NETGEAR GS748TNA User manual

202-10331-01
October 2007
NETGEAR, Inc.
4500 Great America Parkway
Santa Clara, CA 95054 USA
Smart Switch Software
User Manual GS748T

ii
v1.0, October 2007
© 2007 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.
October 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.

v1.0, October 2007
iii
Product and Publication Details
Model Number: GS748T
Publication Date: October 2007
Product Family: Smart Switch Series
Product Name: GS748T Smart Switch
Home or Business Product: Business
Language: English
Publication Part Number: 202-10331-01
Publication Version Number: 1.0

v1.0, October 2007
iv

Contents v
v1.0, October 2007
Contents
Smart Switch Software User Manual GS748T
About This Manual
Who Should Use this Book ............................................................................................... ix
How to Use This Book ...................................................................................................... ix
Conventions, Formats and Scope .....................................................................................x
HTML Manual Navigation ................................................................................................. xi
How to Print this Manual ...................................................................................................xii
Revision History ................................................................................................................xii
Chapter 1
Switch Management Overview
Switch Management Interface ........................................................................................1-1
System Requirements ....................................................................................................1-2
Chapter 2
Using the Smartwizard Discovery Utility
Network with DHCP server .............................................................................................2-1
Network without DHCP Server .......................................................................................2-2
Manually Assigning Network Parameters ................................................................2-3
Configuring Your NIC Settings .................................................................................2-4
Smartwizard Utilities .......................................................................................................2-5
Password Change ....................................................................................................2-5
Firmware Upgrade ...................................................................................................2-5
Exit ...........................................................................................................................2-7
Chapter 3
Basic Web Management
Accessing the Switch Management Home Screen .........................................................3-2
System Information Settings ....................................................................................3-3
IP Configuration .......................................................................................................3-4
Changing Your Password ...............................................................................................3-4

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Managing Your System Configuration ............................................................................3-5
Saving and Restoring Your Configuration ................................................................3-5
Performing a Factory Reset or a Device Reboot .....................................................3-6
Chapter 4
Configuring the Switch
Configuring Ports ............................................................................................................4-1
Configuring the Link Aggregation Group (LAG) ..............................................................4-3
Setting Up SNMP ...........................................................................................................4-5
Configuring and Creating VLANs ...................................................................................4-7
Adding and Configuring IEEE 802.1Q VLAN Groups ..............................................4-8
Configuring Port-Based VLANs ..............................................................................4-10
Selecting a Management VLAN .............................................................................4-11
Enabling Spanning Tree Protocol .................................................................................4-11
Establishing Multicast Groups ......................................................................................4-14
IGMP Snooping ......................................................................................................4-14
Multicast Group Configuration ................................................................................4-14
Multicast Group Membership .................................................................................4-15
Enabling Jumbo Frames ...............................................................................................4-16
Setting Rate Limits .......................................................................................................4-17
Setting QoS Global Configuration ................................................................................4-17
IEEE 802.1p-Based QoS .......................................................................................4-18
Differentiated Services Code Point (DSCP)-based QoS ........................................4-19
Enabling Storm Control .................................................................................................4-20
Configuring the IP Access List ......................................................................................4-22
Controlling Switch Access by MAC Address and VLAN ID ..........................................4-22
Setting up Mirroring or “Sniffer Ports” ...........................................................................4-23
Viewing Packet Statistics ..............................................................................................4-24
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
802.1Q Example .................................................................................................... B-2

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Port-based VLANs ......................................................................................................... B-3
Port-based VLAN Example Configuration ............................................................... B-3
VLAN Configuration Results ................................................................................... B-4
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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ix
v1.0, October 2007
About This Manual
The NETGEAR®Smart Switch Software User Manual GS748T 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, “Using the Smartwizard Discovery Utility” describes how to use the Smartwizard
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

Smart Switch Software User Manual GS748T
xAbout This Manual
v1.0, October 2007
•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.

Smart Switch Software User Manual GS748T
About This Manual xi
v1.0, October 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.
Warning: This is a warning of possible malfunction or damage to the equipment.
Danger: This is a safety warning. Failure to take heed of this notice may result in
personal injury or death.
Product Version GS748T Smart Switch
Manual Publication Date October 2007
Note: Product updates are available from the NETGEAR, Inc. website at:
http://www.netgear.com/support/GS748T.asp

Smart Switch Software User Manual GS748T
xii About This Manual
v1.0, October 2007
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.
•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
202-10233-02 February 2007 1.0 Document created
202-10331-01 October 2007 1.0 GUI update

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v1.0, October 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 Smartwizard 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, Smartwizard 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 Smartwizard Discovery and Web Management.

Smart Switch Software User Manual GS748T
1-2 Switch Management Overview
v1.0, October 2007
For a more detailed discussion of the Smartwizard 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, “Using the
Smartwizard Discovery Utility”)
For running the Smartwizard 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
• Ethernet cable: Straight or crossover
• 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
Smartwizard 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
Using the Smartwizard Discovery Utility
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 Smartwizard Discovery Utility program on your computer.
4. Start the Smartwizard Discovery utility.
5. Click Discover for the Smartwizard Discovery to find your GS748T Smart Switch. You
should see a screen similar to that shown below.
Figure 2-1

Smart Switch Software User Manual GS748T
2-2 Using the Smartwizard Discovery Utility
v1.0, October 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 Smartwizard
Discovery).
7. Select your switch by clicking on the line that displays the switch address. Then click Web
Access. The discovery utility displays a login window similar to the following:
8. Enter the default password which is password. Then, use your web browser to manage your
switch.
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 assigning network parameters for your switch.
• Configuring the Network Interface Card (NIC) settings on the host PC.
• Logging into the web-based switch management utility.
Figure 2-2

Smart Switch Software User Manual GS748T
Using the Smartwizard Discovery Utility 2-3
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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 a static IP address to the switch even if your network has DHCP service.
To manually assign a static IP address to your switch:
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 Smartwizard Discovery Utility program on your computer
4. Start the Smartwizard Discovery utility.
5. Click Discover for the Smartwizard 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 the Disable radio button 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

Smart Switch Software User Manual GS748T
2-4 Using the Smartwizard Discovery Utility
v1.0, October 2007
Configuring Your NIC Settings
The settings of your NIC on the host that accesses the GS748T Smart Switch, under MS Windows
OS, are made with entries into the Windows screens shown below. For comparison, the settings of
the switch are also shown although they do not appear in the Windows view.
To modify your NIC settings (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 the appropriate IP address and subnet mask. 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 Web Access. The Login screen will display.
5. Enter the default password password. Then, click Login to proceed to management of the
switch covered in Chapter 3, “Basic Web Management”.
Figure 2-4

Smart Switch Software User Manual GS748T
Using the Smartwizard Discovery Utility 2-5
v1.0, October 2007
Smartwizard Utilities
Alternatively, from the Smartwizard main page of Figure 2-1 you can access the following
features:
• Password Change
• Firmware Upgrade
Password Change
You can set a new password of up to 20 ASCII characters.
1. On the Smartwizard Utility screen, click Password Change. The Password Change screen.
appears. You can set a new password. In this process, you are required to enter the old
password and to confirm the new one.
2. Click Set to enable the new password.
Firmware Upgrade
The application software for the GS748T switch is upgradeable, enabling your switch to take
advantage of improvements and additional features as they become available. The upgrade
procedure and the required equipment are described as follows. This procedure assumes that you
Figure 2-5

Smart Switch Software User Manual GS748T
2-6 Using the Smartwizard Discovery Utility
v1.0, October 2007
have downloaded or otherwise obtained the firmware upgrade and that you have it available as a
binary file on your computer. This procedure uses the TFTP protocol to implement the transfer
from computer to switch.
To upgrade your firmware:
1. After selecting the switch you want to upgrade, click Firmware Upgrade (see Figure 2-1).
The following screen will display:
2. Enter the following values into the appropriate places in the form
•Product Assigned Firmware: The location of the new firmware file. You can click
Browse to locate the file. For example:
tftp://{tftp address}/{file name}
•Upgrade Password: Enter your password; the default password is password. Click
Apply.
3. Click Start Upgrade to begin loading the upgrade. The system software is automatically
loaded to all stacking members. When the process is complete, the switch automatically
reboots.
Figure 2-6