WLAN Controller

How to reset admin password of cisco wlan controller 4402 remotely?
noorudinAsked:
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lrmooreCommented:
You cannot reset the password remotely.
What version WLC Code are you running?

Password Recovery in WLC versions 5.1 and later

If you forget your password in WLC version 5.1 and later, you can use the CLI from the serial console of the controller in order to configure a new user name and password.

After the controller boots up, enter the Restore-Password command at the user prompt. This command is only accepted for the initial user login and becomes disabled after a user logs in. You are prompted to enter a new username/password, which can then be used to log into the controller and modify settings.

Before version 5.1, there is no password recovery option on the Wireless LAN Controller (WLC). You need to set the WLC in order to factory defaults and reconfigure it. In order to set the WLC to factory defaults, power cycle the WLC, press the ESC Key during the boot up process from the console, and choose last option(5) in order to clear the configuration and reboot the Wireless LAN Controller.

Note:  The new default username and password is admin.
Reference:
http://www.cisco.com/en/US/products/ps6308/products_password_recovery09186a008071faa7.shtml
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lrmooreCommented:
You may have to get someone to connect a laptop or PC to the serial console, and then get you remote access to the PC. Finding the correct serial cable that came with the WLC4402 might be the hardest part of the job..
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