Caching-enhanced scalable reliable multicast

We present the caching-enhanced scalable reliable multicast (CESRM) protocol. CESRM augments the scalable reliable multicast (SRM) protocol (S. Floyd et al., 1995 and 1997) with a caching-based expedited recovery scheme. CESRM exploits the packet loss locality occurring in IP multicast transmissions in order to expeditiously recover from losses in the manner in which recent losses were recovered. Trace-driven simulations show that CESRM reduces the average recovery latency of SRM by roughly 50% and, moreover, drastically reduces the overhead in terms of recovery traffic and control messages.