catmxVclOamLoopBkStatus 1.3.6.1.4.1.9.9.88.1.2.1.1.12

Indicates OAM loopback status of the VC. disabled(1) -- No OAMs on this VC. sent(2) -- OAM sent, waiting for echo. received(3) -- OAM received from target. failed(4) -- Last OAM did not return.