Adjustment of working channels of WLAN radios

Manually adjust working channels of WLAN radios.
[HUAWEI] wlan
[HUAWEI-wlan-view] ap 0 radio 0 or radio-profile name r1
[HUAWEI-wlan-radio-0/0] channel-mode fixed
[HUAWEI-wlan-radio-0/0] channel 20mhz 6
Restore to the default channel by running the channel 20mhz 1 command.
20mhz indicates that the channel bandwidth is 20 MHz, which can be set to 40 MHz, 80 MHz, or 160 MHz.

Web platform:
- Choose Configuration > WLAN Configuration/AP Management > Radio Profile, and change Channel mode to fixed.
- On the WLAN Configuration page, select 2.4 GHz or 5 GHz in the radio configuration area. Select the radio profile, channel bandwidth, channel, and power level in fixed mode. (To modify information, delete the existing configurations first. Then add a new radio profile and configure the parameters as required.)
To check the working channel, run the display actual channel-power command.
The following non-overlapping channels are available in mainland China:
-2.4 GHz: 1, 6, 11
-5 GHz: 36, 40, 44, 48, 52, 56, 60, 64, 149, 153, 157, 161, 165
1. If the channel mode is changed from auto to fixed, APs will run in a fixed channel.
2. After automatic calibration is complete, the calibrated channel will be recorded after you disable the automatic calibration function and change the channel mode to fixed. This is applicable to scenarios with multiple APs.
3. To enable automatic calibration, ensure that the channel mode is auto. Otherwise, change the channel mode to auto first.
4. For Fit APs, the configurations take effect only after being delivered.
5. HT40 is not recommended in 2.4 GHz.

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