Abstract: The multi-granularity labels has been defined by Internet engineering task force (IETF), but the corresponding signaling process has not been standardized up to now. A new generized multi-protocol label switching based signaling mechanism, which could be used for multi-granularity optical networks to create, release and modify its optical paths under the service-driven model, was proposed. With the help of communication finite state machine (CFSM) to analyze the signaling mechanism,we conclude that the signaling mechanism proposed could be satisfied in the dynamic requirement of different granularity optical paths.

Key words: generized multi-protocol label switching, multi-granularity switching, label switching path, communication finite state machine