ap automatically downgrading

  • 0
  • 1
  • Question
  • Updated 2 years ago
  • Answered
Hi


We are trying to upgrade 3805i Access Point from 9.15.x to 9.21.x , AP GETS UPGRADED to 9.21.x BUT Immediately degrades  to 9.15.x automatically.
Photo of arabinda mohanty

arabinda mohanty

  • 190 Points 100 badge 2x thumb

Posted 2 years ago

  • 0
  • 1
Photo of Ronald Dvorak

Ronald Dvorak, Embassador

  • 50,226 Points 50k badge 2x thumb
Sorry but that is hard to believe without any screenshots, logs ...which you didn't provide.

My assumption is that the upgrade failed and that is the reason the AP is still on 9.15 after the upgrade attempt.

Set the log level to informational and check the output from the log.
What is the controller settings for AP maintenance mode - controlled upgrade enabled or disabled.
Photo of Ronald Dvorak

Ronald Dvorak, Embassador

  • 50,226 Points 50k badge 2x thumb
The controller is on 9.21 - correct ?
Photo of arabinda mohanty

arabinda mohanty

  • 190 Points 100 badge 2x thumb
yes
Photo of Ronald Dvorak

Ronald Dvorak, Embassador

  • 50,114 Points 50k badge 2x thumb
please provide the exact version .... 9.21.x.x
Photo of arabinda mohanty

arabinda mohanty

  • 190 Points 100 badge 2x thumb
Photo of Ronald Dvorak

Ronald Dvorak, Embassador

  • 50,226 Points 50k badge 2x thumb
OK so the AP is running 9.15, but I don't see any proof that there is a upgrade and also a downgrade after that as you've described the issue.
Photo of arabinda mohanty

arabinda mohanty

  • 190 Points 100 badge 2x thumb
i thought why dont i put one more wifi ...
is it  solution?
Photo of Sai Prasad Rao Rapolu

Sai Prasad Rao Rapolu

  • 1,494 Points 1k badge 2x thumb
Hi Aravind 


You said AP upgraded to 9.21.x.x and immediately it rolled back to 9.15.x.x

Which means AP has upgraded successfully..

You try to delete the AP from controller, again the ap gets adopted , then retry to upgrade the AP
Photo of Ronald Dvorak

Ronald Dvorak, Embassador

  • 50,226 Points 50k badge 2x thumb
Let's do it step by step....

1) in the controller GUI go to > wireless APs > Global Settings > AP maintenance > is the upgrade bevahior set to ...
a) Upgrade when AP connects using settings from Controlled Upgrade
OR
b) Always upgrade AP to default image

2) go to > Controller > Logs >set "Wireless Controller Log Level:" AND "Wireless AP Log Level:" to informational

3) try again to upgrade the AP and after the whole process go to > Logs > Severity: All
copy/paste the result here or take a screenshot to post
Photo of Umut Aydin

Umut Aydin, Escalation Support Engineer

  • 2,300 Points 2k badge 2x thumb
Let assume the upgrade worked before..then the solely posibility that the AP revert his code back is
if he resets 3 times . In this case the AP will take his 2nd image / backup image.
If you upgrade the AP twice then yo will have the same code as your primary code and for your secondary / backup code.
In this situation it shouldn't back after a reset.
FYI.

But till get this approved it's the best you try it wit controlled upgarde.
If your AP are behing Cloud/Internet/VPN reduce the MTU size to 1400.
Maybe tftp(upgrade) is maybe forbidden or the MTU size was to big?!

Good luck

Umut
Photo of arabinda mohanty

arabinda mohanty

  • 190 Points 100 badge 2x thumb
According to your suggestion i replaced one ap and automatically it upgraded to my firmware...
now it working fine.......
Photo of Sai Prasad Rao Rapolu

Sai Prasad Rao Rapolu

  • 1,494 Points 1k badge 2x thumb
Great !!

It worked for you ...... ;-)