Ethernet in the First Mile Configuration

OcNOS-SP : Carrier Ethernet Guide : Carrier Ethernet Configuration Guide : Ethernet in the First Mile Configuration

This chapter contains a complete sample Ethernet 802.3ah (EFM) configuration.

EFM stands for Ethernet in the First Mile and it is an Ethernet link-layer OAM, which works over direct/with ethernet repeaters point-to-point ethernet links. OAM PDUs (Protocol Data Units) uses slow protocol destination MAC address 0180.c200.0002. These frames are single-hop and can not be forwarded beyond a single hop. The transmission rate is limited to a maximum of 10 frames per second to avoid impact on normal operations. Following are the OAM features supported by EFM.

• Discovery

• Link Monitoring

• Remote Fault Detection

• Remote Loopback

Note: Ethernet OAM is a layer 2 interface feature. So switchport configuration on interface is required. Configure the OAM Mode as Active or Passive. Both switch can be configured Active-Active or Active-Passive. But Passive-Passive on both switch won't work.

Note: Remote-loopback & link monitor supported is configured by default when ethernet oam is enabled.

Note: shut/no-shut should be performed to bring up the interface which becomes down after dying-gasp event.

Last modified date: 07/11/2023