Patent ID: 8824275
Filing Date: 2014-09-02
Classification: H04L

Abstract:
1. A device for continuing to forward after switching occurs from a primary main control board to a standby main control board, wherein said device is located in a Fiber Channel (FC) switch which supports Fabric Shortest Path First (FSPF) protocol and comprises the primary main control board, an interface board and the standby main control board, and said device is disposed in the standby main control board of said FC switch and comprises: a Link State Records (LSRs) backup module to receive neighbor LSRs sent by the primary main control board and back up the neighbor LSRs on the standby main control board; a promotion control module to trigger the standby main control board to be promoted to the primary main control board; a neighbor recovering module to establish an adjacency relationship with neighbors according to the neighbor LSRs backed up on the standby main control board, after the standby main control board is promoted to the primary main control board; a LSRs generation module to generate LSRs of the switch based on available ports on the switch and the neighbors with which the adjacency relationship has been established; a neighbor maintaining module to start to send a message for maintaining the adjacency relationship to the neighbors with which the adjacency relationship has been established; and a routing calculating module to calculate a routing based on the neighbor LSRs and the LSRs of the switch.