said by 97736118:
I forgot my cisco router's password and this problem bothers me for a long time. I want to find an easy way to reset password. Any thoughts ?
The router admin password or the encryption password/pass phrase/key?
If it's the latter log into the router as the admin user and see if the password is displayed in plain text. If you have a Windows 8/7/Vista or XP computer connected to the Cisco wirelessly see the attached .pdf file. You can also change the password here. Keep in mind you would need to update all of your clients if you change it here. DOCUMENT any changes you make for later use.
If you mean the router admin password you might post to the Cisco forum...
...or to the Cisco support forums site.
Returning the router to its factory defaults and reconfiguring from scratch maybe you only option.