Notes On Mdi And Mdi-X - Kingston Technology KNS500/WG User Manual

Front Panel
The following diagrams show the relationship between cable type and which
cascade configuration to use. To verify the pin wiring of your UTP cable, see
"Appendix A Pin Assignments."
Using a Straight-Through Cable
EtheRx Switch
CASCADE
Using a Crossover Cable
EtheRx Switch
CASCADE

Notes on MDI and MDI-X

MDI (Media Dependent Interface) is the standard that defines the mechanical
and electrical configuration of a UTP port.
communicate with each other on the network, the transmitter of one device
must be connected to the receiver of the other device. This can be achieved by
using a crossover cable, or by using the MDI-X port, which implements the
crossover internally.
Port 1 through port 4 on the KNS500/WG, and port 1 through port 7 on the
KNS800/WG, like all normal hub ports, are configured MDI-X. The last UTP
port, port 5 on the KNS500/WG, or port 8 on the KNS800/WG, supports both
port configurations, MDI and MDI-X. All NICs (Network Interface Cards) and
Router ports are usually by default configured MDI. A simple illustration
shows the relationship of cable types to port types:
Switch Port
Position Config
MDI-X
MDI
KNS800/WG User's Guide - Rev. B01
Leave the cascade switch in
the default crossover (MDI-
X) position when connecting
the last UTP port on the
Fast EtheRx Switch to a
network card or router (or
other MDI configured
device).
Leave the cascade switch in
the default crossover (MDI-
X) position when connecting
the last UTP port on the
Fast EtheRx Switch
another hub or switch (or
other MDI-X configured
device).
For Connection to
another Hub Port (MDI-X)
Use Crossover cable
Use Straight-through cable
EtheRx Switch
CASCADE
EtheRx Switch
to
CASCADE
For any two devices to
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Move the cascade switch to
the straight-through position
when connecting the last
UTP port on
EtheRx Switch to another
hub or switch (or other MDI-
X configured device).
Move the cascade switch to
the straight-through position
when connecting the last
UTP port on
EtheRx Switch to a network
card or router (or other MDI
configured device).
For Connection to a
Network Adapter (MDI)
Use Straight-through cable
Use Crossover cable
7
the Fast
the Fast