Edge-Core ES4624-SFP Basic Management Manual page 208

controlled after enabling control operation on the port. If the overtime is configured, the
ports will recovery normal state when the overtime is time-out. If the control method is
block, the corresponding relationship between instance and vlan id should be set
manually by users, it should be noticed when be used.
Example：Enable the function of loopback detection control under port1/2 mode.
Switch(config)#interface ethernet 1/2
Switch(Config-If-Ethernet1/2)#loopback-detection control shutdown
Switch(Config-If-Ethernet1/2)#no loopback-detection control
5.2.2.2 loopback-detection specified-vlan
Command：loopback-detection specified-vlan <vlan-list>
no loopback-detection specified-vlan [<vlan-list>]
Function：Enable the function of loopback detection on the port and specify the VLAN to
be checked; the no operation of this command will disable the function of detecting
loopbacks through this port or the specified VLAN.
Parameters：<vlan-list> the list of VLANs allowed passing through the port. Given the
situation of a trunk port, the specified vlans can be checked. So this command is used to
set the vlan list to be checked.
Default：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.
Example：Enable the function of loopback detection under port 1/2 mode.
Switch(config)#interface ethernet 1/2
Switch(Config-If-Ethernet1/2)#switchport mode trunk
Switch(Config-If-Ethernet1/2)#switchport trunk allowed vlan all
Switch(Config-If-Ethernet1/2)#loopback-detection specified-vlan 1;3;5-20
Switch(Config-If-Ethernet1/2)#no loopback-detection specified-vlan 1;3;5-20
5.2.2.3 loopback-detection interval-time
Command：loopback-detection interval-time <loopback> <no-loopback>
no loopback-detection interval-time
Function：Set/close the loopback detection interval.
Parameters：<loopback > the detection interval if any loopback is found, ranging from 5
to 300, in seconds.
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