Configuring Ethernet Oam Link Monitoring - Cisco Catalyst 4500 Series Software Configuration Manual

Enabling and Configuring Ethernet OAM
Command
Step 3
Switch(config-if)# ethernet oam
remote-loopback {supported | timeout seconds}
Step 4
Switch(config-if)# ethernet oam
remote-loopback {start | stop} {interface
interface-id}
Step 5
Switch(config-if)# end
Step 6
Switch# show ethernet oam status [interface
]
interface-id
Step 7
Switch# copy running-config startup-config
Use the no ethernet oam remote-loopback {supported | timeout} interface configuration command to
disable remote loopback support or remove the timeout setting.
This example shows how to enable OAM Remote Loopback:
Switch(config)# int gi1/3
Switch(config-if)# ethernet oam
Switch(config-if)# ethernet oam remote-loopback supported
Switch(config-if)# end
Switch# show running int gi1/1
Building configuration...
Current configuration : 209 bytes
!
interface GigabitEthernet1/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,19
switchport mode trunk
ethernet oam remote-loopback supported
ethernet oam
end
Switch# ethernet oam remote-loopback start int gi1/1
it is a intrusive loopback.
Therefore, while you test Ethernet OAM MAC connectivity,
you will be unable to pass traffic across that link.
Proceed with Remote Loopback? [confirm]
Switch# ethernet oam remote-loopback stop int gi1/1
Switch#
*Apr
loopback mode.

Configuring Ethernet OAM Link Monitoring

You can configure high and low thresholds for link-monitoring features. If no high threshold is
configured, the default is none; no high threshold is set. If you do not set a low threshold, the default is
a value lower than the high threshold.
Link event PDUs for rxcrc and trxcrc errors are not generated because they are nonstandard.
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
75-38
9 12:52:39.793: %ETHERNET_OAM-6-LOOPBACK: Interface Gi1/1 has exited the master
Chapter 75
Purpose
Enables Ethernet remote loopback on the interface or set a
loopback timeout period.
• Enter supported to enable remote loopback.
• Enter timeout seconds to set a remote loopback
timeout period. The range is from 1 to 10 seconds.
Turns on or turn off Ethernet OAM remote loopback on an
interface.
Returns to privileged EXEC mode.
Verifies the configuration.
(Optional) Saves your entries in the configuration file.
Configuring Ethernet OAM and CFM