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Managing Physical Interfaces
Step 10
Step 11
Step 12
The following example shows how to enable loopback detection globally (keep the default
parameters):
Switch#configure
Switch(config)#loopback-detection
Switch(config)#show loopback-detection global
Loopback detection global status : enable
Loopback detection interval : 30s
Loopback detection recovery time : 3 intervals
Switch(config-if)#end
Switch#copy running-config startup-config
The following example shows how to enable loopback detection of port 1/0/3 and set the
process mode as alert and recovery mode as auto:
Switch#configure
Switch(config)#interface gigabitEthernet 1/0/3
Switch(config-if)#loopback-detection
Switch(config-if)#loopback-detection config process-mode alert recovery-mode auto
Switch(config-if)#show loopback-detection interface gigabitEthernet 1/0/3
Port
Enable
----
------
Gi1/0/3
enable
Switch(config-if)#end
Switch#copy running-config startup-config
show loopback-detection interface { fastEthernet port | gigabitEthernet port | ten-
gigabitEthernet port | port-channel port-channel }
Verify the Loopback Detection configuration of the specified port.
end
Return to privileged EXEC mode.
copy running-config startup-config
Save the settings in the configuration file.
Process Mode
------------
alert
Recovery Mode
Loopback
-------------
--------
auto
N/A
Loopback Detection Configuration
Block
LAG
-----
----
N/A
N/A
Configuration Guide
105
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