The IESG has approved the following document: - 'Virtual Hub-and-Spoke in BGP/MPLS VPNs' (draft-ietf-l3vpn-virtual-hub-08.txt) as Proposed Standard This document is the product of the Layer 3 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-l3vpn-virtual-hub/ Technical Summary With BGP/MPLS VPNs, providing any-to-any connectivity among sites of a given Virtual Private Network would require each Provider Edge router that has one or more of these sites connected to it to hold all the routes of that Virtual Private Network. The approach described in this document allows to reduce the number of Provider Edge routers that have to maintain all these routes by requiring only a subset of these routers to maintain all these routes. Furthermore, when Provider Edge routers use ingress replication to carry multicast traffic of VPN customers, the approach described in this document may under certain circumstances allow to reduce bandwidth inefficiency associated with ingress replication, and to redistribute the replication load among Provider Edge routers. Working Group Summary Nothing particular (There was no objection from working group contributors during adoption, not real objection during WGLC, except for one comment challenging the scope of the document but without a follow-up from the commenter). Document Quality There are no concerns about the document quality. An extensive review was done on WGLC by Eric Rosen (co-author of BGP/MPLS specifications to which these specifications relate), which were resolved after substantive changes to the document. No information has been provided related to current implementations or plans for implementations. Personnel Document Shepherd is Thomas Morin. Responsible Area Director is Stewart Bryant.
