Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

IP/VC 3510 Password Recovery Procedure

Hi, I am trying to upgrade my 3510 but it does not accept login/password pair. Anybody can help how to recover password on IP/VC 3510? It is not exist in TAC Password Recovery page. It is an urgent case, thanks in advance,



Re: IP/VC 3510 Password Recovery Procedure

Follow this procedure for the password recovery of 3510

1. Connect the null modem cablet to the serial

port on the front of the MCU and the other end to your computer.

2. Launch Hyperterminal and select Com 1, then change the video bit rate to 9600 and flow control to "none". All other settings are default.

3. Hit the key combination Control-X to reboot the MCU (or just power down and power up the 3510)

4. When the device reboots you will see trace activity in the Hyperterminal session then you will see "press any key to configure". Press a key and you will see a menu with various options. One of the options is password. Here you can set the password then the system needs to reboot.