AP fails to join updated WLC

[JoelDarbro50834]

I am attempting to migrate my 1572 APs to an updated WLC 2504 running 8.5.151.0. This is for my home lab network.

1572s were working on 8.0.152.0 now they continually disassociate while trying to download the new image. I found Community posts that corrected the issue by disabling NTP and setting date to 2 Dec 2022. That doesn't seem to help. I've tried a fresh configuration wizard and hard reset of the AP.

Are there other corrections I could try?

Thank you

Joel

[marce1000]

  - FYI : https://www.cisco.com/c/en/us/support/docs/wireless/aironet-700-series-access-points/218447-ios-ap-image-download-fails-due-to-expir.html

  M.

[JoelDarbro50834]

I had thought the same thing. I remember reading this doc. I think maybe you had sent it. I had set the date to 2 Dec 2022 and let the controller run all night. Still no luck. Only when watching the AP log this morning did I catch..."certificate not valid till 7 Dec 2022". Looks like two of the 1572s I have are too new to join with 2 Dec date set. I set the date forward and all is working now.

[JoelDarbro50834 · Accepted solution]

I found my mistake. Caught on the AP console log that certificates on two of the 1572s had first valid dates of 7 Dec 2022. When I was setting the date manually to 2 Dec 2022 per the boot loop bulletin I was causing 2 of my APs to fail to download. The really confusing thing was that my 1572 I was using as the Mesh RAP had an early enough certificate to successfully join.

Glad I caught it. I was about ready to give up.