NETGEAR GS108T - ProSafe - Gigabit Smart Switch Manual

202-10562-01
January 2010
v1.0
NETGEAR, Inc.
350 East Plumeria Drive
San Jose, California 95134 USA
GS108T Hardware
Installation Guide

ii
v1.0, January 2010
© 2010 by NETGEAR, Inc. All rights reserved.
Trademarks
NETGEAR, the NETGEAR logo, and Auto Uplink are trademarks or registered trademarks of NETGEAR, Inc.
Microsoft, Windows, and Windows NT are registered trademarks of Microsoft Corporation. Other brand and product
names are registered trademarks or trademarks of their respective holders. Portions of this document are copyright
Intoto, Inc.
Statement of Conditions
In the interest of improving internal design, operational function, and/or reliability, NETGEAR reserves the right to
make changes to the products described in this document without notice.
NETGEAR does not assume any liability that may occur due to the use or application of the product(s) or circuit
layout(s) described herein.
Certificate of the Manufacturer/Importer
It is hereby certified that the GS108T Smart Switch has been suppressed in accordance with the conditions set out in the
BMPT-AmtsblVfg 243/1991 and Vfg 46/1992. The operation of some equipment (for example, test transmitters) in
accordance with the regulations may, however, be subject to certain restrictions. Please refer to the notes in the operating
instructions.
The Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market
and has been granted the right to test the series for compliance with the regulations.
Product and Publication Details
Model Number: GS108T
Publication Date: January 2010
Product Family: Smart Switch
Product Name: GS108T Smart Switch
Home or Business Product: Business
Language: English
Publication Part Number: 202-10562-01
Publication Version Number: 1.0

Contents iii
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Contents
GS108T Hardware Installation Guide
About This Manual
Conventions, Formats and Scope .....................................................................................v
How to Print this Manual ................................................................................................... vi
Revision History ............................................................................................................... vii
Chapter 1
Introduction
Overview .........................................................................................................................1-1
Features .........................................................................................................................1-2
Green Features ........................................................................................................1-3
Package Contents ..........................................................................................................1-3
Chapter 2
Physical Description
GS108T Front and Back Panel Configuration ................................................................2-1
LED Designations ...........................................................................................................2-2
Port LEDs .................................................................................................................2-2
System LEDs ...........................................................................................................2-3
Device Hardware Interfaces ...........................................................................................2-3
RJ-45 Ports ..............................................................................................................2-3
Powered-Device Port ...............................................................................................2-3
Reset Button ............................................................................................................2-4
Factory Defaults Button ............................................................................................2-4
Chapter 3
Applications
Desktop Switching ..........................................................................................................3-1

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Chapter 4
Installation
Step 1: Preparing the Site ..............................................................................................4-1
Step 2: Installing the Switch ...........................................................................................4-2
Installing the Switch on a Flat Surface .....................................................................4-2
Wall Mounting the Switch .........................................................................................4-2
Step 3: Checking the Installation ....................................................................................4-3
Step 4: Connecting Devices to the Switch ......................................................................4-3
Step 5: Applying Power ..................................................................................................4-4
Using an AC Power Source .....................................................................................4-4
Using a PoE Power Source ......................................................................................4-4
Step 6: Managing the Switch using a Web Browser or the PC Utility .............................4-5
Appendix A
Troubleshooting
Troubleshooting Chart ................................................................................................... A-1
Additional Troubleshooting Suggestions ....................................................................... A-2
Network Adapter Cards ...........................................................................................A-2
Configuration ........................................................................................................... A-2
Switch Integrity ........................................................................................................ A-2
Auto-Negotiation ..................................................................................................... A-3
Appendix B
Technical Specifications
Index

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About This Manual
The NETGEAR®ProSafeTM GS108T Hardware Installation Guide describes how to install and
power on the GS108T Smart Switch. The information in this manual is intended for readers with
intermediate computer and Internet skills.
Conventions, Formats and Scope
The conventions, formats, and scope of this manual are described in the following paragraphs:
•Typographical Conventions. This manual uses the following typographical conventions:
Italic Emphasis, books, CDs, file and server names, extensions
Bold User input, IP addresses, GUI screen text
Fixed Command prompt, CLI text, code
italic URL links
•Formats. This manual uses the following formats to highlight special messages:
Tip: This format is used to highlight a procedure that will save time or resources.
Warning: Ignoring this type of note may result in a malfunction or damage to the
equipment.
Note: This format is used to highlight information of importance or special interest.

Danger: This is a safety warning. Failure to take heed of this notice may result in
personal injury or death.
GS108T Hardware Installation Guide
vi About This Manual
v1.0, January 2010
•Scope. This manual is written for the GS108T Smart Switch according to these specifications:
Product Version GS108T Smart Switch
Manual Publication Date January 2010
Note: Product updates are available on the NETGEAR, Inc. website at
http://kbserver.netgear.com/main.asp.
How to Print this Manual
Your computer must have the free Adobe Acrobat reader installed in order to view and print PDF
files. The Acrobat reader is available on the Adobe Web site at
http://www.adobe.com.
•Printing a PDF Chapter. Use the PDF of This Chapter link at the top left of any page.
– Click the PDF of This Chapter link at the top left of any page in the chapter you want to
print. The PDF version of the chapter you were viewing opens in a browser window.
– Click the print icon in the upper left of your browser window.
•Printing a PDF version of the Complete Manual. Use the Complete PDF Manual link at the
top left of any page.
– Click the Complete PDF Manual link at the top left of any page in the manual. The PDF
version of the complete manual opens in a browser window.
– Click the print icon in the upper left of your browser window.
Tip: If your printer supports printing two pages on a single sheet of paper, you can
save paper and printer ink by selecting this feature.

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About This Manual vii
v1.0, January 2010
Revision History
Part Number Version
Number Date Description
202-10248-01 1.0 March 2007 Initial release
202-10562-01 1.0 January 2010 Hardware v2.0 and new software features including:
• DoS protection
• DHCP filtering
• Voice VLAN
• Auto-VoIP
• DiffServ
• MAC filtering
• Protected ports
• MAC and standard/extended IP ACLs

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Chapter 1
Introduction
Congratulations on the purchase of your GS108T Gigabit Smart Switch. The GS108T Smart
Switch is a state-of-the-art, high-performance, IEEE-compliant network solution designed for
users who require a small desktop switch and want the power of Gigabit connectivity to eliminate
bottlenecks, boost performance, and increase productivity. To simplify installation, the switch is
shipped ready for use out of the box.
This chapter serves as an introduction to the GS108T Smart Switch and provides the following
information:
•Overview
•Features
•Package Contents
Overview
This Installation Guide is for the GS108T Gigabit Smart Switch. This product offers support for
eight 10/100/1000 Mbps auto-sensing ports.
Using Gigabit ports, high-speed connections can be made to a server or network backbone. For
example:
• Linking to high-speed servers
• Providing 10/100/1000 Mbps copper connectivity
The GS108T Smart Switch also provides the benefit of administrative management with a
complete package of features for the observation, configuration, and control of the network. With a
Web-based Graphical User Interface (GUI), the switch’s many capabilities can be viewed and used
in a simple and intuitive manner. The switch’s management features include configuration for port
and switch information, VLAN for traffic control, port trunking for increased bandwidth, and
Class of Service (CoS) for traffic prioritization. These features provide better understanding and
control of the network. Initial discovery of the switch on the network requires the Smart Control
Center program, a utility that runs on a PC.

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The GS108T Smart Switch is a free-standing switch. It is IEEE-compliant and offers low latency
for high-speed networking. All ports can automatically negotiate to the highest speed. This
capability makes the switch ideal for environments that have a mix of Ethernet, Fast Ethernet, or
Gigabit Ethernet devices. In addition, all RJ-45 ports operate in half-duplex or full-duplex mode.
The maximum segment length is 328 feet (100 meters) over Category 5 Unshielded Twisted-Pair
(UTP) cable.
Features
The following list identifies the key features of the GS108T Smart Switch.
• Eight RJ-45 10/100/1000 Mbps auto sensing Gigabit switching ports.
• The devices support full NETGEAR Smart Switch functionality.
• The devices provide full compatibility with IEEE standards:
• IEEE 802.3i, (10BASE-T)
• IEEE 802.3u (100BASE-TX)
• IEEE 802.3ab (1000BASE-T)
• IEEE 802.3x (Full-duplex flow control)
• IEEE 802.3af (Power over Ethernet)
• Auto-sensing and auto-negotiating capabilities for all ports.
• Auto Uplink™ on all ports to make the right connection.
• Automatic address learning function to build the packet-forwarding information table. The
table contains up to 4K Media Access Control (MAC) addresses.
• Store-and-Forward transmission to remove bad packets from the network.
• Full-duplex IEEE 802.3x pause frame flow control.
• Active flow control to minimize packet loss/frame drops.
• Half-duplex back-pressure control.
• Per port LEDs, power LED.
• NETGEAR Green product series.
• External 12V/1A PA or power obtained from IEEE 802.3af PSE.

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Green Features
The GS108T Smart Switch supports the following power-saving features:
• The power consumption automatically adjusts based on the RJ-45 cable length.
• Each port is configured to automatically power down when the port link is down.
Package Contents
Figure 1-1 shows the package contents of the GS108T Gigabit Smart Switch.
Figure 1-1
Verify that the package contains the following:
• GS108T Gigabit Smart Switch
• Rubber footpads for tabletop installation
• Wall mounting screws (2)
• External power supply

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• Installation guide
• Smart Switch Resource CD with Smart Control Center utility and User’s manual
If any item is missing or damaged, contact the place of purchase immediately.

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Chapter 2
Physical Description
This chapter describes the GS108T Gigabit Smart Switch hardware features. Topics include:
•GS108T Front and Back Panel Configuration
•LED Designations
•Device Hardware Interfaces
GS108T Front and Back Panel Configuration
The GS108T Smart Switch is an eight-port 10/100/1000 Mbps Smart Switch. Every RJ-45 port is
capable of sensing the line speed and negotiating the operation duplex mode with the link partner
automatically
Figure 2-1 illustrates the NETGEAR GS108T Smart Switch front panel:
Power/Status LED
Link/Speed/ACT LEDs
10/100/1000 Mbps Ethernet Ports
Figure 2-1
The front panel contains the following:
• Eight RJ-45 connectors for 10/100/1000 Mbps auto-sensing Gigabit Ethernet switching ports
• Reset button to restart the device
• Recessed default reset button to restore the device back to the factory defaults
• Link, Speed, and Activity LEDs for each port
• Power and Status LED

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2-2 Physical Description
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Figure 2-2 illustrates the NETGEAR GS108T Smart Switch back panel:
Power Connector
Figure 2-2
The back panel contains a DC input for the supplied 12V/1A external power adapter.
LED Designations
Port LEDs
The following table describes the port LED designations.
Table 2-1. Port LEDs
LED Designation
100 Mbps Link/ACT (Left LED) • Off - No 100 Mbps link is established on the port.
•Solid Green - A valid 100 Mbps link is established on the port.
•Flashing Green - Packet transmission or reception is occurring on
the port at 100 Mbps.
10 Mbps Link/ACT (Right LED) • Off - No 10 Mbps link is established on the port.
•Solid Green - A valid 10 Mbps link is established on the port.
•Flashing Green - Packet transmission or reception is occurring on
the port at 10 Mbps.
1000 Mbps Link/ACT (Both LEDs) • Off - No 1000 Mbps link is established on the port.
•Solid Green - A valid 1000 Mbps link is established on the port.
•Flashing Green - Packet transmission or reception is occurring on
the port at 1000 Mbps.

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System LEDs
The following table describes the system LED designations.
Table 2-2. System LEDs
LED Designation
Power/Status LED • Solid Green - Power is supplied to the switch and is operating normally.
•Solid Yellow - The switch is booting.
•Off - Power is disconnected.
Device Hardware Interfaces
RJ-45 Ports
RJ-45 ports are auto-sensing ports. When inserting a cable into an RJ-45 port, the switch
automatically ascertains the maximum speed (10, 100, or 1000 Mbps) and duplex mode (half-
duplex or full-duplex) of the attached device. All ports support only unshielded twisted-pair (UTP)
cable terminated with an 8-pin RJ-45 plug.
To simplify the procedure for attaching devices, all RJ-45 ports support Auto Uplink. This
technology allows attaching devices to the RJ-45 ports with either straight-through or crossover
cables. When inserting a cable into the switch’s RJ-45 port, the switch automatically:
• Senses whether the cable is a straight-through or crossover cable.
• Determines whether the link to the attached device requires a “normal” connection (such as
when connecting the port to a PC) or an “uplink” connection (such as when connecting the
port to a router, switch, or hub).
• Configures the RJ-45 port to enable communications with the attached device, without
requiring user intervention. In this way, the Auto Uplink technology compensates for setting
uplink connections, while eliminating concern about whether to use crossover or straight-
through cables when attaching devices.
Powered-Device Port
The NETGEAR GS108T Smart Switch is a PoE Powered Device (PD) and can receive power
from PoE Power Sourcing Equipment (PSE). To power the GS108T Smart Switch from a PoE
power source, such as the NETGEAR GS748TPS ProSafe Gigabit Stackable PoE Smart Switch,
you can connect the PSE to Port 1 on the GS108T Smart Switch through a standard Cat5 UTP
cable. This allows the GS108T Smart Switch to be powered by PoE.

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Reset Button
The Smart Switch has a Reset button on the front panel to allow you to manually reboot the switch.
This action is equivalent to powering the unit off and back on. The last saved configuration is
loaded into the switch as it resets. To operate the Reset button, insert a device such as a paper clip
into the opening to press the recessed button. The front-panel LEDs should extinguish and light
again as the switch performs its Power On Self Test (POST).
Factory Defaults Button
The Smart Switch has a Factory Defaults button on the front panel so that you can remove the
current configuration and return the device to its factory settings. When you enable the Factory
Defaults button, all settings, including the password, VLAN settings, and port configurations will
be set to the factory default values. To operate the Factory Defaults button, insert a device such as
a paper clip into the opening to press the recessed button for at least two seconds.

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Chapter 3
Applications
Your GS108T Gigabit Smart Switch is designed to provide flexibility in configuring your network
connections. It can be used as a stand-alone device or with 10 Mbps, 100 Mbps, and 1000 Mbps
hubs and switches.
Desktop Switching
The GS108T Smart Switch can be used as a desktop switch to build a small network that enables
users to have 1000 Mbps access to a file server. With full-duplex enabled, the switch port
connected to the server or PC can provide 2000 Mbps throughput.
Deskto
p
PCs
Server
Firewall
Internet
`
``
`
Figure 3-1

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Chapter 4
Installation
This chapter describes the installation procedures for your GS108T Gigabit Smart Switch. Switch
installation involves the following steps:
Step 1: Preparing the Site
Step 2: Installing the Switch
Step 3: Checking the Installation
Step 4: Connecting Devices to the Switch
Step 5: Applying Power
Step 6: Managing the Switch using a Web Browser or the PC Utility
Step 1: Preparing the Site
Before you install the switch, ensure the operating environment meets the site requirements in the
following table.
Table 4-1. Site Requirements
Characteristics Requirements
Mounting • Desktop installations - Provide a flat table or shelf surface.
•Wall-mount installations - Wall-mount: select a location. You also need the mounting
screws supplied with your switch.
Access Locate the switch in a position that allows access to the front panel RJ-45 ports, view the
front panel LEDs, and access the power connector.

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Step 2: Installing the Switch
The GS108T Smart Switch can be used on a flat surface or mounted on the wall.
Installing the Switch on a Flat Surface
The switch ships with four self-adhesive rubber footpads. Stick one rubber footpad on each of the
four concave spaces on the bottom of the switch. The rubber footpads cushion the switch against
shock/vibrations.
Wall Mounting the Switch
To mount the switch on a wall (optional), install the two provided screws in positions that
correspond to the slots on the bottom side of the GS108T, then mount the switch.
Power source Provide a power adapter (included). Power specifications for the switch are shown in
Appendix A . Ensure the AC outlet is not controlled by a wall switch, which can
accidentally turn off power to the outlet and the switch.
Alternatively, you can use IEEE802.3af-compliant power sourcing equipment (PSE) to
supply power to the switch. Connect the PSE to Port 1 on the GS108T switch.
When both an external power supply and a PoE source are connected to the GS108T
switch, the external power source takes priority.
Environmental • Temperature - Install the switch in a dry area, with ambient temperature between 0 and
50ºC (32 and 122ºF). Keep the switch away from heat sources such as direct sunlight,
warm air exhausts, hot-air vents, and heaters.
•Operating humidity - The installation location should have a maximum relative
humidity of 90%, non-condensing.
•Ventilation - Do not restrict airflow by covering or obstructing air inlets on the sides of
the switch. Keep at least 2 inches (5.08 centimeters) free on all sides for cooling. Be
sure there is adequate airflow in the room or wiring closet where the switch is installed.
•Operating conditions - Keep the switch at least 6 ft. (1.83 m) away from nearest
source of electromagnetic noise, such as a photocopy machine.
Table 4-1. Site Requirements (continued)
Characteristics Requirements