PRIORITY BASED ANYCAST ROUTING

摘要

A technique for selecting a network node from a plurality of nodes employing anycast addressing based on a priority. The plurality of nodes is configured with an anycast address. At each node, the anycast address is associated with a unique priority value that represents a priority associated with the node. Traffic destined for the anycast address is forwarded to the node whose priority value indicates the highest priority. If the node becomes unavailable, traffic destined for the anycast address is forwarded to a node whose priority value indicates the next highest priority, and so on.

主权项

1. In a data network comprising one or more intermediate nodes and a plurality of destination nodes configured with an anycast address, a method for prioritizing access to a destination node comprising the steps of:
configuring each destination node with a unique priority value associated with the anycast address wherein the priority value represents a priority associated with the destination node; and forwarding a data packet specifying the anycast address as a destination address towards a destination node associated with the highest priority value.