3Com Switch 7750 Series
Command Reference Guide – VLAN Commands Chapter 1 VLAN Configuration Commands
1-7
1.1.7 shutdown Syntax
shutdown
undo shutdown
View
VLAN interface view
Parameter
None
Description
Use the shutdown command to disable a VLAN interface.
Use the undo shutdown command to enable a VLAN interface.
By default, a VLAN interface is enabled. In this scenario, the VLAN interface’s status is
determined by the status of its ports, that is, if all the ports of the VLAN interface are
down, the VLAN interface is down (disabled); if one or more ports of the VLAN interface
are up, the VLAN interface is up (enabled).
If a VLAN interface is disabled, its status is not determined by the status of its ports.
You can use the undo shutdown command to enable a VLAN interface when its
related parameters and protocols are configured. When a VLAN interface fails, you can
use the shutdown command to disable the interface, and then use the undo
shutdown command to enable this interface again, which may restore the interface.
The operation of enabling/disabling a VLAN interface does not influence all the
Ethernet ports belonging to this VLAN.
Example
# Disable Vlan-interface2 and then enable it.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] interface Vlan-interface 2
[3Com-Vlan-interface2] shutdown
[3Com-Vlan-interface2] undo shutdown
1.1.8 vlan Syntax
vlan vlan-id
undo vlan { vlan-id [ to vlan-id ] | all }