| Feature hierarchy | Feature Name |
|---|---|
| OAM: LFM / | Dying-gasp PDU generation |
| OAM: LFM / | Ethernet loss measurement counter for each class in a multiclass environment |
| OAM: LFM / | Fault detection using continuity check protocol |
| OAM: LFM / | Fault verification and isolation using loopback protocol |
| OAM: LFM / | IEEE 802.1ag OAM Linktrace Protocol |
| OAM: LFM / | Inline link fault management |
| OAM: LFM / | LFM: Link fault management, 802.3ah |
| OAM: LFM / | Remote fault notification for 10-Gigabit Ethernet interfaces |
| OAM: LFM / | Remote loopback feature for VDSL interfaces |