Scalable Reliable Multicast (SRM)
All members get all the data that has been sent to the the multicast group (minimalist reliability )
Repair requests and responses (retransmissions) are multicast.
Scope of repair requests and responses can be TTL limited or a separate “local recovery group” can be formed
Techniques to avoid implosion of repair requests, and reduce control traffic
An example of an “application level framing” paradigm {like RTP}