Troubleshooting
If there is an operating problem with the Express Switching Hub,
incorrect configuration or cabling is probably the cause. Try the
troubleshooting steps below in order:
1 Verify that your cables are wired correctly. This is the most
common problem. Use a UTP crossover cable to directly connect
another switch, server, or workstation to the switch. Use a straight-
through cables when connecting to a repeater. See page 8 for more
information.
2 Make sure the unit is plugged into a grounded, functioning AC
outlet providing between 90 VAC and 264 VAC at 50/60 Hz.
3 Review the Link LEDs of other devices to ensure that those ports
you believe should be functioning are properly attached to the
switch with a Category 5 UTP cable.
4 Review the switch’s Link LEDS to ensure that ports you believe
should be functioning are properly configured, and not disabled or
partitioned.
5 If you configured a port for full duplex, make sure the device on
the other end is configured for full duplex and is capable of
transmitting in full duplex. Remember, you must have a point-to-
point connection for a full-duplex link. Most repeaters aren’t
capable of full duplex.
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