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Troubleshooting
207344-B 4-3
Port Connection Problems
Symptom: The LED on a switch port is off.
If an LED does not light when traffic is present, there may be a port connection
problem.
To resolve the problem:
1. Verify whether or not the port is enabled, using SpeedView or the CLI.
a. From the Map window in SpeedView, choose Switch and then choose
Configure.
When the configuration information has been downloaded to the
management station, check the port state. The port state should be either
enabled or disabled.
b. From the Map window, choose Statistics.
When the statistics information has been downloaded to the management
station, check the port state. If the port state is Down, the port is receiving
no link signal or is disabled.
c. From a configuration terminal connected to the serial port on the
switch, access the CLI.
Use the
show port command and specify the module number and port
number for the suspected port. When the port information is displayed,
verify that port_state is up and that the SPT state is forwarding.
2. Verify that the cable is correctly connected at both ends of the link.
Disconnect and reseat the cable at the switch module port, at the patch panel
or punchdown block, and at the device to which the link is attached. Check
the port LED for a change in status.