Cabletron Systems 3H08-04 User Manual

Chapter 5: Diagnostics and Troubleshooting

If the FE Switch Modules power up normally, but the workstations are 
unable to communicate:

1. Check the LED for abnormalities which may help indicate the source 

of the problem. (LED behavior during normal operation is explained 
earlier in this chapter.)

2. Check the status of the ports using Local Console Manager

3. Check for loose connections between the switch module and devices.

4. Check that the proper type of cable is used: crossover or 

straight-through, depending on the configuration; distance limitations 
are adhered to, etc. (For more information on other limitations or 
restrictions that may apply, see the IEEE 802.3 standards 
specification.)