WLC 5508 lost the configuration after rebooting the device

[Amey Naik]

Hi All,

I had an issue with the WLC 5508 Controller, when i rebooted the WLC after saving the entire configurations, i lost all the current configurations when it rebooted & booted to default settings.

IOS version running on WLC 

8.0.140.0 - bck up

8.2.151.0 (default) (active)

can you please help me to understand the exact issue that caused losing all the configuration from the WLC.

[Sandeep Choudhary]

are you sure ..you saved the conifg of WLC ?

Cjeck again: try to create a new ssid, save the config and then reboot again ...

Check the Release Notes, could be a bug: https://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/crn82mr5.html

Regards

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[Amey Naik]

Hi Sandeep,

Thanks for the reply, yes i saved the configuration properly & also had back up of the WLC, before reboot.

Software Version 8.2.151.0
Field Recovery Image Version
6.0.182.0
FUS:-1.7 version.
for the WLC's.
let me know if any other information is required.

[Sandeep Choudhary]

Hi,

You can try by running the backup SW version on wlc and check ifs removing the config after reboot or not!!

else......

You have a bad WLC. You will have to RMA that. Open a TAC case and tell them the issue and they will replace that with a new unit.

Regards

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[Amey Naik]

i got the below bug on cisco, when i was trying to look for the resolution. it says might need to upgrade FUS to 1.9 version for 5508 WLC's. please find the below link for reference.

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCul68057

[Sandeep Choudhary]

I would say..first upgrade to the recommanded stable version SW on WLC and try again.

If still fails then also update FUS 1.9 on WLC.

Please plan a downtime for it ..it may take alltogether around 1 hour.

Regards

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