Achieving Shared Protection for Dynamic Multicast Sessions in Survivable Mesh WDM Networks

— The advances in wavelength-division multiplexing (WDM) technology are expected to facilitate bandwidth-intensive multicast applications. A single fiber failure in such a network, however, can disrupt the information dissemination to several destination nodes in a “light-tree”-based multicast session. Thus it is imperative to protect the multicast sessions. In this paper, we propose a novel protection scheme, called multicast protection through spanning paths (MPSP), for resource efficient multicast protection with spare capacity sharing. Here, a spanning path is a path from a leaf node to any other leaf node of a multicast tree. The key idea of MPSP is first to identify a backup path for each spanning path and then to appropriately select parts of these backup paths to protect the primary multicast tree, so that the total bandwidth allocated to the primary multicast tree and its protection paths (or trees, etc.) is minimized. While previous studies only consider self-sharing...

• Type: Journal
• Year: 2007
• Where: JSAC
• Authors: Hongbin Luo, Lemin Li, Hongfang Yu, Sheng Wang
• Keywords: JSAC 2007, Multicast, Multicast Session, Multicast Tree