Abstract
This paper provides an overview of p-cycle based optical multicast protection approaches for link failure recovery, combined node and link failure recovery, and source failure recovery on top of combined node and link failure recovery. We discuss several recently proposed p-cycle based optical multicast protection approaches, including the link-protecting p-cycle based optical multicast protection approach, the tree-protecting p-cycle based optical multicast protection approach, node-and-link protecting p-cycle based optical multicast protection approach, and flow p-cycle based optical multicast protection approach. They outperform other existing optical multicast protection approaches in both capacity efficiency and recovery speed.
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