Table D. Troubleshooting with
Indicator Color | Meaning | Possible Cause | Corrective Action |
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Not lit
Port is set to
—
If 10BASE-T half-duplex operation is desired, no action is required. If 10BASE-T half- duplex operation is not desired, refer to Setting 10BASE-T/100BASE-TX Port Modes of Operation on page 14 for information.
*A collision is a normal event on a
Ethernet uses the CSMA/CD (Carrier Sense Multiple Access/Collision Detect) media access method by which two or more stations share a common transmission medium. Using CSMA/CD, a station monitors the medium and transmits a message in
Excessive collisions occur when retransmission of a frame fails after 16 consecutive times and the frame is dropped. Excessive collisions may indicate that the network is becoming congested.
34 | C2607M (2/07) |