Patent ID: 9515923
Filing Date: 2016-12-06
CPC Classification: H04L

Claim Text:
1. A method for processing an interconnected ring in multi-protocol label switching, the method comprising: classifying, at a first on-ring node, a first to-be-processed service as a single ring service for an original ring, wherein the first on-ring node and a first off-ring node of the first to-be-processed service are located on the original ring; classifying, at a second on-ring node, a second to-be-processed service as a cross-ring service for an interconnected ring corresponding to the original ring, wherein the second on-ring node of the second to-be-processed service is located on the original ring and a second off-ring node of the second to-be-processed service is not located on the original ring, wherein the interconnected ring is a different ring than the original ring, wherein the interconnected ring and the original ring have a first interconnected node and a second interconnected node that are each comprised in both the original ring and the interconnected ring, wherein the second off-ring node of the second to-be-processed service is not accessible by a ring that is connected to the second on-ring node, and wherein the interconnected ring is not directly connected to the second on-ring node; determining information about a virtual point corresponding to the interconnected ring in response to classifying the second to-be-processed service as a cross-ring service for the interconnected ring; creating a virtual channel of the original ring according to the information about the virtual point; determining, according to reachability determining information, whether a first reachable virtual channel for forwarding the cross-ring service from the second on-ring node through the first interconnected node to the second off-ring node exists, wherein the reachability determining information comprises topology information and fault information of the interconnected ring; in response to the first reachable virtual channel existing: processing the single ring service according to a pre-created actual channel of the original ring.