Implementing Overlay Multicast with SCTP

Previously, we studied the performance of transport layer multihoming (e.g., STCP). Using the emulated application of the bulk data transfer, we investigate existing overlay multicast schemes and find that all of them have a inherit performance limitation caused by tansport layer singlehoming (e.g., TCP). Based on this, we design a new overlay multicast architucture named the Hierarchy Overlay Multicast Network based on SCTP (HOMN-SCTP) and present the relevant scheme named Bandwidth-Satisfied Overlay Multicast (BSOM) to reduce the limitation of existing overlay multicast scheme with tansport layer singlehoming and to further improve the performance of overlay multicast. We also show application performance in terms of QoS-satisfied ratio, multicast tree total cost, average link stress and average path length using the HOMN-SCTP and BSOM is better than performance when applications operate using singlehoming as originally designed.