Netgear FS524 User Manual download pdf (Page 10)

Model FS516/FS524 Fast Ethernet Switch Installation Guide

Twisted Pair Cables

For two devices to communicate, the transmitter of each device must be

connected to the receiver of the other device. The crossover function is usually

implemented internally as part of the circuitry in the device. Most ports on

switches and repeaters have media-dependent interfaces with crossover ports.

These ports are referred to as MDI-X or normal ports. Computer and

workstation adapter cards are usually media-dependent interface ports referred

to as MDI or uplink ports.

These two figures illustrate the use of straight-through and crossover twisted

pair cables.

RJ-45 Connector

The RJ-45 connector (shown in the illustration with an RJ-45 plug) is used to

connect workstations, hubs, and switches through unshielded twisted pair cable.

The RJ-45 connector accepts four-pair Category 3 or Category 5 UTP cable.

RJ-45

Connector

Assignment

Normal Assignment

on Ports 1–8,

1–16, or 1–24

Uplink Assignment

on Port 8, 16, or 24

1 Input Receive Data + Output Transmit Data +

2 Input Receive Data - Output Transmit Data -

3 Output Transmit Data + Input Receive Data +

6 Output Transmit Data - Input Receive Data -

4, 5, 7, 8 Not used Not used

Straight-through

twisted pair cable

Crossover

twisted pair cable

8146EC

Uplink or

MDI port

Normal or

MDI-X port

Normal or

MDI-X port

Normal or

MDI-X port

711EA

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Netgear FS524 User Manual Page 10

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