NETGEAR EN104TP EN104TP EN104TP User manual

Model EN104TP/EN106TP/EN108TP Ethernet Hub Installation Guide

Congratulations on your purchase of the NETGEAR™ Model EN104TP, Model

EN106TP, or Model EN108TP Ethernet hub. The hubs deliver standards-based,

plug-and-play networking solutions for small businesses, home offices, and low-

density workgroups of larger companies.

In this installation guide, all three hubs are referred to collectively as the Model

EN104TP/EN106TP/EN108TP hub. Each hub is listed individually when

information is provided that refers to a specific model.

The Model EN104TP/EN106TP/EN108TP hub has the following features:

• Four (on the Model EN104TP hub), six (on the Model EN106TP hub), and

eight (on the Model EN108TP hub) vista 10BASE-T network ports (RJ-45)

that provide 10 megabit per second (Mbps) networking using simple

unshielded twisted pair (UTP) wiring

• Built-in LED indicators for at-a-glance status checks provided by vista

network ports

• Uplink port for connecting to other hubs using simple straight-through

cables

• Clear front-panel light-emitting diode (LED) indicators to monitor overall

hub status

• Plug-and-play installation with no software to configure

• Complete hub functions including packet retiming, collision detection,

preamble regeneration, and fragment extension

• Automatic partitioning and reconnection of a port that has excessive

collisions or is jabbering

• Automatic polarity detection for recognizing and correcting incorrect

polarity on the receive pair

• Compact design, enabling easy tabletop or rack-mounting installation

• External power adapter

• Limited five-year warranty on the unit and one-year warranty on the power

supply

Start Here

Features

Model EN104TP/EN106TP/EN108TP Ethernet Hub Installation Guide

Verify that your package contains the following:

• Model EN104TP hub, Model EN106TP hub,

or Model EN108TP hub

• Mounting kit (for wall installation)

• This installation guide

• Warranty & Owner Registration Card

• Power adapter

Package Contents

8722FA

Power

adapter

and cord

Mounting kit

Installation guide,

Warranty & Owner

Registration Card

Model EN104TP hub Model EN106TP hub Model EN108TP hub

or or

1234 56 78

Pwr

Col

EN108TP

10 BASE-T HUB

123456

Link/Rx Partition Normal/Uplink

Pwr

Col

EN106TP

10 BASE-T HUB

EN104TP

10 BASE-T HUB

Model EN104TP/EN106TP/EN108TP Ethernet Hub Installation Guide

Vista 10BASE-T Network Ports with Built-in LEDs

The front panel of the Model EN104TP hub has four RJ-45 10BASE-T ports, the

Model EN106TP hub has six RJ-45 10BASE-T ports, and the Model EN108TP

hub has eight RJ-45 10BASE-T ports. Two LEDs—the Link LED and the Rx

LED—are built into each 10BASE-T port.

Product Illustration

8723FA

Front Panel of the Model EN104TP hub

Front Panel of the Model EN106TP hub

Front Panel of the Model EN108TP hub

123456

LINK Rx Normal/Uplink

Pwr

Col

EN106TP

10 BASE-T HUB

Pwr

Col

EN104TP

10 BASE-T HUB

Pwr (Power)

10BASE-T ports

Normal/Uplink

push button

Col (Collision)

LINK Rx

1234 56 78

Pwr

Col

EN108TP

10 BASE-T HUB LINK Rx

8724EA

Link

LED Rx

LED

Model EN104TP/EN106TP/EN108TP Ethernet Hub Installation Guide

LEDs

The table below describes the activity of the LEDs.

Normal/Uplink Push Button

The Normal/Uplink push button allows you to select Normal (MDI-X) wiring

for direct PC connection. The push button also allows you to select Uplink

(MDI) wiring for connection to a hub or a switch through port 4 on the Model

EN104TP hub, port 6 on the Model EN106TP hub, or port 8 on the Model

EN108TP

hub. This uplink configuration eliminates the need to use a crossover

cable. The other 10BASE-T ports are permanently configured for normal wiring

for connection to a PC.

Rear Panel

The rear panel of the hub has a ground clip and a receptacle for the power

adapter.

Label Color Activity Description

Pwr (Power) Green On Power is supplied to the hub.

Col (collision) Amber Blinking Data collision is occurring on the network. Note

that occasional collisions are normal.

Link

(located on the

top left corner of

each vista

10BASE-T port)

Green On The link between this port and the connected

device is good.

(located on the

top right corner

of each vista

10BASE-T port)

Green Blinking There is incoming data on the port.

8730FA

5Vdc 800mA

Power

receptacle

– +

Model EN104TP/EN106TP/EN108TP Ethernet Hub Installation Guide

Before you begin installing your hub, prepare the installation site. Make sure

your operating environment meets the operating environment requirements of

the equipment.

To install your hub on a flat surface, you do not need any special tools. Be sure

the hub is positioned with at least 2 inches of space on all sides for ventilation.

To install the hub on a wall, measure the distance between the mounting holes

on the back of the hub and mark the wall to match the location of the mounting

holes on the hub. At the marked location, screw into the wall the two screws that

you received with the mounting kit included in your package contents. Be sure

to choose a location that is near the devices to be connected, is close to an

electrical outlet, and provides at least 2 inches of space all around the hub for

ventilation.

Characteristic Requirement

Temperature Ambient temperature between 0°and 40°C (32°and 104°F).

No nearby heat sources such as direct sunlight, warm air

exhausts, or heaters.

Operating humidity Maximum relative humidity of 90%, noncondensing.

Ventilation Minimum 2 inches (5.08 cm) on all sides for cooling.

Adequate airflow in room or wiring closet.

Operating

conditions At least 6 feet (1.83 m) to nearest source of electromagnetic

noise (such as photocopy machine or arc welder).

Service access Minimum 12 inches (19.68 cm) front and back for service access

and maintenance.

Front and backclearance for cables and wiring hardware suchas

punchdown blocks.

Power Adequate power source within 6 feet (1.83 m).

Wiring hardware Wiring hardware, such as punchdown blocks or patch panels,

should be complete before installing the hub.

Installation Procedures

Prepare the Site

Install the Hub

Model EN104TP/EN106TP/EN108TP Ethernet Hub Installation Guide

You can connect PCs, Apple Macintosh computers, UNIX workstations, or any

device equipped with a 10BASE-T Ethernet interface to the RJ-45 ports on your

hub by using twisted pair Ethernet cables.

To connect any of the RJ-45 ports on your hub to a PC, use a regular straight-through

UTP cable. If you are connecting using port 4 on the Model EN104TP hub, port 6 on the

Model EN106TPhub, or port 8 on the Model EN108TP hub, set the Normal/Uplink push

button to Normal.

Note: Ethernet specifications limit the cable length between your PC

or server and the hub to 328 feet (100 meters) in length.

Connect a PC to the Hub

Normal/Uplink

1234

Pwr

Col 56

8726FA

(The Model EN106TP hub is

shown in the illustration.)

Model EN104TP/EN106TP/EN108TP Ethernet Hub Installation Guide

Cascading refers to connecting hubs together to increase the number of ports or

the number of users supported on the network. The 10BASE-T ports can be used

to cascade hubs together.

The twisted pair cable extended from a 10BASE-T port (or UTP port) is called a

twisted pair segment and can be up to 100 meters (m) in length. The 10BASE-T

ports, with the exception of port 4 on the Model EN104TP hub, port 6 on the

Model EN106TP hub, or port 8 on the Model EN108TP hub, are MDI-X (or

Normal) ports. Use the following table as a guide for selecting the appropriate

network cable.

Set the Normal/Uplink Push Button

If you are connecting to port 4 on the Model EN104TP hub, port 6 on the Model

EN106TP hub, or port 8 on the Model EN108TP hub, use the following table.

Determine the type of cable to use and how to set the Normal/Uplink push

button for port 4, port 6, or port 8.

Connecting Port

on the Hub Connecting Device Cable Used

Model EN104TP hub:

Ports 1–3 PC, server, or router Straight-through cable

Ports 1–3 Hub or switch Crossover cable

Model EN106TP hub:

Ports 1–5 PC, server, or router Straight-through cable

Ports 1–5 Hub or switch Crossover cable

Model EN108TP hub:

Ports 1–7 PC, server, or router Straight-through cable

Ports 1–7 Hub or switch Crossover cable

Connecting Port Connecting Device Cable Used

Port 4, port 6, or port 8 set to

Normal PC, server, or router Straight-through cable

Port 4, port 6, or port 8 set to

Uplink Hub or switch Straight-through cable

Connect the Hub to a Network

Model EN104TP/EN106TP/EN108TP Ethernet Hub Installation Guide

Cascade the Hub

The following illustration shows cascading hubs together in a hierarchical star

through the 10BASE-T ports and indicates the setting of the Normal/Uplink

push button on each hub.

Note: Ethernet specifications limit the number of hubs with twisted

pair links in any communication path to five, as shown in the example.

When PC “A” communicates with PC “B,” the communication path

goes from hub 4 to hub 2, to hub 1, to hub 3, and then to hub 5 (or five

paths).

123456

Link/Rx Partition Normal/Uplink

Pwr

Col

EN106TP

10 BASE-T HUB

1234 56 78

Pwr

Col

EN108TP

10 BASE-T HUB

1234 56 78

Pwr

Col

EN108TP

10 BASE-T HUB

8727FA

Model EN108TP hub

Model EN104TP hubs

Model EN108TP hub

Model EN106TP hub

Uplink

Normal

UplinkUplink

Uplink

Model EN104TP/EN106TP/EN108TP Ethernet Hub Installation Guide

The following illustration shows cascading hubs together daisy-chain style and

indicates the setting of the Normal/Uplink push button on each hub.

1234 56 78

Pwr

Col

EN108TP

10 BASE-T HUB

123456

Link/Rx Partition Normal/Uplink

Pwr

Col

EN106TP

10 BASE-T HUB

EN104TP

10 BASE-T HUB

8728FA

Model EN106TP hub

Model EN108TP hub

Model EN104TP hub

Uplink

Normal

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