Dell PowerConnect 2624 User Manual - Page 16
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Table 2-1. Basic Troubleshooting
Problem
Link LED is not lighted.
Link speed LED indicates a lower
speed than expected.
16
Troubleshooting
(continued)
Probable Cause
The cable is not securely
connected to the switch or the
attached device.
The attached device is not
configured correctly, or it is not
powered on.
The cable is damaged or not
properly terminated.
The cable's maximum distance
has been exceeded.
Mismatched duplex mode.
Bad switch port.
Incorrect cable grade.
Damaged cable.
The cable's maximum distance
has been exceeded.
Corrective Action
Ensure that the connectors are
fully inserted into the ports of the
switch and the attached device.
Ensure that the attached device is
powered on. Verify that the NIC
on the attached device is
operating properly.
Test the cable.
Try a known working cable.
Ensure that the cables are
terminated using TIA 568A or
568B standards.
10Base-T, 100Base-T, and
1000Base-T cables have
limitations for link lengths. Move
the connected device closer to the
switch and use a shorter cable.
Ensure that all devices connected
to the switch are configured to
automatically detect and set port
speed and duplex settings.
Reconnect the connector for the
affected link to a different switch
port.
Ensure that you are using
Category 5 cable or better for all
10Base-T and 100Base-T links, or
Category 5e for 1000Base-T links.
Test any cables that have kinks,
sharp bends, or appear to be
damaged.
10Base-T, 100Base-T, and
1000Base-T cables have
limitations for link lengths. Move
the connected device closer to the
switch and use a shorter cable.