Patent ID: 8055131

Claim:
A route query method in an automatic switched optical network (ASON) for realizing the route query of a network element (NE) having a protocol controller (PC) and a connection controller (CC) but without a route controller (RC), comprises the steps: (1) when the CC of a NE 1 without a RC needs to query a route, the NE 1 sends a protocol message of Route Request to a remote NE 2 ; (2) when the remote NE 2 obtains route result according to the Route Request, the remote NE 2 returns the route result to the NE 1 who launches the Route Request by sending a protocol message of Route Response; (3) the PC of the NE 1 returns the route result to the CC of the NE 1 after it receives the protocol message of Route Response.