Patent ID: 9705818
Date: 2017-07-11
CPC Classifications: H04J,H04L,H04Q

Claim:
1. A method for assigning a tributary port number, the method comprising: receiving, from a neighboring node, a service path request message including a service type for establishing a service path used to bear a Lower Order Optical Channel Data Unit (ODU) service of the service type; determining, according to the service path request message, an optical channel transport unit (OTU) link used to bear the Lower Order ODU service; determining, according to the service type in the service path request message, a free tributary slot resource used to bear the Lower Order ODU service in the OTU link; assigning a tributary port number to the free tributary slot resource, wherein assigning the tributary port number to the free tributary slot resource comprises: sending a service path acknowledgment message to the neighboring node, wherein the service path acknowledgment message carries information about the free tributary slot resource and the tributary port number.