Show Loopback-Detection - Planet SGS-6341 Series Command Manual

Disable the function of detecting the loopbacks through the port.
Command Mode:
Port Mode.
Usage Guide:
If a port can be a TRUNK port of multiple Vlans, the detection of loopbacks can be implemented on the basis of
port+Vlan, which means the objects of the detection can be the specified Vlans on a port. If the port is an ACCESS
port, only one Vlan on the port is allowed to be checked despite the fact that multiple Vlans can be configured. This
function is not supported under Port-channel.
Examples:
Enable the function of loopback detection under port 1/0/2 mode.
Switch(config)#interface ethernet 1/0/2
Switch(Config-If-Ethernet1/0/2)#switchport mode trunk
Switch(Config-If-Ethernet1/0/2)#switchport trunk allowed vlan all
Switch(Config-If-Ethernet1/0/2)#loopback-detection specified-vlan 1;3;5-20
Switch(Config-If-Ethernet1/0/2)#no loopback-detection specified-vlan 1;3;5-20

6.6 show loopback-detection

Command:
show loopback-detection [interface <interface-list>]
Function:
Display the state of loopback detection on all ports if no parameter is provided, or the state and result of the specified
ports according to the parameters.
Parameters:
<interface-list> the list of ports to be displayed, for example: ethernet 1/0/1.
Command Mode:
Admin and Configuration Mode.
Usage Guide:
Display the state and result of loopback detection on ports with this command.
Example:
Display the state of loopback detection on port 4.
Switch(config)#show loopback-detection interface Ethernet 1/0/4
loopback detection config and state information in the switch!
PortName
Ethernet1/0/4
Loopback Detection
Enable
Control Mode
Shutdown
6-147
SGS-6341 Series Command Guide
Is Controlled
No