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Recent applications such as broadcast TV distribution over an IP network require that stringent QoS constraints, such as low latency and loss be met. Streaming content in IPTV is typically delivered to distribution points on an IP backbone using IP multicast, in particular Protocol Independent Multicast (PIM). Local restoration from link failures using MPLS or layer-2 Fast Reroute (FRR) is a proven...
Meeting IPTV's quality of service constraints (such as low latency and loss) requires designing the right combination of underlying IP-transport, restoration, and video and packet recovery methods. Carriers use link-based fast reroute (FRR) as the primary transport restoration method to achieve this goal. Although we can carefully tune the link weights in the IP routing protocol to avoid traffic overlap...
We describe a prototype tool that analyzes combined aspects of reliability and performance for a variety of networks. Our network-wide analysis systematically generates failure scenarios (called network states), maps their effects from the physical to the network to the traffic layer, calculates the probability of each state, and evaluates a metric on it, until the expected value of the metric or...
We compare the performance of three different schemes for selecting restoration paths in a typical inter-city backbone network under 500,000 single and multiple failure scenarios.
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