Using A Crossover Cable; Notes On Mdi And Mdi-X Ports - Kingston Technology KNE12TX/RS User Manual

8
Use the MDI-X port
when connecting to
a network card or
other MDI device.
8
8
Using a Straight-Through Cable

Using a Crossover Cable

Use the MDI port
when connecting to
a network card or
other MDI device.
8 8

Notes on MDI and MDI-X Ports

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.
Ports 1 thru 7 (KNE8TX/RS), ports 1 thru 11 (KNE12TX/RS), and ports 1 thru
23 (KNE24TX/RS), like all normal hub ports, are configured as MDI-X. The
last UTP port has two (2) RJ-45 connectors in order to support both MDI and
MDI-X configurations for flexibility when uplinking to another Class
repeater using either cable type. All NICs (Network Interface Cards) and
Router ports are usually by default configured as MDI. A simple illustration
shows the relationship of cable types to port types:
Port Port
Connector Config Another Hub Port (MDI-X)
MDI-X Use Crossover cable
MDI Use Straight-through cable
Table 1. Port Configurations
Kingston Technology Company
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8 8
For any two devices to
For Connection to For Connection to a Network
Adapter or Router (MDI)
Use Straight-through cable
Use Crossover cable
KNE24TX/RS User's Guide - Rev. A01
Hardware Installation
Use the MDI port
when connecting to
a hub or other MDI-X
device.
Use the MDI-X port
when connecting to
a hub or other MDI-X
device.
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