Synchronization after restart of a FC switch

摘要

Examples of the present disclosure provide a method and an apparatus for synchronization after restart of a FC switch. For example, when a FC switch which is restarted detects that a neighbor FC switch has already established an adjacency relationship with the restarted FC switch, the adjacency relationship between the restarted FC switch and the neighbor FC switch is maintained, and the neighbor FC switch is requested to perform LSR initial synchronization to the restarted FC switch under a circumstance that the adjacency relationship is kept.

主权项

1. A method for synchronization after restart of a Fiber Channel (FC) switch, wherein the method is applied at a first FC switch which is restarted; the method comprising:
when the first FC switch is restarted and a first packet for keeping alive an adjacency relationship is received from a second FC switch within a predetermined waiting period, the first FC Switch determining that the second FC switch which sends the first packet has already established the adjacency relationship with the first FC switch before the restart of the first FC switch; the first FC switch responding to the second FC switch with a second packet for keeping alive the adjacency relationship; under a circumstance that the adjacency relationship is kept, the first FC switch sending to the second FC switch a Link State Update (LSU) packet in which an initial synchronization flag requesting state non-change is carried to request the second FC switch to keep the adjacency relationship with the first FC switch and to perform Link State Record (LSR) initial synchronization; when a Link State Acknowledgement (LSA) packet in response to the LSU packet sent by the first FC switch and carrying the initial synchronization flag requesting state non-change is received from the second FC switch, the first FC switch synchronizing all of LSRs carried in at least one LSU packet for LSR synchronization received from the second FC switch to the first FC switch; and the first FC switch triggering routing calculation after the LSR initial synchronization is completed.