Milan Technology MIL-S24002TGXX manual Troubleshooting, Diagnosing LED Indicator, Power, Cabling

5. Troubleshooting

The Switch can be easily monitored through panel indicators to assist in identifying problems. This section describes common problems you may encounter and where you can find possible solutions.

￿Diagnosing LED Indicator

If Link indicator does not light up after connection, you may check whether network interface (e.g., a network adapter card on the attached device), network cable, or switch port is defective or not. Verify that the switch and attached device are power on. Be sure the cable is plugged into both the switch and corresponding device. Verified the proper cable type is used and its length does not exceed specified limits.

￿Power

IF the power indicator does turn on when the power cord is plugged in, you may have a problem with power outlet, or power cord. However, if the Switch powers off after running for a while check for loose power connections, power losses or surges at power outlet. IF you still cannot resolve the problem, contact your local dealer for assistance.

￿Transmission Mode

Verify that each port is set to the same transmission mode used by the attached device (i.e., half or full duplex). RJ-45 port uses auto-negotiation to set the transmission mode. If the attached device operates at half duplex, the default when auto-negotiation fails, then it does not have to support auto-negotiation.

￿Cabling

RJ-45 ports: Use unshielded twisted-pair (UTP) or shield twisted-pair (STP) cable for

RJ-45 connections: 100G Category 3,4 or 5 cable for 10Mbps connections or 100G Category 5 cable for 100Mbps connections or 4-pair Category 5 copper cabling for 1000Mbps connection. Also be sure that the length of any twisted-pair connection does not exceed 100 meters (328 feet).

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