METHOD OF RELIABLE MULTICAST, SUPERSTRATUM PROVIDER APPARATUS AND SYSTEM

摘要

A method of reliable multicast, a superstratum provider edge and a system are provided. The method comprises: establishing independent multicast path between the each SPE and the at least one UPE according to a multicast snooping protocol; setting in main-state or standby-state for all the SPE established multicast path with the same UPE and determining whether the main SPE works normally or not; transferring the multicast data to the UPE if normally; or transferring the multicast data to the UPE through the multicast path established between the standby SPE and the UPE if abnormally. Thereby the problem that the multicast path between the SPE and the UPE in the HVPLS lacks protecting could be solved.