How to configure 5G-prior access on an AC

In 5G-prior access mode, if an AP and a STA support both the 5 GHz and 2.4 GHz frequency bands, the AP can request the STA to associate with the 5 GHz radio preferentially.

On the live network, most STAs support both the 5 GHz and 2.4 GHz frequency bands, and a STA usually associates with an AP's 2.4 GHz radio by default when connecting to the Internet. To connect to the 5 GHz radio, you need to manually select the 5 GHz radio. When the 2.4 GHz frequency band has many users or severe interference, the 5 GHz frequency band can provide a better access service for wireless users. The 5G-prior access function enables STAs to preferentially associate with the 5 GHz radio.

5G-prior access is implemented as follows:

When an AP receives a Probe Request frame from a STA, the AP checks the radio receiving the frame. If the Probe Request frame is received by the 2.4 GHz radio, the AP does not send a Probe Response frame. If the Probe Request frame is received by the 5 GHz radio, the AP sends a Probe Response frame immediately. Then the STA associates with the 5 GHz radio.

If only the 2.4 GHz radio receives 25 Probe Request frames continuously but the 5 GHz radio does not receive any Probe Request frame, the AP returns a Probe Response frame on the 2.4 GHz radio. Then the STA associates with the 2.4 GHz radio.

For details about how to configure 5G-prior access on an AC (taking the AC6605 as an example), see:

V200R005:

Configuring 5G-Prior or Normal Access

V200R006:

http://support.huawei.com/ehedex/pages/DOC1000088060DEE1226D/07/DOC1000088060DEE1226D/07/resources/dc/dc_cfg_wlan_rrm_0009.html?ft=0&id=dc_cfg_wlan_rrm_0009]
Configuring Band Steering

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