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Fat AP and Cloud AP V200R010C00 Command Reference

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The channel command sets the working bandwidth and channel for a radio.

The undo channel command restores the default working bandwidth and channel of a radio.

By default, the working bandwidth of a radio is 20 MHz, and no working channel is configured for a radio.


channel { 20mhz | 40mhz-minus | 40mhz-plus | 80mhz | 160mhz } channel

channel 80+80mhz channel1 channel2

channel { 20mhz | 40mhz-minus | 40mhz-plus | 80mhz } channel [ index index ]

undo channel [ index index ]

Only vehicle-mounted APs support the parameter index index.






Sets the working bandwidth of a radio to 20 MHz.



Sets the working bandwidth of a radio to 40 MHz Minus.



Sets the working bandwidth of a radio to 40 MHz Plus.



Sets the working bandwidth of a radio to 80 MHz.



Sets the working bandwidth of a radio to 160 MHz.



Specifies the working channel for a radio. The channel is selected based on the country code and radio mode.

The parameter is an enumeration value. The value range is determined according to the country code and radio mode.

index index

Specifies the index of a channel.

The value can be 0 or 1. The default value is 0.


Radio interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

Different radios use different channels. Channels for radios also vary in different countries and regions. Select channels based on the actual situations.

You need to specify the parameter index index only when a train switches between lines in vehicle-ground communication scenarios.


The configured channel parameters must match the radio frequency band. For details about mappings between channel parameters and frequency bands, see Country Codes & Channels Compliance. You can obtain this table at Huawei technical support website.

The channels you configure must be supported by the terminals; otherwise, the terminals cannot discover wireless signals. For example, when the country code is set to China, 5 GHz channels 36, 40, 44, 48, 52, 56, 60, and 64 can be configured. However, most terminals do not support these channels currently. If these channels are configured, the terminals cannot discover wireless signals. In this case, you can configure 5 GHz channels 149, 153, 157, 161, and 165, which are supported by the terminals.

If an AP detects radar signals on a channel, the channel cannot be configured as the radio channel of the AP in 30 minutes.

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.

  • The 80 MHz, 160 MHz, and 80+80 MHz working bandwidths are only supported in the 5G radio view.

  • 802.11ac APs support the 80 MHz configuration, whereas four-spatial-stream 802.11ac APs allow for the 160 MHz or 80+80 MHz configuration.


# Set the working bandwidth to 20 MHz and channel to 6 for the radio interface Wlan-Radio 0/0/0.
<Huawei> system-view
[Huawei] interface wlan-radio 0/0/0
[Huawei-Wlan-Radio0/0/0] channel 20mhz 6
Warning: This action may cause service interruption. Continue?[Y/N]y
Updated: 2019-11-21

Document ID: EDOC1100064352

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