Patent ID: 9054956
Filing Date: 2015-06-09
Classification: H04L

Abstract:
1. For use in a router having a designated routing facility and a standby routing facility, a method for processing information related to routing, the method comprising: a) executing, with the designated routing facility, a routing protocol to generate network topology information; b) providing a copy of network state information received by the designated routing facility to the standby routing facility; c) executing, with the standby routing facility, the routing protocol based on the network information provided by the designated routing facility, to generate, by the standby routing facility, signaling to disseminate routing information to external nodes, wherein the generated signaling is (A) suppressed by the router, responsive to a determination by the standby routing facility that it is in a standby state, so that the generated signaling is not transmitted to the external nodes, or (B) transmitted to and rejected by the external nodes responsive to a determination by the external node that the signaling was from a routing engine in a standby state; and d) responsive to a determination of a failure of the designated routing facility, electing, with the router, the standby routing facility as a new designated routing facility, wherein the act of electing includes having the designated routing facility and the standby routing facility use shared identification information such that the standby routing facility assumes the identification information of the failed designated routing facility.