Scaling IP multicast on datacenter topologies
Xiaozhou Li, Michael J. Freedman · 2013
IP multicast would reduce significantly both network and server overhead for many datacenter applications' communication. Unfortunately, traditional protocols for managing IP multicast, designed for arbitrary network topologies, do not scale with aggregate hardware resources in the number of supported multicast groups. Prior attempts to scale multicast in general settings are all bottlenecked by the forwarding table capacity of a single switch.