Patent ID: 8488470
Filing Date: 2013-07-16
Classification: H04L

Abstract:
1. A method performed by a first router for requesting routes to be withdrawn from a second router, the method comprising: sending, by the first router one or more routing protocol messages, for identifying to the second router a plurality of particular routes and a particular tag associated with the plurality of particular routes for the second router to associate each route of the plurality of particular routes with the particular tag in a manner that all of the routes in the plurality of particular routes in a routing database can be subsequently identified by the second router based on the particular tag; and sending, by the first router subsequent to said operation of sending of one or more routing protocol messages, a particular routing protocol message associated with a route withdraw operation for identifying to the second router to withdraw from the routing database one or more routes based on a specified tag, with the particular routing protocol message including the particular tag as the specified tag for use by the second router in identifying and withdrawing the plurality of particular routes from the routing database; wherein each of the particular tag and the specified tag is a non-IP address value.