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EFFICIENT PROTECTION MECHANISMS FOR PROTECTING MULTICAST TRAFFIC IN A RING TOPOLOGY NETWORK UTILIZING LABEL SWITCHING PROTOCOLS
EFFICIENT PROTECTION MECHANISMS FOR PROTECTING MULTICAST TRAFFIC IN A RING TOPOLOGY NETWORK UTILIZING LABEL SWITCHING PROTOCOLS
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机译：利用标签交换协议在环形拓扑网络中保护多播流量的有效保护机制
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摘要
Efficient protection mechanisms for ring-based label-switching networks, such as multi-protocol label switching (MPLS) networks. The protection mechanisms are designed to protect poinl-to-multipoint label switching paths (LSPs). In steering ring protection embodiments, the nodes (310-A, 310-B. 310-C, 310-D, 310-E, 310-F) of the ring network (300) are provided with pre-configured tables that enable each node to operate in both working mode and protection mode. The information required for each node to switch between the two modes in included in its respective table during the pre-configuration of the ring network. In wrapping ring protection embodiments, the wrapping is performed by assigning a unique LSP label to each LSP and further configuring each intermediate node in the ring network to transparently pass data packets including the unique LSP label. Upon detecting a failure in a network node, the data packets including the unique LSP label are switched to a protection ring (320).
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