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.