(Medium Dependent Interface port) Also called an "uplink port," it is a port on a network hub or switch used to connect to other hubs or switches without requiring a crossover cable. The MDI port does not cross the transmit and receive lines, which is done by the regular MDI-X ports that connect to end stations (the X stands for "crossed"). The MDI port connects to the MDI-X port on the other device. There are typically one or two ports on a device that can be toggled between MDI (not crossed) and MDI-X (crossed). See crossover cable.
Crossing Over!
The whole idea is to put the transmitted data onto the receive line of the receiving machine.
MDI/MDI-X Port
One port in a hub or switch typically provides the option of not crossing the lines. On this 10/100 switch from Omnitron, the MDI designations have been replaced with diagrams showing the physical configuration of the lines.
Crossing Over!
The whole idea is to put the transmitted data onto the receive line of the receiving machine.
MDI/MDI-X Port
One port in a hub or switch typically provides the option of not crossing the lines. On this 10/100 switch from Omnitron, the MDI designations have been replaced with diagrams showing the physical configuration of the lines.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
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