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Fast SwitcHub-2se User’s Guide
2-2 Setup and Configuration
Making RJ-45 Connections
1. Prepare a straight-through twisted-pair cable with RJ-45 plugs at both ends.
2. If you are making a connection to a server or workstation (i.e., a dedicated
connection to an end-node device), be sure that it has a properly installed
100BASE-TX or 10BASE-T network interface card. Attach one end of the
cable to the
MDI-X station port on the switch and the other end to the RJ-45
port of the device’s network interface card. As a general rule, the length of
twisted-pair cable forming a direct link between any two network devices
should not exceed 100 meters.
Note: Category 5 twisted-pair cable (100W) must be used for 100Mbps connections.
Although Category 3, 4 or 5 cable can be used for 10Mbps connections, we highly
recommend that you also use Category 5 cable for these connections to avoid any
unnecessary expense or confusion if you subsequently upgrade to Fast Ethernet.
If you are connecting to a network interconnection device, attach one end of
the cable to the
MDI crossover port on the switch and the other end to an
MDI-X station port on the other device (or vice versa). When cascading to
devices other than this switch, please refer to the accompanying
documentation for restrictions on stack size. Also note that because the
switch breaks up the path for connected devices into separate collision
domains, you should not include the switch or connected cabling in your
calculations for cascade length involving other devices.
Note: In contrast to repeater hubs, a cascade of switches breaks up the collision
domain. The number of switches that can be cascaded is therefore theoretically
unlimited. However, in practice, the length of a cascade may be limited by the time-
out requirements of the particular applications running over the network.
3. Set the communication mode via the Configure button to full-duplex or
half-duplex mode to match the connected device. (Refer to
Setting the
Communication Mode in Chapter 3.)
I
Do not plug a phone jack connector into the RJ-45 port. This may damage the
switch. Instead, use only twisted-pair cables with RJ-45 connectors that conform
to FCC standards.