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Using a crossover cable – Kingston Technology KNS500/WG User Manual

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KNS800/WG User’s Guide - Rev. B01 Kingston Technology Company

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

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).

EtheRx Switch

CASCADE

Move the cascade switch to
the straight-through position
when connecting the last
UTP port on the Fast
EtheRx Switch to another
hub or switch (or other MDI-
X configured device).

Using a Crossover Cable

EtheRx Switch

CASCADE

Leave the cascade switch in
the default crossover (MDI-
X) position when connecting
the last UTP port on the
Fast EtheRx Switch to
another hub or switch (or
other MDI-X configured
device).

EtheRx Switch

CASCADE

Move the cascade switch to
the straight-through position
when connecting the last
UTP port on the Fast
EtheRx Switch to a network
card or router (or other MDI
configured device).

Notes on MDI and MDI-X

MDI (Media Dependent Interface) is the standard that defines the mechanical
and electrical configuration of a UTP port. For any two devices to
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

Position

Port

Config

For Connection to

another Hub Port (MDI-X)

For Connection to a

Network Adapter (MDI)

MDI-X

Use Crossover cable

Use Straight-through cable

MDI

Use Straight-through cable

Use Crossover cable

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