We have a Wireless Lan Controller 4402 with software version 22.214.171.124. On Friday we experience a problem where our clients wouldn't get redirected to the internal webpage for authentication. It would just come up with page not found. We know the page was working fine becasue we could manually type in the
https://126.96.36.199/login.html and the
page would come up and you could login successfully. The users who were already connected to the controller were not affected and continued to operate. We have 2 other WLC's at the same software revision and they were not affected so I don't think it has anything to to with software level. Its like the webserver in the wlc failed to work. We failed over the AP's to the 3rd WLC and rebooted WLC1. After the WLC1 restarted we failed one of the previous non-working AP's back to it and it works again.
I know "now" there is debug commands to run at the time when the WLC wasn't working, but unfortunately I didn't know at the time. The WLC is running again fine and I was wondering if anybody has seen this issue before.
Any ideas on a fix or reason would be greatly appreciated.