Patent ID: 7782858
Filing Date: 2010-08-24
Classification: H04L

Abstract:
1. A method comprising: receiving, at a particular node, authenticated site data that can be trusted and that includes; identifying a route between the nodes; designating a trust level for the route based on the authenticated site data; discounting an external routing protocol message after comparing it to the authenticated site data; receiving from a local site connected to the particular node an internal routing protocol message that includes data that indicates a change in a network address reachable at the local site; generating an outbound external routing protocol message that includes data that indicates the change in the address reachable, and data that indicates a local site ID that is associated with the local site, wherein the generating further comprises determining whether the internal routing protocol message includes data that indicates a local source site ID that is different from the local site ID, and wherein if it is determined that the internal routing protocol message includes data that indicates a local source site ID that is different from the local site ID, then generating the outbound external routing protocol message that includes data that indicates the local source site ID; and sending the outbound external routing protocol message over the second network.