3com 4210G Manual De Usuario

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6  
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.  
z
 
If the ports are not properly connected, reconnect them correctly and restart the loading procedure. 
z
 
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.