CFM provides capabilities to detect, verify, and isolate connectivity failures.
Note
When configuring 802.1ag over VPLS, if the VPLS endpoint is deleted from the configuration, the MEP configuration is deleted under CFM without warning.In the following figure, CFM is applied over a VPLS network; ports 1/2 and 1/3 are customer facing networks; and port 1/1 is an uplink to a VPLS cloud.
