AIR-AP3802E-Q-K9 C9105AXI-Q Not Connected

[Translator]

Fujitsu Laptop A5511/G windows10　

Intel(R) Wi-Fi 6 AX201

by someone's specifications

The access point is

AIR-AP3802E-Q-K9　

C9105AXI-Q

Even if we try to connect them, we are in trouble because there is no connection.

They used to connect.

The PC itself has the latest drivers.

ipv6 has been set to disable the internal LAN relationship.

even on another computer

LZ-WA10/W1

windows10

intel IEEE802.11a/b/g/n/ac/ax

It doesn't suddenly connect, so I try to connect it with a USB adapter.

What we have in common is a combination of Intel wifi adapters and cisco access points.

It is occurring one after another, and the problem is not known.

Can you give me some hints?

Thank you in advance.

[Leo Laohoo]

What is the wireless NIC drivers of the AX201?

[Translator]

I attached the driver link of the Fujitsu manufacturer site.

https://azby.fmworld.net/app/customer/driversearch/pc/drvdownload?mode=1&driverNumber=E1035266

v23.70.0.6 2024/8/28 Update

Also on Intel

v23.70.2 2024/8/20 update was also tried.

I visited Intel today.

v23.80.1 2024/10/1 is up and has not been tested yet.

If you have any concerns, please point them out.

Thank you in advance.

[Translator]

What kind of events were occurring when the connection became disconnected?
For example, a terminal may update to Windows, or the wireless AP may be updated from the old to the affected model in Cisco.
If you have a chance to upgrade the WLC or replace the terminal,
I think it will be easier to narrow down and get feedback.

· This is a perspective for identification.
If there is a difference that WPA3 Enterprise doesn't connect, but WPA3 Personal connects,
It will be easier to identify the function that is affecting.

· If there are still devices connected,
If you note the OS, chip type, driver version, etc., you will be able to compare the state if it is not connected.
When the connection is no longer connected, there is a possibility that you can track the front and back of the object to be changed from the terminal log.

[Translator]

Thank you for your reply.

> The device is Windows Update

Due to the nature of the business application, windows Update is restricted by the administrator not to update.

Windows 11 devices are starting to be introduced by updating old PCs, so winver is not consistent.

In addition, the previous windows 10 terminals have been updated gradually, and this is also a situation where the winver has not been unified.

>Replace the old wireless AP with the affected Cisco model

AIR-AP3802E-Q-K9　

C9105AXI-Q

In a situation where it is mixed with old APs or newly installed, I feel that something is bad after adding C9105AXI-Q. However, there are some things that are working properly, so it is difficult to cut them out in general.

>Upgrade the WLC

I didn't check it. I will check with the person in charge once.

[Translator]

I asked the person in charge.

Recently, I was updating the WLC.

However, since the WLC is installed at the headquarters side, it takes a little time to check the model name and soft version.

[Rich R]

- What model of WLC are you using?
- What version of software is the WLC running?

WLC software should be updated as per the TAC recommended versions document below.

[Translator]

Thank you for your reply.

I have a response from the person in charge.

■WLC Device Information
·Model number: C9800-40-K9
・OS:17.3.6

she said.

I also tried it on the cisco website, but could you tell me how to find the recommended version?

There is little information about the software description.

[Translator]

There is a separate TAC page.

Excuse me. Check the version content on the download page.

[Translator]

> ■ WLC Device Information
> · Model number: C9800-40-K9
> ・OS:17.3.6

v17.3.6 is a fairly old version.
The End of Vulnerability/Security Support:OS SW is missing, so it is better to plan an upgrade separately from the resolution of this trouble.

End-of-Sale and End-of-Life Announcement for the Cisco IOS XE 17.3.x - Cisco
https://www.cisco.com/c/en/us/products/collateral/ios-nx-os-software/ios-xe-17/ios-xe-17-3-x-eol.html

A realistic option would be a candidate version of long-term support for v17.12.x, v17.15.x. ※ The second is a multiple of 3 for long-term support.
Note: Although the affected model does not appear to be Wi-Fi 6E compatible, Japan's Wi-Fi 6E (6GHz) support will be available starting with v17.12.1.

[Rich R]

17.3.6 is effectively End of Life:
https://www.cisco.com/c/en/us/products/collateral/ios-nx-os-software/ios-xe-17/ios-xe-17-3-x-eol.html

TAC Recommended:
https://www.cisco.com/c/en/us/support/docs/wireless/catalyst-9800-series-wireless-controllers/214749-tac-recommended-ios-xe-builds-for-wirele.html#toc-hId-2052757410

Some of us are using 17.12.4 already as it has a number of additional fixes since 17.12.3 and has been stable so far. 
Note that there are SMU and APSP available which should be deployed with 17.12.4.
https://software.cisco.com/download/home/286316412/type/282046477/release/Dublin-17.12.4
https://software.cisco.com/download/home/286316412/type/286308587/release/17.12.4
https://software.cisco.com/download/home/286316412/type/286325254/release/17.12.4
And you should also make sure that the ROMMON is upgraded before doing the IOS-XE upgrade:
https://software.cisco.com/download/home/286316412/type/282046486/release/17.12(1r)
Check the release notes before upgrading:
https://www.cisco.com/c/en/us/td/docs/wireless/controller/9800/17-12/release-notes/rn-17-12-9800.html

If the AP still doesn't join after software is updated then do a factory default reset on the AP and collect the complete AP console logs from the AP (from startup) and save to .txt file and attach here for us to check.

Also take note of:
https://www.cisco.com/c/en/us/support/docs/field-notices/741/fn74109.html
https://www.cisco.com/c/en/us/support/docs/wireless/wireless-lan-controller-software/221869-safely-upgrade-access-points-avoiding-i.html
https://www.cisco.com/c/en/us/support/docs/wireless/catalyst-9800-series-wireless-controllers/220443-how-to-avoid-boot-loop-due-to-corrupted.html

[Translator]

Thank you for your reply.

I will tell the person in charge of the head office above. Also, I will tell you to consider upgrading.

I would like to report to you as soon as the situation changes.

Thank you very much.