Patent ID: 7646731
Filing Date: 2010-01-12
Classification: H04L

Abstract:
1. A data processing apparatus, comprising: one or more processors; one or more network interfaces that couple the one or more processors to a network; generic routing encapsulation (GRE) logic configured to establish upon request one or more GRE tunnels from the one or more network interfaces; routing protocol logic, coupled to a route database in the apparatus, and configured to operate a network routing protocol and to exchange network route information, wherein the route database comprises routing information specifying where to route received packets; network management logic configured to request the GRE logic to establish a particular GRE tunnel from the apparatus to a particular router in the network, to request the routing protocol logic to synchronize the route database associated with the apparatus for the particular router using the particular GRE tunnel, to determine whether the synchronized route database is missing one or more particular routes, and to generate a notification message when the synchronized route database is missing the one or more particular routes; wherein the apparatus comprises a network management system.