User`s guide

Using the MultiSwitch 300
3-4 Installation and Setup
allowing simultaneous transmission and reception, eliminating collisions. With this
combination, a 200 Mb/s link can be established between two switches separated by
any supported distance. This should be more than sufficient for most LAN
applications.
TX Cabling
The MultiSwitch 300 is an MDI-X device. Connections to other MDI-X devices, such
as another MultiSwitch 300 or a hub, should be made with a crossed Category 5 patch
cable (DIGITAL BN25G). The maximum cable length from a 100 Mb/s port is 100 m.
For a connection to an MDI device, such as a workstation, a straight Category 5 patch
cable should be used. The pinouts of the connectors are diagrammed in Figure 3-2
below. A crossed cable pinout is shown in Figure 3-3.
Figure 3-2: RJ45 Connector Pinouts
FEMALE RJ45 (MDI-X), INCLUDES MOST HUBS
1RX+ 5 Unused
2 RX- 6 TX-
3TX+ 7 Unused
4 Unused 8 Unused
Figure 3-3: Crossed Cable Pinout
FEMALE RJ45 (MDI), INCLUDES MOST NICS
1 TX+ 5 Unused
2 TX- 6 RX-
3 RX+ 7 Unused
4 Unused 8 Unused