NETGEAR GS748Tv4 Manual

February 2011
202-10725-01
v1.0
350 East Plumeria Drive
San Jose, CA 95134
USA
GS748T Smart Switch
Hardware Installation Guide

2 |
GS748T Smart Switch Hardware Installation Guide
©2011 NETGEAR, Inc. All rights reserved.
No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated
into any language in any form or by any means without the written permission of NETGEAR, Inc.
Technical Support
Thank you for choosing NETGEAR. To register your product, get the latest product updates, or get support online,
visit us at http://support.netgear.com.
Phone (US & Canada only): 1-888-NETGEAR
Phone (Other Countries): See Support information card.
Trademarks
NETGEAR, the NETGEAR logo, ReadyNAS, ProSafe, Auto Uplink, X-RAID2, and NeoTV are trademarks or
registered trademarks of NETGEAR, Inc. Microsoft, Windows, Windows NT, and Vista are registered trademarks
of Microsoft Corporation. Other brand and product names are registered trademarks or trademarks of their
respective holders.
Statement of Conditions
To improve 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.
Revision History
Publication Part Number Version Publish Date Comments
202-10725-01 v1.0 February 2011 Document Created

Table of Contents |3
Table of Contents
Chapter 1 Introduction
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Chapter 2 Physical Description
GS748T Front-Panel and Back-Panel Configuration. . . . . . . . . . . . . . . . . 11
LED Designations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
System LED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Device Hardware Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
RJ-45 Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SFP Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Reset Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Factory Defaults Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Chapter 3 Applications
Desktop Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Backbone Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Chapter 4 Installation
Step 1: Preparing the Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Step 2: Installing the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Installing the Switch on a Flat Surface. . . . . . . . . . . . . . . . . . . . . . . . . . 22
Installing the Switch in a Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Step 3: Checking the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Step 4: Connecting Devices to the Switch. . . . . . . . . . . . . . . . . . . . . . . . . 24
Step 5: Installing an SFP Transceiver Module . . . . . . . . . . . . . . . . . . . . . 25
Step 6: Applying AC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Step 7: Managing the Switch using a Web Browser or the PC Utility . . . . 27

GS748T Smart Switch Hardware Installation Guide
4 | Table of Contents
Appendix A Troubleshooting
Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Additional Troubleshooting Suggestions . . . . . . . . . . . . . . . . . . . . . . . . . .31
Network Adapter Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Switch Integrity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Auto-Negotiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Appendix B Technical Specifications
Appendix C Notification of Compliance
Index

GS748T Smart Switch Hardware Installation Guide
Table of Contents |5

Chapter 1: Introduction |6
1. Introduction 1
Congratulations on the purchase of your NETGEAR®ProSafeTM GS748T Gigabit Smart
Switch! Your GS748T switch is a state-of-the-art, high-performance, IEEE-compliant network
solution designed for users who require a large number of ports and want the power of
Gigabit connectivity to eliminate bottlenecks, boost performance, and increase productivity.
There are 48 twisted-paired ports with 4 SFP GBIC slots (two SFP slots are combo ports) on
the front panel of the switch which support non-stop 10/100/1000 networks. To simplify
installation, the switch is shipped ready for use out of the box.
The GS748T Smart Switch Hardware Installation Guide describes how to install and power
on the GS748T. The information in this manual is intended for readers with intermediate
computer and Internet skills.
This chapter serves as an introduction to the GS748T and provides the following information:
• Overview
• Features
• Package Contents

Chapter 1: Introduction |7
GS748T Smart Switch Hardware Installation Guide
Overview
The NETGEAR GS748T Gigabit Smart Switch provides 48 twisted-pair ports with four built-in
Small Form Factor (SFP) GBIC slots that support nonstop 1000M fiber networks.
Using these Gigabit slots, you can create high-speed connections to a server or network
backbone. For example, you can:
• Connect switches to each other with high-speed links
• Link to high-speed servers
• Provide 10/100/1000M copper and 1000M fiber connectivity
The NETGEAR GS748T Gigabit 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.
The NETGEAR GS748T Gigabit Smart Switch can be free standing or rack mounted in a
wiring closet or equipment room. 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.

8| Chapter 1: Introduction
GS748T Smart Switch Hardware Installation Guide
Features
The following list identifies the key features of the GS748T:
• Forty-eight 10/100/1000 Mbps auto-sensing Gigabit-Ethernet switching ports.
• Two SFP combo ports.
• Two dedicated 1000M SFP fiber ports.
• Full NETGEAR Smart Switch functionality.
• Full compatibility with IEEE standards:
• IEEE 802.3i (10BASE-T)
• IEEE 802.3u (100BASE-TX)
• IEEE 802.3ab (1000BASE-T)
• IEEE 802.3z (1000BASE-x)
• IEEE 802.3x (Full-duplex flow control)
• Autosensing 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 8K 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 and frame drops.
• Half-duplex backpressure control.
• Per port LEDs and power LED.
• Internal power supply.
• Standard NETGEAR 7xx series chassis.
• NETGEAR Green product series power-saving features:
• Automatic power consumption adjustment based on the RJ-45 cable length.
• Per port automatic power down when the port link is down.

Chapter 1: Introduction |9
GS748T Smart Switch Hardware Installation Guide
Package Contents
Figure 1 shows the package contents of the GS748T Gigabit Smart Switch.
Figure 1. Package Contents
Verify that the package contains the following:
• GS748T Gigabit Smart Switch
• Rubber footpads for tabletop installation
• Rackmounting kits
• Power cord
• Installation guide
• Smart Switch Resource CD with NETGEAR Smart Control Center and User’s Manual
If any item is missing or damaged, contact the place of purchase immediately.
LED Link/Act Mode Green=Link at 1000M Yellow=Link at 100/10M Blink=ACT
Power
Reset Fact ory
Default
12345678910 11 12 221314 15 16 17 1819 20 21 2324 3425 26 27 2829 30313233 35363738 39 40 41 42 4344
46T
45T
48F
47F
50
49
Combo
Ports
GS748T
SFP LED
GREEN=
1000Mbps
Blink=ACT
48T
47T

Chapter 2: Physical Description |10
2. Physical Description 2
This chapter describes the GS748T Gigabit Smart Switch hardware features. Topics include:
• GS748T Front-Panel and Back-Panel Configuration
• LED Designations
• Device Hardware Interfaces