The PIM architecture for wide-area multicast routing
IEEE/ACM Transactions on Networking (TON)
The MASC/BGMP architecture for inter-domain multicast routing
Proceedings of the ACM SIGCOMM '98 conference on Applications, technologies, architectures, and protocols for computer communication
QoSMIC: quality of service sensitive multicast Internet protocol
Proceedings of the ACM SIGCOMM '98 conference on Applications, technologies, architectures, and protocols for computer communication
The evolution of multicast: from the MBone to interdomain multicast to Internet2 deployment
IEEE Network: The Magazine of Global Internetworking
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QoS support poses new challenges to multicast routing especially for inter-domain multicast where network QoS characteristics will not be readily available as in intra-domain multicast. Several existing proposals attempt to build QoS-sensitive multicast trees by providing multiple joining paths for a new member using a flooding-based search strategy which has the draw-back of excessive overhead and may not be able to determine which join path is QoS feasible sometimes. In this paper, first we propose a method to propagate QoS information in bidirectional multicast trees to enable better QoS-aware path selection decisions. We then propose an alternative "join point" search strategy that would introduce much less control overhead utilizing the root-based feature of the MASC/BGMP inter-domain multicast architecture. Simulation results show that this strategy is as effective as flooding-based search strategy in finding alternative join points for a new member but with much less overhead.We also discuss extensions to BGMP to incorporate our strategies to enable QoS support.