Tech Blog

Hello,

Had an issue joining a Cisco 2800 AP to a Cisco Wireless Controller

So the first thing to check is country code of the AP and controller and the time.

The AP is a -E and the country is on the controller:

https://www.cisco.com/c/dam/assets/prod/wireless/wireless-compliance-tool/index.html

Time looks ok:

To the console!!!

debug capwap errors enable

Looks like this controller version 8.0.133.0 isnt compatible with 2800s:

https://www.cisco.com/c/en/us/td/docs/wireless/compatibility/matrix/compatibility-matrix.html

Time to upgrade.

First check the APs are compatible with the version you are going too:

Looks ok.  Next download it (oh also download the code you currently have installed in case you need it!) and while you’re waiting backup the controller config:

Before you reboot, go to the CLI:

Check the version:

Show boot

Show ap image all

Pre-image the APs:

config ap image predownload primary all

Check the progress:

Reboot the controller via the GUI.

Done:

Had a roaming issues with Symbol MC9090 RF scanners on a Cisco virtual WLC (AIR-CTVM-K9) but weirdly only at one site, even though the same setting were applied across all sites.

The issue was the scanners would drop their SSH connection when moving between APs.

Here’s all my findings:

• Update the scanner firmware, do this, it’s a pain but the newer firmware has so many features that are beneficial.
• Some Scanner firmware would not allow them to connect using the security method WPA2, so enable WPA /TKIP or a better option, update the scanner firmware.
• Secondly change the Scanners to CAM Mode = constant awake mode.
• Thirdly, Cisco TAC recommended using these settings:

Ensure the fast transition is set to adaptive (if you don’t see this then update the code on your WLC):

The Symbol RF scanners support CCKM according to the manual so enable this:

Weird one this one, Cisco told us to disable “Enable Session Timeout” (also disable Aironet IE)