D-Link DES-3224 manual Troubleshooting, Problem Solution

10/100 Auto Negotiation Switch User’s Guide

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Troubleshooting

This troubleshooting section is intended to help you solve the most common problems on the DES-3224.

Many problems on the DES-3224 are indicated by the Utilization LED during the powering on process. All LEDs are explained in detail in Chapter 4, LEDs. Error codes are displayed on the Utilization LED. Table 8, System Error LED Indicators, displays the meaning of the error code. If you are having a problem that is not discussed here, contact technical support.

Problem	Solution
POST Errors	The DES-3224 performs a Power On Self Test (POST)
	every time it is powered on. If you are connected to the
	DES-3224 through Local Console Management during
	the POST you can see the results displayed on your
	monitor. The login screen appears after the DES-3224
	has completed the POST.
	The POST checks all of the hardware components on
	the DES-3224.
Cables	Faulty cables are the most common source of problems
	on Ethernet and Fast Ethernet networks. Check the
	cables 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,
	Connecting the DES-3224 to the Network, Cable
	Specifications, for a diagram showing the proper pin
	arrangement for Ethernet and Fast Ethernet.
Port States	All ports on the DES-3224 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 DES-3224 and on the Network Interface
	Card to verify settings. See Chapter 4, LEDs, for an
	explanation of all LEDs.
	The port settings on the DES-3224 and the port settings
	on the device you are connecting to must be the same in

Troubleshooting 58