GS748T Gigabit Smart Switch H a rdwa re In stallation G u id e 350 East Plumeria Drive San Jose, CA 95134 USA August 2012 202-10725-02 v2.
GS748T Gigabit Smart Switch ©2012 by 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. NETGEAR, the NETGEAR logo, and Connect with Innovation are trademarks and/or registered trademarks of NETGEAR, Inc. and/or its subsidiaries in the United States and/or other countries.
Contents Chapter 1 Introduction Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Chapter 2 Physical Description GS748T Front-Panel and Back-Panel Configuration . . . . . . . . . . . . . . . . . 10 LED Designations. . . . . .
GS748T Gigabit Smart Switch Switch Integrity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Auto-Negotiation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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.
GS748T Gigabit Smart Switch 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.
GS748T Gigabit Smart Switch 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 802.3az (Energy Efficient Ethernet) • IEEE 802.
GS748T Gigabit Smart Switch Package Contents Figure 1 shows the package contents of the GS748T Gigabit Smart Switch. GS748T 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Reset Power 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45T 46T 47T 48T Combo Ports 47F 49 48F 50 LED Link/Act Mode Green=Link at 1000M Yellow=Link at 100/10M Blink=ACT SFP LED GREEN= 1000Mbps Blink=ACT Factory Default Figure 1.
2. Physical Description 2 This chapter describes the GS748T Gigabit Smart Switch hardware features.
GS748T Gigabit Smart Switch GS748T Front-Panel and Back-Panel Configuration The GS748T has 48 10/100/1000 Mbps copper ports, two 1000 Mbps SFP combo ports, and two dedicated 1000 Mbps SFP fiber ports. The SFP combo ports are shared with copper ports 47 and 48. If the SFP combo ports are in use, copper ports 47 and 48 are inactive. Each port is capable of sensing the line speed and negotiating the duplex mode with the link partner automatically. Figure 2 illustrates the front panel of the NETGEAR GS748T.
GS748T Gigabit Smart Switch LED Designations Port LEDs The following table describes the RJ-45, combo, and dedicated SFP port LED designations. There are two LEDs for each RJ-45 port. Each SFP port has its own indication LED. LED Designation Link/Speed/ACT LED mode for copper ports 1 to 48: • • • Link/ACT LED for SFP ports 47 to 50: • • • Off— No link established. Solid Green — A valid 1000 Mbps link is established. Blinking Green — The port is transmitting or receiving packets at 1000 Mbps.
GS748T Gigabit Smart Switch Device Hardware Interfaces RJ-45 Ports RJ-45 ports are autosensing 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 or shielded twisted-pair (UTP or STP) cable terminated with an 8-pin RJ-45 plug. To simplify the procedure for attaching devices, all RJ-45 ports support Auto Uplink.
GS748T Gigabit Smart Switch 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).
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3. Applications 3 Your GS748T Gigabit Smart Switch is designed to provide flexibility in configuring your network connections. It can be used as your only network traffic-distribution device or with 10 Mbps, 100 Mbps, and 1000 Mbps hubs and switches.
GS748T Gigabit Smart Switch Desktop Switching The GS748T 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 computer can provide 2000 Mbps throughput.
GS748T Gigabit Smart Switch Backbone Switching You can use the GS748T Gigabit Smart Switch as a backbone switch in a small network that gives users high-speed access to servers and other network devices.
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4. Installation 4 This chapter describes the installation procedures for your GS748T Gigabit Smart Switch.
GS748T Gigabit Smart Switch Step 1: Prepare the Site Before you install the switch, ensure the operating environment meets the site requirements in the following table. Characteristics Requirements Mounting • • 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. Power source Provide a power connection cord. Power specifications for the switch are shown in Appendix A.
GS748T Gigabit Smart Switch Step 2: Install the Switch The GS748T can be used on a flat surface or mounted in a standard network equipment rack. Install 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 and vibrations. They also provide ventilation space between stacked switches.
GS748T Gigabit Smart Switch Step 3: Check the Installation Before applying power to the switch, perform the following steps: • Inspect the equipment thoroughly. • Verify that all cables are installed correctly. • Check cable routing to make sure cables are not damaged or creating a safety hazard. • Ensure all equipment is mounted properly and securely.
GS748T Gigabit Smart Switch Step 4: Connect Devices to the Switch The following procedure describes how to connect computers to the switch’s RJ-45 ports. The GS748T contains Auto Uplink technology, which allows the attaching of devices using either straight-through or crossover cables.
GS748T Gigabit Smart Switch Step 5: Install an SFP Transceiver Module The following procedure describes how to install an optional SFP transceiver module into one of the SFP ports of the switch. Note: Contact your NETGEAR sales office to buy these modules. If you do not want to install an SFP module, skip this procedure. To install an SFP transceiver, insert the transceiver into the SFP port. Press firmly on the flange of the module to seat it securely into the connector.
GS748T Gigabit Smart Switch Step 6: Apply AC Power The GS748T Gigabit Smart Switch does not have an ON/OFF switch. Power must be controlled by the power cord connection. Before connecting the power cord, select an AC outlet that is not controlled by a wall switch, which can turn off power to the switch. After selecting an appropriate outlet, use the following procedure to apply AC power: 1. Connect the end of the power connection cable to the power receptacle on the back of the switch. 2.
GS748T Gigabit Smart Switch Step 7: Manage the Switch using a Web Browser or the Smart Control Center The GS748T contains software for viewing, changing, and monitoring the way it works. This management software is not required for the switch to work. The ports can be used without using the management software.
A. Troubleshooting A This chapter provides information about troubleshooting the NETGEAR Smart Switch.
GS748T Gigabit Smart Switch Troubleshooting Chart The following table lists symptoms, causes, and solutions of possible problems. Symptom Cause Solution Power LED is off. No power is received. Check the power cord connections and the connected device. Ensure all cables used are correct and comply with Ethernet specifications. Link LED is off or intermittent. Port connection is not working.
GS748T Gigabit Smart Switch Additional Troubleshooting Suggestions If the suggestions in Troubleshooting Chart do not resolve the problem, refer to the troubleshooting suggestions in this section. Network Adapter Cards Ensure the network adapter cards installed in the computers are in working condition and the software driver has been installed.
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B. Technical Specifications Network Protocol and Standards Compatibility IEEE 802.3 10BASE-T IEEE 802.3u 100BASE-TX IEEE 802.3ab 1000BASE-T IEEE 802.3z 1000BASE-X IEEE 802.3az (Energy Efficient Ethernet) IEEE 802.3x full-duplex flow control Management Windows 2000 + XP, Vista; Windows 7, Microsoft Explorer 7.0 or above IEEE 802.1Q VLAN IEEE 802.3ad Link Aggregation IEEE 802.1D Spanning Tree Protocol IEEE 802.1w Rapid Spanning Tree Protocol IEEE 802.1s MSTP IEEE 802.1X Port Security IEEE 802.
GS748T Gigabit Smart Switch Static LAGs Broadcast Storm Recovery RMON 1,2,3,9 Static L2 Multicast Filtering Voice VLAN Protected Ports DHCP Filtering Cable Test Syslog (RFC 3164) Persistent log supported Port Locking Denial of Service Protection (control plane) Denial of Service Protection (data plane) TACACS+ RADIUS EAPol Forwarding BPDU Flooding Auto VoIP Auto Video Auto DoS ACL Wizard Management Security Smart Control Center Discovery Static Routing Boot code update Password management IPv6 management T
GS748T Gigabit Smart Switch Standard L2 MIBs support User ID configuration Authentication login lists IPv4 and IPv6 DiffServ MAC, IPv4 and IPv6 ACL Dual Image Support Interface 48 RJ-45 connectors for 10BASE-T, 100BASE-TX, and 1000BASE-T (Auto Uplink™ on all ports) Two SFP combo ports for SFP modules Two dedicated SFP ports for SFP modules LEDs Per RJ-45 port: Speed/Link/Activity Per SFP port: Speed/Link/Activity Per device: Power Performance Specifications Forwarding modes: Store-and-forward Bandwidth:
GS748T Gigabit Smart Switch Storage temperature: –20°C to 70°C (–4°F to 158°F) Storage humidity: 5% to 95% maximum relative humidity, noncondensing Electromagnetic Emissions CE Class A, including EN 55022 (CISPR 22), EN 55024, and EN 50082-1 FCC Part 15 Class A VCCI Class A C-Tick KC Safety UL/cUL CE EN 60950-1 34
C. Notification of Compliance NETG EA R Wire d Products C 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.
GS748T Gigabit Smart Switch • 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.
Index Numerics I 1U 7 8-pin 12 IEEE 802.
GS748T Gigabit Smart Switch System LEDs 11 T technical support 2 Temperature 20 trademarks 2 Traffic Control 6 Troubleshooting Chart 28 U User Intervention 12 User’s Manual 8 UTP 23 V Ventilation 20 VLAN 6, 26 W Web-based Graphical User Interface 6 38
