3Com Switch Switch 4500G 24 Port Switch 4500G User Manual

3Com® Switch 4500G Family  
Getting Started Guide  
Switch 4500G 24-Port  
Switch 4500G 48-Port  
Switch 4500G PWR 24-Port  
Switch 4500G PWR 48-Port  
Part Number: 10014899 Rev. AC  
Published: October 2007  
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ABOUT THIS GUIDE  
Download the latest Thank you for purchasing a 3Com Switch 4500G. As part of our  
software and commitment to bringing you the most capable and dependable  
documentation for your network equipment, 3Com offers free software maintenance  
3Com switch updates and documentation updates on our website.  
To obtain the most up-to-date operating software and user  
documentation for the Switch 4500G, point your web browser to:  
www.3Com.com/4500G and select the “Support and  
Registration” link.  
Please note that you must register your 3Com switch to receive  
software upgrades. To register, point your web browser to  
eSupport.3Com.com.  
Before You Start  
The guide is intended for use by network administrators who  
install and set up network equipment; consequently, it assumes a  
basic working knowledge of Local Area Networks (LANs).  
Release Notes The Release Notes provide important information about the  
current software release, including new features, modifications,  
known problems, and instructions for upgrading your switch. You  
should read the Release Notes before installing the switch in your  
network.  
If the information in the Release Notes differs from this guide,  
follow the instructions in the Release Notes.  
User documentation and release notes are available in Adobe  
Acrobat Reader Portable Document Format (PDF) on the 3Com  
World Wide Web site at http://www.3com.com  
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6
ABOUT THIS GUIDE  
Conventions  
Table 1 lists important conventions that are used throughout this guide.  
Table 1 Notice Icons  
Icon  
Notice Type  
Description  
Information note  
Information that describes important features or  
instructions  
Caution  
Warning  
Information that alerts you to potential loss of data or  
potential damage to an application, system, or device  
Information that alerts you to potential personal injury  
Related  
Documentation  
In addition to this guide, the Switch 4500G documentation includes the  
following:  
3Com Switch 4500G Family Configuration Guide  
This guide contains information on the features supported by your  
switch and how they can be used to optimize your network. It is  
supplied in PDF format on the 3Com Web site.  
3Com Switch 4500G Family Command Reference Guide  
This guide provides detailed information about the web interface and  
command line interface that enable you to manage the switch. It is  
supplied in PDF format on the 3Com Web site.  
3Com Switch 4500G Family Quick Reference Guide  
This guide contains:  
a list of the features supported by the switch.  
a summary of the command line interface commands for the switch.  
This guide is also available under the Help button on the web  
interface.  
Release Notes  
These notes provide information about the current software release,  
including new features, modifications, and known problems. This  
document also provides detailed instructions for upgrading your switch  
with the latest software.  
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INTRODUCING THE SWITCH 4500G  
FAMILY  
1
This chapter introduces the Switch 4500G and describes how it can be used in  
your network. It includes a description of the hardware and software features and  
covers the following topics:  
About the Switch  
4500G  
The 3Com® Switch 4500G (hereinafter referred to as Switch 4500G) are Gigabit  
Ethernet switching products developed by 3Com. The 3Com® Switch 4500G  
family delivers flexible quad-speed performance (10/100/1000 and 10-Gigabit)  
and advanced voice-optimized features such as Power over Ethernet (PoE),  
auto-QoS and auto-voice VLAN. This makes the Switch 4500G ideal for medium  
businesses and small enterprises seeking to build a secure converged network.  
Currently, the Switch 4500G includes the following models:  
Switch 4500G 24-Port  
Switch 4500G 48-Port  
Switch 4500G PWR 24-Port  
Switch 4500G PWR 48-Port  
The Switch 4500G features the following advantages:  
Providing full Gigabit speed access ports  
Providing 10-Gigabit uplink ports  
Supporting IPv4 hardware forwarding  
Supporting jumbo frames  
Supporting port security  
Supporting link aggregation control protocol (LACP)  
Supporting 256 VLANs  
Supporting ACLs  
Supporting port-based/flow-based mirroring  
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8
CHAPTER 1: INTRODUCING THE SWITCH 4500G FAMILY  
For information about using the software features of the Switch, refer to the  
“Command Reference Guide” and the “Configuration Guide”.  
Summary of Hardware Table 2 summarizes the hardware features that are supported by the Switch  
Features 4500G.  
Table 2 Hardware Features  
Feature  
Switch 4500G  
Addresses  
Up to 8,000 supported  
Supported on all ports  
Store and Forward  
Auto-negotiation  
Forwarding Modes  
Duplex Modes  
Auto MDI/MDIX  
Half and full duplex on all front panel ports  
Supported on all ports. If fiber SFP transceivers are  
used, Auto MDIX is not supported.  
Flow Control  
In full duplex operation all ports are supported.  
The Switch 4500G ports can receive, but not send  
pause frames.  
Traffic Prioritization  
Supported (using the IEEE Std 802.ID, 1998 Edition):  
Eight traffic queues per port  
Power over Ethernet  
Supported on all front panel ports (3CR17171-91 and  
3CR17172-91only).  
Ethernet, Fast Ethernet, and Auto-negotiating 10/100/1000BASE-T ports or  
Gigabit Ethernet Ports  
100BASE-FX ports (3CR17181-91)  
SFP Ethernet Ports  
Supports fiber Gigabit Ethernet long-wave (LX),  
long-haul (LH70) and copper (T), 100BASE-LX10, and  
100BASE-FX transceivers in any combination.  
Mounting  
Clustering  
19-inch rack or standalone mounting  
Up to 32 (0–31) units can be linked together  
(31 members and 1 commander)  
Switch 4500G 24-Port  
and 48-Port—Front  
and Rear Panel Detail  
Figure 1 displays the front panel of the Switch 4500G 24-Port unit.  
Figure 1 Switch 4500G 24-Port—front panel  
(6)  
(7)  
(8)  
(9)  
(1) 10/100/1000 BASE-T autosensing  
Ethernet port status LED  
(2) Gigabit SFP Combo port status LED  
(3) Console port  
(4) 7-segment digitron display  
((6) LED for extended slot 1  
(9) Mode LED  
(5) Power LED  
(8) LED for extended slot 2  
(10) Mode switching button  
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Switch 4500G 24-Port and 48-Port—Front and Rear Panel Detail  
9
Figure 2 displays the rear panel of the Switch 4500G 24-Port unit.  
Figure 2 Switch 4500G 24-Port—rear panel  
(1)  
(2)  
(3)  
(4)  
(1) AC power input  
(3) Extended slot 1  
(2) Grounding terminal  
(4) Extended slot 2  
Figure 3 displays the front panel of the Switch 4500G 48-Port unit.  
Figure 3 Switch 4500G 48-Port—front panel  
(7)  
(9)  
(8)  
(1) 10/100/1000 BASE-T autosensing (2) Console port  
Ethernet port status LED  
(3) 7-segment digitron display  
(5) Mode LED  
(4) Mode switching button  
(6) Power LED  
(7) LED for extended slot 1  
(9) Gigabit SFP Combo port status LED  
(8) LED for extended slot 2  
Figure 4 displays the rear panel of the Switch 4500G 48-Port unit.  
Figure 4 Switch 4500G 48-Port—rear panel  
(2)  
(1)  
(4)  
(3)  
(1) AC power input  
(3) Extended slot 1  
(2) Grounding terminal  
(4) Extended slot 2  
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10  
CHAPTER 1: INTRODUCING THE SWITCH 4500G FAMILY  
Switch 4500G 24-Port  
and 48-Port Front  
Panel LEDs  
The Switch 4500G 24-Port and 48-Port units provide LEDs on the front panel to  
allow you to monitor the switch. Table 3 describes these LEDs. You can use the  
mode button on the front panel to switch the LEDs display mode (rate mode or  
duplex mode).  
Table 3 Switch 4500G 24-Port and 48-Port Front Panel LEDs  
LED  
Label Status  
Description  
Mode LED  
Mode Rate  
mode  
Green, ON The port status LEDs are showing  
the port rates.  
Duplex  
mode  
Yellow, ON The port status LEDs are showing  
the duplex mode of the ports.  
Power LED  
PWR  
Green, ON  
The switch starts normally.  
Green, blinking (1 Hz) The system is performing power-on  
self test (POST).  
Red, ON  
The system fails the POST.  
Yellow, blinking (1 Hz) One or more ports fail the POST.  
OFF  
The switch is powered off.  
Module LED  
Module Green, ON  
(MOD)  
The module is installed and  
operates normally.  
Yellow, blinking  
The module is not supported or is in  
trouble.  
OFF  
The module is not installed.  
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Switch 4500G 24-Port and 48-Port Front Panel LEDs  
11  
Table 3 Switch 4500G 24-Port and 48-Port Front Panel LEDs  
LED  
Label Status  
Description  
7-segment  
digitron  
display  
Unit  
POST  
running  
Green,  
blinking  
The POST ID of the in-process test is  
displayed.  
POST  
failed  
Red,  
blinking  
The POST ID of the failed test blinks.  
Loading  
software blinking  
Green,  
A light bar rotates clockwise around  
the display during the loading  
procedure.  
Fan  
failure  
Red, ON  
An “F” is displayed.  
A “t” is displayed.  
Overtemp Red, ON  
erature  
alarm  
Cluster  
status  
Green, ON A “C” is displayed if this is a  
command switch.  
An “S” is displayed if this is a  
member switch.  
A “c” is displayed if this is a  
candidate switch.  
A “1” is displayed when the switch  
operates independently.  
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12  
CHAPTER 1: INTRODUCING THE SWITCH 4500G FAMILY  
Table 3 Switch 4500G 24-Port and 48-Port Front Panel LEDs  
LED  
Label Status  
Description  
10/100/1000  
BASE-T  
Ethernet port  
status LED  
Rate  
mode  
Green  
The port works at the rate of 1000  
Mbps; the LED blinks quickly when  
the port is sending or receiving  
data.  
Yellow  
The port works at the rate of  
10/100 Mbps; the LED blinks quickly  
when the port is sending or  
receiving data.  
Yellow,  
blinking  
(3 Hz)  
POST fails on the port.  
OFF  
The port is not connected.  
Duplex  
mode  
Green  
The port works in full duplex mode;  
the LED blinks quickly when the  
port is sending or receiving data.  
Yellow  
The port works in half duplex mode;  
the LED blinks quickly when the  
port is sending or receiving data.  
Yellow,  
blinking  
(3 Hz)  
POST fails on the port.  
OFF  
The port is not connected.  
1000Base SFP  
port status  
LED  
This LED Green  
is not  
influence  
The port works at the rate of 1000  
Mbps; the LED blinks quickly when  
the port is sending or receiving  
data.  
d by the  
mode  
Yellow,  
button  
blinking  
POST fails on the port.  
(3 Hz)  
OFF  
The port is not connected.  
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Switch 4500G PWR 24-Port and 48-Port —Front and Rear Panel Detail  
13  
Switch 4500G PWR  
24-Port and 48-Port  
—Front and Rear  
Panel Detail  
Figure 5 displays the front panel of the Switch 4500G PWR 24-Port unit.  
Figure 5 Switch 4500G PWR 24-Port Front Units Front Panel  
(1) 10/100/1000 BASE-T autosensing  
Ethernet port status LEDs  
(2) Gigabit SFP Combo port status LED  
(3) Console port  
(5) Power LED  
(4) 7-segment digitron display  
(6) DC power LED  
(7) LED for extended slot 1  
(9) Mode LED  
(8) LED for extended slot 2  
(10) Mode switching button  
Figure 6 displays the rear panel of the Switch 4500G PWR 24-Port Ethernet  
Switch.  
Figure 6 Switch 4500G PWR 24-Port Units Rear Panel  
(1)  
(2)  
(3)  
(4)  
(5)  
(1) 10/100/1000 BASE-T autosensing  
Ethernet port status LED  
(2) AC power input  
(4) Extended slot 1  
(3) Grounding terminal  
(5) Extended slot 2  
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14  
CHAPTER 1: INTRODUCING THE SWITCH 4500G FAMILY  
Figure 7 displays the Switch 4500G PWR 48-Port units front panel.  
Figure 7 Switch 4500G PWR 48-Port Units Front panel  
(7)  
(8)  
(9)  
(1) 10/100/1000 BASE-T autosensing  
Ethernet port status LEDs  
(2) Console port  
(3) 7-segment digitron display  
(5) Mode LED  
(4) Mode switching button  
(6) Power LED  
(7) LED for extended slot 1  
(9) Gigabit SFP Combo port status LED  
(8) LED for extended slot 2  
Figure 8 describes the Switch 4500G PWR 48-Port units rear panel.  
Figure 8 Switch 4500G PWR 48-Port Units Rear Panel  
(1)  
(2)  
(3)  
(4)  
(1) AC power input  
(3) Extended slot 1  
(2) Grounding terminal  
(4) Extended slot 2  
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Switch 4500G PWR 24-Port and 48-Port Front Panel LEDs  
15  
Switch 4500G PWR  
24-Port and 48-Port  
Front Panel LEDs  
Table 4 describes the Switch 4500G PWR 24-Port and PWR 48-Port units’ LEDs.  
Table 4 Switch 4500G PWR 24-Port and 48-Port Front Panel LEDs  
LED  
Label  
Status  
Description  
Mode LED  
Mode  
Rate mode Green, ON  
The port status LEDs are  
showing the port rate.  
Duplex  
mode  
Yellow, ON  
The port status LEDs are  
showing the duplex mode of  
the port.  
PoE mode  
Green,  
The port status LEDs are  
blinking (1 Hz) showing the PoE status of the  
port.  
Power LED  
PWR  
Green, ON  
The switch starts normally.  
Green, blinking (1 Hz)  
The system is performing  
power-on self test (POST).  
Red, ON  
The POST fails the POST.  
Yellow, blinking (1 Hz)  
One or more ports fail the  
POST.  
OFF  
The switch is powered off.  
Module LED Module Green, ON  
(MOD)  
The module is installed and  
operates normally.  
Yellow, blinking  
The module is not supported  
or is in trouble.  
OFF  
The module is not installed.  
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16  
CHAPTER 1: INTRODUCING THE SWITCH 4500G FAMILY  
Table 4 Switch 4500G PWR 24-Port and 48-Port Front Panel LEDs  
LED  
Label  
Status  
Description  
7-segment  
digitron  
display  
Unit  
POST  
running  
Green,  
blinking  
The POST ID of the in-process  
test is displayed.  
POST failed Red, blinking The POST ID of the failed test  
blinks.  
Loading  
software  
Green,  
blinking  
A light bar rotates clockwise  
around the display during the  
loading procedure.  
Fan failure  
Red, ON  
An “F” is displayed.  
A “t” is displayed.  
Overtemper Red, ON  
ature alarm  
Cluster  
status  
Green, ON  
A “C” is displayed if there is a  
command switches.  
An “S” is displayed if there is  
a member switches.  
A “c” is displayed if there is a  
candidate switches.  
A “1” is displayed when the  
switch operates  
independently.  
PoE mode  
Green, ON  
Show the utilization of the  
power  
61-80%  
41-60%  
21-40%  
0-20%  
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Switch 4500G PWR 24-Port and 48-Port Front Panel LEDs  
17  
Table 4 Switch 4500G PWR 24-Port and 48-Port Front Panel LEDs  
LED  
Label  
Status  
Description  
10/100/1000 None  
BASE-T  
Ethernetport  
status LED  
Rate mode Green  
The port works at the rate of  
1000 Mbps; the LED blinks  
quickly when the port is  
sending or receiving data.  
Yellow  
Yellow,  
The port works at the rate of  
10/100 Mbps; the LED blinks  
quickly when the port is  
sending or receiving data.  
POST fails on the port.  
blinking (3 Hz)  
OFF  
The port is not connected.  
Duplex  
mode  
Green  
The port works in full duplex  
mode; the LED blinks quickly  
when the port is sending or  
receiving data.  
Yellow  
The port works in half duplex  
mode; the LED blinks quickly  
when the port is sending or  
receiving data.  
Yellow,  
POST fails on the port.  
blinking (3 Hz)  
OFF  
The port is not connected.  
PoE mode  
Green, ON  
The port supplies power  
normally  
Green,  
The required power of the  
blinking (1 Hz) attached devices has exceeded  
the maximum power that the  
port can supply.  
The total power that the  
switch supplies has reached  
the maximum power, so the  
port does not supply power  
any more.  
Yellow, ON  
The devices attached to the  
port are not powered devices  
(PDs), so the port does not  
supply power.  
The PoE power fails, so the  
port cannot supply power.  
10/100/1000 None  
BASE-T  
PoE mode  
(continued) blinking (3 Hz)  
Yellow,  
POST fails on the port  
Ethernetport  
status LED  
(continued)  
OFF  
The port does not supply  
power.  
1000 Base  
SFP port  
status LED  
None  
This LED is  
not  
influenced  
by the mode  
button  
Green  
The port works at the rate of  
1000 Mbps; the LED blinks  
quickly when the port is  
sending or receiving data.  
Yellow,  
POST fails on the port.  
blinking (3 Hz)  
OFF  
The port is not connected.  
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18  
CHAPTER 1: INTRODUCING THE SWITCH 4500G FAMILY  
System Specifications  
of the Switch 4500G  
Table 5 provides the system specifications for the Switch 4500G.  
Table 5 System specifications of the Switch 4500G  
Switch 4500G Switch 4500G Switch 4500G Switch 4500G  
24-Port  
3CR17761-91  
48-Port  
3CR17762-91  
PWR 24-Port  
3CR17771-91  
PWR 48-Port  
3CR17772-91  
Item  
Physical  
dimensions  
43.6 440 300 mm  
(1.72 17.3 11.8 in.)  
43.6 440 420 mm  
(1.72 17.3 16.5 in.)  
(H W D)  
Weight  
4 kg (8.8 lb)  
4.5 kg (9.9 lb)  
6 kg (13.2 lb)  
6.5 kg (14.3 lb)  
Console port One Console port  
GE ports on  
the front  
panel  
24 ×  
10/100/100  
48 ×  
10/100/100  
24 ×  
10/100/100  
48 ×  
10/100/100  
Mbps Ethernet Mbps Ethernet Mbps Ethernet Mbps Ethernet  
ports ports ports ports  
Four Gigabit SFP Four Gigabit SFP Four Gigabit SFP Four Gigabit SFP  
Combo ports Combo ports Combo ports Combo ports  
Optional  
interface  
modules  
Switch 4500G 2-port 10-Gigabyte Module, 3C17766  
Switch 4500G 2-port Local Connection Module, 3C17767  
Switch 4500G 1-port 10-Gigabyte Module, 3C17768  
Rated voltage range: 100 VAC to 240 VAC, 50/60 Hz  
Max voltage range: 90 VAC to 264 VAC, 47/63 Hz  
AC Input  
voltage  
Power  
consumption  
(full load)  
80 W  
120 W  
455 W, with 85 500 W when  
W of system  
power  
consumption  
and 370 W of  
PoE power  
RPS is not  
connected, with  
130 W of  
system power  
consumption  
and 370 W of  
PoE power  
870 W when  
RPS is  
connected, with  
130 W of  
system power  
consumption  
and 740 W of  
PoE power  
Operating  
temperature  
0°C to 45°C (32°F to 113°F)  
10% to 90%  
Relative  
humidity  
(noncondens-  
ing)  
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INSTALLING THE SWITCH  
2
This section contains information that you need to install and set up your 3Com®  
switch. For information on upgrading your switch, refer to the Switch 4500G  
WARNING: Safety Information. Before you install or remove any components  
from the Switch or carry out any maintenance procedures, you must read the  
3Com Switch Family Safety and Regulatory Information document enclosed  
with your switch as well as Appendix E, “Redundant Power Supply Safety  
AVERTISSEMENT: Consignes de securite. AAvant d’installer ou d’enlever un  
composant du commutateur ou de réaliser une procédure de maintenance, vous  
devez prendre connaissance du document 3Com Switch Family Safety and  
Regulatory Information accompagnant le commutateur ainsi que de l’annexe D,  
VORSICHT: Sicherheitsinformationen. Bevor Sie dem Switch Komponenten  
hinzufügen oder daraus entfernten oder Wartungsaufgaben durchführen, müssen  
Sie das dem Switch beigefügte Dokument 3Com Switch Family Safety and  
Regulatory Information (Sicherheitsinformationen und Betriebsbestimmungen  
der 3Com Switchfamilie) sowie Anhang D, “Redundant Power Supply Safety  
ADVERTENCIA: Información de seguridad. Antes de instalar o suprimir  
cualquier componente del conmutador o de realizar cualquier tarea de  
mantenimiento, debe leer el documento 3Com Switch Family Safety and  
Regulatory Information adjunto con el conmutador así como el Apéndice D,  
AVVERTENZA: Informazioni di sicurezza. Prima di installare o rimuovere  
qualsiasi componente dallo Switch o di eseguire qualsiasi procedura di  
manutenzione, leggere il documento 3Com Switch Family Safety and  
Regulatory Information fornito con lo switch e l'Appendice D, “Redundant  
OSTRZEŻENIE: Informacje o zabezpieczeniach. Przed zainstalowaniem lub  
pozbyciem się jakiegokolwiek elementu z Przełącznika lub przeprowadzeniem  
jakichkolwiek czynności konserwacyjnych, należy obowiązkowo przeczytać  
3Com Switch Family Safety and Regulatory Information dołączone do  
przełącznika oraz w Załączniku D, “Redundant Power Supply Safety Information”  
CAUTION: Opening the switch or tampering with the warranty sticker can void  
your warranty.  
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20  
CHAPTER 2: INSTALLING THE SWITCH  
ATTENTION : le fait d’ouvrir le commutateur ou d’altérer la vignette de garantie  
pourrait rendre la garantie nulle.  
WARNUNG: Öffnen des Switches oder Manipulation des Garantieaufklebers kann  
das Erlöschen der Garantie zur Folge haben.  
PRECAUCIÓN: si se abre el conmutador o se manipula el adhesivo de la garantía,  
ésta quedará invalidada.  
ATTENZIONE: L'apertura dello switch o la manomissione dell'adesivo di garanzia  
può invalidare la garanzia.  
OSTRZEŻENIE: Otwarcie przełącznika lub naruszenie plomby gwarancyjnej  
może unieważnić gwarancję.  
Rack-Mounting the  
Switch  
Follow the steps below to mount your switch in a standard 19-inch rack:  
1 Check that the rack is sturdy and properly grounded. Attach the rack-mount  
brackets to the front or rear panel of the chassis with screws.  
2 Place the switch on a shelf in the rack and slide it to a proper position along the  
guide rails, reserving a suitable clearance between the device and the guide rails.  
3 Fix the brackets to the rack posts with screws, making sure that the device is  
securely attached.  
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Rack-Mounting the Switch  
21  
Figure 9 Installing the switch in a 19-inch rack  
Mounting the Front Mount the front bracket as shown in Figure 10 and Figure 11.  
bracket  
Figure 10 Mount the front bracket to the device  
Screw  
Front  
bracket  
Figure 11 Mount the front bracket to the mount angel of the rack  
Screw  
Front  
bracket  
Front mount angle  
Mounting the Rear The Switch 4500G 24-Port and Switch 4500G 48-Port units do not need rear  
Bracket brackets. The description on mounting rear brackets is only for the Switch 4500G  
PWR 24-Port and Switch 4500G PWR 48-Port.  
Mount a screw on the back of the switch to closely connect the switch with the  
rear bracket to support the switch. There are three positions for screw mounting  
as shown in Figure 12.  
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22  
CHAPTER 2: INSTALLING THE SWITCH  
Figure 12 Positions for screw mounting on the switch  
Three positions for screw mounting  
Follow the steps below to mount the rear bracket:  
1 Use screws to fix the rear bracket to the rear mount angle.  
2 Determine the position for screw mounting on the switch according to the  
position of the mount angle.  
3 Mount the screw to the switch and make sure the screw and the rear bracket are  
closely connected.  
Figure 13 Installation completed 1  
Screw 2  
Screw 1  
Rear bracket  
Rear mount  
angle  
Screw 1: Fix the rear bracket to the mount  
angle.  
Screw 2 is mounted to the switch.  
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Mounting the Switch on a Desktop  
23  
Figure 14 Installation completed 2  
Screw 2  
Screw 1  
Rear bracket  
Rear mount angle  
Screw 1: Fix the rear bracket to the mount  
angle.  
Screw 2 is mounted to the switch.  
Mounting the Switch  
on a Desktop  
In many cases, standard 19-inch racks are not available. Therefore, switches are  
often placed on a desktop. To place your switch on a desktop, you simply need to:  
Make sure that the surface is clean, flat, and sturdy.  
Makes sure that the environment is well ventilated and allow 10 cm (3.9 in.) of  
space around the chassis for heat dissipation.  
Do not place heavy objects on your switch.  
When stacking, the vertical distance between two switches must be at least 1.5  
cm (0.59 in).  
The Power-up  
Sequence  
The following sections describe how to get your Switch 4500G powered-up and  
ready for operation.  
Powering-up the Switch Use the following sequence of steps to power-up the Switch.  
4500G  
1 Plug the power cord into the power socket at the rear of the Switch.  
2 Plug the other end of the power cord into your power outlet.  
The Switch powers-up and runs through its Power On Self Test (POST), which  
takes approximately one minute.  
Checking for Correct During the Power On Self Test, all ports on the Switch are disabled and the LEDs  
Operation of LEDs light. The PWR LED will flash green during the POST.  
When the POST has completed, check the PWR LED to make sure that your Switch  
is operating correctly. Table 6 shows possible colors for the LED.  
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24  
CHAPTER 2: INSTALLING THE SWITCH  
Table 6 PWR LED Colors  
Color  
State  
Green  
The Switch is powered-up and operating normally.  
The Switch has failed its Power On Self Test (POST).  
Some ports have failed POST*  
Red  
Yellow flashing  
Off  
The Switch is not receiving power.  
* In this event you can still use the Switch using the remaining ports that have passed the  
POST.  
If there is evidence of a problem, see “Solving Problems Indicated by LEDs” on  
page 52 for a list of suggested solutions.  
CAUTION: The Switch has no ON/OFF switch; the only method of connecting or  
disconnecting mains power is by connecting or disconnecting the power cord.  
Connecting a  
Redundant Power  
Supply  
The Switch 4500G 26-port PWR has a -48V DC Redundant Power Supply socket.  
WARNING: Only properly trained and qualified personnel should install the  
Redundant Power Supply (RPS).  
WARNING: Make sure to read these instructions in conjunction with the RPS flyer  
and the safety and installation instructions supplied with your RPS.  
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Connecting a Redundant Power Supply  
25  
WARNING: When powering any Switch 4500G from an RPS, make sure that the  
unit is earthed (grounded) by either connecting the power cord to the unit or by  
connecting the earth terminal on the rear of the unit to a reliable electrical earth  
(or by connecting both). Ensure that the earth connection is made before  
connecting the DC supply from the RPS.  
3Com switches that support -48V DC RPS inputs, and are PoE enabled, can only  
be powered by an RPS that complies with the isolation requirements of IEEE-Std  
802.3af. Non PoE enabled switches do not have this restriction.  
WARNING: Do not use a standard 'positive-earthed' -48V redundant power  
system suitable for use with telecommunications equipment with the 3Com  
Power-over-Ethernet (PoE) network switches. In order to meet the IEEE 802.3af  
(PoE) specification, the -48V output must be isolated from earth (ground) and  
meet the isolation requirements in that specification.  
WARNING: Any RPS must be approved as a SELV output in accordance with IEC  
60950-1/UL 60950-1/EN 60950-1.  
WARNING: The characteristics of the Switch 4500G DC supply input are provided  
in Table 11 on page 19.  
You can power the Switch 4500G using three methods:  
AC Mains only — this does not offer any power redundancy. If the AC mains  
supply or the AC power supply fails, the switch powers off.  
AC Mains and -48V DC (primary supply) — the internal AC supply acts as  
the backup in the event of a DC power failure.  
DC only — the switch does not need an AC supply and the resiliency is  
provided by the DC supply. This is useful in environments where only DC power  
is available.  
The RPS provides two main benefits:  
Power Redundancy — if a switch is powered from the mains supply unit, a  
failure of the internal power supply causes the switch to fail. You can avoid this  
by connecting both the AC and DC RPS supplies to the switch. You can also  
add redundancy to the DC power by using (N+1) DC power supplies to further  
increase the availability of the system.  
Uninterruptable Power — the system allows easy connection and  
maintenance of batteries to the RPS shelf to further increase the availability of  
the system.  
Specifying the 3Coms redundant power solution allows you to use any off-the-shelf -48V DC  
Redundant Power RPS that meets the requirements defined in Table 11 on page 19.  
System  
For an approved vendor list, more details about purchasing the 3Com  
recommended RPS, and a full set of requirements go to:  
http://www.3Com.com/RPS  
The 3Com recommended RPS generates -48V DC power using power supply units  
(or rectifiers). The outputs of the rectifier(s) are connected together so that you  
can increase the total -48V power available by adding rectifiers. For example, three  
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26  
CHAPTER 2: INSTALLING THE SWITCH  
1500W rectifiers can provide up to 4500W. Hot removal or insertion of a rectifier  
does not affect the -48V DC output voltage.  
Table 7 shows an example of the total power available from several 1500W  
rectifiers.  
A minimum of two rectifiers are required for each shelf to provide N+1 rectifier  
redundancy.  
Table 7 Power Availability  
Rectifiers  
1
2
3
4
5
6
No Rectifier  
Redundancy  
1500W 3000W  
4500W  
6000W  
7500W 9000W  
N+1 Rectifier  
Redundancy  
-
1500W  
3000W  
4500W  
6000W 7500W  
The unearthed -48V DC power distribution provides the mechanism to connect to  
the Switch 4500G. The distribution consists of several circuit breakers and  
connection terminals for the positive (common) and negative -48V outputs.  
Individually connect each Switch 4500G to a circuit breaker terminal.  
You can also connect a battery to battery terminals prior to the DC power  
distribution to provide uninterrupted power and to be protected against the loss  
of AC mains power.  
3Coms RPS solution uses -48V DC power distribution. The RPS system provides  
bulk -48V DC power that is separately distributed to a number of network  
switches.  
Each RPS consists of a shelf that can house from one to six rectifiers, a Distribution  
Module, and a Management Module.  
Connecting the Switch When connecting the RPS to the switch, the circuit breaker and 2-core cables need  
to the Redundant Power to be matched to the switchs power rating. Table 8 shows the recommended  
System circuit breaker and cable rating for the Switch 4500G. The recommended cable  
length should not exceed three metres (9.84 feet).  
Table 8 Switch 4500G Circuit Breaker and Cable Ratings  
Circuit Breaker Minimum 2-Core Cable Diameter  
PoE  
25A C type  
12 AWG (solid or stranded cable)  
WARNING: Make sure to follow the RPS Manufacturers recommendations when  
connecting the cable to the RPS.  
WARNING: Ensure that the circuit breaker in the RPS is in the open (off) position  
when connecting the cable to the RPS and the cable and connector to the switch.  
WARNING: Ensure that the positive terminal on the switch is connected to the  
positive (common) terminal of the RPS and that the negative terminal on the  
switch is connected to the negative (circuit breaker) terminal of the RPS.  
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Connecting a Redundant Power Supply  
27  
Figure 15 shows how to connect the power supply to the RPS socket in the back  
of the switch. Use the cable tie supplied with your switch to support the cable in  
the back of the RPS connector as shown in Figure 15.  
Figure 15 RPS Connection to the Switch  
NULL  
-
+
;2.0A  
-60V  
-48  
;1.0A  
;50/60Hz  
100-240V  
~
Cable Tie  
NULL  
-48 -60V;2 0A  
Null  
Pinout  
-
+
When the RPS is connected to the switch, you can move the circuit breaker in the  
RPS to the closed (on) position and the switch will be powered by the -48V DC  
power.  
The -48V DC power takes priority over the AC mains and powers the switch if it is  
connected.  
Connecting the Earthing Use the earthing cable that accompanies your switch if the length is suitable.  
Cable Alternatively use the earthing cable specification as defined in “Earthing Lead” on  
page 20.  
The earthing cable is only required if the switch is powered by the RPS only.  
The recommended cable length should not exceed three meters (9.84 feet).  
Using Power over The Switch 4500G Power over Ethernet (PoE) units can supply power to any IEEE  
Ethernet 802.3af compliant device through any of its front panel ports over a Category 5 or  
Category 5e Ethernet cable. The same cable connects the device to the network.  
The Switch 4500G units can supply power through the 10/100 ports only.  
Power over Ethernet is a self-configuring protocol. When you plug a PoE  
compliant device into one of the ports on the switch, the switch supplies the  
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28  
CHAPTER 2: INSTALLING THE SWITCH  
power required to the device, providing that the total power budget for the switch  
is not exceeded.  
A PoE switch combines the functionality of a standard Ethernet switch with a  
single power supply that can power multiple devices. Using a PoE switch has the  
following advantages over an non-powered network.  
Reduced Cabling — a PoE (802.3af) compliant device that has its power  
supplied over its Ethernet cable does not require a separate power supply. If,  
for example, you use the switch to connect a 3Com 11 Mbps Wireless LAN  
Access Point 8500 to the network, then only a network cable is required to  
provide both power and network connectivity.  
Increased Reliability — a device powered by a PoE switch can take advantage  
of the facilities available to the switch. You can fit the switch with a redundant  
power supply or uninterruptible power supply to increase its uptime.  
The switch supports resistor detection according to IEEE 802.3af and pre-standard  
detection methods.  
The Switch 4500G supports 3Com 802.3af equipment. For the latest list of  
supported devices, refer to the product page on the 3Com web site at  
For additional information on Power over Ethernet, refer to the Power over  
Ethernet Configuration chapter in the Configuration Guide available on the 3Com  
Web site. Power over Ethernet management is available using the web interface or  
the command line interface (CLI).  
Connecting Console  
Cable  
Console Cable A Console cable is an 8-core cable. One end of the cable is a crimped RJ-45  
connector for the connection to the Console port of the switch, and the other end  
is a DB-9 female connector for the connection to the serial port on the Console  
terminal, as shown in Figure 16.  
Figure 16 Console cable  
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Connecting Console Cable  
29  
Table 9 Console cable pinouts  
RJ-45  
Signal  
RTS  
Direction  
DB9 (modem)  
DB9 (console)  
1
2
3
4
5
6
7
8
7
4
3
1
5
2
6
8
8
6
2
5
5
3
4
7
DTR  
TXD  
CD  
GND  
RXD  
DSR  
CTS  
When you want to use the terminal to configure the switch, follow these steps to  
connect a terminal device to your switch using console cables:  
1 Plug the DB-9 female connector of the Console cable to the serial port of the PC  
or terminal where the switch is to be configured.  
2 Connect the RJ-45 connector of the Console cable to the Console port of the  
switch.  
CAUTION: Pay attention to the mark on the Console port and be sure to plug the  
connector to the right port.  
If the switch has been powered on:  
First connect the DB-9 connector of the Console cable to the PC before  
connecting the RJ-45 connector to the switch.  
Disconnect the DB-9 connector of the Console cable from the PC after  
disconnecting the RJ-45 connector from the switch.  
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30  
CHAPTER 2: INSTALLING THE SWITCH  
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SETTING UP SWITCH MANAGEMENT  
3
To make full use of the features offered by your switch, and to change and  
monitor the way it works, you have to access the management software that  
resides on the switch. Managing the switch can help you to improve the efficiency  
of the switch and therefore the overall performance of your network.  
This chapter explains the initial set up of the switch and the different methods of  
accessing the management software to manage a switch. It covers the following  
topics:  
Methods of Managing  
a Switch  
You can manage your switch using the:  
Command line interface  
Command line interface using SSH  
Web interface  
SNMP  
Command Line Interface Each switch has a command line interface (CLI) that allows you to manage the  
Management switch from a workstation, either locally using a console port connection (see  
Figure 17), or remotely over the network (see Figure 18).  
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32  
CHAPTER 3: SETTING UP SWITCH MANAGEMENT  
Figure 17 CLI Management using the Console Port  
Workstation  
(with terminal emulation  
software installed)  
Switch  
Console Port  
Connection  
Console Cable  
Figure 18 CLI Management over the Network  
Switch  
Workstation  
Connect over Network  
via Telnet  
There are two main views in the CLI:  
User View  
This view is shown when you first connect to the switch and shows basic  
information about operation and statistics. The prompt for user view is  
<4500G>.  
System View  
This view enables you to configure the system parameters. To display this view,  
from user view enter system-view. The prompt for system view is [4500G].  
Command Line Interface The Switch 4500G supports Secure Shell version 2.0 (SSHv2.0), allowing secure  
Management using SSH access to the switchs Command Line Interface.  
If you use SSH to administer your switch and the network traffic is intercepted, no  
passwords or configuration information will be visible in the data. To securely  
administer the switch using the Command Line Interface you need a third party  
SSH client.  
Web Interface Each switch has an internal set of web pages that allow you to manage the switch  
Management using a Web browser remotely over an IP network (see Figure 19).  
Figure 19 Web Interface Management over the Network  
Switch  
Workstation  
Connect over Network  
via web browser  
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Setting Up Your Switch  
33  
SNMP Management You can manage a switch using any network management workstation running  
the Simple Network Management Protocol (SNMP) as shown in Figure 20. For  
example, you can use the 3Com Network Director software, available from the  
3Com website. For information on the 3Coms network management tools, refer  
Figure 20 SNMP Management over the Network  
SNMP Network Management  
Switch  
Workstation  
Connect over Network  
using SNMP  
Setting Up Your  
Switch  
This section provides an overview of what you need to do to get your switch set  
up and ready for management when it is in its default state. The whole setup  
process is summarized in Figure 21. Detailed steps are contained in the sections  
that follow. In brief, you need to:  
Configure IP information manually for your switch or view the automatically  
configured IP information.  
Prepare for your chosen method of management.  
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34  
CHAPTER 3: SETTING UP SWITCH MANAGEMENT  
Figure 21 Initial Switch Setup and Management Flow Diagram  
Power Up the Switch.  
IP Information is automatically configured  
using DHCP  
Do you want to manually  
configure the IP information?  
No  
Yes  
How do you want to view the automatically  
configured IP information?  
How do you want to connect to the Switch?  
Connect to the con-  
Connect to a front panel port  
and use the Web Interface or  
Command Line  
Use 3Com Network  
Director (3ND).  
Connect to the console  
port and use the  
Command Line  
Interface.  
sole port and use the  
Command Line Inter-  
face.  
Interface.  
How do you want to manage your Switch? See page 31  
SNMP  
Command Line Interface  
Web Interface  
Connect using the  
console port.  
Connect over the  
network using Telnet.  
Connect over the  
network.  
CAUTION: To protect your switch from unauthorized access, you must change all  
three default passwords as soon as possible, even if you do not intend to actively  
manage your switch. For more information on default users and changing default  
IP Configuration You can use one of the following methods to allocate IP information to your  
switch (essential if you wish to manage your switch across the network).  
Configuring IP Manually  
When you configure the IP information, the switch retains the information that  
you enter until you change it again. You should configure manually configure the  
IP address if:  
You do not have a DHCP or BootP server on your network.  
You want to remove the risk of the IP address changing.  
Your DHCP or BootP server does not allow you to allocate static IP addresses.  
(Static IP addresses are necessary to ensure that the switch is always allocated  
the same IP information.)  
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Setting Up Your Switch  
35  
For most installations, 3Com recommends that you configure the switch IP  
information manually. This makes management simpler and more reliable as it is  
not dependent on a DHCP or BootP server, and eliminates the risk of the IP address  
changing.  
To manually enter IP information for your switch, work through the “Manually  
Automatically Configuring the IP Address using DHCP  
By default the switch attempts to configure its IP Information by obtaining an IP  
address from a DHCP server on the network.  
When using automatic IP configuration it is important that the switchs IP address  
is static, otherwise you will not know what the IP address is and it will be difficult  
to manage that switch. Most DHCP servers allow you to configure static IP  
addresses. Refer to the DHCP servers documentation for instructions.  
For a detailed description of how automatic IP configuration operates, refer to the  
You should use DHCP to automatically configure the IP address infomration if:  
Your network uses DHCP to allocate IP information.  
Flexibility is needed. If the switch is deployed onto a different subnet, it will  
automatically reconfigure itself with an appropriate IP address, instead of you  
having to manually reconfigure the switch.  
If the switch is not allocated with an automatic IP address, the IP configuration will  
be blank or shown as ‘’’’.  
If you use the automatic IP configuration method, you need to discover the  
automatically allocated IP information before you can begin managing the switch.  
Preparing to Manage Once your switchs initial set up is complete you can set up your chosen  
Your Switch management method as described in “Methods of Managing a Switch” on  
For detailed information about the specific web interface operations and  
command line interface commands and problem solving, refer to the “Switch  
4500G Command Reference Guide” on the 3Com Web site.  
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36  
CHAPTER 3: SETTING UP SWITCH MANAGEMENT  
Manually Configuring  
IP Information  
You can manually configure the switchs IP information by:  
Connecting a workstation to the switchs console port using a console cable.  
You can then manually enter the IP information using the command line  
interface (CLI).  
Connecting a workstation to one of the ports on the switchs front panel using  
an Ethernet cable. You can then manually enter the IP information using the  
web interface or the command line interface.  
Connecting to the To set up your switch manually you can make a connection to the console port,  
Console Port (this example describes a local connection to the console port, rather than one  
using a modem). You can do this while the switch is offline, before you connect  
the switch to a network, or while the switch is connected to a network.  
Prerequisites  
A workstation with terminal emulation software installed, such as Microsoft  
Hyperterminal. This software allows you to communicate with the switch  
directly through the console port.  
Documentation supplied with the terminal emulation software.  
The console cable (RJ-45) supplied with your switch.  
You can find pin-out diagrams for the cable in Appendix A on page 55.  
IP information including the:  
IP address  
subnet mask  
default gateway  
management VLAN ID, normally set to the default value (1)  
Connecting the Workstation to the Switch  
To connec the workstation to the switch, perform the following steps:  
1 Connect the workstation to the console port using the console cable as shown in  
Figure 22 Connecting a Workstation to the Switch using the Console Port  
Workstation  
Switch  
(with terminal emulation  
software installed)  
Console Port  
Connection  
Console Cable  
To connect the cable:  
a Attach the RJ-45 connector on the cable to the switchs console port.  
b Attach the other end of the cable to the workstation and tighten the retaining  
screws on the cable to prevent it from being loosened.  
2 Open your terminal emulation software and configure the COM port settings to  
which you have connected the cable. The settings must be set to match the  
default settings for the switch, which are:  
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Manually Configuring IP Information  
37  
19,200 baud (bits per second)  
8 data bits  
no parity  
1 stop bit  
no hardware flow control  
Refer to the documentation that accompanies the terminal emulation software for  
more information.  
3 Power up the switch. The Power on Self Test (POST) run automatically. The Switch  
4500G takes approximately one minute to boot.  
Setting Up the Switch with IP Information  
You are now ready to manually set up the switch with IP information using the  
command line interface.  
1 The command line interface login sequence begins as soon as the switch detects a  
connection to its console port.  
If the login prompt does not begin immediately, press Enter a few times until it  
starts.  
2 At the login prompts, enter adminas your user name and press Enter. At the  
password prompt press Enter again. If you have logged on correctly, <4500G> is  
displayed as shown in Figure 23.  
You automatically log on in User View.  
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38  
CHAPTER 3: SETTING UP SWITCH MANAGEMENT  
Figure 23 User View Login  
Starting......  
***********************************************************  
*
*
* Switch 4500G 48-Port BOOTROM, Version 120  
*
*
*
***********************************************************  
Copyright (c) 2004-2007 3Com Corporation and its licensors.  
Creation date : Sep 5 2007, 14:07:22  
CPU Clock Speed : 264MHz  
BUS Clock Speed : 33MHz  
Memory Size : 128MB  
Mac Address : 0016e0d67c00  
Press Ctrl-B to enter Boot Menu... 0  
Auto-booting...  
Decompress Image................................................................  
................................................................................  
................................................................................  
................................................................................  
................................................................................  
................................................................................  
................................................................................  
................................................................................  
................................................................................  
..................OK!  
Starting at 0x80100000...  
User interface aux0 is available.  
Press ENTER to get started.  
Login authentication  
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Manually Configuring IP Information  
39  
Username:admin  
Password:  
<4500G>  
%Apr 26 12:00:42:811 2000 4500G SHELL/4/LOGIN: admin login from aux0  
<4500G>  
New diagram for Figure  
28:****************************************************************  
* All rights reserved (2004-2007)  
*
* Without the owner's prior written consent,  
* no decompiling or reverse-engineering shall be allowed.  
*
*
*****************************************************************  
Login authentication  
Username:admin  
Password:  
<4500G>  
This a new figure 29:  
******************************************************************************  
* All rights reserved (2004-2007)  
*
* Without the owner's prior written consent,  
* no decompiling or reverse-engineering shall be allowed.  
*
*
******************************************************************************  
User interface aux0 is available.  
Please press ENTER.  
Login authentication  
Username:admin  
Password:  
<4500G>  
%Sep 14 15:04:27:761 2007 4500G SHELL/4/LOGIN: admin login from aux0  
<4500G>display ip interface brief  
*down: administratively down  
(s): spoofing  
Interface  
Physical Protocol IP Address  
up up 10.10.23.221  
Vlan-interface1  
<4500G>  
3 Enter the system-viewcommand and press Enter. The [S4500G] prompt is  
displayed.  
4 Type interface vlan 1and press Enter.  
5 Enter the IP address and subnet mask for the switch as follows:  
ip address xxx.xxx.xxx.xxx mmm.mmm.mmm.mmm  
(where xxx.xxx.xxx.xxx is the IP address and mmm.mmm.mmm.mmm is the subnet  
mask of the switch)  
6 Select the quitcommand and enter the switchs default gateway:  
ip route-static 0.0.0.0 0.0.0.0 xxx.xxx.xxx.xxx  
(where xxx.xxx.xxx.xxx is the IP address of the default gateway)  
7 From the User View, type saveto save the switchs configuration (this information  
is not saved automatically when the switch is powered down).  
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40  
CHAPTER 3: SETTING UP SWITCH MANAGEMENT  
You can now set up your chosen management method. See “Methods of  
If you do not intend to use the command line interface using the console port to  
manage the switch, you can disconnect the serial cable and close the terminal  
emulator software.  
Connecting to a Front To set up your switch manually you can, alternatively, make a connection to a front  
Panel Port panel port. To do this you will need an IP address, refer to “Viewing Automatically  
Configured IP Information” on page 42 for more information.  
The procedure described in this section assumes the unit is powered up in  
standalone mode.  
Prerequisites  
A workstation running a suitable operating system. Refer to “Choosing a  
A Network Interface Card (NIC).  
A Category 5 twisted pair Ethernet cable with RJ-45 connectors at both ends.  
A suitable Web browser. Refer to “Choosing a Browser”on page 45.  
Existing IP address of the switch.  
The switchs IP information, including the:  
IP address  
subnet mask  
default gateway  
management VLAN ID, normally set to the default value (1)  
Connecting the Workstation to the Switch  
1 Connect the workstation to a front panel port using an Ethernet cable as shown in  
Figure 24 Connecting a Workstation to the Switch using a Front Panel Port  
Switch  
Workstation  
(with a Network  
Interface Card  
installed)  
Front Panel  
Port Connection  
Ethernet Cable  
To connect the cable:  
a Attach an RJ-45 connector at one end of the Ethernet cable to the Network  
Interface Card (NIC) in the workstation.  
b Connect the RJ-45 connector at the other end of the cable to one of the  
switchs front panel ports.  
Do not interconnect the switch to any other unconfigured switch.  
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Manually Configuring IP Information  
41  
Setting Up the Switch with IP Information  
You can now review or change the switchs IP information. You can do this using  
the Web interface or the command line interface (CLI) using telnet.  
Using the Web Interface  
1 Power-up the switch. This takes approximately one minute.  
2 Open a suitable Web browser and enter the IP address of your switch in the  
Address field.  
If there is no response, wait for one minute then re-enter the IP address.  
If a pop up message appears displaying download and install simplified Chinese  
information, click Cancel.  
3 At the login prompt, enter adminas your user name and press Enter and at the  
password prompt press Enter again. If you have logged on correctly, the Device  
View of the switch is displayed.  
4 To enter basic setup information for the switch, select Administration > IP  
Setup and then follow the wizard through various system screens to enter the IP  
address and subnet mask that you want the switch to use when it is connected to  
the network. The final page displays a summary of the information entered.  
5 Select Save Configurationto save the configuration to your switch.  
The initial setup of your switch is now complete and you can now set up your  
chosen management method. See “Methods of Managing a Switch” on page 31.  
Using Command Line Interface with Telnet  
1 To start a Telnet session to the unit, click Startin Microsoft Windows.  
a Click Run.  
b In Open field, type the units IP address:  
Telnet xxx.xxx.xxx.xxx  
(where xxx.xxx.xxx.xxx is the switchs IP address)  
c Click OK.  
2 Press Enter to open a login prompt.  
If the login prompt does not begin immediately, press Return a few times until it  
starts.  
3 At the login prompt, enter adminas your user name and press Return at the  
password prompt. If you have logged on correctly, <4500G> is displayed as shown  
in the example in Figure 25.  
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42  
CHAPTER 3: SETTING UP SWITCH MANAGEMENT  
Figure 25 User View Login using Telnet  
4 Enter the system-viewcommand and Enter.  
5 Enter interface vlan 1and Enter.  
6 Enter the IP address and subnet mask for the switch as follows:  
ip address xxx.xxx.xxx.xxx mmm.mmm.mmm.mmm  
(where xxx.xxx.xxx.xxx is the IP address and mmm.mmm.mmm.mmm is the subnet  
mask of the switch)  
7 Enter the default gateway for the switch:  
ip route-static 0.0.0.0 0.0.0.0 xxx.xxx.xxx.xxx  
(where xxx.xxx.xxx.xxx is the IP address of the default gateway)  
8 Enter the savecommand to save the configuration (the configuration is not  
saved automatically when the switch is powered down).  
The initial set up of your switch is now complete and you can set up your  
management method. See “Methods of Managing a Switch” on page 31.  
Viewing  
If you allow the switch to automatically configure its own IP information you need  
to discover and view the IP information before you can begin to manage the  
switch by:  
Automatically  
Configured IP  
Information  
Using 3Com Network Director to auto-discover the switch and display the its  
automatically allocated IP information.  
Connecting a workstation to the switchs console port using a console cable,  
then using the command line interface to view its automatically assigned IP  
information.  
Each method is described in detail below.  
Using 3Com Network You can use the 3Com Network Director application (available from the 3Com  
Director website) to discover the automatically allocated IP information.  
1 Connect your switch to the network.  
2 Power-up the switch and wait for two minutes.  
3 Launch 3Com Network Director and run the Auto-discovery wizard.  
3Com Network Director will auto-discover the new switch and display the IP  
information that has been automatically allocated to the switch.  
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Viewing Automatically Configured IP Information  
43  
Most DHCP and BootP servers allow static IP addresses to be configured so that  
you know what IP address the switch will be given. Refer to the documentation  
that accompanies your DHCP or BootP server.  
If your network does not have a DHCP or BootP server, the workstation running  
3Com Network Director must be on the same subnet as the switch, because  
Auto-IP addresses are non-routable.  
Connecting to the Alternatively, you can view the automatically configured IP information using the  
Console Port command line interface (CLI) through a connection to the console port. (This  
example describes a local connection to the console port, rather than a remote  
one using a modem.) For further information on connecting using the console  
Viewing IP Information using the Console Port  
You are now ready to view the automatically allocated IP information using the  
command line interface.  
1 Connect your switch to the network using the Ethernet cable. As soon as a  
network connection is made the switch begins the automatic IP configuration  
process.  
The automatic IP configuration process usually completes within one minute.  
2 The command line interface login sequence begins as soon as the switch detects a  
connection to its console port.  
If the login prompt does not begin immediately, press Return a few times until it  
starts.  
3 At the login and password prompts, enter adminas your user name and press  
Return at the password prompt. If you have logged on correctly, <4500G> is  
displayed as shown in the example in Figure 26.  
Figure 26 User View Login  
4 Enter display ip interface brto view a summary of allocated IP  
addresses.  
The initial set up of your switch is now complete and the switch is ready for you to  
set up your chosen management method. See “Methods of Managing a Switch”  
on page 31.  
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44  
CHAPTER 3: SETTING UP SWITCH MANAGEMENT  
If you do not intend to use the command line interface using the console port to  
manage the switch, you can logout, disconnect the serial cable and close the  
terminal emulator software.  
Setting Up Command  
Line Interface  
Management  
This section describes how you can set up command line interface management  
using a local console port connection or over the network.  
User Interface Overview User interface configuration is provided by the switch to configure and manage  
the port data. There are two types of user interfaces:  
AUX User Interface—used to log in to your switch using the console port. A  
fabric can have up to eight AUX user interfaces.  
VTY User Interface—used to Telnet to the switch. The switch can have up to  
five VTY user interfaces.  
CLI Management using To manage a switch using the command line interface using the local console port  
the Console Port connection:  
1 Ensure you have connected your workstation to the console port correctly as  
2 Your switch is now ready to continue being managed and/or configured through  
the CLI using its console port.  
CLI Management over To manage a switch using the command line interface over a network using  
the Network Telnet:  
1 Ensure you have already set up the switch with IP information as described in  
2 Check that you have the IP protocol correctly installed on your management  
workstation. You can check this by trying to browse the World Wide Web. If you  
can browse, the IP protocol is installed.  
3 Check you can communicate with the switch by entering a pingcommand at the  
DOS prompt in the following format:  
c:\ ping xxx.xxx.xxx.xxx  
(where xxx.xxx.xxx.xxx is the IP address of the switch)  
If you get an error message, check that your IP information has been entered  
correctly and the switch is powered up.  
4 To open a Telnet session using the DOS prompt, enter the IP address of the switch  
that you wish to manage in the following format:  
>telnet xxx.xxx.xxx.xxx  
(where xxx.xxx.xxx.xxx is the IP address of the switch)  
If opening a Telnet session using third party software you will need to enter the IP  
address in the format suitable for that software.  
5 At the login and password prompts, enter adminas your user name and press  
Return at the password prompt (or the password of your choice if you have  
already modified the default passwords).  
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Setting Up Command Line Interface Management using SSH  
45  
If the login prompt does not display immediately, press Return a few times until it  
starts.  
6 If you have logged on correctly, the switch you want to manage is displayed as  
<4500G>, as shown in Figure 23 on page 38.  
Setting Up Command  
Line Interface  
Management using  
SSH  
To set up command line interface management using SSH, refer to the chapter  
entitled “SSH Terminal Service” in the “3Com® Switch 4500G Family  
Configuration Guide.”  
Setting Up Web  
Interface  
Management  
This section describes how you can set up web interface management over the  
network.  
Prerequisites  
Ensure that you have already set up the switch with IP information as described  
Ensure that the switch is connected to the network using a Category 5 twisted  
pair Ethernet cable with RJ-45 connectors.  
A suitable Web browser.  
Choosing a Browser  
To display the web interface correctly, use one of the following Web browser and  
platform combinations:  
Table 10 Supported Web Browsers and Platforms  
Platform  
Windows Windows Windows  
Red Hat  
Linux 9  
Solaris  
7/9  
Browser  
2000  
XP  
Server 2003  
Netscape 7.1  
Yes  
Yes  
Yes  
Yes  
No  
No  
No  
No  
No  
Yes  
Yes  
No  
Internet Explorer 5.5 Yes  
Internet Explorer 6.0 Yes  
Yes  
Yes  
No  
No  
Mozilla 1.4  
No  
Yes  
For the browser to operate the web interface correctly, JavaScript™ and Cascading  
Style Sheets must be enabled on your browser. These features are enabled on a  
browser by default. You will only need to enable them if you have changed your  
browser settings.  
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46  
CHAPTER 3: SETTING UP SWITCH MANAGEMENT  
Web Management Over To manage a switch using the web interface over an IP network:  
the Network  
1 Check that you have the IP protocol correctly installed on your management  
workstation. You can check this by trying to browse the World Wide Web. If you  
can browse, the IP protocol is installed.  
2 Check you can communicate with the switch by entering a pingcommand at the  
DOS prompt in the following format:  
c:\ ping xxx.xxx.xxx.xxx  
(where xxx.xxx.xxx.xxx is the IP address of the switch)  
If you get an error message, check that your IP information has been entered  
correctly and the switch is powered up.  
3 Open your web browser and enter the IP address of the switch that you wish to  
manage in the URL locator, for example, in the following format:  
4 At the login and password prompts, enter adminas your user name and press  
Return at the password prompt (or the password of your choice if you have  
already modified the default passwords).  
5 Click on the Device Viewbutton to display the web management options.  
Setting Up SNMP  
Any network management application running the Simple Network Management  
Management V1 or V2 Protocol (SNMP) can manage a switch if:  
The correct Management Information Bases (MIBs) are installed on the  
management workstation.  
The management workstation is connected to the switch using a port in VLAN  
1 (the Default VLAN). By default, all ports on the switch are in VLAN 1.  
You can use the 3Com Network Director application that is available from the  
3Com website to provide SNMP management for your switch. If you use 3Com  
Network Director it automatically loads the correct MIBs and necessary files onto  
your workstation.  
Prerequisites  
Documentation supplied with the SNMP network management application  
software.  
The default read community string is public. The default write community  
string is private.  
To display the current configuration of the community strings in the System  
View, enter display snmp-agent community.  
To configure new read community strings, enter snmp community read  
(new community string up to 32 characters).  
To configure new write community strings, enter snmp community write  
(new community string up to 32 characters).  
To remove a community string, enter undo snmp-agent community(the  
string to be removed).  
To manage your switch using an SNMP network management application, you  
need to specify SNMP community strings for the users defined on the switch. You  
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Default Users and Passwords  
47  
can do this using the command line interface system management snmp  
communitycommand. Refer to the command line interface section of the  
“SuperStack 4 Switch Command Reference Guide” for more information.  
SNMP V3 is on as default. All commands are in snmp menu in System View.  
Default Users and  
Passwords  
If you intend to manage the switch using the web interface or the command line  
interface, or to change the default passwords, you need to log in with a valid user  
name and password. The switch has three default user names, and each user  
name has a different password and level of access. These default users are listed in  
CAUTION: To protect your switch from unauthorized access, you must change all  
three default passwords as soon as possible, even if you do not intend to actively  
manage your switch.  
Table 11 Default Users  
User  
Name  
Default  
Password  
Access Level  
monitor  
monitor  
monitor  
The user can view all manageable parameters, except  
special/security features, but cannot change any  
manageable parameters  
manager manager  
manager  
The user can access and change the operational parameters  
but not special/security features  
admin  
(no  
password)  
security  
The user can access and change all manageable parameters  
Use the admin default user name (no password) to login and carry out initial  
switch setup.  
To set a password for the admin user in the CLI, enter the following from system  
view:  
[4500G]local-user admin <cr>  
[4500G-luser-admin]password simple xxxxxxxx  
(where xxxxxxxxis your chosen password).  
Save the configuration in the User View.  
For information on the lost password procedure please refer to the Configuration  
Guide that is supplied with your switch.  
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48  
CHAPTER 3: SETTING UP SWITCH MANAGEMENT  
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PROBLEM SOLVING  
4
This chapter helps you to diagnose and solve problems you may have with the  
operation of your switch. There is also an explanation of IP addressing and  
upgrading software.  
The topics covered are:  
If you experience a problem that is not listed here, it may be included in the  
Support section of the switch 4500G Command Reference Guide on the CD-ROM  
that accompanies your switch.  
For Technical Support information, see Appendix C “Obtaining Support for  
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50  
CHAPTER 4: PROBLEM SOLVING  
Solving Problems  
Indicated by LEDs  
If the LEDs on the switch indicate a problem, refer to the list of suggested  
solutions below.  
The PWR LED does not light  
Check that the power cable is firmly connected to the switch and to the supply  
outlet. If the connection is secure and there is still no power, you may have a faulty  
power cord or an internal fault. Check the power cord by:  
Testing it in another device.  
Connecting a working power cord to the ‘problem’ device and contact your  
supplier for advice.  
On powering-up, the PWR LED lights Red  
The switch unit has failed its Power On Self Test (POST) because of an internal  
problem. The fault type will be indicated on the unit LEDs. Contact your supplier  
for advice.  
On powering-up, the PWR LED is flashing yellow  
A port has failed and has been automatically disabled. You can verify this by  
checking that the Port LED is quickly flashing Yellow. If a port fails, the switch  
passes its Power On Self Test and continues to operate normally.  
A Port LED is flashing yellow  
The port has failed and has been automatically disabled. The switch passes its  
Power On Self Test and continues to operate normally, even if one or more ports  
are disabled.  
A link is connected and yet the Port LED does not light  
Check that:  
The switch and the device at the other end of the link (or cable) are connected  
securely.  
The devices at both ends of the link are powered-up  
The quality of cable is satisfactory  
Auto-negotiation settings are the same at both ends.  
Auto-negotiation problems will occur with 10BASE-T or 100BASE-T where  
auto-negotiation is disabled and incorrect cables are being used (cross-over or  
straight).  
Auto-negotiation problems will occur with fiber if:  
The Receiver (RX) and Transceiver (TX) cable connectors are swapped  
Fibers are broken  
Auto-negotiation differs at either end (a link appears at the ‘fixed’ end and  
not at the auto-negotiation end)  
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Solving Hardware Problems  
51  
Solving Hardware  
Problems  
In the rare event of your switch unit experiencing a hardware failure, refer to the  
list of suggested solutions below.  
A fan failure warning message is received  
Your switch has a fan monitoring system that will generate fan failure warning  
messages. Fan failure could potentially reduce the lifetime of the switch. The  
monitoring system polls the fan status at periodic intervals while the unit is  
powered up.  
If one fan has failed in the switch, a warning message will be generated in the  
following ways:  
Unit LED  
The seven segment display will show a green flashing ‘f’.  
RMON Trap  
If configured, an RMON trap is generated and sent to the management  
workstation.  
Command Line Interface  
An indication of a general hardware failure is provided through the Top level  
menu displayed when logging on to the CLI. For more detailed information  
about the failure select the display logbuffer command.  
Web interface  
An indication of fan failure is provided through the Device Summary table for  
the specific unit. In addition all Summary tables turn red to indicate the fan  
failure.  
If a fan failure warning message is generated:  
1 Power off the unit.  
2 Check that the air vents are not obstructed.  
3 Power cycle the unit. To do this, remove and reconnect the AC mains supply. If  
another fan failure warning message is generated using the Command Line  
Interface or the Web interface, return the unit to 3Com.  
Unit fails, no SNMP fan failure message is received  
1 Power cycle the unit. To do this, remove and reconnect the AC mains supply.  
2 Check the command line interface (display logbuffer command) to  
determine whether a thermal shutdown has occurred.  
3 If no, return the unit:  
If yes, check that:  
The air vents are not obstructed.  
The ambient temperatures and environmental conditions meet those specified  
in Appendix B.  
4 Power cycle the unit. If a further thermal shutdown occurs, and all environmental  
conditions are satisfactory, return the unit to 3Com.  
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52  
CHAPTER 4: PROBLEM SOLVING  
Error message indicating that the SFP transceiver is invalid  
The switch has identified that the SFP does not meet the minimum requirements  
for the switch and has disabled the port. To correct this problem, completely  
remove the SFP and replace it with a 3Com approved SFP.  
Error message indicating that the SFP transceiver is faulty  
To correct this problem, completely remove the SFP and then reinsert it.  
Alternatively, insert another identical SFP. If the problem persists, contact 3Com  
Technical Support.  
Solving  
If you experience communication problems with the switch, ensure that:  
Communication  
Problems  
The switch IP address and Management VLAN ID has been configured.  
If the switch is separated from your management application by a router,  
ensure that the default gateway IP address within the switch is the same as the  
IP address of the router.  
The switchs IP address has been entered correctly in your network  
management application (such as 3Com Network Director).  
The following is a brief overview of IP addressing, and how to obtain a registered  
IP address.  
IP Addressing  
To be managed correctly, each device on your network (for example a switch or  
Hub) must have a unique IP address. IP addresses have the format n.n.n.n where n  
is a decimal number between 0 and 255. An example IP address is 192.168.100.8.  
The IP address is split into two parts:  
The first part (‘192.168.100’ in the example) identifies the network on which  
the device resides  
The second part (‘.8’ in the example) identifies the device within the network  
The natural subnet mask for this example is 255.255.255.0.  
If your network has a connection to the external IP network, that is, you access the  
Internet, you must apply for a registered IP address.  
How do you obtain a registered IP Address?  
The IP registration system ensures that every IP address used is unique; if you do  
not have a registered IP address, you may be using an identical address to  
someone else and your network will not operate correctly.  
InterNIC Registration Services is the organization responsible for supplying  
registered IP addresses. The following contact information is correct at time of  
publication:  
World Wide Web site: http://www.internic.net  
If your IP network is internal to your organization only, that is, you do not access  
the Internet, you may use any arbitrary IP address as long as it is not being used by  
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Solving Fabric Formation Problems  
53  
another device on your network. 3Com suggests you use addresses in the range  
192.168.0.0 to 192.168.255.255 with a subnet mask of 255.255.255.0.  
These suggested IP addresses are part of a group of IP addresses that have been  
set aside specially for use ‘in house’ only.  
Solving Fabric  
Formation Problems  
If you are having problems with correctly forming a fabric, first ensure that  
Spanning Tree is enabled. If it is enabled, do the following:  
1 Power off all units in the fabric.  
2 Check all the cable connections in the fabric.  
3 Check the ports have been enabled as fabric ports.  
4 Power on all units in the fabric.  
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54  
CHAPTER 4: PROBLEM SOLVING  
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PIN-OUTS  
A
Null Modem Cable  
RJ-45 to RS-232 25-pin  
Switch 5500  
PC/Terminal  
Cable connector: RJ-45 female  
Cable connector: 25-pin male/female  
only required if screen  
Screen  
TxD  
RxD  
Ground  
RTS  
Shell  
1
3
2
7
4
20  
Screen  
RxD  
3
2
5
7
8
always required  
TxD  
Ground  
RTS  
DTR  
CTS  
required for handshake  
DSR  
DCD  
DTR  
6
1
4
5
6
8
CTS  
DSR  
DCD  
PC-AT Serial Cable  
RJ-45 to 9-pin  
PC-AT Serial Port  
Cable connector: 9-pin female  
Cable connector: RJ-45 female  
only required if screen  
Screen  
DTR  
TxD  
RxD  
CTS  
Ground  
DSR  
RTS  
Shell  
Shell  
Screen  
DCD  
RxD  
TxD  
DTR  
Ground  
DSR  
RTS  
Required for handshake  
4
3
2
8
5
6
7
1
1
2
3
4
5
6
7
8
Always required  
required for handshake  
always required  
required for handshake  
DCD  
CTS  
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56  
APPENDIX A: PIN-OUTS  
Modem Cable  
RJ-45 to RS-232 25-pin  
Cable connector: RJ-45 female  
RS-232 Modem Port  
Cable connector: 25-pin male  
Screen  
TxD  
RxD  
RTS  
CTS  
DSR  
Ground  
DCD  
DTR  
Shell  
1
2
3
4
5
6
7
Screen  
TxD  
RxD  
RTS  
CTS  
DSR  
Ground  
DCD  
DTR  
3
2
7
8
6
5
1
4
8
20  
Ethernet Port RJ-45  
Pin Assignments  
10/100 and 1000BASE-T RJ-45 connections.  
Table 10 Pin assignments  
Pin Number  
10/100  
1000  
Ports configured as MDI  
1
2
3
4
5
6
7
8
Transmit Data +  
Transmit Data −  
Receive Data +  
Not assigned  
Not assigned  
Receive Data −  
Not assigned  
Not assigned  
Bidirectional Data A+  
Bidirectional Data A−  
Bidirectional Data B+  
Bidirectional Data C+  
Bidirectional Data C−  
Bidirectional Data B−  
Bidirectional Data D+  
Bidirectional Data D−  
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Ethernet Port RJ-45 Pin Assignments  
57  
Table 11 Pin assignments  
Pin Number  
10/100  
1000  
Ports configured as MDIX  
1
2
3
4
5
6
7
8
Receive Data +  
Bidirectional Data B+  
Bidirectional Data B−  
Bidirectional Data A+  
Bidirectional Data A−  
Bidirectional Data D+  
Bidirectional Data D−  
Bidirectional Data C+  
Bidirectional Data C−  
Receive Data −  
Transmit Data +  
Not assigned  
Not assigned  
Transmit Data −  
Not assigned  
Not assigned  
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58  
APPENDIX A: PIN-OUTS  
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TECHNICAL SPECIFICATIONS  
B
Switch 4500G 24-Port  
Physical Dimensions  
Height: 44 mm (1.7 in.) x Width: 440 mm  
(17.3 in.) x Depth: 274 mm (10.8 in.)  
Weight: 4.4kg (9.72 Ibs)  
Environmental  
Requirements  
Operating Temperature  
Storage Temperature  
Operating Humidity  
Standards  
0 ° to 40 °C (32 ° to 104 °F)  
10 ° to +70 °C (14 ° to 158 °F)  
95% non-condensing  
EN60068 to 3Com schedule (Package testing: paras  
2.1, 2.2, 2.30, and 2.32. Operational testing: paras  
2.1, 2.2, 2.30 and 2.13).  
Safety  
Agency Certifications  
UL 60950-1, EN 60950-1, CSA 22.2 No.  
60950-1, IEC 60950-1.  
EMC  
Emissions  
CISPRR 22 Class A, EN55022 Class A, FCC Part  
15 Subpart B Class A,  
ICES-003 Class A, EN61000-3-2, EN61000-3-3  
EN 55024  
Immunity  
Heat Dissipation  
Power Supply (AC)  
Line Frequency  
Input Voltage  
80 watts maximum (275 BTU/hour maximum)  
50/60Hz  
100–240 VAC  
1.5A (amps) maximum  
Current Rating  
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60  
APPENDIX B: TECHNICAL SPECIFICATIONS  
Switch 4500G 48-Port  
Physical Dimensions  
Height: 44 mm (1.7 in.) x Width: 440 mm (17.3 in.) x  
Depth: 274 mm (10.8 in.)  
Weight: 4.7kg (10.9 lbs)  
Environmental  
Requirements  
Operating Temperature  
Storage Temperature  
Operating Humidity  
Standards  
0 ° to 40 °C (32 ° to 104 °F)  
10 ° to +70 °C (14 ° to 158 °F)  
95% non-condensing  
EN60068 to 3Com schedule (Package testing: paras  
2.1, 2.2, 2.30, and 2.32. Operational testing: paras 2.1,  
2.2, 2.30 and 2.13).  
Safety  
Agency Certifications  
UL 60950-1, EN 60950-1, CSA 22.2 No. 60950-1,  
IEC 60950-1.  
EMC  
Emissions  
CISPR 22 Class A, EN55022 Class A, FCC Part 15  
Subpart B Class A,  
ICES-003 Class A, VCCI Class A,  
EN61000-3-2, EN61000-3-3  
EN 55024  
Immunity  
Heat Dissipation  
Power Supply (AC)  
Line Frequency  
Input Voltage  
80 watts maximum (275 BTU/hour maximum)  
50/60Hz  
100–240 VAC  
2.0A (amps) maximum  
Current Rating  
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Switch 4500G PWR 24-Port  
61  
Switch 4500G PWR 24-Port  
Physical Dimensions  
Height: 44 mm (1.7 in.) x Width: 440 mm  
(17.3 in.) x Depth: 420mm (16.5 in.)  
Weight: 6.0kg (13.2 Ibs)  
Environmental  
Requirements  
Operating Temperature  
Storage Temperature  
Operating Humidity  
Standards  
0 ° to 40 °C (32 ° to 104 °F)  
10 ° to +70 °C (14 ° to 158 °F)  
95% non-condensing  
EN60068 to 3Com schedule (Package testing: paras  
2.1, 2.2, 2.30, and 2.32. Operational testing: paras  
2.1, 2.2, 2.30 and 2.13).  
Safety  
Agency Certifications  
UL 60950-1, EN 60950-1, CSA 22.2 No.  
60950-1, IEC 60950-1.  
EMC  
Emissions  
CISPRR 22 Class A, EN55022 Class A, FCC Part  
15 Subpart B Class A,  
ICES-003 Class A, EN61000-3-2, EN61000-3-3  
EN 55024  
Immunity  
Heat Dissipation  
Power Supply (AC)  
Line Frequency  
Input Voltage  
80 watts maximum (275 BTU/hour maximum)  
50/60Hz  
100–240 VAC  
Current Rating  
AC: 8.0 A (amps) maximum  
DC: 15.0 A maximum  
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62  
APPENDIX B: TECHNICAL SPECIFICATIONS  
witch 4500G PWR 48-Port  
Physical Dimensions  
Height: 44 mm (1.7 in.) x Width: 440 mm (17.3 in.) x  
Depth: 420mm (16.5 in.)  
Weight: 6.5kg (14.3 Ibs)  
Environmental  
Requirements  
Operating Temperature  
Storage Temperature  
Operating Humidity  
Standards  
0 ° to 40 °C (32 ° to 104 °F)  
10 ° to +70 °C (14 ° to 158 °F)  
95% non-condensing  
EN60068 to 3Com schedule (Package testing: paras  
2.1, 2.2, 2.30, and 2.32. Operational testing: paras 2.1,  
2.2, 2.30 and 2.13).  
Safety  
Agency Certifications  
UL 60950-1, EN 60950-1, CSA 22.2 No. 60950-1,  
IEC 60950-1.  
EMC  
Emissions  
CISPR 22 Class A, EN55022 Class A, FCC Part 15  
Subpart B Class A,  
ICES-003 Class A, VCCI Class A,  
EN61000-3-2, EN61000-3-3  
EN 55024  
Immunity  
Heat Dissipation  
Power Supply (AC)  
Line Frequency  
Input Voltage  
80 watts maximum (275 BTU/hour maximum)  
50/60Hz  
100–240 VAC  
Current Rating  
AC: 8.0 A (amps) maximum  
DC: 18.0 A maximum  
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Grounding Lead  
63  
Grounding Lead  
Safety Requirements The Grounding Cable (in PWR Units only) shall comply with  
the following safety standards:  
UL Subject 758, UL 1581 and CSA C22.2 No. 210  
UL VW-1 and CSA FT1 Vertical Flame Test  
Voltage Rating  
AWG  
600V  
18  
Insulation Thickness  
Insulation Colour  
0.4mm  
Green/Yellow  
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64  
APPENDIX B: TECHNICAL SPECIFICATIONS  
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OBTAINING SUPPORT FOR  
YOUR 3COM PRODUCTS  
C
3Com offers product registration, case management, and repair services  
through eSupport.3com.com. You must have a user name and password  
to access these services, which are described in this appendix.  
Register Your  
Product to Gain  
Service Benefits  
To take advantage of warranty and other service benefits, you must first  
register your product at:  
3Com eSupport services are based on accounts that are created or that  
you are authorized to access.  
Solve Problems  
Online  
3Com offers the following support tool:  
3Com Knowledgebase — Helps you to troubleshoot 3Com  
products. This query-based interactive tool is located at:  
It contains thousands of technical solutions written by 3Com support  
engineers.  
Purchase Extended  
Warranty and  
Professional  
Services  
To enhance response times or extend your warranty benefits, you can  
purchase value-added services such as 24x7 telephone technical support,  
software upgrades, onsite assistance, or advanced hardware  
replacement.  
Experienced engineers are available to manage your installation with  
minimal disruption to your network. Expert assessment and  
implementation services are offered to fill resource gaps and ensure the  
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66  
APPENDIX C: OBTAINING SUPPORT FOR YOUR 3COM PRODUCTS  
success of your networking projects. For more information on 3Com  
Extended Warranty and Professional Services, see:  
Contact your authorized 3Com reseller or 3Com for additional product  
and support information. See the table of access numbers later in this  
appendix.  
Access Software  
Downloads  
You are entitled to bug fix / maintenance releases for the version of  
software that you initially purchased with your 3Com product. To obtain  
access to this software, you need to register your product and then use  
the Serial Number as your login. Restricted Software is available at:  
To obtain software releases that follow the software version that you  
originally purchased, 3Com recommends that you buy an Express or  
Guardian contract, a Software Upgrades contract, or an equivalent  
support contract from 3Com or your reseller. Support contracts that  
include software upgrades cover feature enhancements, incremental  
functionality, and bug fixes, but they do not include software that is  
released by 3Com as a separately ordered product. Separately orderable  
software releases and licenses are listed in the 3Com Price List and are  
available for purchase from your 3Com reseller.  
Contact Us  
3Com offers telephone, internet, and e-mail access to technical support  
and repair services. To access these services for your region, use the  
appropriate telephone number, URL, or e-mail address from the table in  
the next section.  
Telephone Technical To obtain telephone support as part of your warranty and other service  
Support and Repair benefits, you must first register your product at:  
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Contact Us  
67  
When you contact 3Com for assistance, please have the following  
information ready:  
Product model name, part number, and serial number  
A list of system hardware and software, including revision level  
Diagnostic error messages  
Details about recent configuration changes, if applicable  
To send a product directly to 3Com for repair, you must first obtain a  
return materials authorization number (RMA). Products sent to 3Com  
without authorization numbers clearly marked on the outside of the  
package will be returned to the sender unopened, at the senders  
expense. If your product is registered and under warranty, you can obtain  
an RMA number online at http://eSupport.3com.com/. First-time users  
must apply for a user name and password.  
Telephone numbers are correct at the time of publication. Find a current  
directory of 3Com resources by region at:  
Country  
Telephone Number  
Country  
Telephone Number  
Asia, Pacific Rim — Telephone Technical Support and Repair  
Australia  
Hong Kong  
India  
Indonesia  
Japan  
Malaysia  
New Zealand  
1800 075 316  
2907 0456  
000 800 440 1193  
001 803 852 9825  
03 3507 5984  
1800 812 612  
0800 450 454  
Philippines  
1800 144 10220 or  
029003078  
800 810 0504  
800 616 1463  
080 698 0880  
00801 444 318  
001 800 441 2152  
PR of China  
Singapore  
South. Korea  
Taiwan  
Thailand  
Pakistan Call the U.S. direct by dialing 00 800 01001, then dialing 800 763 6780  
Sri Lanka Call the U.S. direct by dialing 02 430 430, then dialing 800 763 6780  
Vietnam Call the U.S. direct by dialing 1 201 0288, then dialing 800 763 6780  
You can also obtain non-urgent support in this region at this email address [email protected]  
Or request a return material authorization number (RMA) by FAX using this number: +61 2 9937 5048, or send an  
email at this email address: [email protected]  
Europe, Middle East, and Africa — Telephone Technical Support and Repair  
From anywhere in these regions not listed below, call: +44 1442 435529  
From the following countries, call the appropriate number:  
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68  
APPENDIX C: OBTAINING SUPPORT FOR YOUR 3COM PRODUCTS  
Country  
Telephone Number  
Country  
Telephone Number  
Austria  
Belgium  
0800 297 468  
0800 71429  
800 17309  
0800 113153  
0800 917959  
0800 182 1502  
06800 12813  
1 800 553 117  
180 945 3794  
800 879489  
Luxembourg  
Netherlands  
Norway  
800 23625  
0800 0227788  
800 11376  
00800 4411 357  
800 831416  
0800 995 014  
900 938 919  
020 795 482  
0800 553 072  
0800 096 3266  
Denmark  
Finland  
France  
Germany  
Hungary  
Ireland  
Israel  
Poland  
Portugal  
South Africa  
Spain  
Sweden  
Switzerland  
U.K.  
Italy  
You can also obtain support in this region using this URL: http://emea.3com.com/support/email.html  
You can also obtain non-urgent support in this region at these email addresses:  
Technical support and general requests: [email protected]  
Return material authorization: [email protected]  
Contract requests: [email protected]  
Latin America — Telephone Technical Support and Repair  
Antigua  
Argentina  
Aruba  
Bahamas  
Barbados  
Belize  
Bermuda  
Bonaire  
Brazil  
Cayman  
Chile  
Colombia  
Costa Rica  
Curacao  
Ecuador  
Dominican Republic  
1 800 988 2112  
0 810 444 3COM  
1 800 998 2112  
1 800 998 2112  
1 800 998 2112  
52 5 201 0010  
1 800 998 2112  
1 800 998 2112  
0800 13 3COM  
Guatemala  
Haiti  
Honduras  
Jamaica  
Martinique  
Mexico  
Nicaragua  
Panama  
Paraguay  
Peru  
Puerto Rico  
Salvador  
Trinidad and Tobago  
Uruguay  
Venezuela  
Virgin Islands  
AT&T +800 998 2112  
57 1 657 0888  
AT&T +800 998 2112  
1 800 998 2112  
571 657 0888  
01 800 849CARE  
AT&T +800 998 2112  
AT&T +800 998 2112  
54 11 4894 1888  
AT&T +800 998 2112  
1 800 998 2112  
AT&T +800 998 2112  
1 800 998 2112  
AT&T +800 998 2112  
AT&T +800 998 2112  
57 1 657 0888  
1 800 998 2112  
AT&T +800 998 2112  
AT&T +800 998 2112  
AT&T +800 998 2112  
1 800 998 2112  
AT&T +800 998 2112  
AT&T +800 998 2112  
You can also obtain support in this region in the following ways:  
Spanish speakers, enter the URL: http://lat.3com.com/lat/support/form.html  
Portuguese speakers, enter the URL: http://lat.3com.com/br/support/form.html  
English speakers in Latin America, send e-mail to: [email protected]  
US and Canada — Telephone Technical Support and Repair  
All locations:  
All 3Com products:  
1 800 876 3266  
Published 1 April 2005  
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3COM NETWORK MANAGEMENT  
D
3Com has a range of network management applications to address  
networks of all sizes and complexity, from small and medium businesses  
3Com Network Director  
3Com Network Access Manager  
3Com Enterprise Management Suite  
Integration Kit with HP OpenView Network Node Manager  
Details of these and other 3Com Network Management Solutions can be  
3Com Network  
Supervisor  
3Com® Network Supervisor (3NS) is an easy-to-use management  
application that graphically discovers, maps, and monitors the network  
and links. It maps devices and connections so you can easily:  
Monitor stress levels  
Set thresholds and alerts  
View network events  
Generate reports in user-defined formats  
Launch embedded device configuration tools  
3NS is configured with intelligent defaults and the ability to detect  
network configuration problems. It can also offer optimization  
suggestions, making this application ideal for network managers with all  
levels of experience.  
To find out more about 3Com Network Supervisor and to download a  
trial version, go to: www.3com.com/3ns  
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70  
APPENDIX D: 3COM NETWORK MANAGEMENT  
3Com Network  
Director  
3Com Network Director (3ND) is a standalone application that allows you  
to carry out key management and administrative tasks on midsize  
networks. By using 3ND you can discover, map, and monitor all your  
3Com devices on the network. It simplifies tasks such as backup and  
restore for 3Com device configurations as well as firmware and agent  
upgrades. 3ND makes it easy to roll out network-wide configuration  
changes with its intelligent VLAN configuration tools and the powerful  
template based configuration tools. Detailed statistical monitoring and  
historical reporting give you visibility into how your network is  
performing.  
To find out more about how 3Com Network Director can help you  
manage your 3Com network and to download a trial version, go to:  
3Com Network  
Access Manager  
3Com Network Access Manager is installed seamlessly into Microsoft  
Active Directory and Internet Authentication Service (IAS). It simplifies the  
task of securing the network perimeter by allowing the administrator to  
easily control network access directly from the “Users and Computers”  
console in Microsoft Active Directory. With a single click, a user (or even  
an entire department) can be moved to a different VLAN, or a computer  
can be blocked from connecting to the network.  
3Com Network Access Manager leverages the advanced desktop security  
capabilities of 3Com switches and wireless access points (using IEEE  
802.1X or RADA desktop authentication) to control both user and  
computer access to the network.  
To find out more about 3Com Network Access Manager, go to:  
www.3com.com/NAM  
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3Com Enterprise Management Suite  
71  
3Com Enterprise  
Management Suite  
3Com Enterprise Management Suite (EMS) delivers comprehensive  
management that is flexible and scalable enough to meet the needs of  
the largest enterprises and advanced networks.  
This solution provides particularly powerful configurations and change  
control functions, including the ability to:  
Customize scheduled bulk operations  
Create a detailed audit trail of all network changes  
Support multiple distributed IT users with varying access levels and  
individualized network resource control  
The client-server offering operates on Windows and UNIX (Linux and  
Solaris) systems.  
3Com EMS is available in four packages, varying in the maximum number  
of devices actively managed. These include SNMP-capable devices such as  
switches, routers, security switches, the 3Com VCX™ IP Telephony server,  
and wireless access points:  
Up to 250 devices  
Up to 1,000 devices  
Up to 5,000 devices  
An unlimited number of devices  
To find out more about 3Com Enterprise Management Suite, go to:  
Integration Kit with  
HP OpenView  
Network Node  
Manager  
3Com Integration Kit for HP OpenView Network Node Manager offers  
businesses the option of managing their 3Com network directly from HP  
OpenView Network Node Manager. The kit includes Object IDs, icons,  
MIBs, and traps for 3Com devices. The package supports both Windows  
platforms and UNIX or Solaris platforms. It can be installed as a  
standalone plug-in to HP OpenView, or used with a 3Com management  
application such as 3Com Enterprise Management Suite (EMS).  
To find out more about 3Com Integration Kit for HP OpenView Network  
Node Manager, go to: www.3com.com/hpovintkit  
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72  
APPENDIX D: 3COM NETWORK MANAGEMENT  
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REDUNDANT POWER SUPPLY  
SAFETY INFORMATION  
E
Important Safety Information  
WARNING: This device has more than one power input. Disconnect all  
power inputs to power off this device.  
WARNING: The installation of the Redundant Power Supply (RPS) should  
only be carried out by properly trained and qualified personnel.  
WARNING: These instructions must be read in conjunction with the RPS  
flyer and the safety and installation instructions supplied with your RPS.  
WARNING: When powering any Switch 4210 from an RPS, the unit must  
be earthed (grounded). This can be achieved by either connecting the  
power cord to the unit or by connecting the earth terminal on the rear of  
the unit to a reliable electrical earth, or by connecting both. It must be  
ensured that the earth connection is made before connecting the DC  
supply from the RPS.  
WARNING: Any RPS must be approved as an unearthed SELV output in  
accordance with IEC 60950-1/UL 60950-1/EN 60950-1.  
WARNING: RPS Manufacturers’ recommendations must be followed  
when connecting the cable to the RPS.  
WARNING: Ensure that the circuit breaker in the RPS is in the open (off)  
position when connecting the cable to the RPS.  
WARNING: You must ensure that the positive terminal on the Switch is  
connected to the positive (common) terminal of the RPS and that the  
negative terminal on the Switch is connected to the negative (circuit  
breaker) terminal of the RPS.  
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74  
APPENDIX E: REDUNDANT POWER SUPPLY SAFETY INFORMATION  
WARNING: Ensure that the circuit breaker in the RPS is in the open (off)  
position when connecting the RPS cable and connector to the Switch.  
WARNING: Do not use a standard 'positive-earthed' -48V redundant  
power system suitable for use with telecommunications equipment with  
the 3Com Power-over-Ethernet (PoE) network switches. In order to meet  
the IEEE 802.3af (PoE) specification, the -48V output must be isolated  
from earth (ground) and meet the isolation requirements in that  
specification.  
L’information de Sécurité Importante  
AVERTISSEMENT: Ce périphérique comporte plusieurs entrées  
d'alimentation. Déconnectez toutes les entrées d'alimentation afin de le  
mettre hors tension.  
AVERTISSEMENT: L'installation du RPS (Redundant Power Supply) ne  
doit être confiée qu'à un personnel formé et qualifié.  
AVERTISSEMENT: Ces instructions doivent être lues conjointement avec  
les instructions d'installation et les consignes de sécurité qui  
accompagnent le RPS.  
AVERTISSEMENT: Lorsqu'un commutateur Switch 4210 est alimenté par  
un module RPS, l'unité doit être mise à la terre. Pour cela, branchez le  
cordon d'alimentation à l'unité ou branchez la borne de mise à la terre  
située à l'arrière de l'unité à une prise de terre fiable, ou procédez aux  
deux raccordements. Assurez-vous que l'unité est mise à la terre avant de  
raccorder l'alimentation CC du RPS.  
AVERTISSEMENT: Le RPS doit être approuvé en tant que sortie SELV non  
reliée à la terre, conformément à la norme IEC 60950-1/UL 60950-1/EN  
60950-1.  
AVERTISSEMENT: Ces instructions doivent être lues conjointement avec  
les caractéristiques de l'alimentation CC du Switch 4210 fournies en  
annexe C, Spécifications techniques.  
AVERTISSEMENT: Vous devez respecter les recommandations du  
fabricant lors du branchement du câble au module RPS.  
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Wichtige Sicherheitsinformationen  
75  
AVERTISSEMENT: Assurez-vous que le disjoncteur du RPS est ouvert (off)  
lors du branchement du câble au RPS.  
AVERTISSEMENT: Assurez-vous de brancher la borne positive du  
commutateur à la borne positive (commune) du RPS, et la borne négative  
du commutateur à la borne négative (disjoncteur) du RPS.  
AVERTISSEMENT: Assurez-vous que le disjoncteur du RPS est ouvert (off)  
lors du branchement du câble et du connecteur du RPS au commutateur  
3Com.  
AVERTISSEMENT : N’utilisez pas de système standard d’alimentation  
redondante à 48 V relié à la terre convenant aux équipements de  
télécommunication avec les commutateurs réseau PoE  
(Power-Over-Ethernet) de 3Com. En vue de respecter la spécification IEEE  
802.3af (PoE), la sortie 48 V doit être isolée de la terre (masse) et se  
conformer aux exigences d’isolation de cette spécification.  
Wichtige Sicherheitsinformationen  
VORSICHT: Dieses Gerät besitzt mehrere Eingänge zur Stromversorgung.  
Trennen Sie das Gerät zum Ausschalten von allen Stromquellen.  
VORSICHT: Die RPS (Redundant Power Supply, redundante  
Stromversorgung) darf nur von entsprechend geschultem und  
qualifiziertem Fachpersonal installiert werden.  
VORSICHT: Diese Anleitungen müssen im Zusammenhang mit den  
Sicherheitshinweisen und Installationsanleitungen zu Ihrer RPS gelesen  
werden.  
VORSICHT: Bei der Stromversorgung eines Switch 4210 über eine RPS  
muss das Gerät geerdet sein. Hierfür kann entweder das Netzkabel an  
das Gerät angeschlossen werden oder die Erdungsklemme an der  
Rückseite des Geräts mit einer zuverlässigen elektrischen Erdung  
verbunden werden oder beides. Es ist sicherzustellen, dass die  
Erdungsverbindung vor dem Anschließen der von der RPS bereitgestellten  
Gleichstromversorgung hergestellt wird.  
VORSICHT: Jede RPS muss als nicht geerdetes SELV-Ausgangsgerät  
gemäß IEC 60950-1/UL 60950-1/EN 60950-1 zugelassen sein.  
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76  
APPENDIX E: REDUNDANT POWER SUPPLY SAFETY INFORMATION  
VORSICHT: Diese Anleitungen müssen im Zusammenhang mit den  
Eigenschaften des Gleichstrom-Versorgungseingangs des Switch 4210  
gelesen werden, die in Anhang C, "Technische Daten", aufgeführt sind.  
VORSICHT: Beim Anschließen des Kabels an die RPS sind die  
Empfehlungen des Herstellers zu beachten.  
VORSICHT: Stellen Sie sicher, dass sich der Schutzschalter an der RPS  
beim Anschließen des Kabels an die RPS in der geöffneten Stellung (Aus)  
befindet.  
VORSICHT: Stellen Sie auf jeden Fall sicher, dass die positive Klemme am  
Switch an die positive (gemeinsame) Klemme der RPS und die negative  
Klemme am Switch an die negative (gemeinsame) Klemme der RPS  
angeschlossen wird.  
VORSICHT: Stellen Sie sicher, dass sich der Schutzschalter an der RPS  
beim Anschließen des RPS-Kabels und des Steckers des 3Com Switch in  
der geöffneten Stellung (Aus) befindet.  
VORSICHT: Verwenden Sie mit den 3Com PoE-Netzwerkswitches kein  
"positiv geerdetes" redundantes Standard-Netzsystem mit -48 Volt, wie  
es für Telekommunikationsgeräte geeignet ist. Um den IEEE 802.3af  
(PoE)-Spezifikationen zu entsprechen, muss der -48 Volt Ausgang erdfrei  
sein und die Isolierungsanforderungen dieser Spezifikation erfüllen.  
Información de Seguridad Importante  
ADVERTENCIA: Este dispositivo dispone de más de una entrada de  
alimentación. Desconecte todas las entradas de alimentación del  
dispositivo.  
ADVERTENCIA: La instalación del sistema de alimentación superflua  
(RPS) sólo debería llevarla a cabo personal cualificado y con la debida  
formación.  
ADVERTENCIA: Estas instrucciones deben leerse junto con las  
instrucciones de instalación y seguridad que se facilitan con el sistema  
RPS.  
ADVERTENCIA: al encender cualquier Switch 4210 desde un RPS, la  
unidad debe contar con una toma de tierra (conexión a tierra). Esto se  
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Información de Seguridad Importante  
77  
puede conseguir conectando el cable de alimentación de la unidad o bien  
conectando el terminal de tierra en la parte posterior de la unidad a una  
toma de tierra fiable, o conectando ambas. Deberá asegurarse de que la  
conexión a tierra se realiza antes de conectar el suministro de CC del RPS.  
ADVERTENCIA: Todos los RPS deben estar homologados como salidas  
SELV sin toma de tierra según IEC 60950-1/UL 60950-1/EN 60950-1.  
ADVERTENCIA: Estas instrucciones deben leerse junto con las  
características de la entrada de suministro de CC del Switch 4210 del  
Apéndice C, Especificaciones técnicas.  
ADVERTENCIA: al conectar el cable al RPS deberán seguirse las  
recomendaciones del fabricante.  
ADVERTENCIA: asegúrese de que el disyuntor del RPS se encuentra en la  
posición de abierto (desactivado) al conectar el cable al RPS.  
ADVERTENCIA: deberá asegurarse de que el terminal positivo del Switch  
está conectado al terminal positivo (común) del RPS, y de que el terminal  
negativo del Switch está conectado al terminal negativo (disyuntor) del  
RPS.  
ADVERTENCIA: asegúrese de que el disyuntor del RPS se encuentra en la  
posición de abierto (desactivado) al conectar el cable del RPS y el conector  
al Switch 3Com.  
ADVERTENCIA: No utilice un sistema de alimentación eléctrica  
redundante de -48 V con conexión a tierra positiva, adecuado para su uso  
con equipos de telecomunicaciones, con los conmutadores de red  
alimentados a través de Ethernet (PoE) de 3Com. Para cumplir con la  
especificación IEEE 802.3af (PoE), la salida de -48V debe estar aislada de  
la de tierra y cumplir con los requisitos de aislamiento de dicha  
especificacion.  
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78  
APPENDIX E: REDUNDANT POWER SUPPLY SAFETY INFORMATION  
Importanti Informazioni di Sicurezza  
AVVERTENZA: Il dispositivo presenta più punti di alimentazione. Per  
spegnere il dispositivo, scollegare tutti i punti di alimentazione.  
AVVERTENZA: le operazioni di installazione dell'RPS (Redundant Power  
Supply) devono essere eseguite esclusivamente da personale qualificato e  
opportunamente addestrato.  
AVVERTENZA: queste istruzioni devono essere lette insieme alle  
istruzioni di sicurezza e installazione fornite con l'RPS.  
AVVERTENZA: se si accende uno Switch 4210 da un RPS, l'unità deve  
disporre di messa a terra. Per accendere lo switch, è possibile collegare il  
cavo di alimentazione all'unità, collegare il terminale di terra situato sul  
retro dell'unità a una presa elettrica di terra sicura oppure collegarli  
entrambi. Prima di collegare l'alimentazione CC dell'RPS, è necessario  
verificare la messa a terra.  
AVVERTENZA: tutti gli RPS devono essere approvati come dispositivi di  
uscita SELV non messi a terra in conformità con le norme IEC 60950-1/UL  
60950-1/EN 60950-1.  
AVVERTENZA: queste istruzioni devono essere lette insieme ai valori di  
ingresso dell'alimentazione CC dello Switch 4210 che vengono forniti  
nell'Appendice C, Specifiche tecniche.  
AVVERTENZA: quando si collega il cavo all'RPS, si consiglia di rispettare  
le raccomandazioni fornite dal fabbricante.  
AVVERTENZA: durante il collegamento del cavo all'RPS, verificare che il  
salvavita dell'RPS si trovi in posizione Acceso (spento).  
AVVERTENZA: è necessario verificare che il polo positivo sullo switch sia  
collegato al polo positivo (comune) dell'RPS e che il polo negativo sullo  
switch sia collegto al polo negativo (salvavita) dell'RPS.  
AVVERTENZA: prima di collegare il cavo RPS e il connettore allo switch  
3Com, verificare che il salvavita si trovi in posizione Acceso (spento).  
AVVERTENZA: Non usare con gli switch di rete PoE  
(Power-over-Ethernet) di 3Com sistemi di alimentazione ridondante  
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Wa¿ne informacje o zabezpieczeniach  
79  
standard con 'messa a terra positiva' a -48 V normalmente usati con gli  
apparecchi di telecomunicazione. Per soddisfare lo standard IEEE 802.3af  
(PoE), l'uscita a -48V deve essere isolata da terra e soddisfare i requisiti  
d'isolamento per quello standard.  
Ważne informacje o zabezpieczeniach  
OSTRZEŻENIE: To urządzenie ma kilka punktów podłączenia zasilania.  
Aby wyłączyć urządzenie, należy odłączyć wszystkie punkty zasilania.  
OSTRZEŻENIE: Instalacja zasilacza nadmiarowego (RPS) powinna być  
wykonywana przez odpowiednio przeszkolony i wykwalifikowany person-  
el.  
OSTRZEŻENIE: Te instrukcje należy przeczytać razem z instrukcjami  
dotyczącymi bezpieczeństwa i instalacji dostarczonymi z systemem zasi-  
lania nadmiarowego.  
OSTRZEŻENIE: Jeśli dowolny przełącznik Switch 4210 jest zasilany z  
zasilacza RPS, urządzenie musi być uziemione. Można to uzyskać przez  
podłączenie przewodu zasilającego do urządzenia lub przez podłączenie  
końcówki uziemienia z tyłu urządzenia do dobrego elementu uziemi-  
ającego. Należy upewnić się, że urządzenie zostało uziemione przed  
podłączeniem zasilacza prądu stałego do zasilacza RPS.  
OSTRZEŻENIE: Wszystkie zasilacze RPS muszą mieć certyfikat nieuzi-  
emionego źródła zasilania SELV zgodny z normami IEC 60950-1/UL  
60950-1/EN 60950-1.  
OSTRZEŻENIE: Te instrukcje należy przeczytać razem z charaktery-  
styką zasilającego prądu stałego przełącznika Switch 4210 opisaną w  
Dodatku C, Specyfikacja techniczna.  
OSTRZEŻENIE: Podczas podłączania kabla do zasilacza RPS należy  
przestrzegać zaleceń producenta.  
OSTRZEŻENIE: Podczas podłączania kabla do zasilacza RPS należy  
upewnić się, że wyłącznik w zasilaczu jest w pozycji otwartej (wyłączony).  
OSTRZEŻENIE: Należy upewnić się, że końcówka dodatnia przełącznika  
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80  
APPENDIX E: REDUNDANT POWER SUPPLY SAFETY INFORMATION  
jest podłączona do dodatniej (wspólnej) końcówki zasilacza RPS, a ujem-  
na końcówka przełącznika jest podłączona do ujemnej końcówki  
(wyłącznika) zasilacza RPS.  
OSTRZEŻENIE: Nie używać standardowego „dodatnio uziemionego”  
-48-woltowego nadmiarowego systemu zasilania odpowiedniego przy  
użyciu ze sprzętem telekomunikacyjnym wraz z przełącznikami siecio-  
wymi firmy 3Com w technologii Power-over-Ethernet (PoE). Aby spełnić  
wymagania specyfikacji IEEE 802.3af (PoE), -48-woltowy przewodnik  
wyjścia musi być odizolowany od ziemi (uziomu) i spełnił wymagania  
wykonania izolacji opisanymi w tej specyfikacji.  
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Regulatory Notices  
81  
Regulatory Notices  
FCC Statement  
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 when the equipment is operated in a commercial environment. 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. Operation of this equipment in a residential area is likely  
to cause harmful interference to radio communications, in which case the user will be required to correct the  
interference at their own expense.  
Information to the  
User  
If this equipment does cause 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 the receiving antenna.  
Relocate the equipment with respect to the receiver.  
Move the equipment away from the receiver.  
Plug the equipment into a different outlet so that equipment and receiver are on different branch circuits.  
How to identify and resolve radio-TV interference problems  
This booklet is available from the U.S. Government Printing Office, Whashington, DC 20402, Stock No.  
004-000-00345-4.  
In order to meet FCC emissions limits, this equipment must be used only with cables which comply with IEEE  
802.3.  
ICES Statement  
This Class A digital apparatus complies with Canadian ICES-003.  
Cet appareil numérique de la classe A respecte Class A est conforme a la norme NMB-003 du Canada.  
CE Statements (Europe)  
EU Representative:  
3Com Europe Limited  
Peoplebuilding 2, Peoplebuilding Estate  
Maylands Avenue  
Hemel Hempstead, Hertfordshire  
HP2 4NW  
United Kingdom  
This product complies with the European Low Voltage Directive 73/23/EEC as amended by European Directive  
93/68/EEC and EMC Directive 2004/108/EC.  
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 adequate measures.  
A copy of the signed Declaration of Conformity can be downloaded from the Product Support web page for  
VCCI Statement  
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82  
APPENDIX E: REDUNDANT POWER SUPPLY SAFETY INFORMATION  
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