3Com 2426-PWR If the Problem Persists, Link/Activity LED is on, but network performance is poor

The Link/Activity LED is on, but network performance is poor

The Switch supports full-duplex autonegotiation. If the connected device does not support autonegotiation, ensure that it is configured for half-duplex operation only. If the connected device has autonegotiation dis- abled or overridden, and is configured as full-duplex, the Switch will configure the link as half-duplex, caus- ing a mismatch that will reduce network performance when data is transmitting and receiving simultaneously on the same link.

Ensure that the connected device has either:

■Autonegotiation enabled, or

■The ports are configured for half-duplex operation

All ports appear to show continual activity.

There may be broadcast storms on the network. Remove port connections one at a time, waiting a few seconds between each port. If the LEDs go off after removing a port connection, the device that was con- nected to that port is introducing an excessive amount of broadcast frames to the network. Some pieces of network equipment operate by sending out broadcast frames regularly.

Refer to the documentation that accompanies the device for information on disabling the broadcast operation.

If the Problem Persists 77

If the Problem Persists

If the problem persists and the unit still does not oper- ate successfully, contact your 3Com network supplier with the following information before returning the unit:

■Product number and serial number (printed on a label supplied with the unit).

■A brief description of the issue