60CHAPTER 5: TROUBLESHOOTING
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:
■(4) Module Active LEDs
■(3) Link/Activity LEDs
■(5) Power LED
A link is connected, but the Link/Activity LED for the port is off.
There is a problem with this connection. Verify that:
■The device being connected to is powered on and operating correctly.
■The cable is connected at both ends.
■The cable is not damaged.
■If the connection is to a workstation, that the workstation's network interface is installed and configured correctly.
■The correct category of cable is being used for the required link speed. Category 3 cables can be used for
A fiber cable is connected, but the Module Active LED is off.
Verify that:
■The fiber cable is in good condition.
■The SFP module is correctly inserted.
■A 3Com SFP module is being used. Refer to “Approved SFP Transceivers” on page 18 for details.
■The equipment at the far end is installed and cor- rectly configured.
The Link/Activity LED is on, but network perfor- mance is poor
The Switch supports
