D-Link DFE-2600 manual Fast Ethernet Module DFE-260TX, Making Connections

Dual-Speed Stackable Hubs User’s Guide

∙Power/Tx his LED is lit when the hub is on and blinks when packets are being transmitted by the module.

∙Link/Rx his LED is lit when the fiber optic ports are properly connect- ed to a powered-on device and blinks when packets are being received by the module.

∙Collision his LED blinks when there are packet collisions on the fiber optic link.

∙FDX his LED is lit when the fiber optic port is set for Full Duplex transmit and receive. When the LED is off, the fiber optic port is in Half Duplex mode.

The duplex mode DIP switch allows you to set the fiber optic lines to Full Duplex mode operation. Only the right-hand switch (number 2) is active. Use it to set the duplex mode.

Fast Ethernet Module (DFE-260TX)

The Fast Ethernet module provides one additional twisted-pair Fast Ethernet connection. A twisted-pair connection of this kind is particularly useful for creating a link between two DFE-2600 series hub stacks, placing them in separate collision domains. A link of this sort eliminates the need for an ex- ternal switch to divide stacks into separate domains. Dividing the stacks into separate collision domains overcomes the Fast Ethernet two-repeater limita- tion, and effectively doubles overall bandwidth.

32 Making Connections