TROUBLESHOOTING
Communication Mode
The communication mode of each port (half or full duplex and 10 Mbps or 100 Mbps) must be identical to the mode of the attached device. Verify that each port is set to the same communication modes used by the attached device. Each
(See Chapter 4, “Configuration and Management”, for port configuration instructions.)
Cabling
Verify that the cabling type is correct. Be sure all cable connectors are securely seated in the required ports. Also check to be sure you are using the proper cable type: straight- through or crossover. Use Category 5
Make sure all devices are connected to the network. Equipment may have been disconnected unintentionally.
Network Cards
Make sure the network interface hardware and software drivers for the attached devices are functioning properly. Check the network cards and associated drivers used in any attached workstation or server.
Physical Configuration
If problems occur after altering the network configuration, restore the original connections, and try to track the problems