EFM-OAM protocol

The functionality of the EFM-OAM can be summarized under the following categories:

• Discovery: Discovery is the mechanism to detect the presence of an OAM sub-layer on the remote device. During the discovery process, information about OAM entities, capabilities, and configurations are exchanged.
• Remote fault detection: Provides a mechanism for an OAM entity to convey error conditions to its peer by way of a flag in the OAMPDUs.
• Remote loopback: This mechanism is used to troubleshoot networks and to isolate problem segments in a large network by sending test segments.