Buffer management for local loss recovery of reliable multicast

In reliable multicast, buffer management is an important issue that affects the loss recovery performance. Existing reliable multicast protocols do not explicitly address this issue and there is also little known work on it. We focus on the buffer management for active reliable multicast (ARM) when multiple simultaneous reliable multicast sessions are supported by some common active routers. Motivated by the fact that active routers in ARM can perform customized computation and provide soft-stage storage, we propose a new buffer management scheme, called adaptive cache pool (ACP), for cache resource partitioning and buffer replacement to achieve good loss recovery performance. The proposed ACP scheme is validated using ns-2 simulations to compare its performance with that of the original ARM scheme.