NETGEAR EN108, EN116 manual Cable and Connector Information, Network Interface Cards, Hub Integrity

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Network Interface Cards

Make sure the network interface cards installed in the workstations are in working condition and the software driver has been installed.

Hub Integrity

If required, verify the integrity of the hub by resetting it. Turn power to the switch off and then back on. If the problem continues and you have completed all the preceding diagnoses, contact NETGEAR Customer Support. For the phone number of the representative in your area, see “Customer Support.”

Cable and Connector Information

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.

The figures illustrate the use of straight-through and crossover twisted pair cables.

Uplink or

Straight-through

twisted pair cable

MDI port

 

1

 

Tx

 

2

 

3

 

Rx

 

6

 

Normal or

Crossover

MDI-X port twisted pair cable

1

Rx

Normal or MDI-X port

1

Rx

2

3

Tx

6

Normal or MDI-X port

1

Rx

Tx

2

3

6

2

3

6Tx

8146EC

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. Only two pairs are used for 10BASE-T wiring.

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Model EN104/EN108/EN116 Ethernet Hub Installation Guide

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Contents Page Start Here FeaturesPackage Contents Vista 10BASE-T Network Ports with Built-in LEDs Product IllustrationLabel Color Activity Description LEDsNormal/Uplink Push Button Rear PanelCharacteristic Requirement Installation Procedures Prepare the SiteConnectt tthe Hub to a Netwotrk Install the HubConnect a PC to the Hub Cascade the Hub Connecting Port Connecting Device Cable Used On the HubConnecting Port Connecting Device Cable Used Set the Normal/Uplink Push ButtonConnect to a Network Using the BNC Port Connect to a Network Using the AUI Port Verify InstallationSymptom Cause Solution Troubleshooting InformationHub Integrity Cable and Connector InformationRJ-45 Connector Network Interface CardsAUI Connector Pin Assignment Signal AUI ConnectorBNC Connector DC Output Voltage Power Adapter Technical SpecificationsTrademarks EN100NA-2