Alcatel-Lucent 6850-48 Reference Guide

OmniSwitch CLI Reference Guide

page 29-1

Ethernet in the First Mile (EFM), also known as LINK OAM, is a collection of protocols specified in 
IEEE 802.3ah, defining Ethernet in the access networks that connects subscribers to their immediate 
service provider. EFM, EFM-OAM and LINKOAM refers to IEEE 802.3ah standard.

LINK OAM (operation, administration, and maintenance) is a tool which monitors Layer-2 link status on 
the network by sending OAM protocol data units (OAMPDUs) between the network devices. OAMPDUs 
contain control and status information used to monitor, test and troubleshoot OAM-enabled links. By 
enabling LINK OAM on switch ports, network administators can monitor the link-related issues on the 
first mile. LINK OAM provides network administrators the ability to monitor link performance, remote 
fault detection and remote loopback control.   

Note. EFM (LINK OAM) does not include functions such as station management, bandwidth allocation or 
provisioning functions.

MIB information for the EFM (LINK OAM) commands is as

Filename: alcatel-ind1-dot3-oam-mib.mib 
Module: ALCATEL-IND1-DOT3-OAM-MIB

Filename: dot3-oam-mib.mib 
Module: DOT3-OAM-MIB

  

 

A summary of the available commands is listed here:

efm-oam
efm-oam multiple-pdu-count
efm-oam errored-frame-seconds-summary
efm-oam errored-frame-period

efm-oam port status
efm-oam port mode
efm-oam port propagate-events

 

efm-oam errored-frame
efm-oam errored-frame-period
efm-oam errored-frame-seconds-summary