Technical Summary
The Layer Two Tunneling Protocol (L2TP) provides a standard method
for tunneling PPP packets. When IP multicast is used, the
forwarding of multicast data within L2TP sessions may impact the
throughput of L2TP tunnels because the same traffic may be sent
multiple times within the same L2TP tunnel, but in different
sessions. This document describes an extension to L2TP, in order to
have an efficient use of L2TP tunnels within the context of
deploying multicast services whose data will have to be conveyed by
such tunnels.
Working Group Summary
There was support for this in the WG.
Protocol Quality
This document has been reviewed for the IESG by Thomas Narten.