D-Link DSS 24 User Guide - Page 29

DSS-24 10/100 Auto Negotiation Switch User's Guide 6 Troubleshooting This troubleshooting section is intended to help you solve the most common problems on the DSS-24. Problem Solution Cables Port States Power LED is Off All LEDs are Off 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. No Link Troubleshooting If a cable is plugged into the port and the Link/ Act/ Collision LED is dark, check the cable and connection. The 23