Major functions of Ethernet OAM
Ethernet OAM provides the following functions:
Link performance monitoring—Monitors the performance indices of a link, including packet loss, delay, and jitter, and collects traffic statistics of various types.
Fault detection and alarm—Checks the connectivity of a link by sending OAM protocol data units (OAMPDUs) and reports to the network administrators when a link error occurs.
Remote loopback—Checks link quality and locates link errors by looping back OAMPDUs.