Saturday, September 6, 2008
How to reset passwords on Cisco 2500 Series Router
The steps are:
1. Use a console cable.
2. Connect the cable to the serial port at your pc and the other end at the Routers
3. Use Hyper Terminal in windows.You can get it from Start>Programs>Accessories>Communication>
4. Use the default setting on the Hyper Terminal. Please identify ur serial port communication number before start configuring.
5. Switch on the router and press Ctrl+Pause within 60 seconds of the booting. Then you will enter a RAMMON mode.
6. Type o/r 0x42 and press Enter.
7. Type i and the router will restarts. Answer NO to all question or press Ctrl-C
8. Type enable and press enter. You are in the EXECUTION Mode now.
9. Type show start and you will see all the passwords for each interface. If the password if encrypted, follow step 10.
10.Type copy run start to copy to NVRAM in memory.
11.Type show run
12.To make a new password, type config term and then type enable secret your new password to set a new password. Then press Ctrl-Z
13.Type copy run start.
14.Type config term and type config-register 0x2102 and press enter
15.Press Ctrl-Z and press enter
16.Type copy running-config startup-config to save in into memory
17.Type reload to reboot the routers.
1. Use a console cable.
2. Connect the cable to the serial port at your pc and the other end at the Routers
3. Use Hyper Terminal in windows.You can get it from Start>Programs>Accessories>Communication>
4. Use the default setting on the Hyper Terminal. Please identify ur serial port communication number before start configuring.
5. Switch on the router and press Ctrl+Pause within 60 seconds of the booting. Then you will enter a RAMMON mode.
6. Type o/r 0x42 and press Enter.
7. Type i and the router will restarts. Answer NO to all question or press Ctrl-C
8. Type enable and press enter. You are in the EXECUTION Mode now.
9. Type show start and you will see all the passwords for each interface. If the password if encrypted, follow step 10.
10.Type copy run start to copy to NVRAM in memory.
11.Type show run
12.To make a new password, type config term and then type enable secret your new password to set a new password. Then press Ctrl-Z
13.Type copy run start.
14.Type config term and type config-register 0x2102 and press enter
15.Press Ctrl-Z and press enter
16.Type copy running-config startup-config to save in into memory
17.Type reload to reboot the routers.
Now you can configure the router with your new password . You have to remember that the password reset only can be done when you switch on the power by hand...so hackers cannot reset the password remotely...since the data center or conncetion room policies does not allow people to enter the room or go near to the routers...so u cannot switch off or on it.
# posted by Paris Heng NETwork : 9:12 PM
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