Towards a robust and controllable intra-domain multicast protocol

Abstract

CBT and PIM-SM are two typical intra-domain multicast routing protocols. However, CBT lacks an efficient member management mechanism such as admission control and authentication for senders. In PIM-SM, multicast traffic concentrates on RP which causes network collapse. Frequently the authorization operation tends to overload RP. Furthermore, PIM-SM is single-failure, which means RP failure will destroy the whole multicast tree. We propose a new protocol that can effectively solve all these problems by admitting senders at multiple cores and transporting packets towards uni-direction.