Wireless clients intermittently have no internet connection

[admin213]

We have an environment of both 1832i and 9105 AXI APs with the 9105 ap being the ewc. After being connected for a while, clients observe the globe icon instead of the wifi one and don’t have internet connection anymore, they have to switch to other ssid (other vlan) to connect successfully again. Please note that the issue is not happening at the same time for all the clients.

[balaji.bandi]

May be you need to identify the clients and debug what causing the issue.

we have seen some issue Windows 11 21H2 try to check DNS  and internet access that where you see that no internet.

may be worth pickup some clients and models and debug what causing the issue ?

Note : you have not provided your environment information - what Code running ?

[admin213]

Clients are all windows 10 users with intel chips, mobile users don't have that issue.

DNS is not the cause since users that are connected through ethernet don't face the issue. All devices are of Lenovo Thinkpad L15 and E15 models. The current running code is 17.11.1

[marce1000]

 - Have a checkup of the ewc-controller configuration with the CLI command show  tech wireless ; feed the output into :
                                                               https://cway.cisco.com/wireless-config-analyzer/

 Also for problematic clients you can do client debugging according to : https://logadvisor.cisco.com/logadvisor/wireless/9800/9800ClientConnectivity    you can have client debugs analyzed and processed with : 
                                                              https://cway.cisco.com/wireless-debug-analyzer      

 M.                                            

[Rich R]

What WLC?
What version of software?
What type of WLAN (open/WPA/802.1x) and auth method?
What timeouts configured on WLAN?
But go back to basic troubleshooting as the others have advised - check the config and debug the clients.
Make sure your software is up to date as per TAC recommended (below) to ensure you have fixes for known bugs as much as possible.

[admin213]

9105AXI

17.11.1

WPA2

Maximum timeout has been set

[Leo Laohoo]

---

@admin213 wrote:
clients observe the globe icon

---

What kind of wireless clients?  Are these Intel-based AX2xx OR Realtek RTL88xx wireless NICs?

[admin213]

wireless clients are are Intel-based AX2xx indeed.

[Leo Laohoo]

If these are all Intel-based AX2xx chips, what are their wireless NIC drivers?  

Intel has fixed some 802.11ax-related bugs from 22.200.2.1 (or newer) or 22.220.0.4 (or newer).  If the wireless NICs cannot be upgraded, disable 802.11ax either from the SSID or from the individual wireless NIC.   Please refer to CSCwe50033.

[Rich R]

Yep don't waste another minute troubleshooting until you've updated to https://www.intel.com/content/www/us/en/download/19351/windows-10-and-windows-11-wi-fi-drivers-for-intel-wireless-adapters.html

And look to get your code version onto an extended support release (17.9/17.12).  17.11 will never get any bug fixes so candidates to consider are 17.9.4 and 17.12.1.  Since you're already bleeding edge on 17.11 you might want to go to 17.12 (I have it running on EWC already - not seen any issues so far) but if looking for something more widely deployed then 17.9.4.  Downgrade is not officially supported though so check config carefully before and after if you decide to downgrade.