3.Make sure the cable is wired properly and connected on both ends.
4.Make sure the correct cable type has been selected.
5.If steps 1 through 4 are correct, please check the cable, as it may be defective or wired incorrectly. Replace the cable and try again. Please refer to Appendix A for Pin Assignments and Appendix B for Cabling Guidelines.
Full Duplex and Collision LED
The FDX/COLL LED uses a dual color LED to display two functions. A solid green light indicates that Full-Duplex operation has been detected. A flashing amber light indicates that a collision has occurred in half-duplex mode. Full- Duplex mode is auto-negotiated on all UTP ports.
UTP Ports
The Fast EtheRx Switch has sixteen (16) 10/100Mbps UTP ports that auto- negotiate 10/100BASE-TX connections and half- or full-duplex mode operation. The last UTP port has two RJ-45 port connectors for support of UTP cabling in the crossover or straight-through wiring configuration. Only one of the two ports may be utilized.
The RJ-45 port marked 
is internally crossed like all other UTP ports. By default, all repeater and switched UTP ports are generally configured as standard MDI-X, or internally crossed ports. With a straight-through cable, this port can be used for cascading to a standard MDI device, such as a network adapter or router. With a crossover cable, this port can be used for cascading to another MDI-X device, such as a hub.
The RJ-45 port marked 
is a standard straight-through port. With a crossover cable, this port can be used for cascading to another MDI device, such as a network adapter or router. With a straight-through cable, this port can be used for cascading to an internally crossed MDI-X device, such as a repeater, or hub.
