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The preconfigured protection cycle (p -cycle) approaches have been well studied for unicast traffic protection, but have been rarely applied to multicast traffic protection. In this paper, we first examine two integer linear programming (ILP) based heuristic algorithms, including spare capacity optimization of p -cycle-based tree protection (SOPT) and segment protection (SOPS), We also extend spare...
Network service outage causes tremendous revenue loss and service disruption for both unicast and multicast traffic. In particular, multicast traffic suffers more in network failures than unicast traffic does, because a link in a multicast tree might carry traffic to multiple destinations. Hence, network survivability is crucial to provisioning of multicast sessions in optical WDM networks. The preconfigured...
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