frequency

Function

(AP group radio view) The frequency command sets the working frequency of radios for all APs in an AP group.

(AP group radio view) The undo frequency command restores the default working frequency of radios for all APs in an AP group.

(AP radio view) The frequency command sets the working frequency of radios for an AP.

(AP radio view) The undo frequency command restores the working frequency of the radio on an AP to the working frequency configured in the AP group radio view.

By default, radio 0 works on the 2.4 GHz frequency band, and radio 2 works on the 5 GHz frequency band.

Format

frequency { 2.4g | 5g }

undo frequency

Parameters

Parameter	Description	Value
2.4g	Specifies 2.4 GHz frequency band.	-
5g	Specifies 5 GHz frequency band.	-

Views

AP radio view, AP group radio view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

On APs supporting radio switching between the 2.4 GHz and 5 GHz frequency bands, some radios support both the two bands. However, such radios can work on one band at a time. You can configure the working frequency band of the AP based on the frequency band of STAs.

Precautions

When working in dual-5G mode, some APs support only low-band channels (36 to 64) or high-band channels (100 to 165) on the 5 GHz band.

AP4030TN: Radio 0, radio 1, and radio 2 on all bands
AP8130DN: Radio 0 and radio 1 on all bands
AP8150DN: Radio 0 and radio 1 on all bands
AP6052DN: Radio 0 on low bands and radio 1 on high bands
AP7052DN: Radio 0 on low bands and radio 1 on high bands
AP7152DN: Radio 0 on low bands and radio 1 on high bands
AP8182DN: Radio 0 on low bands and radio 1 on high bands
AP4051TN: Radio 1 on high bands and radio 2 on low bands
AP8050TN-HD: Radio 1 on high bands and radio 2 on low bands

Changing the working frequency of radio 0 and radio 2 will delete the channel, power, and antenna gain configurations on radio 0 and radio 2. If an AP uses an external antenna, run the antenna-gain antenna-gain command to reconfigure the antenna gain to be consistent with the gain of the external antenna connected to the AP.

If the working frequency band of the AP radio set using the preceding commands is the same as that of the AP's actual working frequency band, the AP will not restart. Otherwise, the AP restarts after the preceding commands are run.

The configuration in the AP radio view has a higher priority than that in the AP group radio view.

If an AP works in dual-5G mode, the channels of the two 5G radios must be separated by at least one channel.

For example, a country supports 40 MHz 5G channels 36, 44, 52, and 60. When deploying 5G radio channels, if one radio is deployed on channel 36, it is recommended that the other radio be deployed on channel 52 or 60. Channel 44 is not recommended in this case.

Example

# Set the working frequency to the 5 GHz frequency band for radio 0 of AP.

<HUAWEI> system-view
[HUAWEI] wlan 
[HUAWEI-wlan-view] ap-id 1
[HUAWEI-wlan-ap-1] radio 0
[HUAWEI-wlan-radio-1/0] frequency 5g
Warning: Modifying the frequency band will delete the channel, power, and antenn
a gain configurations of the current radio on the AP and reboot the AP. Continue
?[Y/N]:Y