Any MEP can measure frame-loss. A notification is sent to the management entity with the OID of the MEP that has measured frame-loss exceeded thresholds. To warn the system administrator of the problem, as controlled by the MEP If measured frame-loss exceeds threshold is raised after a notification has been sent, another notification is issued. The management entity receiving the notification can identify the system from the network source address of the notification, and can identify the MEP reporting the frame-loss by the indices in the OID of the each element of trap variable except fsMIY1731ContextName in the notification: fsMIY1731MegIndex - Also the index of the MEP's Maintenance Entity Group table entry (fsMIY1731MegTable). fsMIY1731MeIndex - Also an index (with the MEG table index) of the MEP's Maintenance Entity table entry (fsMIY1731MeTable). fsMIY1731MepIdentifier - MEP Identifier and final index into the MEP table (fsMIY1731MepTable).