NETGEAR GS748TS-100NAS User manual

202-10233-01
April 2007
NETGEAR, Inc.
4500 Great America Parkway
Santa Clara, CA 95054 USA
GS748T Software User
Manual

ii
v2.0, April 2007
© 2007 by NETGEAR, Inc. All rights reserved. FullManual.
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.
April 2007
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 GS748T 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.
Bestätigung des Herstellers/Importeurs
Es wird hiermit bestätigt, daß dasGS748T Smart Switch gemäß der im BMPT-AmtsblVfg 243/1991 und Vfg 46/1992
aufgeführten Bestimmungen entstört ist. Das vorschriftsmäßige Betreiben einiger Geräte (z.B. Testsender) kann jedoch
gewissen Beschränkungen unterliegen. Lesen Sie dazu bitte die Anmerkungen in der Betriebsanleitung.
Das Bundesamt für Zulassungen in der Telekommunikation wurde davon unterrichtet, daß dieses Gerät auf den Markt
gebracht wurde und es ist berechtigt, die Serie auf die Erfüllung der Vorschriften hin zu überprüfen.
Voluntary Control Council for Interference (VCCI) Statement
This equipment is in the Class B category (information equipment to be used in a residential area or an adjacent area
thereto) and conforms to the standards set by the Voluntary Control Council for Interference by Data Processing
Equipment and Electronic Office Machines aimed at preventing radio interference in such residential areas. When used
near a radio or TV receiver, it may become the cause of radio interference. Read instructions for correct handling.
Note: Delete this note and the information below for products that are not wireless.

v2.0, April 2007
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Regulatory Compliance Information
This section includes user requirements for operating this product in accordance with National laws for usage of radio
spectrum and operation of radio devices. Failure of the end-user to comply with the applicable requirements may result
in unlawful operation and adverse action against the end-user by the applicable National regulatory authority.
NOTE: This product's firmware limits operation to only the channels allowed in a particular Region or Country.
Therefore, all options described in this user's guide may not be available in your version of the product.
Europe – EU Declaration of Conformity
Marking by the above symbol indicates compliance with the Essential Requirements of the R&TTE Directive of the
European Union (1999/5/EC). This equipment meets the following conformance standards:
EN300 328, EN301 489-17, EN60950
Europe – Declaration of Conformity in Languages of the European Community
Cesky [Czech] NETGEAR Inc. tímto prohlašuje, že tento Radiolan je ve shode se základními
požadavky a dalšími príslušnými ustanoveními smernice 1999/5/ES..
Dansk
[Danish]
Undertegnede NETGEAR Inc. erklærer herved, at følgende udstyr Radiolan overholder
de væsentlige krav og øvrige relevante krav i direktiv 1999/5/EF.
Deutsch
[German]
Hiermit erklärt NETGEAR Inc., dass sich das Gerät Radiolan in Übereinstimmung mit
den grundlegenden Anforderungen und den übrigen einschlägigen Bestimmungen der
Richtlinie 1999/5/EG befindet.
Eesti
[Estonian]
Käesolevaga kinnitab NETGEAR Inc. seadme Radiolan vastavust direktiivi 1999/5/EÜ
põhinõuetele ja nimetatud direktiivist tulenevatele teistele asjakohastele sätetele.
English Hereby, NETGEAR Inc., declares that this Radiolan is in compliance with the essential
requirements and other relevant provisions of Directive 1999/5/EC.
Español
[Spanish]
Por medio de la presente NETGEAR Inc. declara que el Radiolan cumple con los
requisitos esenciales y cualesquiera otras disposiciones aplicables o exigibles de la
Directiva 1999/5/CE.
Ελληνική
[Greek]
ΜΕ ΤΗΝ ΠΑΡΟΥΣΑ NETGEAR Inc. ΔΗΛΩΝΕΙ ΟΤΙ Radiolan ΣΥΜΜΟΡΦΩΝΕΤΑΙ
ΠΡΟΣ ΤΙΣ ΟΥΣΙΩΔΕΙΣ ΑΠΑΙΤΗΣΕΙΣ ΚΑΙ ΤΙΣ ΛΟΙΠΕΣ ΣΧΕΤΙΚΕΣ ΔΙΑΤΑΞΕΙΣ ΤΗΣ
ΟΔΗΓΙΑΣ 1999/5/ΕΚ.
Français
[French]
Par la présente NETGEAR Inc. déclare que l'appareil Radiolan est conforme aux
exigences essentielles et aux autres dispositions pertinentes de la directive 1999/5/CE.
Italiano [Italian] Con la presente NETGEAR Inc. dichiara che questo Radiolan è conforme ai requisiti
essenziali ed alle altre disposizioni pertinenti stabilite dalla direttiva 1999/5/CE.
Latviski
[Latvian]
Ar šo NETGEAR Inc. deklarç, ka Radiolan atbilst Direktîvas 1999/5/EK bûtiskajâm prasîbâm
un citiem ar to saistîtajiem noteikumiem.

v2.0, April 2007
iv
FCC Requirements for Operation in the United States
FCC Information to User
This product does not contain any user serviceable components and is to be used with approved antennas only. Any
product changes or modifications will invalidate all applicable regulatory certifications and approvals
FCC Guidelines for Human Exposure
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment
should be installed and operated with minimum distance of 20 cm between the radiator and your body.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
Lietuviø
[Lithuanian]
Šiuo NETGEAR Inc. deklaruoja, kad šis Radiolan atitinka esminius reikalavimus ir kitas
1999/5/EB Direktyvos nuostatas.
Nederlands
[Dutch]
Hierbij verklaart NETGEAR Inc. dat het toestel Radiolan in overeenstemming is met de
essentiële eisen en de andere relevante bepalingen van richtlijn 1999/5/EG.
Malti [Maltese] Hawnhekk, NETGEAR Inc., jiddikjara li dan Radiolan jikkonforma mal-htigijiet
essenzjali u ma provvedimenti ohrajn relevanti li hemm fid-Dirrettiva 1999/5/EC.
Magyar
[Hungarian]
Alulírott, NETGEAR Inc. nyilatkozom, hogy a Radiolan megfelel a vonatkozó alapvetõ
követelményeknek és az 1999/5/EC irányelv egyéb elõírásainak.
Polski [Polish] Niniejszym NETGEAR Inc. oświadcza, że Radiolan jest zgodny z zasadniczymi
wymogami oraz pozostałymi stosownymi postanowieniami Dyrektywy 1999/5/EC.
Português
[Portuguese] NETGEAR Inc. declara que este Radiolan está conforme com os requisitos essenciais e outras disposições da Directiva 1999/5/CE.
Slovensko
[Slovenian]
NETGEAR Inc. izjavlja, da je ta Radiolan v skladu z bistvenimi zahtevami in ostalimi
relevantnimi določili direktive 1999/5/ES.
Slovensky
[Slovak] NETGEAR Inc. týmto vyhlasuje, _e Radiolan spĺňa základné po_iadavky a všetky príslušné ustanovenia Smernice 1999/5/ES.
Suomi
[Finnish] NETGEAR Inc. vakuuttaa täten että Radiolan tyyppinen laite on direktiivin 1999/5/EY oleellisten vaatimusten ja sitä koskevien direktiivin muiden ehtojen mukainen.
Svenska
[Swedish]
Härmed intygar NETGEAR Inc. att denna Radiolan står I överensstämmelse med de
väsentliga egenskapskrav och övriga relevanta bestämmelser som framgår av direktiv
1999/5/EG.
Íslenska
[Icelandic]
Hér með lýsir NETGEAR Inc. yfir því að Radiolan er í samræmi við grunnkröfur og aðrar
kröfur, sem gerðar eru í tilskipun 1999/5/EC.
Norsk
[Norwegian] NETGEAR Inc. erklærer herved at utstyret Radiolan er i samsvar med de grunnleggende krav og øvrige relevante krav i direktiv 1999/5/EF.

v2.0, April 2007
v
FCC Declaration Of Conformity
We NETGEAR, Inc., 4500 Great America Parkway, Santa Clara, CA 95054, declare under our sole responsibility that
the model GS748T GS748T Smart Switch complies with Part 15 of FCC Rules. Operation is subject to the following
two conditions:
• This device may not cause harmful interference, and
• This device must accept any interference received, including interference that may cause undesired operation.
FCC Radio Frequency Interference Warnings & Instructions
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment uses and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following methods:
• Reorient or relocate the receiving antenna
• Increase the separation between the equipment and the receiver
• Connect the equipment into an electrical outlet on a circuit different from that which the radio receiver is connected
• Consult the dealer or an experienced radio/TV technician for help.
Modifications made to the product, unless expressly approved by NETGEAR, Inc., could void the user's right to operate
the equipment.
D
Canadian Department of Communications Radio Interference Regulations
This digital apparatus (GS748T Smart Switch) does not exceed the Class B limits for radio-noise emissions from digital
apparatus as set out in the Radio Interference Regulations of the Canadian Department of Communications.
Canada ID: 4054A-WG111
FOR HOME OR OFFICE USE
Tested to Comply
with FCC Standards
PY306100037
GS748T Smart Switch

v2.0, April 2007
vi
Product and Publication Details
Model Number: GS748T
Publication Date: April 2007
Product Family: Smart Switch Series
Product Name: GS748T Smart Switch
Home or Business Product: Business
Language: English
Publication Part Number: 202-10233-01
Publication Version Number: 2.0

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v2.0, April 2007
Contents
GS748T Software User Manual
About This Manual
Who Should Use this Book ............................................................................................... xi
How to Use This Book ...................................................................................................... xi
Conventions, Formats and Scope ....................................................................................xii
HTML Manual Navigation ................................................................................................xiii
How to Print this Manual ..................................................................................................xiii
Revision History ...............................................................................................................xiv
Chapter 1
Switch Management Overview
Switch Management Interface ........................................................................................1-1
System Requirements ....................................................................................................1-2
Chapter 2
Getting Started—Smart Wizard Discovery
Network with DHCP server .............................................................................................2-1
Network without DHCP Server .......................................................................................2-2
Manually Assigning Network Parameters ................................................................2-3
NIC Setting on the Host that Accesses the GS748T Smart Switch .........................2-4
Web Access ....................................................................................................................2-5
Additional Utilities ...........................................................................................................2-5
Password Change ....................................................................................................2-5
Firmware Upgrade ...................................................................................................2-6
Exit ...........................................................................................................................2-7
Chapter 3
Basic Web Management
Starting Web Management .............................................................................................3-1
The NETGEAR Home Page and Switch Status .............................................................3-2
Description of Switch Status Parameters .......................................................................3-4

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System Functions ...........................................................................................................3-6
Firmware Menu ...............................................................................................................3-7
Managing System Files—Backup and Restore ........................................................3-7
Factory Reset ...........................................................................................................3-8
Resetting the System .....................................................................................................3-9
Logout .............................................................................................................................3-9
Chapter 4
Configuring the Switch
Using the Switch Configuration Utility .............................................................................4-1
Port Configuration ....................................................................................................4-2
Viewing Packet Statistics .........................................................................................4-3
Regulating Traffic Rates using Quality of Service Settings ......................................4-5
VLAN Page .............................................................................................................4-7
Creating Port Trunks to Increase Link Bandwidth .................................................. 4-11
Using a Sniffer Port to Monitor Traffic ....................................................................4-13
Jumbo Frame Support ...........................................................................................4-14
Controlling Per-port Packet Throughput .................................................................4-14
Storm Control (Dropping Traffic that is Flooding a Port) ........................................4-15
Using Spanning Tree Protocol to Prevent Path Loops ...........................................4-15
Enabling Switch Management using SNMP ...........................................................4-18
Controlling Switch Access by MAC Address and VLAN ID ....................................4-19
Using IGMP Snooping to Route Packets Based on Content .................................4-20
Filtering Unknown Multicast Packets .....................................................................4-20
Setting Up Static Multicast Groups .........................................................................4-21
Appendix A
Specifications and Default Values
GS748T Smart Switch Specifications ............................................................................ A-1
GS748T Smart Switch Features and Defaults ............................................................... A-2
Appendix B
Virtual Local Area Networks (VLANs)
IEEE 802.1Q VLANs .................................................................................................... B-2
Port-based VLANs ......................................................................................................... B-3
Port-based VLAN Example Configuration ............................................................... B-3
Results of this Configuration ................................................................................... B-4

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Appendix C
Network Cabling
Fast Ethernet Cable Guidelines ..................................................................................... C-1
Category 5 Cable ........................................................................................................... C-1
Category 5 Cable Specifications ............................................................................. C-2
Twisted Pair Cables ................................................................................................ C-2
Cabling .................................................................................................................... C-4
Near End Cross Talk (NEXT) .................................................................................. C-5
Patch Cables ........................................................................................................... C-6
RJ-45 Plug and RJ-45 Connectors ......................................................................... C-6
Conclusion .............................................................................................................. C-7

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About This Manual
The NETGEAR®GS748T Software User Manual describes how to install, configure, operate, and
troubleshoot the GS748T Smart Switch using its included software. This book describes the
software configuration procedures and explains the options available within those procedures.
Who Should Use this Book
The information in this manual is intended for readers with intermediate to advanced system
management skills.
This document was created primarily for the system administrator who wishes to install and
configure the GS748T switch in a network. It assumes that the reader has a general understanding
of switch platforms and a basic knowledge of Ethernet and networking concepts. To install this
switch, it is not necessary to understand and use all of its capabilities. Once basic configuration is
performed, it will function in a network using its remaining factory default parameters. However, a
greater level of configuration—anywhere from the basic up to the maximum possible—will give
your network more advantage of its features. The web interface simplifies this configuration at all
levels.
How to Use This Book
This document describes configuration commands for the GS748T switch software. The
commands can all be accessed from the Web interface.
•Chapter 1, “Switch Management Overview” describes what you can expect from Web
management and gives host system requirements.
•Chapter 2, “Getting Started—Smart Wizard Discovery” describes how to use the Smart
Wizard Discovery utility to set up your switch so that you can communicate with it.
•Chapter 4, “Configuring the Switch” describes the features that your switch offers and tells
you how to configure and activate them in your network.
•Appendix A, “Specifications and Default Values” gives GS748T switch specifications and
lists default feature values.
•Appendix B, “Virtual Local Area Networks (VLANs)” describes some concepts of VLANs

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•Appendix C, “Network Cabling” gives cabling requirements and describes some details of
port cabling connections.
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:
•Formats. This manual uses the following formats to highlight special messages:
Note: Refer to the product release notes for the GS748T switch Software application
level code. The release notes detail the platform specific functionality of the
Switching, SNMP, Config, and Management packages.
Note: Although this document applies to the NETGEAR® GS748T Smart Switch, some
of the illustrations used may show references to other switch model numbers.
Where such model numbers appear, the illustration concerned should be treated as
an example. The procedures described with these illustrations apply to each of the
family of Smart Switches.
Italics Emphasis, books, CDs, URL names
Bold User input
Fixed
width Screen text, file and server names, extensions, commands, IP addresses
Note: This format is used to highlight information of importance or special interest.
Tip: This format is used to highlight a procedure that will save time or resources.

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v2.0, April 2007
•Scope. This manual is written for the GS748T switch according to these specifications:
For more information about network, Internet, firewall, and VPN technologies, use the link to the
NETGEAR shown below.
HTML Manual Navigation
If an HTML version of this manual is provided, it includes the following:
• Buttons, and , for browsing forwards or backwards through the manual one page
at a time
• A button that displays the table of contents and an button. Double-click on a
link in the table of contents or index to navigate directly to where the topic is described in the
manual.
• A button to access the full NETGEAR, Inc. online knowledge base for the product
model.
• Links to PDF versions of the full manual and individual chapters.
How to Print this Manual
To print this manual, you can choose one of the following options, according to your needs.
•Printing a Page from HTML. Each page in the HTML version of the manual is dedicated to
a major topic. Select File →Print from the browser menu to print the page contents.
Warning: This is a warning of possible malfunction or damage to the equipment.
Product Version GS748T Smart Switch
Manual Publication Date April 2007
Note: Product updates are available from the NETGEAR, Inc. website at:
http://www.netgear.com/support/main.asp

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v2.0, April 2007
•Printing from PDF. 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.
Revision History
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.
Document
Part Number Date Version Number Description
202-10233-01 April 2007 2.0 Rate limiting feature documented.
202-10233-01 February
2007
1.0 GS748T Smart Switch documentation

1-1
v2.0, April 2007
Chapter 1
Switch Management Overview
Switch Management Interface
This section gives an overview of switch management, including the methods you can use to
manage your NETGEAR GS748T Smart Switch.
Your NETGEAR GS748T Smart Switch contains an embedded web server and management
software for managing and monitoring switch functions. This switch will function as a simple
switch without using the management software but its use enables you to configure more advanced
features and consequently improve switch efficiency and the overall performance of your network.
Web-Based Management enables you to monitor, configure, and control your switch remotely
using a common web browser, instead of having to use expensive and complicated SNMP
software products. Simply by using your web browser, you can monitor the performance of your
switch, and optimize its configuration for your network. Using your browser, for example, you can
set up VLANs, traffic priority, and configure port trunking.
In addition, NETGEAR provides the Smart Wizard Discovery Utility program with this product.
This program runs under Microsoft Windows XP or Windows 2000 and provides a “front end”
which discovers the switches on your network segment. When you power up your switch for the
first time, Smart Wizard Discovery enables you to configure its basic network parameters without
prior knowledge of IP address or subnet mask. Following such configuration, this program leads
you into the Web Management interface.
Table 1-1 shows some features of Smart Wizard Discovery and Web Management.

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1-2 Switch Management Overview
v2.0, April 2007
For a more detailed discussion of the Smart Wizard Discovery Utility Program, see. For a detailed
discussion of the Web Browser Interface, see Chapter 3, “Basic Web Management”.
System Requirements
The following hardware and software facilities are required to run the applications described in
this manual:
Network facilities:
• Ethernet network with or without DHCP server as appropriate (see Chapter 2, “Getting
Started—Smart Wizard Discovery”)
For running the Smart Wizard Discovery Utility:
• IBM type PC with CD drive; RAM size and disk specification is not critical
• OS software: Microsoft Windows Vista, Windows XP, or Windows 2000
• Switch to PC network cable: crossover? or straight connection via hub
• IBM type PC to run web management GUI; RAM and disk requirement is not critical
For running local or remote Web Management
• Desktop computer running Microsoft Internet Explorer 5.0 or later or Netscape Navigator 6.0
or later, or equivalent.
Table 1-1. Switch Management Methods
Management Method Features
Smart Wizard Discovery Utility
program
No IP address or subnet mask setup needed
Discover all switches on the network
User-friendly interface under Microsoft Windows
Firmware upgrade capability
Password change feature
Provides entry to web configuration of switch
Web browser Password protection
Ideal for configuring the switch remotely
Compatible with Internet Explorer and Netscape Navigator on any
platform
Extensive switch configuration possible
Configuration backup and restore

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Chapter 2
Getting Started—Smart Wizard Discovery
This section leads you through the steps necessary to begin managing your GS748T Smart Switch.
It covers how to install in a network that contains a DHCP server and one without DHCP.
Network with DHCP server
To install the switch in a network with a DHCP server, proceed as follows:
1. Connect the GS748T switch to a DHCP network.
2. Power on the switch by connecting its power cord.
3. Install the Smart Wizard Discovery Utility program on your computer.
4. Start the Smart Wizard Discovery utility.
5. Click Discover for the Smart Wizard Discovery to find your GS748T Smart Switch. You
should see a screen similar to that shown below.
Figure 2-1

GS748T Software User Manual
2-2 Getting Started—Smart Wizard Discovery
v2.0, April 2007
6. Make a note of the displayed IP address assigned by the DHCP server. You will need this
value to access the switch directly from a web browser (without using Smart Wizard
Discovery).
7. Select your switch by clicking on the line that shows it. Then click on the Web Access button.
The discovery utility displays a login window similar to the following:
Use your web browser to manage your switch. The default password is ‘password’.
Network without DHCP Server
This section describes how to set up your switch in a network without a DHCP server, and is
divided into the following tasks:
• Manually assign network parameters for your switch
• Configure the NIC settings on the host PC
• Log in to the web-based switch management utility
Figure 2-2

GS748T Software User Manual
Getting Started—Smart Wizard Discovery 2-3
v2.0, April 2007
Manually Assigning Network Parameters
If your network has no DHCP service, you must assign a static IP address to your switch. If you
choose, you can assign it a static IP address even if your network has DHCP service. Proceed as
follows:
1. Connect the GS748T Smart Switch to your existing network.
2. Power on the switch by plugging in the power cord (Default IP is 192.168.0.239).
3. Install the Smart Wizard Discovery Utility program on your computer
4. Start the Smart Wizard Discovery utility.
5. Click Discover for the Smart Wizard Discovery Utility to find your GS748T Smart Switch.
You should see a screen similar to that shown in Figure 2-1 on page 2-1.
6. Click on Configuration Setting. A screen similar to that shown below appears.
7. Choose Disable for DHCP.
8. Enter your chosen switch IP address, gateway IP address and subnet mask, and then type your
password and click “Set”. Please ensure that your PC and the GS748T Smart Switch are in the
same subnet. Make a note of these settings for later use.
Figure 2-3

GS748T Software User Manual
2-4 Getting Started—Smart Wizard Discovery
v2.0, April 2007
NIC Setting on the Host that Accesses the GS748T Smart Switch
The settings of your network interface card (NIC) under MS Windows OS are made with entries
into the Windows screen pages shown below. For comparison, the settings pages of the switch are
also shown although they do not appear in the Windows view.
You need Windows Administrator privilege to change these settings.
1. On your PC, access the MS Windows operating system TCP/IP Properties page as shown. In
MS Windows XP this is found in Control Panel > Network Connections > Local Area
Connection > General: Properties.
2. Select Internet Protocol (TCP/IP) and click on Properties.
3. Set IP address and subnet mask appropriately. The subnet mask value should be identical to
that set in the switch. The PC IP address must be different from that of the switch but lie in the
same subnet.
4. Click on the Web Access button to enable the management screens as described in the
following section
Figure 2-4