Alcatel-Lucent 6850-48 Guida Di Rete

Configuring EFM (LINK OAM)

Configuring LINK OAM

OmniSwitch AOS Release 6 Network Configuration Guide

page 16-9

This section describes how to use Alcatel-Lucent’s Command Line Interface (CLI) commands to config-
ure LINK OAM on a switch.

 should be used to enable LINK OAM globally. By default, LINK OAM is disabled on the 

switch. The 

 command can be used to enable or disable the LINK OAM on a specific 

port or a range of ports on a switch. When enabled, the port can be set to receive, transmit, or both trans-
mit and receive OAMPDUs.

To enable LINK OAM globally on a range of ports, use the efm-oam command, as shown:

-> efm-oam port 2/1-10 status enable

To disable LINK OAM globally on a range of ports, use the disable form of the command, as shown:

-> efm-oam port 2/1-10 status disable

To enable LINK OAM mode to active, use the port mode command, as shown:

-> efm-oam port 2/1-10 mode active

By default, LINK OAM port mode is active on all the ports.

LINK OAM requires that frames be exchanged with a minimum frequency to maintain the relationship
( keep-alive). If no OAMPDUs are received in a specific time interval window, the OAM peering relation-
ship is lost and must be restored to perform OAM functions. 

 command to configure the keepalive time interval. 

-> efm-oam port 2/1-10 keepalive-interval 10

To configure the time interval by which the information OAMPDUs should be transmitted out of an LINK 
OAM enabled port, use the 

 command. 

-> efm-oam port 2/1-10 hello-interval 10

Note. By default, the keep-alive interval value is 5 seconds and the hello-interval value is set to 1 second.

In a network where traffic is interrupted due to device failures or unavailability, the flag field defined in 
OAMPDUs allows a LINK OAM enabled node to send severe error conditions to its peer. See 

 for more information on error conditions.

The ports can be enabled to report severe error conditions like critical events and dying gasp events by 
using the 

-> efm-oam port 2/1-10 propagate-events critical-event enable