I have a SRE 710 that has a WLC 710 on it. Everything was working including GUI...A interface got added and in the name there is a space ie:" WLC GUI" within a few minutes I reset a CUE on a SRE and within a minute the GUI stopped on the WLC. I tried to remove the interface but I cannot and I suspect it is the space causing issues.
If you have an interface name that is messed up.. Can you telnet or SSH to the controller?? If so then I would copy the config off using TFTP or FTP; edit the config and then re-upload the config to the controller that will alleviate the interface name issue. As for the GUI make sure that the