Patent ID: 8705346
Filing Date: 2014-04-22
Classification: H04L

Abstract:
1. A method for detection of Ethernet segment protection, this method comprising: configuring a detection point in two segment protection domains with a shared link; configuring a joint monitor group on the shared link of said two segment protection domains; and performing fault detection on a detected segment according to whether the configured detection point and joint monitor group receive a Continuity Check Message (CCM) in a certain period; thereby implementing joint detection of the Ethernet segment protection by configuring the joint monitor group; wherein, said two segment protection domains are a first segment protection domain and a second segment protection domain respectively; said two segment protection domains both comprise: a primary segment, a secondary segment, an alternate primary segment and an alternate secondary segment, and a Domain Endpoint Bridge (DEB) node, and a Primary Interconnecting Bridge (PIB) node and an Alternate Interconnecting Bridge (AIB) node which are configured on the shared link; and said detection point is configured on said DEB node, PIB node and AIB node; wherein, the step of configuring the joint monitor group comprises: configuring three ports of the PIB node on said shared link in two segment protection domains as the joint monitor group, and configuring three ports of the AIB node on said shared link in two segment protection domains as the joint monitor group; wherein, the step of performing fault detection on the detected segment according to whether the configured detection point and joint monitor group receive the CCM message in the certain period comprises: judging whether the detected segment has a fault according to the following steps via the DEB node: A1, judging whether the DEB node in the first segment protection domain/the second segment protection domain receives the CCM messages sent on the primary segment and the secondary segment from the PIB node in the certain period, if the CCM messages sent on the primary segment and the secondary segment from the PIB node are both received or are both not received, the DEB node not performing a tunnel switching action, but continuing to perform fault detection work via the DEB node; if the CCM message sent on the primary segment/the secondary segment from the PIB node is not received but the CCM message sent on the secondary segment/the primary segment from the PIB node is received, then performing step A2; and A2, said DEB node switching a tunnel on the primary segment/the secondary segment into the secondary segment or the primary segment, and then continuing to perform the fault detection work via the DEB node.