WLC 2504 Hangs after upgrading 7.4 firmware

[Shobhit Sinha]

Hi All

We have WLC2504 (  Upgraded to Firmware 7.4) and AP'S are AP 1602

When Wirless Controller trying to Connects AP'S then they are hanging and same is happening for AP'S os we are not able to do configuration.

Pinging continous is breaking for WLC IP Address.

We have upgraded to Latest Firmware 7.4...

I have read that this is Bug in  Firmware 7.4....What is the work around??

Thanks

[Saurav Lodh]

Please refer the below discussion

https://supportforums.cisco.com/discussion/11862536/cannot-join-1602i-aps-wlc-2504

[Leo Laohoo]

Upgrade to 7.4.121.X for more stability.

Make sure you've upgraded the FUS too!

[abwahid]

Hi,

Make sure your WLC 2504 is sync with the NTP Server.