NETGEAR Switch GSM7248R User Manual

Managed Layer 2  
Switches GSM7224R  
and GSM7248R  
Hardware Installation  
Guide  
NETGEAR, Inc.  
4500 Great America Parkway  
Santa Clara, CA 95054 USA  
202-10351-01  
November 2007  
 
Federal Communications Commission (FCC) Compliance Notice: Radio Frequency Notice  
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:  
This device may not cause harmful interference.  
This device must accept any interference received, including interference that may cause undesired operation.  
Note: This equipment has been tested and found to comply with the limits for a Class A 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 generates, 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 measures:  
Reorient or relocate the receiving antenna.  
Increase the separation between the equipment and receiver.  
Connect the equipment into an outlet on a circuit different from the one to which the receiver is connected.  
Consult the dealer or an experienced radio/TV technician for help.  
Canadian Department of Communications Radio Interference Regulations  
This digital apparatus (NETGEAR ProSafe™ 24-Port L2 Managed Switch with Static Routing GSM7224R) does not  
exceed the Class A limits for radio noise emissions from digital apparatus as set out in the Radio Interference  
Regulations of the Canadian Department of Communications.  
This digital apparatus (NETGEAR ProSafe™ 48-Port L2 Managed Switch with Static Routing GSM7248R) does not  
exceed the Class A limits for radio noise emissions from digital apparatus as set out in the Radio Interference  
Regulations of the Canadian Department of Communications.  
Règlement sur le brouillage radioélectrique du ministère des Communications  
Cet appareil numérique (NETGEAR ProSafe™ 24-Port L2 Managed Switch with Static Routing GSM7224R) respecte  
les limites de bruits radioélectriques visant les appareils numériques de classe A prescrites dans le Règlement sur le  
brouillage radioélectrique du ministère des Communications du Canada.  
Cet appareil numérique (NETGEAR ProSafe™ 48-Port L2 Managed Switch with Static Routing GSM7248R) respecte  
les limites de bruits radioélectriques visant les appareils numériques de classe A prescrites dans le Règlement sur le  
brouillage radioélectrique du ministère des Communications du Canada.  
EN 55 022 Declaration of Conformance  
This is to certify that the NETGEAR ProSafe™ 24-Port L2 Managed Switch with Static Routing GSM7224R is shielded  
against the generation of radio interference in accordance with the application of Council Directive 89/336/EEC, Article  
4a. Conformity is declared by the application of EN 55024 Class A (CISPR 22).  
EN 55 022 and EN 55 024 Statements  
This is to certify that the NETGEAR ProSafe™ 48-Port L2 Managed Switch with Static Routing GSM7248R is shielded  
against the generation of radio interference in accordance with the application of Council Directive 89/336/EEC, Article  
4a. Conformity is declared by the application of EN 55024 Class A (CISPR 22).  
This is to certify that the NETGEAR ProSafe™ 24-Port L2 Managed Switch with Static Routing GSM7224R is shielded  
against the generation of radio interference in accordance with the application of Council Directive 89/336/EEC, Article  
4a. Conformity is declared by the application of EN 55 022 Class A (CISPR 22) and EN 55 024.  
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This is to certify that the NETGEAR ProSafe™ 48-Port L2 Managed Switch with Static Routing GSM7248R is shielded  
against the generation of radio interference in accordance with the application of Council Directive 89/336/EEC, Article  
4a. Conformity is declared by the application of EN 55 022 Class A (CISPR 22) and EN 55 024.  
Warning: This is a Class A product. In a domestic environment, this product may cause  
radio interference, in which case the user may be required to take appropriate  
measures.  
Product and Publication Details  
Model Number:  
Publication Date:  
Product Family:  
Product Name:  
GSM7224R and GSM7248R  
November 2007  
managed switch  
ProSafe™ 24-Port L2 Managed Switch with Static Routing GSM7224R  
ProSafe™ 48-Port L2 Managed Switch with Static Routing GSM7248R  
Home or Business Product:  
Language:  
Business  
English  
Publication Part Number:  
202-10351-01  
Publication Version Number: 1.0  
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Contents  
Chapter 1  
Introduction  
Chapter 2  
Hardware Installation  
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About This Manual  
®
The NETGEAR Managed Layer 2 Switches GSM7224R and GSM7248R Hardware Installation  
Guide describes how to install, configure, and troubleshoot the ProSafe™ 24-Port L2 Managed  
Switch with Static Routing GSM7224R and the ProSafe™ 48-Port L2 Managed Switch with Static  
Routing GSM7248R. 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  
URL links  
italic  
Formats. This manual uses the following formats to highlight special messages:  
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.  
Warning: Ignoring this type of note might result in a malfunction or damage to the  
equipment.  
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Scope. This manual is written for the Managed Layer 2 Switch according to these  
specifications:  
Product Version  
ProSafe™ 24-Port L2 Managed Switch with Static Routing  
GSM7224R  
ProSafe™ 48-Port L2 Managed Switch with Static Routing  
GSM7248R  
Manual Publication Date  
November 2007  
For more information about network, Internet, firewall, and VPN technologies, see the links to the  
Note: Product updates are available on the NETGEAR, Inc. website at  
How to Use This Manual  
The HTML version of this manual includes the following:  
Buttons,  
at a time.  
and  
, for browsing forward or backward through the manual one page  
A
button that displays the table of contents and a  
button that displays an index.  
Double-click a link in the table of contents or index to navigate directly to where the topic is  
described in the manual.  
A
model.  
button to access the full NETGEAR, Inc. online knowledge base for the product  
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.  
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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 website at  
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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Chapter 1  
Introduction  
The NETGEAR managed switch is a state-of-the-art, high-performance, IEEE-compliant network  
solution. It includes powerful management features that you can use to eliminate bottlenecks,  
boost performance, and increase productivity.  
This guide describes hardware installation and basic troubleshooting for the ProSafe™ 24-Port L2  
Managed Switch with Static Routing GSM7224R and ProSafe™ 48-Port L2 Managed Switch with  
Static Routing GSM7248R.  
These switches can be free standing, or rack mounted in a wiring closet or an equipment room. For  
information about features for these products, see the NETGEAR website at  
GSM7224R Front Panel and LEDs  
The following figure shows the front panel of the GSM7224R. The front panel contains LEDs, a  
RST (reset) button, a USB port, RJ-45 jacks, and copper/fiber combo ports.  
LEDs  
USB port  
Reset  
button  
RJ-45 jacks  
Copper/fiber  
combo ports  
Figure 1-1  
For information about the LEDs on the front panel of the switch, see “Interpreting the LEDs” on  
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GSM7224R Rear Panel  
The rear panel has a console port, a redundant power supply connector, and a standard AC power  
receptacle for the supplied power cord.  
Power receptacle  
Console  
Redundant  
power supply  
connector  
Figure 1-2  
GSM7248R Front Panel and LEDs  
The following figure shows the front panel of the GSM7248R. The front panel contains LEDs, a  
USB port, a RST (reset) button, RJ-45 jacks, and copper/fiber combo ports.  
LEDs  
USB port  
Reset  
button  
RJ-45 jacks  
Copper/fiber  
combo ports  
Figure 1-3  
For information about the LEDs on the front panel of the switch, see “Interpreting the LEDs” on  
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GSM7248R Rear Panel  
The rear panel has a console port, a redundant power supply connector, and a standard AC power  
receptacle for the supplied power cord.  
Console  
Redundant  
power supply  
connector  
Power receptacle  
Figure 1-4  
Interpreting the LEDs  
The following table describes the LEDs on the front panel of the switch.  
Table 1-1. LED Descriptions  
LED  
Description  
PWR (power)  
Solid green. Power is supplied and the switch is working.  
Blinking green. Power-on self-test (POST) in progress.  
Solid yellow. System is booting up.  
Blinking yellow. POST, CPU, or power supply has failed  
Off. Power is disconnected.  
FAN  
Yellow. The fan has failed.  
Off. The fan is operating normally.  
RPS  
(redundant  
power supply)  
Solid green. The redundant power supply is connected (and using internal power).  
Solid yellow. The switch internal power has failed or been disconnected, but the  
redundant power supply is providing power to the switch.  
Blinking yellow. The redundant power supply unit is present, but the power has failed.  
Off. The redundant power supply is disconnected or not present.  
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Table 1-1. LED Descriptions (continued)  
LED  
Description  
10/100/1000M  
Ports  
(1 LED per port)  
SPD/Link/ACT LED  
Off. No link is established on the port.  
Solid green. A valid 1000 Mbps link is established on the port.  
Blinking green. The port is sending or receiving packets at 1000 Mbps.  
Solid yellow. A valid 100 or 10 Mbps link is established on the port.  
Blinking yellow. The port is sending or receiving packets at 10 or 100 Mbps.  
Note: If port 21–24 for the GSM7224R or port 45–48 for GSM7248R media is changed  
to SFP, the RJ-45 LEDs changes to Off status.  
SFP Ports  
SPD/Link/ACT LED  
(1 LED per port) Off. No SFP module link is established on the port.  
Solid green. A valid 1000 Mbps SFP module link is established on the port.  
Blinking green. The port is sending or receiving packets at 1000 Mbps.  
Solid Yellow. A valid 100Mbps SFP module link is established on the port.  
Blinking Yellow. The port is sending or receiving packets at 100 Mbps.  
Note: If port 21–24 for the GSM7224R or port 45–48 media for GSM7248R is changed to  
copper, the SFP LEDs change to Off status.  
Safety Instructions  
Use the following safety guidelines to ensure your own personal safety and to help protect your  
system from potential damage.  
To reduce the risk of bodily injury, electrical shock, fire, and damage to the equipment, observe the  
following precautions:  
Observe and follow service markings.  
Do not service any product except as explained in your system documentation.  
Opening or removing covers that are marked with the triangular symbol with a lightning  
bolt can expose you to electrical shock. Only a trained service technician should service  
components inside these compartments.  
If any of the following conditions occur, unplug the product from the electrical outlet and  
replace the part, or contact your trained service provider:  
The power cable, extension cable, or plug is damaged.  
An object has fallen into the product.  
The product has been exposed to water.  
The product has been dropped or damaged.  
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The product does not operate correctly when you follow the operating instructions.  
Keep your system away from radiators and heat sources. Also, do not block cooling vents.  
Do not spill food or liquids on your system components, and never operate the product in a wet  
environment. If the system gets wet, contact technical support or your trained service provider.  
Do not push any objects into the openings of your system. Doing so can cause fire or electric  
shock by shorting out interior components.  
Use the product only with approved equipment.  
Allow the product to cool before removing covers or touching internal components.  
Operate the product only from the type of external power source indicated on the electrical  
ratings label. If you are not sure of the type of power source required, consult your service  
provider or local power company.  
To help avoid damaging your system, be sure that the voltage selection switch (if provided) on  
the power supply is set to match the power available at your location:  
115 volts (V), 60 hertz (Hz) in most of North and South America and some Far Eastern  
countries such as South Korea and Taiwan  
100 V, 50 Hz in eastern Japan and 100 V, 60 Hz in western Japan  
230 V, 50 Hz in most of Europe, the Middle East, and the Far East  
Also, be sure that attached devices are electrically rated to operate with the power available in  
your location.  
Use only approved power cables. If you have not been provided with a power cable for your  
system or for any AC-powered option intended for your system, purchase a power cable that is  
approved for use in your country. The power cable must be rated for the product and for the  
voltage and current marked on the product’s electrical ratings label. The voltage and current  
rating of the cable should be greater than the ratings marked on the product.  
To help prevent electric shock, plug the system and peripheral power cables into properly  
grounded electrical outlets.  
The peripheral power cables are equipped with three-prong plugs to help ensure proper  
grounding. Do not use adapter plugs or remove the grounding prong from a cable. If you must  
use an extension cable, use a three-wire cable with properly grounded plugs.  
Observe extension cable and power strip ratings. Make sure that the total ampere rating of all  
products plugged into the extension cable or power strip does not exceed 80 percent of the  
ampere ratings limit for the extension cable or power strip.  
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To help protect your system from sudden, transient increases and decreases in electrical power,  
use a surge suppressor, line conditioner, or uninterruptible power supply (UPS).  
Position system cables and power cables carefully; route cables so that they cannot be stepped  
on or tripped over. Be sure that nothing rests on any cables.  
Do not modify power cables or plugs. Consult a licensed electrician or your power company  
for site modifications.  
Always follow your local and national wiring rules.  
Move products with care; ensure that all casters and stabilizers are firmly connected to the  
system. Avoid sudden stops and uneven surfaces.  
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Chapter 2  
Hardware Installation  
This chapter explains how to install the hardware for the ProSafe™ 24-Port L2 Managed Switch  
with Static Routing GSM7224R and the ProSafe™ 48-Port L2 Managed Switch with Static  
Routing GSM7248R.  
Package Contents  
The switch is packed and shipped separately. The package contains the following items:  
Managed Layer 2 Switch with preinstalled software  
Power adapter cord  
Rubber footpads for tabletop installation  
Rubber caps for the SFP sockets  
Rack-mounting kit  
Null-modem serial cable (RS-232) with 9-pin connectors  
Resource CD: The CD contains  
Configuration software  
Documentation including the Managed Layer 2 Switches 7200R Series CLI Reference  
Manual Version 7.0, the NETGEAR 7000 Series Managed Switch Administration Guide  
Version 6.0, the NETGEAR Installation Guide 7000 Series Managed Switch (7200R,  
7300S), and this guide  
Warranty and Support card  
Installation guide  
ProSafe NMS100 Network Management System 30-day trial CD-ROM  
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Protecting Against Electrostatic Discharge  
Warning: Static electricity can harm delicate components inside your system. To  
prevent static damage, discharge static electricity from your body before you  
touch any of the electronic components, such as the microprocessor. You can  
do so by periodically touching an unpainted metal surface on the switch.  
You can also take the following steps to prevent damage from electrostatic discharge (ESD):  
1. When unpacking a static-sensitive component from its shipping carton, leave it in the antistatic  
package until you are ready to install it. Just before unwrapping the antistatic package,  
discharge static electricity from your body.  
2. Before moving a sensitive component, place it in an antistatic container or package.  
3. Handle all sensitive components in a static-safe area. If possible, use antistatic floor pads,  
workbench pads, and an antistatic grounding strap.  
Unpacking the Hardware  
Check the contents of the boxes to make sure that all items are present before beginning the  
installation.  
1. Place the container on a clean flat surface, and cut all straps securing the container.  
2. Unpack the hardware from the boxes.  
Carefully remove the hardware, and place it on a secure and clean surface. See “Selecting a  
3. Remove all packing material.  
4. Make sure that all items are present. See “Package Contents” on page 2-1.  
Note: If any item is found missing or damaged, contact your local NETGEAR  
reseller for replacement.  
5. Inspect the products and accessories for damage. Report any damage immediately.  
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Installation  
Install the equipment in the following sequence, as presented in this chapter:  
1. Select a location. See the following section, “Selecting a Location.”  
2. Install the switch. See “Installing the Switch” on page 2-4.  
3. Check the installation. See “Checking the Installation” on page 2-5.  
4. Apply power and check the LEDs. See “Connecting to Power and Check the LEDs” on  
Selecting a Location  
The switch can be mounted in a standard 19-inch (48.26-centimeter) rack, wall mounted, or left  
freestanding (placed on a tabletop). The site where you install the switch can greatly affect its  
performance. Before installing the switch or switches, make sure that the chosen installation  
location meets the following site requirements.  
Table 2-1. Site Requirements for Switch Location  
Requirements  
Mounting  
Desktop Installations. Provide a flat table or shelf surface.  
Rack-mount Installations. Use a 19-inch (48.3-centimeter) EIA standard  
equipment rack that is grounded and physically secure, and the rack-mounting kit  
supplied with your switch.  
Put the switch in a position that lets you access the front panel RJ-45 ports, view the  
front panel LEDs, and access the rear panel power connector.  
Access  
Provide a power source within 6 feet (1.8 meters) of the installation location. Power  
specifications for the switch are shown in Appendix A, “Default Settings and  
Technical Specifications.” Be sure that the AC outlet is not controlled by a wall switch,  
which can accidentally turn off power to the outlet and the switch.  
Power source  
Environment  
Temperature  
Install the switch in a site free from strong electromagnetic field generators (such as  
motors), vibration, dust, and direct exposure to sunlight.  
The ambient switch operating temperature range is 0º to 55ºC (32º and 131ºF). Keep  
the switch away from heat sources such as direct sunlight, warm-air exhausts, hot-air  
vents, and heaters.  
Operating humidity  
Install the switch in a dry area with a maximum relative humidity of 90%,  
noncondensing.  
Hardware Installation  
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Table 2-1. Site Requirements for Switch Location (continued)  
Requirements  
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 that  
there is adequate airflow in the room or wiring closet where you will install the switch.  
Cabling  
Route the cable to avoid sources of electrical noise such as radio transmitters,  
broadcast amplifiers, power lines, and fluorescent lighting fixtures.  
Installing the Switch  
You can install the switch on a flat surface or in a standard 19-inch rack.  
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 and vibrations.  
Installing the Switch in a Rack  
To install the switch in a rack, you need the 19-inch rack-mounting kit supplied with your switch.  
1. Attach the supplied mounting brackets to the side of the switch.  
2. Use the provided Phillips head screws to fasten the brackets to the sides of the switch.  
Mounting  
bracket  
Figure 2-1  
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Managed Layer 2 Switches GSM7224R and GSM7248R Hardware Installation Guide  
3. Tighten the screws with a No. 1 Phillips screwdriver to secure each bracket.  
4. Align the bracket and rack holes. Use two pan-head screws with nylon washers to fasten each  
bracket to the rack.  
5. Tighten the screws with a No. 2 Phillips screwdriver to secure the switch in the rack.  
Checking the Installation  
Before you apply power, perform the following checks:  
1. Inspect the equipment thoroughly.  
2. Verify that all cables are installed correctly.  
3. Check cable routing to ensure that cables are not damaged and will not create a safety hazard.  
4. Be sure that all equipment is mounted properly and securely.  
Connecting to Power and Check the LEDs  
The switch does not have an On/Off switch. The only way to apply or remove power is to connect  
or disconnect the power cord. Before you connect the power cord, select an AC outlet that is not  
controlled by a wall switch (which can turn off power to the switch).  
After you select an appropriate outlet, follow these steps to apply AC power:  
1. Connect one end of the AC power adapter cable to the rear of the switch, and the other end to  
a grounded three-pronged AC outlet.  
2. Check the Power LED on the front panel of the switch. The LED should light up in the  
following sequence:  
The LED turns yellow as the switch runs a power-on self-test (POST).  
If the switch passes the test, the LED turns green. The switch is working and ready to pass  
data.  
If the POST fails, the Power LED blinks yellow.  
If the Power LED does not light up, check that the power cable is plugged in correctly and that  
the power source is good. For help with troubleshooting, see Chapter 3, “Troubleshooting.”  
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SFP Modules  
The module bay accommodates a standard SFP module with an LC connector that is compatible  
with the IEEE 802.3z 1000BASE-X standard. SFP modules are sold separately.  
To install an SFP module insert the SFP module into the module bay. Press firmly to ensure that  
the module seats into the connector.  
Figure 2-2  
Connecting a Redundant Power Supply (RPS)  
Each switch has a redundant power supply (RPS) connector and a power receptacle on the rear.  
Power receptacle  
Redundant  
power supply  
connector  
Figure 2-3  
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You can connect an external DC-to-DC power supply unit to the switch to provide redundant  
power in case the primary power supply fails. To connect a redundant power supply (RPS) unit to  
the switch, first turn off the switch. When the power is off, you can remove the cover plate and  
connect the RPS unit to the switch. After all connections are completed, apply power to the switch.  
If you would like to purchase a RPS unit that is compatible with this switch, please go to the  
NETGEAR product support website http://www.kbserver.com. Select your product in the Product  
Support section of the screen. When the product support screen displays, look for the Certified  
RPS Power Supplier link.  
Connecting Equipment to the Switch  
You can connect devices, a Gigabit Ethernet module, a console, or a combination of these to the  
switch.  
RJ-45 Ports  
The switch uses Auto Uplink™ technology, which enables you to attach devices using either  
straight-through or crossover cables. Use a Category 5 (Cat5) unshielded twisted-pair (UTP) cable  
terminated with an RJ-45 connector.  
Note: Ethernet specifications limit the cable length between the switch and the attached  
device to 328 feet (100 meters).  
Connecting a Console to the Switch  
After you install the switch and apply power, you can connect to it with a terminal or workstation.  
You can use the command line interface (CLI) to identify the IP address. If you are stacking  
To use a console you need the following items:  
VT100/ANSI terminal, or a Windows PC, Apple Macintosh PC, or UNIX workstation.  
Null-modem cable with 9-pin connectors on each end (shipped with the product).  
Hardware Installation  
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To connect a console to the switch:  
1. Connect the null-modem cable to the console port on the rear of the switch.  
Console port  
Figure 2-4  
2. Connect the other end of the cable to a workstation or terminal.  
3. If you attached a workstation, start a terminal emulation program.  
Microsoft Windows users can use HyperTerminal, which comes with the Windows  
operating systems.  
Macintosh users can use ZTerm.  
UNIX users can use a terminal emulator such as TIP.  
4. Configure the terminal-emulation program to use the following settings:  
Baud rate: 9,600 bps  
Data bits: 8  
Parity: none  
Stop bit: 1  
Flow control: none  
After you connect a console to the switch, you will need to configure the switch. The following  
documents are provided for this purpose:  
Quick Installation Guide. Explains basic setup and configuration (provided as both a print  
document and in PDF format on the Resource CD).  
Managed Layer 2 Switches 7200R Series CLI Reference Manual Version 7.0. Gives detailed  
examples of how to use the CLI, and is located on the Resource CD.  
NETGEAR 7000 Series Managed Switch Administration Guide Version 6.0. Describes  
configuration examples, and is located on the Resource CD.  
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Hardware Installation  
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Chapter 3  
Troubleshooting  
Troubleshooting Chart  
The following table lists symptoms, causes, and solutions of possible problems.  
Table 3-1. Troubleshooting Chart  
Problem  
Cause  
Solution  
Power LED is off.  
No power is received  
Check the power cord connections for the  
switch at the switch and the connected  
device.  
Make sure that all cables used are correct  
and comply with Ethernet specifications.  
Link LED is off or intermittent. Port connection is not  
working.  
Check the crimp on the connectors, and  
make sure that the plug is properly inserted  
and locked into the port at both the switch  
and the connecting device.  
Make sure that all cables used are correct  
and comply with Ethernet specifications.  
Check for a defective adapter card, cable,  
or port by testing it in an alternate  
environment where all products are  
functioning.  
File transfer is slow, or  
Half or full duplex setting on  
Make sure that the attached device is set to  
performance degradation is a the switch and the connected auto negotiate.  
problem. device are not the same.  
Check the system message log.  
3-1  
v1.0, November 2007  
 
       
Managed Layer 2 Switches GSM7224R and GSM7248R Hardware Installation Guide  
Table 3-1. Troubleshooting Chart (continued)  
Problem  
Cause  
Solution  
A segment or device is not  
recognized as part of the  
network.  
One or more devices are not Verify that the cabling is correct. Be sure  
properly connected, or cabling that all connectors are securely positioned  
does not meet Ethernet  
guidelines.  
in the required ports. Equipment might have  
been accidentally disconnected.  
ACT LED is flashing  
continuously on all connected path) has been created.  
ports, and the network is  
disabled.  
A network loop (redundant  
Break the loop by ensuring that there is only  
one path from any networked device to any  
other networked device.  
Additional Troubleshooting Suggestions  
If the suggestions in Table 3-1 do not resolve your problem, refer to the troubleshooting  
suggestions in this section.  
Network adapter cards  
Make sure that the network adapter cards installed in the PCs are in working condition and that  
the software driver has been installed.  
Configuration  
If problems occur after you change the network configuration, restore the original  
connections. Then find the problem by making the changes, one step at a time. Make sure that  
cable distances, repeater limits, and other physical aspects of the installation do not exceed the  
Ethernet limitations.  
Switch integrity  
You can verify the integrity of the switch by resetting the switch. To reset the switch, use the  
Tools > Reset command, or remove AC power from the switch and then reapply AC power. If  
the problem continues, contact NETGEAR Technical Support.  
Auto-negotiation  
The copper 10/100/1000 Mbps ports negotiate the correct duplex mode and speed if the device  
at the other end of the link supports auto-negotiation. If the device does not support auto  
negotiation, the switch determines the speed, and the duplex mode defaults to half duplex. The  
fiber gigabit ports negotiate speed, duplex mode, and flow control, provided that the attached  
device supports auto-negotiation.  
3-2  
Troubleshooting  
v1.0, November 2007  
 
 
Appendix A  
Default Settings and Technical Specifications  
This appendix provides the default settings and technical specifications for the ProSafe™ 24-Port  
L2 Managed Switch with Static Routing GSM7224R and ProSafe™ 48-Port L2 Managed Switch  
with Static Routing GSM7248R.  
Default Settings  
The following table lists the factory default settings for the switches. You can use the RST (reset)  
button to return a switch to its factory default settings.  
Table A-1. Default Configuration Settings  
Features  
GSM7224R Default Settings  
GSM7248R Default Settings  
Port speed  
Port duplex  
Auto negotiation  
Auto negotiation  
Auto negotiation  
Auto negotiation  
Enabled  
Flow control (half duplex) Enabled  
Flow control (full duplex) Disabled  
Broadcast storm control Enabled  
Disabled  
Enabled  
Gigabit port type  
Auto detect  
DHCP  
Auto detect  
DHCP  
Management IP  
configuration  
Password protection  
User name  
Password  
Disabled  
Admin  
Disabled  
Admin  
(None)  
(None)  
Web access  
Java mode  
VLAN  
Enabled  
Enabled  
Enabled  
Enabled  
All ports belong to default VLAN (VLAN All ports belong to default VLAN  
1) as untagged ports  
(VLAN 1) as untagged ports  
IP multicast filtering  
Disabled  
Disabled  
Spanning Tree Protocol  
Enabled (IEEE 802.1s)  
Enabled (IEEE 802.1s)  
Default Settings and Technical Specifications  
v1.0, November 2007  
A-1  
 
     
Managed Layer 2 Switches GSM7224R and GSM7248R Hardware Installation Guide  
Table A-1. Default Configuration Settings (continued)  
Features  
GSM7224R Default Settings  
GSM7248R Default Settings  
Admin edge port  
Link aggregation  
Port mirroring  
Traffic prioritization  
ACL  
Enabled  
Enabled  
Disabled  
Disabled  
Disabled  
Disabled  
Disabled  
Disabled  
Disabled  
300 seconds  
Disabled  
Disabled  
Disabled  
Disabled  
Disabled  
Disabled  
Disabled  
300 seconds  
GVRP  
GMRP  
IP routing  
MAC address aging  
SNMP community  
Public (read-only access), private  
(read/write access)  
Public (read-only access), private  
(read/write access)  
VLAN Ingress filtering  
Enabled  
Enabled  
A-2  
Default Settings and Technical Specifications  
v1.0, November 2007  
 
Managed Layer 2 Switches GSM7224R and GSM7248R Hardware Installation Guide  
Technical Specifications  
Table A-2. Technical Specifications  
Feature  
GSM7224R  
GSM7248R  
IEEE Network  
Protocol and  
standards  
802.3 10BASE-T  
802.3 10BASE-T  
802.3u 100BASE-TX  
802.3z 1000BASE-SX  
802.3z 1000BASE-LX  
802.3ab 1000BASE-T  
802.3x flow control  
802.3u 100BASE-TX  
802.3z 1000BASE-SX  
802.3z 1000BASE-LX  
802.3ab 1000BASE-T  
802.3x flow control  
compatibility  
Switch  
management  
• Port mirroring support  
• SNMP v1, v2c, v3  
• Port mirroring support  
• SNMP v1, v2c, v3  
• RFC1757 RMON 1 groups 1, 2, 3, and 9 • RFC1757 RMON 1 groups 1, 2, 3, and 9  
• RFC1213 MIB II  
• RFC1213 MIB II  
• RFC1643 Ethernet Interface MIB  
• RFC1493 bridge MIB  
• RFC1643 Ethernet Interface MIB  
• RFC1493 bridge MIB  
• RFC2131 DHCP client (and BootP)  
• RFC2138 RADIUS client  
• Broadcast storm control  
• RFC2131 DHCP client (and BootP)  
• RFC2138 RADIUS client  
• Broadcast storm control  
Telnet sessions for management CPU (5) Telnet sessions for management CPU (5)  
• Ping support  
• Ping support  
• ARP support  
• ARP support  
• Private enterprise MIB  
• Configuration file upload, download  
(TFTP)  
• Private enterprise MIB  
• Configuration file upload, download  
(TFTP)  
• Runtime image download (TFTP and  
HTTP)  
• Runtime image download (TFTP and  
HTTP)  
• Command line interface  
• Web-based graphic user interface  
• Simple Network Time Protocol (SNTP)  
• Syslog  
• Command line interface  
• Web-based graphic user interface  
• Simple Network Time Protocol (SNTP)  
• Syslog  
• SSLv3/TLSv1.0 Web security  
• Secured Shell (SSHv1, v2)  
• SSLv3/TLSv1.0 Web security  
• Secured Shell (SSHv1, v2)  
Layer 2 services • 802.1Q Static VLAN (Up to 4k)  
• 802.1p Class of Service (CoS)  
• 802.1D Spanning Tree Protocol (STP)  
• 802.1w Rapid Spanning Tree Protocol  
(RSTP)  
• 802.1Q Static VLAN (Up to 4k)  
• 802.1p Class of Service (CoS)  
• 802.1D Spanning Tree Protocol (STP)  
• 802.1w Rapid Spanning Tree Protocol  
(RSTP)  
• 802.1s Multiple Spanning Tree Protocol  
(MSTP)  
• 802.1s Multiple Spanning Tree Protocol  
(MSTP)  
• 802.3ad Link Aggregation (LACP)  
• IGMP v1, v2 Snooping Support  
• 802.3ad Link Aggregation (LACP)  
• IGMP v1, v2 Snooping Support  
Default Settings and Technical Specifications  
A-3  
v1.0, November 2007  
 
   
Managed Layer 2 Switches GSM7224R and GSM7248R Hardware Installation Guide  
Table A-2. Technical Specifications (continued)  
Feature  
GSM7224R  
GSM7248R  
Layer 3 services • Static routing  
• ACL  
• Static routing  
• ACL  
• DiffServ QOS  
• DHCP, BOOTP Relay  
• DHCP server  
• UDP Relay  
• ARP  
• DiffServ QOS  
• DHCP, BOOTP Relay  
• DHCP server  
• UDP Relay  
• ARP  
• IGMP querier  
• IGMP querier  
Interface (Auto • 24 RJ-45 connectors for 10BASE-T,  
• 48 RJ-45 connectors for 10BASE-T,  
100BASE-TX, and 1000BASE-T  
Uplink on all RJ-  
45 ports)  
100BASE-TX, and 1000BASE-T  
• Four slots are gigabit interface converters • Four slots are gigabit interface converters  
(SFP) for SFP modules  
• RS-232 console port  
(SFP) for SFP modules  
• RS-232 console port  
Bandwidth  
48 Gbps  
96 Gbps  
Address  
8K MAC addresses per system  
8K MAC addresses per system  
database size  
10/100/1000  
buffer memory  
max support 0.75MB buffer memory.  
239,032 hours( ~27 years)  
Max support 1.5MB buffer memory  
162,303 hours( ~19 years)  
Mean time  
between failure  
(MTBF)  
Performance  
• Forwarding modes: Store-and-forward  
• Network latency: Less than 80  
microseconds for 64-byte frames in store-  
and-forward mode for 10 Mbps to 100  
Mbps transmission  
• Forwarding modes: Store-and-forward  
• Network latency: Less than 80  
microseconds for 64-byte frames in store-  
and-forward mode for 10 Mbps to 100  
Mbps transmission  
• Addressing: 48-bit MAC address  
• Addressing: 48-bit MAC address  
• Acoustic noise: (ANSI-S10.12): <38.6 dB • Acoustic noise: (ANSI-S10.12): 48.8 dB  
• Heat dissipation: 131.439 Btu/hr • Heat dissipation: 244.101 Btu/hr  
Power  
38.5W maximum 100-240 VAC, 50–60 Hz 71.5W maximum 100-240 VAC, 50–60 Hz  
consumption  
universal input  
universal input  
Dimensions  
(W x D x H)  
17.3 x 8.1 x 1.6 inch (W x D x H)  
(440 x 205 x 43 mm)  
17.3 x 8.1 x 1.6 inch (W x D x H)  
(440 x 205 x 43 mm)  
A-4  
Default Settings and Technical Specifications  
v1.0, November 2007  
 
Managed Layer 2 Switches GSM7224R and GSM7248R Hardware Installation Guide  
Table A-2. Technical Specifications (continued)  
Feature  
GSM7224R  
GSM7248R  
Environment  
Operating:  
Operating:  
Temperature: 32° to 131°F (0° to 55°C)  
• Humidity: 90% maximum relative  
Humidity, noncondensing  
Temperature: 32° to 131°F (0° to 55°C)  
• Humidity: 90% maximum relative  
Humidity, noncondensing  
• Altitude: 10,000 ft (3,000 m) maximum  
Storage:  
• Altitude: 10,000 ft (3,000 m) maximum  
Storage:  
Temperature: – 4° to 158°F (0° to 70°C)  
• Humidity: 95% maximum relative  
Humidity, noncondensing  
Temperature: – 4° to 158°F (–0° to 70°C)  
• Humidity: 95% maximum relative  
humidity, noncondensing  
• Altitude: 10,000 ft (3,000 m) maximum  
• Altitude: 10,000 ft (3,000 m) maximum  
Electromagnetic • CE mark, commercial  
• CE mark, commercial  
• FCC Part 15 Class A VCCI  
• Class A EN 55022 (CISPR 22) Class A  
• Class A C-Tick  
emissions and  
immunity  
• FCC Part 15 Class A VCCI  
• Class A EN 55022 (CISPR 22) Class A  
• Class A C-Tick  
• EN 50082-1  
• EN 50082-1  
EN 55024  
EN 55024  
Safety  
• CE mark, commercial  
• CSA certified (CSA 22.2 #950)  
• UL listed (UL 1950)/cUL IEC950/  
EN60950  
• CE mark, commercial  
• CSA certified (CSA 22.2 #950)  
• UL listed (UL 1950)/cUL IEC950/  
EN60950  
Default Settings and Technical Specifications  
v1.0, November 2007  
A-5  
 
Managed Layer 2 Switches GSM7224R and GSM7248R Hardware Installation Guide  
A-6  
Default Settings and Technical Specifications  
v1.0, November 2007  
 
Appendix B  
Related Documents  
This appendix provides links to reference documents you can use to gain a more complete  
understanding of the technologies used in your NETGEAR product.  
Document  
Link  
Windows XP and Vista Wireless  
Configuration Utilities  
Internet Networking and TCP/IP  
Addressing  
Wireless Communications  
Preparing a Computer for  
Network Access  
Virtual Private Networking (VPN)  
Glossary  
Related Documents  
B-1  
v1.0, November 2007  
 
   
Managed Layer 2 Switches GSM7224R and GSM7248R Hardware Installation Guide  
B-2  
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v1.0, November 2007  
 

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