Patent ID: 8279754
Filing Date: 2012-10-02
Classification: H04L

Abstract:
1. A method comprising: executing an interior gateway protocol (IGP) within a first network device of a first network to receive from one or more other network devices of the first network a routing communication that includes constraint information for a plurality of peering links and data designating an interface associated with at least one of the peering links as a passive interface for which bandwidth reservations with a resource reservation protocol are unsupported, wherein the peering links are external to the first network and couple respective exit points of the first network to a second network; and computing a path within the first network to one of the exit points, wherein the path is computed such that the path conforms to a specified constraint and such that the peering link coupled to the one of the exit points is a peering link for which the received constraint information conforms to the specified constraint.