5
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.
For more information on how to obtain support for your
Switch, refer to Appendix A.
Forgotten Password
If you forget the password to the Web interface after
you set it, you will need to reset the Switch to regain
access. See “Resetting to Factory Defaults” on page 43
for instructions.
After resetting the Switch, log on to the Web interface
using the default admin account settings:
■ User name – admin
■ Password – blank (no password)
Forgotten Static IP Address
If you forget the static IP address that you assigned to
the Switch and you need to access the Web interface,
use the Discovery application to automatically detect the
IP address and connect to the interface.
For information on using the Discovery application, refer
to “Running the Discovery Application” on page 21.
Solving LED Issues
This section lists some issues that are related to the LEDs
on the front panel of the Switch. For information on
basic LED checks, refer to the following topics in
Chapter 1:
■ (3) Link/Activity Status LEDs
■ (4) Module Active LEDs
■ (5) Port Duplex LEDs
■ (6) Power LED
A link is connected but the Link/Activity Status LED
for the port does not light
There is a problem with this connection. Check that:
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