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.
Rx
(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
AB
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
Uplink
Normal