Patent ID: 7965938

Claim:
A method for implementing mesh optical network service restoration, comprising: a) reserving channel resources for a restoration path on the link or links through which the restoration path passes and assigning discriminators for individual channels, and determining associated signaling channels for transporting the discriminators; b) activating the restoration path of a working path according to a discriminator whose value corresponds to a restoration, transported by the associated signaling channel, when detecting that the working path fails, wherein the restoration path is activated according to the following steps of: 1) searching a next network element of the restoration path by an ingress network element of the restoration path, transmitting a discriminator whose value corresponds to a restoration to the next network element through the associated signaling channel, and then establishing a cross connection; 2) searching a still next network element according to the value of the discriminator corresponding to a restoration if the next network element is an intermediate network element, transmitting the discriminator whose value corresponds to a restoration to the still next network element, and then establishing a cross connection, until an egress network element of the restoration path receives the discriminator whose value corresponds to a restoration, and going to step 3), or going to step 3) directly if the next network element is the egress network element; 3) establishing a cross connection by the egress network element; and 4) transmitting information confirming the restoration path is accomplished, in a direction opposite to the restoration path, by the egress network element, the information referring to the value of a discriminator corresponding to a restoration.