OAM with Layer 2 bridging as a transport mechanism

The following OAM features that use Layer 2 bridging as a transport mechanism are supported:

• IEEE 802.3ah LFM-IEEE 802.3ah link fault management (LFM) operates at the physical interface level and the packets are sent using Layer 2 bridging as a transport mechanism.
• Dying-gasp packets-Dying-gasp PDU generation operates at the physical interface level. Dying-gasp packets are sent through the IEEE 802.3ah LFM-enabled interfaces.
• IEEE 802.1ag and ITU-T Y.1731 protocols on down MEPs-IEEE 802.1ag configuration fault management (CFM) and ITU-T Y.1731 performance-monitoring OAM protocols, which are used for end-to-end Ethernet services, are supported only on down maintenance association end points (MEPs). The ITU-T Y.1731 protocol supports delay measurement on down MEPs but does not support loss measurement on down MEPs.