Netgear FS104 Installation Guide - Page 13

Symptom Cause Solution Yellow Rx/Tx Collision LED is blinking excessively. Data collision is The port and switch might be functioning correctly. occurring on the port. However, check the following to make sure that excessive collisions are normal (as in most Ethernet networks) and not caused by: • Incorrect cabling or connectors • Wiring techniques • Mismatched duplex operating mode settings Green FDX LED is off when you have set the port to operate in fullduplex mode. Port is operating in half-duplex mode. Make sure the connected device is able to operate at half-duplex mode and check the specifications of the connected device to make sure it has the ability to signal the operating mode. Verify that the connected device is operational. If the connected device is an adapter card, make sure you have an adapter card that is capable of 100 Mbps operation and set to 100 Mbps if it is not autosensing. Cable and Connector Information Twisted Pair Cables For two devices to communicate, the transmitter of each device must be connected to the receiver of the other device. The crossover function is usually implemented internally as part of the circuitry in the device. Most ports on switches and repeaters have media-dependent interfaces with crossover ports. These ports are referred to as MDI-X or normal ports. Computer and workstation adapter cards are usually media-dependent interface ports referred to as MDI or uplink ports. The figures illustrate the use of straight-through and crossover twisted pair cables. Uplink or MDI port 1 Tx 2 Straight-through twisted pair cable Normal or MDI-X port 1 Rx 2 3 Rx 6 3 Tx 6 Normal or MDI-X port 1 Rx 2 Crossover twisted pair cable Normal or MDI-X port 1 Rx 2 3 Tx 6 3 Tx 6 8146EB Model FS102, Model FS104, Model FS108 Fast Ethernt Switch Installation Guide