How to enable or disable interfaces of a WLAN device

If parameters of an interface are modified but the new configuration does not take effect immediately, you can use the shutdown command to shut down the interface and then use the undo shutdown command to start it (running the shutdown and undo shutdown commands is equivalent to running the restart command). The modified parameters will then take effect.
Perform the following steps to disable an interface of a WLAN device:
1. Run the system-view command to enter the system view.
2. Run the interface interface-type interface-number command in the system view to enter the specified interface view.
3. Run the shutdown command in the interface view to disable the interface.
By default, an interface is enabled.
Note:
- Data frames may be lost or services may be interrupted if you disable an interface during data transmission. Exercise caution when you use the shutdown command.
- If you run the shutdown command in the Eth-Trunk interface view, all the member interfaces of the Eth-Trunk are disabled.
- A null interface is always Up and cannot be enabled or disabled through commands.
- A loopback interface is always Up and cannot be enabled or disabled through commands.
Perform the following steps to enable an interface of a WLAN device:
1. Run the system-view command to enter the system view.
2. Run the interface interface-type interface-number command in the system view to enter the specified interface view.
3. Run the undo shutdown command in the interface view to enable the interface.
By default, an interface is enabled.

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