4-1
4 Troubleshooting
This chapter lists some issues that you may encounter while installing, using, and managing the switch,
with suggested courses of corrective action to take.
If you encounter an issue that is not listed here and you cannot solve it, check the 3Com
Knowledgebase at http://knowledgebase.3com.com.before contacting your local technical support
representative.
Resetting to Factory Defaults
If the switch does not operate normally or if the firmware becomes corrupted, you can reset the switch to
factory defaults.
z Resetting the switch to factory defaults erases all your settings. You will need to reconfigure the
switch after you reset it.
z The switch will perform automatic IP configuration after you reset it. See Configuring IP Address for
more information.
To reset the switch to its factory defaults by the following ways:
z Web interface
Accessing the Web interface, and then pressing the “RESET” on the Initialize tab of the Administration
menu. After you click “Initialize all information”, a confirmation message appears, Click OK to confirm.
z CLI
Using the restore command through the Console Port (See
CLI Reference Guide).
Forgotten Password
If you forget the password to the Web interface after you set it, you can regain access by the following
ways:.
Reset the switch
See Resetting to Factory Defaults for instructions.
After resetting the switch, log on to the Web interface using the default admin account settings:
z User name: admin
z Password: blank (no password)
