We present the Caching-Enhanced Scalable Reliable Multicast (CESRM) protocol. CESRM augments the Scalable Reliable Multicast (SRM) protocol [4,5] 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