The IESG has approved the following document: - 'Multicast in VPLS' (draft-ietf-l2vpn-vpls-mcast-16.txt) as Proposed Standard This document is the product of the Layer 2 Virtual Private Networks Working Group. The IESG contact persons are Stewart Bryant and Adrian Farrel. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-l2vpn-vpls-mcast/ Technical Summary [RFC4761] and [RFC4762] describe a solution for Virtual Private LAN Service (VPLS) multicast that relies on the use of point-to-point or multipoint-to-point unicast Label Switched Paths (LSPs) for carrying multicast traffic. This solution has certain limitations for certain VPLS multicast traffic profiles. For example, it may result in highly non-optimal bandwidth utilization when large amount of multicast traffic is to be transported. This document describes solutions for overcoming a subset of the limitations of existing VPLS multicast solution. It describes procedures for VPLS multicast that utilize multicast trees in the service provider (SP) network. The solution described in this document allows sharing of one such multicast tree among multiple VPLS instances. Furthermore, the solution described in this document allows a single multicast tree in the SP network to carry traffic belonging only to a specified set of one or more IP multicast streams from one or more VPLS instances. Working Group Summary This document is an L2VPN Working Group document, and has been well reviewed in the working group through multiple iterations of the draft and WG last calls. The authors have addressed the comments received on the mailing list and the WG chairs. The draft was last-called after those comments were addressed and passed the WG last call. The document then received considerable review after it left the WG and has been updated accordingly. Document Quality The document has good quality. It is clear on the technical content and written with good English and layout. Personnel Document Shepherd: Nabil Bitar (nabil.n.bitar@verizon.com) Area Director: Stewart Bryant (stbryant@cisco.com)
