System and method to route data in an anycast environment

Details System and method to route data in an anycast environment System and method to route data in an anycast environment

2011-04-12

2011-04-12

Ryman, Daniel J (Department: 2466)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S392000

Reexamination Certificate

active

07924830

ABSTRACT:
A method of routing data in an anycast environment includes sending an instruction from an intelligent route reflector device to an anycast router associated with an anycast network. The instruction signals the anycast router to statically pin up to an initial service node corresponding to a network service. The initial service node is associated with an anycast address. The method includes identifying prefixes of Internet protocol (IP) addresses of customer endpoints that communicate with the anycast network via the anycast router, and sending a route advertisement to a service node router associated with the initial service node. The route advertisement instructs the service node router to send an advertisement to the anycast network announcing that the service node router is a next best hop for data traffic related to the network service and bound for a customer endpoint having an IP address that includes any of the identified prefixes.

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