Troubleshooting - D-Link DSS-24 User Manual

DSS-24 10/100 Auto Negotiation Switch User's Guide
This troubleshooting section is intended to help you solve the most common
problems on the DSS-24.
Problem
Cables
Port States
Power LED is Off
All LEDs are Off
No Link

Troubleshooting

Troubleshooting
Solution
Faulty cable is the most common source of problems on
Ethernet and Fast Ethernet networks. Check the cable first
if you are having any problems connecting to a device.
Ethernet is more fault tolerant than Fast Ethernet. If you are
moving from Ethernet to Fast Ethernet, make sure the
cables are pinned out correctly. See Chapter 3, Network
Connections, Cable Specifications, for a diagram showing
the proper cable pin arrangement for Ethernet and Fast
Ethernet.
All ports on the DSS-24 have two modes: auto negotiation
mode and forced mode. Ports in auto negotiation mode auto
negotiate the proper speed and duplex mode. Ports in
forced mode have been manually set to a particular speed
and duplex mode. Check the LEDs on the DSS-24 to verify
settings.
The port settings on the DSS-24 and the port settings on the
device you are connecting to must be the same in order for
them to communicate. Check the speed and duplex setting
on both the port and the device you are connecting to.
Check the three pronged power plug and verify that you are
getting power from the wall socket. If the DSS-24 is on and
the power LED is not working properly, return the DSS-24.
If the DSS-24 is not powering on while the power cord is
plugged into wall socket, the power supply is not working.
Return the unit.
Check the power plug and verify that the DSS-24 is
receiving adequate power. Power the DSS-24 off and
power it back on again. Return the unit if the problem
persists.
If a cable is plugged into the port and the Link/ Act/
Collision LED is dark, check the cable and connection. The
6
23