WIFI 6 enabled devices negotiates on Wif 4

At Customer site we installed 2*WX2880 ACs and 70+ WA6526E APs

After installation and configurations, we observed that some of LAPTOP users which supports WIFI 6 (802.1ax) but they negotiated on 802.11n (WIFI 4).

After troubleshooting we found that all smart phones are properly negotiated on 11ax, all Apple MAC bools are also connected to 11ax successfully , 

after deep testing we found that Intel(R) Wi-Fi 6E AX211 160MHz are also successfully negotiates on 11ax but only faced this issue on Intel(R) Wi-Fi 6AX201 160MHz NIC cards.

after troubleshooting we found that AC did not received VHT (very high throughput) capabilities in request from Intel(R) Wi-Fi 6AX201 160MHz NIC cards.. So thats why they can only negotiate to WIFI 4.

to resolve this issue, R&D released ne new version/patch . after applying this patch the issue resolved and WIFI 6 enabled devices can successfully negotiate on 802.11ax.

below is the device info and Version info

AP model: WA6526E

AC Model: WX2880

Before

AP version : Version 7.1.064，Release 2595P27

AC version: Version 7.1.064, Release 5629

After

AP version :  Version 7.1.064，Release 2595P28

AC version: Version 7.1.064, Release 5629P02

After upgrade, below is the status