Technical Summary
In order for IP multicast traffic within a BGP/MPLS IP VPN (Virtual
Private Network) to travel from one VPN site to another, special
protocols and procedures must be implemented by the VPN Service
Provider. These protocols and procedures are specified in this
document (BGP-specific encodings and procedures are specified in
the related document draft-ietf-l3vpn-2547bis-mcast-bgp).
Working Group Summary
The L3VPN WG has been working on multicast for many years, with
significant difficulty coming to consensus. This document is put
forth with draft-ietf-l3vpn-2547bis-mcast-bgp. Interoperability and
default deployment modes are a concern because of the large number
of options and features provided in each of these specifications.
These concerns are being addressed by draft-ietf-l3vpn-mvpn-
considerations, which has been submitted for publication.
After much deliberation and consideration in the WG and among
relevant stake holders this is the most feasible path forward.
Document Quality
This document has been extensively reviewed, and has been updated
in responsse to many comments including WG and IETF last call and
IESG comments. Many of the options described in this document are
implemented and widely deployed. The related document draft-ietf-
l3vpn-mvpn-considerations is co-authored by experts from multiple
service providers based largely on deployment experience.
Personnel
Danny McPherson is the Document Shepherd for this document. Ross
Callon is is the Responsible Area Director.