment points in the L2VPN. - the customer attachment uses different L2 protocols at the attachment points in the L2VPN. This case is intended to address the needs of service providers who may start out with a single L2 protocol at attachment points, but wish to incrementally upgrade individual attachment points over time to newer technologies. This is a restricted form of "interworking" that is limited to providing the facilities necessary to carry IP over the L2VPN; general L2 interworking is not in scope. The WG will address intra-AS scenarios only at this point (other scenarios will be considered for inclusion in the updated charter when the current one is completed.) As a general rule, the WG will not create new protocols, but will provide functional requirements for extensions of the existing protocols that will be discussed in the protocol-specific WGs. As a specific example, this WG will not define new encapsulation mechanism, but will use those defined in the PWE3 WG. L2VPN WG will review proposed protocol extensions for L2VPNs before they are recommended to appropriate protocol-specific WGs. The WG will work on the following items. Adding new work items will require rechartering. 1. Discovery of PEs participating in L2 service, and topology of required connectivity 2. Signaling of l2vpn related information for the purpose of setup and maintenance of l2vpn circuits. As much as possible PWE3 signaling procedures should be used 3. Solution documents (providing the framework for a specific solution, should include info on how discovery, signaling, and encaps work together, include security, AS as a separate document) 4. MIBs 5. L2VPN-specific OAM extensions--extensions to existing OAM solutions for VPLS, VPWS, and IP-only L2VPNs. Where necessary, the WG will coordinate its activities with IEEE 802.1 Goals and Milestones: Aug 2003 Submit an I-D describing MIB for VPLS Aug 2003 Submit an I-D describing MIB for VPWS Aug 2003 Submit an I-D on OAM for VPLS Aug 2003 Submit an I-D on OAM for VPWS Oct 2003 Submit L2 requirements to IESG for publication as Informational RFC Done Identify VPLS and VPWS solutions for the WG Done Submit L2 framework to IESG for publication as Informational RFC Dec 2003 Submit VPLS solution documents to IESG Dec 2003 Submit VPWS solution documents to IESG Jan 2004 Submit IP-only L2VPN solution documents to IESG Feb 2004 Submit MIB for VPLS to IESG Feb 2004 Submit MIB for VPWS to IESG Mar 2004 Submit OAM for VPWS to IESG Mar 2004 Submit OAM for VPLS to IESG Apr 2004 Submit OAM for IP L2VPN to IESG Internet-Drafts: Posted Revised I-D Title ------ ------- -------------------------------------------- Sep 2003 May 2006 Provisioning, Autodiscovery, and Signaling in L2VPNs Nov 2003 Jul 2007 IP-Only LAN Service (IPLS) Oct 2004 Jul 2007 ARP Mediation for IP Interworking of Layer 2 VPN Aug 2007 Aug 2007 Virtual Private Lan Services (VPLS) Management Information Base Request For Comments: RFC Stat Published Title ------- -- ----------- ------------------------------------ RFC4665 I Sep 2006 Service Requirements for Layer 2 Provider Provisioned Virtual Private Networks RFC4664 I Sep 2006 Framework for Layer 2 Virtual Private Networks (L2VPNs) RFC4762 PS Jan 2007 Virtual Private LAN Service (VPLS) Using Label Distribution Protocol (LDP) Signaling RFC4761 PS Jan 2007 Virtual Private LAN Service (VPLS) Using BGP for Auto-discovery and Signaling