Maintenance And Troubleshooting; Software Loading Failure; Password Missing Failure; Missing User Password - 3Com 4210G Series Getting Started Manual

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Maintenance and Troubleshooting

Software Loading Failure

If software loading fails, the system keeps running in original version. In this case, check if the physical
ports are properly connected.
If the ports are not properly connected, reconnect them correctly and restart the loading procedure.
If the ports are properly connected, check the loading procedure information displayed on the
HyperTerminal for input errors. If there is any input error, restart the loading procedure with correct
input.
For example, when using XMODEM, verify that you have reset the baud rate of the HyperTerminal to
19,200 bps after loading the software with a baud rate other than 19,200 bps; when using TFTP, verify
that you have specified the correct server and switch IP addresses, the correct name of the software to
be loaded and the correct working path of TFTP server; when using FTP, verify that you have specified
the correct server and switch IP addresses, the correct name of the software to be loaded and the
correct username and password.
If software loading fails but there are neither physical connection problems nor input errors, please
contact your agent for help. Missing Password

Password Missing Failure

Missing User Password

If you have forgotten your user password, you can enter the Boot Menu:
BOOT MENU
1. Download application file to flash
2. Select application file to boot
3. Display all files in flash
4. Delete file from flash
5. Modify bootrom password
6. Enter bootrom upgrade menu
7. Skip current configuration file
8. Set bootrom password recovery
9. Set switch startup mode
0. Reboot
Enter your choice(0-9):
Select 7, and then restart the switch. After the switch is restarted, the user password is removed.

Missing Boot ROM Password

Please contact with your switch dealer.
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