Re: Cisco 9120 Access Point not working after restart

eflatunesedzade · ‎04-25-2025

Cisco 9120 Access Point port is down and up and then the device does not work. To make the device work, you need to unplug the cable from the port on the back of the device and plug it back in.

(The switch does not have a poe problem. After manually unplugging and plugging the cable from the access point, everything works fine.)

Has anyone encountered this? Why would this be?

marce1000 · ‎04-25-2025

- Post the full boot process of the AP for the not working case ,

M.

-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

Rich R · ‎04-26-2025

Like @marce1000 says we would need to see full logs from the AP to even begin to guess what might be wrong! Save the complete console log to text file and attach in your reply when the AP is not working.

What version of software are you using?

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TAC recommended codes for AireOS WLC's and TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's, Best Practices for 9800 WLC's and Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
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MHM Cisco World · ‎04-26-2025

Are you use any l2 secuirty'

Like dhcp snooping or 802.1x in SW?

Are you sure AP get new IP after reboot?

MHM