(Optional) Enabling the Backhaul Function on the 4.9 GHz Frequency Band

Context

Before using the 4.9 GHz frequency band, ensure that you have obtained the 4.9 GHz license from the local administrative department and use the band properly.

Only the AP8130DN-W and AP8150DN support the 4.9 GHz frequency band.

The 4.9 GHz frequency band is applicable to outdoor backhaul scenarios but not wireless coverage services. It is mainly used by WDS and Mesh backhaul links. The 4.9 GHz frequency band is out of the channel range reselected using DFS.

The following table lists channels and frequency distribution of the 4.9 GHz frequency band.

Channel No.	Parameters	Description
184	Frequency Band	4.9G
	Center Frequency (MHz)	4920
	Upper Frequency (MHz)	4910
	Lower Frequency (MHz)	4930
188	Frequency Band	4.9G
	Center Frequency (MHz)	4940
	Upper Frequency (MHz)	4930
	Lower Frequency (MHz)	4950
192	Frequency Band	4.9G
	Center Frequency (MHz)	4960
	Upper Frequency (MHz)	4950
	Lower Frequency (MHz)	4970
196	Frequency Band	4.9G
	Center Frequency (MHz)	4980
	Upper Frequency (MHz)	4970
	Lower Frequency (MHz)	4990

The 4.9 GHz frequency band supports channel bandwidths of 20 MHz and 40 MHz. Channels 184+188 or 192+196 can be bundled into a 40 MHz channel. Similar to the 5 GHz frequency band, the 4.9 GHz frequency band complies with 802.11a/n/ac.

Procedure

Run system-view
The system view is displayed.
Run wlan
The WLAN view is displayed.
Run regulatory-domain-profile name profile-name
The regulatory domain profile is displayed.

By default, the system provides the regulatory domain profile default.
Run wideband enable
The wideband function, that is, the 4.9 GHz frequency band, of the regulatory domain profile is enabled.

By default, the wideband function of the regulatory domain profile is disabled.

After the wideband function of the regulatory domain profile is enabled, APs bound to this profile are automatically reset.

Only after the wideband function of the regulatory domain profile is enabled, you can configure channels and bandwidth of the 4.9 GHz frequency band.
Run quit
Return to the WLAN view.
Bind the regulatory domain profile to an AP group or AP.
- Binding the regulatory domain profile to an AP group
  1. Run the ap-group name group-name command to enter the AP group view.
  2. Run the regulatory-domain-profile profile-name command to bind the regulatory domain profile to the AP group.
    
    By default, the regulatory domain profile default is bound to an AP group.
- Binding the regulatory domain profile to an AP
  1. Run the ap-id ap-id, ap-mac ap-mac, or ap-name ap-name command to enter the AP view.
  2. Run the regulatory-domain-profile profile-name command to bind the regulatory domain profile to the AP.
    
    By default, no regulatory domain profile is bound to an AP.

Verifying the Configuration

Run the display regulatory-domain-profile { all | name profile-name } command to check the status of the wideband function in the regulatory domain profile.
Run the display references regulatory-domain-profile name profile-name command to check reference information about the regulatory domain profile.