9311 TroubleshootingHardware DiagnosticsLoopback diagnostic tests are available for testing the NIC hardware under Windows.These tests provide access to NIC internal/external diagnostics, where packet informationis transmitted across the physical link. See “Diagnostics” on page 87.Checking Port LEDsThe NIC has four LEDs, one for each port speed option (10 Mbps, 100 Mbps, and 1 Gbps),and one for Data Transfer. The three port speed LEDs indicate active links, and the dataLED indicates data transfer status. When the driver has been loaded and the cables areconnected properly, the appropriate speed LED is lit and the data LED is on if data trafficis present.Before the port LEDs can provide troubleshooting information, the NIC must be connectedto the network (see “Installing and Connecting the NIC” on page 7) and the network driversfor your particular operating system must be installed.1 Verify that the NIC driver software has been installed and that the NIC is connected toa network.2 Check to see that the NIC status LEDs operate as described in the following table:LED State Description1000 On Good Gigabit Ethernet link.Off No 1000 Mbps link; possible link at different speed, possible bad cable, badconnector, or configuration mismatch.100 On Good 100 Mbps Fast Ethernet link.Off No 100 Mbps link; possible link at different speed, possible bad cable, badconnector, or configuration mismatch.10 On Good 10 Mbps Ethernet link.Off No 10 Mbps link; possible link at different speed, possible bad cable, badconnector, or configuration mismatch.ACT Blinking Brief bursts of data detected on the port.On Streams of data detected on the port.Off No data detected on the port.
