A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : L3VPN Virtual Network Overlay Multicast
Author(s) : Dhananjaya Rao
Vipin Jain
Filename : draft-drao-l3vpn-virtual-network-overlay-multicast-00.txt
Pages : 9
Date : 2013-07-15
Abstract:
Virtual network overlays are extremely useful for supporting
multicast applications in multi-tenant data center networks, by
distributing the per-tenant multicast state and forwarding actions at
the network edges with minimal control plane load and simpler
forwarding in the core. A virtual overlay network may use existing
encapsulations such as MPLS-in-GRE or newer IP based encapsulations
such as VXLAN and NVGRE.
IP multicast sources and receivers are very commonly spread out
across multiple subnets. Sources and receivers may also be spread
within and outside a single network domain such as a data center.
Hence, a Layer-3 multicast paradigm is the most suitable and
efficient approach for delivery of IP multicast traffic.
BGP based MVPNs provide a good basis for providing a solution to
support IP multicast across these overlay networks. An appropriate
subset of the MVPN control plane and procedures are sufficient to
support the requirements, providing for a simpler model of operation.
This document describes the use of BGP based MVPNs alongwith the new
IP-based virtual network overlay encapsulations to provide a Layer-3
virtualization solution for IP multicast traffic, and specifies
mechanisms to use the new encapsulations while continuing to leverage
the BGP MVPN control plane techniques and extensions.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-drao-l3vpn-virtual-network-overlay-multicast
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-drao-l3vpn-virtual-network-overlay-multicast-00
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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