Cisco Support Community
Community Member

WLC 4400


Can anyone tell the detail proceture/doc to remove software version 6 from a WLC 4400 and install a lower version of 5.1?

Thank you!


Re: WLC 4400

Did you keep your config on controller version 5.1?

Most likely you will loose your configuration when downgrading your controller.

You can find the steps here:

Hall of Fame Super Gold

Re: WLC 4400

I agree with Lucien, however, are you sure? It's like jumping from the frying pan into the fryer! A number of the NetPro experts have unanimously agreed that the 5.X firmware is a lost-cause. I'd like to call this version the "dune buggy" version.

Community Member

Re: WLC 4400

Sorry for the late response.

Actually I found the version 5.1 software is still on the controller as backup, so I just made this one as ACTIVE.

The reason I changed it back is the web-autnetication against Radius didn't work - didn't accept usename/pwd. After comparing the log on radius, the only difference is that version 6 sent NAS-Port-Type: Wireless - IEEE 802.11 to radius but version 5 don't. Any idea?


Cisco Employee

Re: WLC 4400

You can set the NAS Port Type in the RAS policy to wireless-IEEE 802.11 that should work

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