| Publisher | Lucent Technologies | ||
|---|---|---|---|
| Format | 240.2KB PDF, requires Acrobat Rdr 5 | Date added | 26 Nov 2002 |
| Topics | Quality of Service, Switching | ||
| Downloads | 3 | ||
There is a growing interest among service providers to offer new services with Quality of Service (QoS) guaranties that are also resilient to failures. Supporting QoS connections requires the existence of a routing mechanism, that computes the QoS paths, i.e., paths that satisfy QoS constraints (e.g., delay or bandwidth). Resilience to failures, on the other hand, is achieved by providing, for each primary QoS path, a set of alternative QoS paths used upon a failure of either a link or a node. The above objectives, coupled with the need to minimize the global use of network resources, imply that the cost of both the primary path and the restoration topology should be a major consideration of the routing process.
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