3Com Switch 4210 18 PORT User Manual

3Com® Switch 4210 Family  
Getting Started  
Switch 4210 PWR 9-Port  
Switch 4210 PWR 18-Port  
Switch 4210 PWR 26-Port  
Switch 4210 9-Port  
Switch 4210 18-Port  
Switch 4210 26-Port  
Switch 4210 52-Port  
Part Number: 10016119 Rev. AB  
Published: January, 2008  
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ABOUT THIS GUIDE  
Download the Latest  
Software and  
Documentation for  
Your 3Com Switch  
Thank you for purchasing a 3Com Switch 4210. As part of our commitment to  
bringing you the most capable and dependable network equipment, 3Com offers  
free software maintenance updates and documentation updates on our website.  
To obtain the most up-to-date operating software and user documentation for the  
Switch 4210, point your web browser to: www.3Com.com/4210and select the  
“Support and Registration” link.  
You must register your 3Com switch before receiving 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 LANs  
(Local Area Networks).  
Release Notes The Release Notes provide important information about the current software  
release, including new features, modifications, and known problems. 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 guides and release notes are available in Adobe Acrobat Reader Portable  
Document Format (PDF) on the 3Com World Wide Web site at  
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  
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6 ●  
3Com Switch 4210 Family  
Command Reference  
Related  
Documentation  
In addition to this guide, the Switch 4210 documentation set includes the following:  
3Com Switch 4210 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 4210 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.  
Release Notes  
These notes provide information about the current software release, including  
new features, modifications, and known problems. The release notes are supplied  
in hard copy with your switch.  
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PRODUCT INTRODUCTION  
1
Overview  
The 3Com Switch 4210 Family provides high-performance, high-density,  
easy-to-install, NMS-manageable intelligent Ethernet switches that support  
wire-speed Layer 2 switching.  
Three of the Switch 4210 Family models support industry standard IEEE 802.3af  
Power over Ethernet (PoE). Figure 1 displays these models and Table 1 provides a  
description of their features.  
Figure 1 Power over Ethernet models  
Table 1 Power over Ethernet models  
Number of  
10/100 Mbps  
ports  
Number of 1000 Number of  
Mbps uplink  
ports  
Console  
ports  
Model  
Power supply  
Switch 4210 PWR AC input  
9-port  
8
One Combo port  
1
Switch 4210 PWR AC input  
18-port  
16  
24  
Two Combo ports  
1
Switch 4210 PWR AC or RPS DC  
1 (on rear)  
26-port  
input  
Three of the Switch 4210 Family models are available for simple connectivity  
without PoE. Figure 2 displays these models and Table 2 describes its features.  
Figure 2 Non Power over Ethernet models  
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8
CHAPTER 1: PRODUCT INTRODUCTION  
Table 2 Non Power over Ethernet models  
Number of  
Number of  
10/100 Mbps Number of 1000 Mbps Console  
Model  
Power supply ports  
uplink ports  
ports  
Switch 4210  
9-port  
AC input  
AC input  
AC input  
AC input  
8
One Combo port  
1
Switch 4210  
18-port  
16  
24  
48  
Two Combo ports  
Two Combo ports  
1
1
1
Switch 4210  
26-port  
Switch 4210  
52-port (not  
shown)  
Two 10/100/100 ports  
Two SFP ports  
Introduction to the  
Switch 4210 Family  
PWR Switches  
Switch 4210 9-port PWR Front panel  
Each Switch 4210 9-port PWR unit provides eight 10/100Base-TX autosensing  
Ethernet ports, one 10/100/1000Base-T Ethernet port, one 100/1000Base SFP  
ports, and one Console port. The SFP port and the 10/100/1000BASE-T Ethernet  
port form a Combo port. You can use either the SFP port or the  
10/100/1000BASE-T Ethernet port at one time.  
Figure 3 shows the front panel of a Switch 4210 9-port PWR.  
Figure 3 Front panel of a Switch 4210 9-port PWR  
(1)  
(2)  
(3)  
(4)  
1
4
5
8
(8)  
(7) (6) (5)  
(1) 10/100Base-TX autosensing Ethernet port status LED  
(2) Link LED for Combo port  
(4) Power LED (PWR)  
(3) Console port  
(5) A/L LED  
(6) D/S LED  
(7) Mode button  
(8) Active LED for Combo port  
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Introduction to the Switch 4210 Family PWR Switches  
9
Rear panel  
Figure 4 The Switch 4210 9-port PWR models rear panel  
(1)  
(1) AC power socket  
(
Side panel  
Each Switch 4210 9-port PWR provides a security slot through which you can lock  
the device together with an irremovable object to prevent theft. The security slot is  
located on the left side panel, as shown in Figure 7.  
If the left screw hole above the security slot is used, the security slot cannot be  
used.  
n
Power system  
Switch 4210 PWR 9-port units are able to power attached devices using standard  
802.3af Power over Ethernet. The total available power for PoE on this model is  
70W, enough to power four ports at full 15.4W required of the PoE standard.  
Each Switch 4210 9-port PWR unit supports AC input.  
Rated Voltage Range: 100 VAC to 240 VAC, 50 Hz/60 Hz  
Input voltage range: 90 VAC to 264 VAC, 47 HZ to 63 Hz  
Cooling system  
The Switch 4210 9-port PWR units each run two fans for heat dissipation.  
Switch 4210 PWR Front panel  
18-port  
Switch 4210s 18-port PWR each provide sixteen 10/100Base-TX autosensing  
Ethernet ports, two 10/100/1000Base-T Ethernet ports, two 100/1000Base SFP  
ports, and one Console port. Each SFP port and the corresponding  
10/100/1000BASE-T Ethernet port form a Combo port. For each Combo port,  
either the SFP port or the corresponding 10/100/1000BASE-T Ethernet port can be  
used at a time.  
Figure 5 shows the front panel of a Switch 4210 18-port PWR.  
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10  
CHAPTER 1: PRODUCT INTRODUCTION  
Figure 5 Front panel of a Switch 4210 18-port PWR  
(1)  
(2)  
(3)  
(4)  
(8)  
(7) (6)  
(5)  
(1) 10/100Base-TX autosensing Ethernet port status LED  
(2) Link LED for Combo port  
(4) Power LED (PWR)  
(3) Console port  
(5) A/L LED  
(6) D/S LED  
(7) Mode button  
(8) Active LED for Combo port  
Rear panel  
Figure 6 Rear panel of a Switch 4210 18-port PWR  
(1)  
(1) AC power socket  
Side panel  
Each Switch 4210 18-port PWR provides a security slot, through which you can  
lock the device together with an irremovable object to prevent theft. The security  
slot is located on the left side panel, as shown in Figure 7.  
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Introduction to the Switch 4210 Family PWR Switches  
11  
Figure 7 Security slot on left side panel of a Switch 4210 18-port PWR  
(1)  
(1): Security slot  
If the left screw hole above the security slot is used, the security slot cannot be  
used.  
n
Power system  
Switch 4210 18-port PWR units support AC input.  
Rated Voltage Range: 100 VAC to 240 VAC, 50 Hz/60 Hz  
Input voltage range: 90 VAC to 264 VAC, 47 Hz to 63 Hz  
Switch 4210 PWR 18-Port units are able to power attached devices using standard  
802.3af Power over Ethernet. The total available power for PoE on this model is  
135W; enough to power 8-Ports at full 15.4W required of the PoE standard.  
Cooling system  
Switch 4210s 18-port PWR each run two fans for heat dissipation.  
Switch 4210 PWR Front panel  
26-port  
The Switch 4210 26-port PWR model provides 24 10/100Base-TX autosensing  
Ethernet ports, two 10/100/1000Base-T Ethernet ports, two 100/1000Base SFP  
ports, and one Console port. Each SFP port and the corresponding  
10/100/1000BASE-T Ethernet port form a Combo port. For each Combo port, you  
can use either the SFP port or the corresponding 10/100/1000BASE-T Ethernet  
port at one time.  
Figure 8 shows the front panel of the Switch 4210 26-port PWR model.  
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12  
CHAPTER 1: PRODUCT INTRODUCTION  
Figure 8 The Switch 4210 26-port PWR models front panel  
(1) (2) (3) (4)  
(8)  
(7) (6) (5)  
(1) 10/100Base-TX autosensing Ethernet port status LED  
(2) Link LED for Combo port  
(4) Power LED (PWR)  
(6) D/S LED  
(3) Console port  
(5) A/L LED  
(7) Mode button  
(8) Active LED for Combo port  
Rear panel  
Figure 9 Rear panel of a Switch 4210 26-port PWR  
(1)  
(2)  
(3)  
(1) AC power socket  
(3) Grounding screw  
(2) DC power socket  
Power system  
Switch 4210 26-port PWR units support AC input or DC input.  
AC input  
Rated voltage range: 100 VAC to 240 VAC, 50 Hz/60 Hz  
Input voltage range: 90 VAC to 264 VAC, 47 Hz to 63 Hz  
DC input—Rated voltage range: -52 VDC to -56 VDC  
Switch 4210 PWR 26-Port units are able to power attached devices using standard  
802.3af Power over Ethernet. The total available power for PoE on this model is  
370W; enough to power 24-Ports at full 15.4W required of the PoE standard.  
n
3Com recommends a Redundant Power System (RPS) from Eaton Powerware for  
providing DC power to the Switch 4210 PWR 26-Port. For full details, refer to  
Cooling system  
Switch 4210 26-port PWR units each run four fans for heat dissipation.  
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Introduction to the Switch 4210 Family PWR Switches  
13  
The Switch 4210 PWR Power LED  
Front Panel LEDs  
Table 3 describes the power LED on the Switch 4210 PWR model.  
Table 3 The power LED on the Switch 4210 PWR models  
LED  
Mark on the panel  
Status  
ON  
Description  
Power LED  
PWR  
The switch is powered on.  
The switch is powered off.  
OFF  
10/100BASE-TX Autosensing Ethernet Port Status LED  
There are two port status LEDs on both sides (yellow LED on the left and green LED  
on the right) of the 10/100BASE-TX Ethernet port on the Switch 4210 PWR  
models. They indicate the ports active, link, duplex, and speed status.  
In addition, there is an A/L LED and a D/S LED on each Switch 4210 PWR model.  
These two LEDs indicate the port status LEDs mode. When the A/L LED is on, the  
port status LEDs respectively indicate the ports active status and link status. When  
the D/S LED is on, the port status LEDs respectively indicate the ports duplex status  
and speed status. Either the A/L LED or the D/S LED is on at one time. For details,  
Table 4 Port status LEDs on the Switch 4210 PWR models  
Port status  
mode LED  
Port status LED  
Description  
The A/L LED is Yellow LED  
BLINKING  
The port is in the active state and there is  
traffic on the port.  
on  
(left)  
OFF  
The port is in the active state but there is no  
traffic on the port.  
Green LED  
(right)  
ON  
The port is connected properly.  
OFF  
The port is not connected or is incorrectly  
connected.  
The D/S LED is Yellow LED  
ON  
OFF  
ON  
OFF  
The port operates in the full duplex mode.  
The port operates in the half duplex mode.  
The port rate is 100 Mbps.  
on  
(left)  
Green LED  
(right)  
The port rate is 10 Mbps.  
You can change the mode of the port status LEDs by pressing the Mode button.  
After a switch is powered on, the A/L LED is on initially. If you press the Mode  
button, the D/S LED will be on. After that, if you press the Mode button again  
within 45 seconds, the A/L LED will be on again. Otherwise, the A/L LED will  
automatically be on 45 seconds later.  
1000 Mbps Uplink Port Status LED  
Table 5 describes the 1000 Mbps upline port status LED on the Switch 4210.  
Table 5 The 1000 Mbps uplink port status LED on 4210 PWR models  
Mark on the  
LED  
panel  
Status  
ON  
Description  
1000 Mbps uplink port LINK  
link LED  
The port is connected properly.  
OFF  
The port is not connected or is  
incorrectly connected.  
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14  
CHAPTER 1: PRODUCT INTRODUCTION  
Table 5 The 1000 Mbps uplink port status LED on 4210 PWR models  
Mark on the  
panel  
LED  
Status  
Description  
1000 Mbps uplink port ACT  
active LED  
BLINKING  
The port is in the active state and  
there is traffic on the port.  
OFF  
The port is in the active state but  
there is no traffic on the port.  
Introduction to the  
Switch 4210 Family  
Non-PWR Models  
This section describes each Switch 4210 Family model.  
Switch 4210 9-port Front panel  
The Switch 4210 9-port model provides eight 10/100Base-TX autosensing  
Ethernet ports, one 10/100/1000Base-T autosensing Ethernet port, one  
100/1000Base-X SFP port, and one Console port. The SFP port and the  
10/100/1000BASE-T autosensing Ethernet port form a Combo port. For the  
Combo port, either the SFP port or the 10/100/1000BASE-T Ethernet port can be  
used at a time.  
Figure 10 shows the front panel of the Switch 4210 9-port model.  
Figure 10 The Switch 4210 9-port models front panel  
(1)  
(2)  
(3) (4)  
(8) (7)  
(7)  
(6)  
(5)  
(1) 10/100Base-TX autosensing port Speed LED (green)  
(2) 10/100Base-TX autosensing port  
(4) 10/100/1000Base-T autosensing port  
(6) 100/1000Base-X SFP port  
(3) Combo port Speed LED (green)  
(5) Console port  
(7) Link/Act LED (green)  
(8) Power LED (PWR)  
.
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Introduction to the Switch 4210 Family Non-PWR Models  
15  
Rear panel  
Figure 11 The Switch 4210 9-port models rear panel  
AC input terminal block  
Power system  
The Switch 4210 9-port model supports AC input.  
Rated Voltage Range: 100 VAC to 240 VAC, 50 Hz/60 Hz  
Input voltage range: 90 VAC to 264 VAC, 47 Hz to 63 Hz  
Cooling system  
The Switch 4210 cools off naturally.  
Switch 4210 18-port Front panel  
The Switch 4210 18-port models provide 16 10/100Base-TX autosensing Ethernet  
ports, two 10/100/1000Base-T autosensing Ethernet ports, two 100/1000Base-X  
SFP ports, and one Console port. Each SFP port and the corresponding  
10/100/1000BASE-T autosensing Ethernet port form a Combo port. For each  
Combo port, you can use either the SFP port or the corresponding  
10/100/1000BASE-T Ethernet port at one time.  
Figure 12 shows the Switch 4210 18-port models front panel.  
Figure 12 The Switch 4210 18-port models front panel  
(1)  
(2)  
(3)  
(4)  
(7)  
(8)  
(6) (5)  
(7)  
(1) 10/100Base-TX autosensing port Speed LED (green)  
(2) 10/100Base-TX autosensing port  
(4) 10/100/1000Base-T autosensing port  
(6) 100/1000Base-X SFP port  
(8) Power LED (PWR)  
(3) Combo port Speed LED (green)  
(5) Console port  
(7) Link/Act LED (green)  
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16  
CHAPTER 1: PRODUCT INTRODUCTION  
Rear panel  
Figure 13 The Switch 4210 18-port models rear panel  
AC input terminal block  
Power system  
The Switch 4210 18-port models support AC input.  
Rated Voltage Range: 100 VAC to 240 VAC, 50 Hz/60 Hz  
Input voltage range: 90 VAC to 264 VAC, 47 Hz to 63 Hz  
Cooling system  
3Com Switch 4210 non-PWR models cool naturallly through airflow.  
Switch 4210 26-port Front panel  
The Switch 4210 26-port front panel provides 24 10/100Base-TX autosensing  
Ethernet ports, two 10/100/1000Base-T autosensing Ethernet ports, two  
100/1000Base-X SFP ports, and one Console port. Each SFP port and the  
corresponding 10/100/1000BASE-T autosensing Ethernet port form a Combo  
port. For each Combo port, you can use either the SFP port or the corresponding  
10/100/1000BASE-T Ethernet port at one time.  
Figure 14 shows the front panel of the Switch 4210 26-port model.  
Figure 14 The Switch 4210 26-port front panel  
(1)  
(2)  
(4)  
(3)  
(6) (5)  
(8) (7)  
(7)  
(1) 10/100Base-TX autosensing port Speed LED (green)  
(2) 10/100Base-TX autosensing port  
(4) 10/100/1000Base-T autosensing port  
(6) 100/1000Base-X SFP port  
(3) Combo port Speed LED (green)  
(5) Console port  
(7) Link/Act LED (green)  
(8) Power LED (PWR)  
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Introduction to the Switch 4210 Family Non-PWR Models  
17  
Rear panel  
Figure 15 The Switch 4210 26-port rear panel  
(2)  
(2) AC input terminal block  
Power system  
The Switch 4210 26-port model supports AC input.  
Rated Voltage Range: 100 VAC to 240 VAC, 50 Hz/60 Hz  
Input voltage range: 90 VAC to 264 VAC, 47 Hz to 63 Hz  
Cooling system  
3Com Switch 4210 non-PWR models cool naturally through airflow.  
Switch 4210 52-port Front Panel  
The Switch 4210 52-port front panel provides 48 10/100Base-TX autosensing  
Ethernet ports, two 10/100/1000Base-T autosensing Ethernet ports, two  
100/1000Base-X SFP ports (The 4 gigabit ports are all active), and one Console  
port. Each SFP port and the corresponding 10/100/1000BASE-T autosensing  
Ethernet port form a Combo port. For each Combo port, you can use either the  
SFP port or the corresponding 10/100/1000BASE-T Ethernet port at one time. The  
Switch 4210 52-port unit is displayed in Figure 16.  
Figure 16 Switch 4210 52-port unit  
Power system  
The Switch 4210 52-port model supports AC input.  
Rated Voltage Range: 100 VAC to 240 VAC, 50 Hz/60 Hz  
Input voltage range: 90 VAC to 264 VAC, 47 Hz to 63 Hz  
Cooling system  
3Com Switch 4210 non-PWR models cool naturally through airflow.  
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18  
CHAPTER 1: PRODUCT INTRODUCTION  
Switch 4210 Family Power LED  
Front Panel LEDs  
Table 6 describes the power LED on the Switch 4210.  
Table 6 The power LED on the Switch 4210  
LED  
Mark on the panel  
Status  
ON  
Description  
Power LED  
Power  
The switch is powered on.  
The switch is powered off.  
OFF  
Port LED  
Table 7 describes the 10/100Base-TX autosensing ports Link/Act LED.  
Table 7 The Link/Act LED on the 3Com Switch 4210  
LED  
Status  
ON  
Description  
Link/Act LED (green)  
The port is connected properly.  
BLINKING  
The port is in the active state and there is  
traffic on the port.  
OFF  
The port is not connected or is incorrectly  
connected.  
Table 8 describes the Speed LED on the 10/100Base-TX port.  
Table 8 The 10/100Base-TX port Speed LED on the Switch 4210  
LED  
Status  
ON  
Description  
10/100Base-TX autosensing  
port Speed LED (green)  
The port is operating at 100 Mbps.  
The port is operating at 10 Mbps.  
OFF  
For a description of the Link/Act LED of the Combo port, see Table 7. When the  
port is connected correctly, the Speed LED indicates the operating speeds of the  
Combo port, as shown in Table 9.  
Table 9 The Combo port Speed LED on the Switch 4210  
LED  
Operating port  
Status  
Description  
Combo port  
Speed LED  
(green)  
100/1000Base-X  
SFP port  
Connected  
to a 1000  
Mbps optical  
module  
ON  
The port is operating at  
1000 Mbps.  
Connected  
to a 100  
OFF  
The port is operating at  
100 Mbps.  
Mbps optical  
module  
10/100/1000Base-T autosensing ON  
port  
The port is operating at  
1000 Mbps.  
OFF  
The port is operating at  
10/100 Mbps.  
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Technical Specifications  
19  
Technical  
Specifications  
Table 10 Technical specifications for the Switch 4210  
Model  
Switch 4210 52-port Switch 4210 26-port Switch 4210 18-port Switch 4210 9-port  
Physical dimensions (H 43.6 x 440 x 225 mm 43.6 × 440 × 160 mm 43.6 × 360 × 160 mm 43.6 × 230 × 160 mm  
× W × D)  
(1.7 × 17.3 × 6.3 in.) (1.7 × 14.2 × 6.3 in.) (1.7 × 9.1 × 6.3 in.)  
(1.7 x 17.3 x 8.8 in.)  
12.1 lbs (5.5 Kgs)  
Weight  
4.7 lbs (2.14 Kgs)  
3.4 lbs (1.53 kg.)  
2.3 lbs (1.06 kg.)  
Number of fixed ports 48 x 10/100Base-TX  
24 × 10/100Base-TX  
16 × 10/100Base-TX  
8 × 10/100Base-TX  
autosensing Ethernet autosensing Ethernet autosensing Ethernet autosensing Ethernet  
port  
ports  
ports  
ports  
4 x 100/1000 Mps  
Combo ports  
2 × 100/1000 Mbps  
Combo ports  
2 × 100/1000 Mbps  
Combo ports  
1 × 100/1000 Mbps  
Combo port  
Number of  
management ports  
1 × Console port  
Power system  
AC input:  
Rated voltage range: 100 VAC to 240 VAC, 50 Hz/60 Hz  
Input voltage range: 90 VAC to 264 VAC, 47 Hz to 63 Hz  
PoE (to power attachd Not supported  
deices)  
Not supported  
Not supported  
Not supported  
10W  
System power  
consumption (full  
load)  
25W  
14W  
12W  
Fan  
None  
None  
None  
None  
Operating  
temperature  
0°C to 45°C (30°F to 113°F)  
Relative humidity  
(non-condensing)  
10% to 90%  
Table 11 Technical specifications for the Switch 4210 PWR models  
Switch 4210  
26-port PWR  
Switch 4210  
18-port PWR  
Switch 4210  
9-port PWR  
Model  
Physical dimensions (H × W H 1.7 in 45 mm  
× D)  
H 1.7 in 45 mm  
H 1.7 in 45 mm  
W 17.3 in 440 mm W 11.8 in 300 mm W 11.8 in 300 mm  
D 16.9 in 430 mm  
13.4 lbs  
D 9.2 in 233 mm  
6.0 lbs  
D 10.8 in 275 mm  
4.9 lbs  
Weight  
6.09 Kgs  
2.70 Kgs  
2.22 Kgs  
Number of fixed ports  
24 × 10/100BASE-TX 16 ×  
autosensing Ethernet 10/100BASE-TX  
8 × 10/100BASE-TX  
autosensing  
ports  
autosensing  
Ethernet ports  
Ethernet ports  
2 × 100/1000 Mbps  
Combo ports  
1 × 100/1000 Mbps  
2 × 100/1000 Mbps Combo port  
Combo ports  
Number of management  
ports  
1 × Console port  
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20  
CHAPTER 1: PRODUCT INTRODUCTION  
Table 11 Technical specifications for the Switch 4210 PWR models  
Switch 4210  
26-port PWR  
Switch 4210  
18-port PWR  
Switch 4210  
9-port PWR  
Model  
Power system  
Switch 4210s 26-port PWR support AC input and DC input.  
Switch 4210 18-port PWR/Switch 4210s 9-port PWR support only  
AC input.  
AC input:  
Rated voltage range: 100 VAC to 240 VAC, 50 Hz/60 Hz  
Input voltage range: 90 VAC to 264 VAC, 47 Hz to 63 Hz  
DC input:  
Rated voltage range: -52 VDC to -56 VDC  
All ports  
serve as PoE power  
ports consumption  
System  
AC input: 25W +  
370W PoE  
25W + 123W PoE  
20W + 62W PoE  
DC input: 400 W  
(full load)  
PoE power  
maximum  
15.4 W × 24  
15.4 W × 8  
15.4 W × 4  
Number of fans  
4
2
2
Operating temperature  
0°C to 45°C (30°F to 113°F)  
Relative humidity  
(non-condensing)  
10% to 90%  
The Switch 4210 26-port, 18-port, and 9-port PWR models provide an  
over-temperature protection mechanism. When the internal temperature exceeds  
65°C (149°F), they will stop providing power from all ports. When the temperature  
is below 60°C (140°F), they will continue to provide power from all ports.  
n
Related Standards The 3Com Switch 4210 Family is designed to the following standards:  
8802-3, IEEE 802.3 (Ethernet), IEEE 802.3u (Fast Ethernet), IEEE  
802.3ab (Gigabit Ethernet), IEEE 802.1D (Bridging)  
Function  
UL 60950-1, EN 60950-1, CSA 22.2 No. 60950-1, IEC 60950-1  
Safety  
EN55022 Class A, CISPR 22 Class A, FCC Part 15 Subpart B Class  
A, ICES-003 Class A, VCCI Class A, EN61000-3-2, EN61000-3-3  
EMC Emissions  
EN55024  
EMC Immunity  
Earthing Lead  
Safety Requirements  
The Earthing Lead 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  
12  
Insulation Thickness  
Insulation Color  
0.4mm  
Green/Yellow  
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SFP Modules Supported for the Switch 4210  
21  
SFP Modules  
Supported for the  
Switch 4210  
The Switch 4210s front panel provides one or two 1000 Mbps SFP ports in which  
you can plug small form-factor (SFP) modules, which are described in Table 12.  
Table 12 SFP modules supported by the Switch 4210  
Type  
Model  
100 Mbps SFP module  
3CSFP81  
3CSFP82  
3CSFP91  
3CSFP92  
3CSFP97  
3CSFP9-81  
3CSFP9-82  
3CSFP85  
3CSFP86  
1000 Mbps SFP module  
100 Mbps bidirectional (BIDI) module  
1000 Mbps BIDI module  
The types of SFP modules may vary over time. Consult 3Com’s marketing  
personnel or technical support personnel to obtain the latest information about  
SFP modules.  
n
For the SFP module specifications, refer to 3Com Transceiver Data Sheet.  
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22  
CHAPTER 1: PRODUCT INTRODUCTION  
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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 4210  
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 D, “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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24  
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  
Switch 4210 26-Port and 52-Port models are rack-mountable in a standard  
19-inch rack. Switch 4210 9- and 18-Port models are not as wide as the 19-inch  
model and are intended for desktop or shelf installation.  
Follow the steps below to mount a 26- or 52-Port model unit 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  
25  
Figure 17 Installing the switch in a 19-inch rack  
Mounting the front Mount the front bracket as shown in Figure 18 and Figure 19.  
bracket  
Figure 18 Mount the front bracket to the device  
Screw  
Front  
bracket  
Figure 19 Mount the front bracket to the mount angel of the rack  
Screw  
Front  
bracket  
Front mount angle  
Mounting the rear The Switch 4210 26-Port does not need rear brackets. The description for  
bracket mounting rear brackets is only for the Switch 4210 PWR 24-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  
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26  
CHAPTER 2: INSTALLING THE SWITCH  
Figure 20 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 21 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  
27  
Figure 22 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 4210 powered-up and  
ready for operation.  
Powering-up the Switch Use the following sequence of steps to power-up the Switch.  
4210  
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 13 shows possible colors for the LED.  
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28  
CHAPTER 2: INSTALLING THE SWITCH  
Table 13 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 4210 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  
29  
WARNING: When powering any Switch 4210 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 4210 DC supply input are provided in  
You can power the Switch 4210 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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30  
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 14 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 14 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 4210. The distribution consists of several circuit breakers and  
connection terminals for the positive (common) and negative -48V outputs.  
Individually connect each Switch 4210 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 15 shows the recommended  
System circuit breaker and cable rating for the Switch 4210. The recommended cable  
length should not exceed three metres (9.84 feet).  
Table 15 Switch 4210 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  
31  
Figure 23 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 23.  
Figure 23 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  
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 4210 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 4210 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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32  
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 4210 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 the  
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 24.  
Figure 24 Console cable  
Table 16 Console cable pinouts  
RJ-45  
Signal  
RTS  
Direction  
DB9 (console)  
1
2
3
DTR  
TXD  
—>  
2
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Connecting the Console Cable  
33  
Table 16 Console cable pinouts  
RJ-45  
Signal  
CD  
Direction  
DB9 (console)  
4
5
6
7
8
GND  
RXD  
DSR  
5
3
<—  
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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34  
CHAPTER 2: INSTALLING THE SWITCH  
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MANAGING YOUR SWITCH  
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 its efficiency  
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:  
For information on the lost password procedure, refer to the Configuration Guide  
that is supplied with your switch.  
n
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36  
CHAPTER 3: MANAGING YOUR SWITCH  
Methods of Managing  
a Switch  
To manage your switch you can use one of the following methods:  
Command line interface management  
Command line interface management using SSH  
Web interface management  
SNMP management  
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 25), or remotely over the network (see Figure 26).  
Figure 25 CLI Management using the Console Port  
Workstation  
(with terminal emulation  
software installed)  
Switch  
Console Port  
Connection  
Console Cable  
Figure 26 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  
<4210>.  
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 [4210].  
Command Line Interface The Switch 4210 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 is 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 it using a  
Management Web browser remotely over an IP network (see Figure 27).  
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Setting Up Your Switch  
37  
Figure 27 Web Interface Management over the Network  
Switch  
Workstation  
Connect over Network  
via web browser  
SNMP Management You can manage a switch using any network management workstation running  
the Simple Network Management Protocol (SNMP) as shown in Figure 28. For a  
description of 3Com network management applications refer to “3Com Network  
Figure 28 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 set up your switch so  
that you can manage it in its default state. The setup process is summarized in  
Figure 29. Detailed steps are provided 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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38  
CHAPTER 3: MANAGING YOUR SWITCH  
Figure 29 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 36  
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 In order for the device to be remotely managed, it requires an IP address. You can  
use one of the following methods to allocate IP information to your switch.  
Configuring IP Manually  
When you configure the IP information, the switch remembers the information  
that you enter until you change it again. You should use the Manual IP  
configuration method if:  
you do not have a DHCP or BootP server on your network  
you want to remove the risk of the IP address ever 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.)  
For most installations, 3Com recommends that you assign a known IP address to  
your switch. This makes management simpler and more reliable as it is not  
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Setting Up Your Switch  
39  
dependent on a DHCP or BootP server, and eliminates the risk of the IP address  
changing.  
To manually enter IP information for your switch, refer to “Manually Configuring  
Automatically Configuring the IP Address using DHCP  
By default the switch attempts to obtain an IP address from a DHCP server on the  
network without requesting user intervention. When using automatic IP  
configuration, it is important that the switchs IP address is static so that you know  
what it is, otherwise it will be difficult to manage that switch. Most DHCP servers  
allow you to configure static IP addresses. Refer to the documentation that  
accompanies your DHCP server.  
For a detailed description of how automatic IP configuration operates, refer to the  
Configuration Guide on the 3Com Web Site.  
You should use the automatic IP configuration method if:  
Your network uses DHCP to allocate IP information  
Flexibility is needed. If the switch is deployed on a different subnet, it  
automatically reconfigures itself with an appropriate IP address so that you to  
not have 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 management.  
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40  
CHAPTER 3: MANAGING YOUR SWITCH  
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. You can discover the IP information by:  
Automatically  
Configured IP  
Information  
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).  
Using Network Director or 3Com Network Supervisor. These applications  
auto-discover the switch and display the automatically allocated IP information  
assigned to the switch.  
Reviewing information in your DHCP Server. The DHCP server in your network  
may log IP address assignments. By reviewing this log, you may be able to  
determine the device's IP address. Refer to your DHCP Server documentation  
for details.  
Connecting to the You can view the automatically configured IP information using the command line  
Console Port 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 port see “Connecting the  
Viewing IP Information using the Console Port  
You are now ready to view the automatically allocated IP information using the  
command line interface. To do so:  
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 CLI 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, <4210>is  
displayed as shown in Figure 30.  
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Viewing Automatically Configured IP Information  
41  
Figure 30 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 and you can now set up a  
management method. See “Methods of Managing a Switch” on page 36 for  
details.  
If you do not intend to use the CLI from the console port to manage the switch,  
you can logout, disconnect the serial cable, and close the terminal emulator  
software.  
Using 3Com Network 3Com has two management applications that will discover and help you manage  
Director or 3Com your network. 3Com Network Supervisor is freely distributed PC software ideal for  
Network Supervisor monitoring your network. It discovers your devices and connections, alerts you to  
network or configuration issues, assists you in registering your devices, and  
proactively monitors the health of your network.  
3Com Network Director is chargeable PC software that adds advanced  
configuration and control to the features available from 3Com Network  
Supervisor.  
You can use 3Com Network Supervisor or 3Com Network Director to discover the  
automatically allocated IP information. To do so:  
1 Connect your switch to the network.  
2 Launch 3Com Network Director or Network Supervisor and run the auto-discovery  
wizard.  
The application discovers the new switch and displays the IP information that has  
been automatically allocated to the switch.  
3 Power-up the switch and wait two minutes.  
Most DHCP and BootP servers allow you to configure static IP addresses so that  
you know the switch’s IP address. Refer to the documentation that accompanies  
your DHCP or BootP server for more information on this topic.  
If your network does not have a DHCP or BootP server, the workstation running  
3Com Network Supervisor or 3Com Network Director must be on the same subnet  
as the switch because auto-IP addresses are not routable.  
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42  
CHAPTER 3: MANAGING YOUR SWITCH  
Manually Configuring  
IP Information  
You can manually configure the switch 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). This is the only way to assign an IP address to a device that does  
not have an IP address already, or that has an unknown IP address. You can also  
use this method to change switchs IP information.  
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. This is only applicable if the  
device already has an IP address and you know that address.  
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 online (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 using  
the console port directly.  
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 “Pin-outs” on page 57.  
IP information, including:  
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 31 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 console port of the switch.  
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.  
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Manually Configuring IP Information  
43  
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:  
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) runs automatically. The Switch  
4210 takes approximately one minute to boot.  
Setting Up the Switch with IP Information  
To manually set up the switch with IP information using the command line  
interface perform the following steps  
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 Return a few times until it  
starts.  
2 At the login prompts, enter adminas your user name and press Return and at the  
password prompt press Return again. If you have logged on correctly, <4210>  
appears as shown below.  
Once you have logged in you are automatically in User View.  
***********************************************************  
*
*
*
*
*
*
Switch 4210 9-Port BOOTROM, Version 4.01  
***********************************************************  
Copyright(c) 2004-2007 3Com Corporation and its licensors.  
Creation date : May 29 2007, 19:14:41  
CPU Clock Speed : 200MHz  
BUS Clock Speed : 33MHz  
Memory Size  
Mac Address  
: 64MB  
: 001ac16d080a  
Press Ctrl-B to enter Boot Menu... 0  
Auto-booting...  
Decompress Image....................................................  
....................................................................  
....................................................................  
....................................................................  
.........................OK!  
Starting at 0x80100000...  
User interface aux0 is available.  
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44  
CHAPTER 3: MANAGING YOUR SWITCH  
Press ENTER to get started.  
Login authentication  
Username:admin  
Password:  
<4210>  
%Apr 1 23:57:15:490 2000 4210 SHELL/5/LOGIN:- 1 - admin(aux0) in  
unit1 login  
<4210>  
3 Enter the system-viewcommand and press Enter. The [4210]prompt is  
displayed.  
4 Enter 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  
and press Enter.  
(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 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)  
7 From the User View, type saveto save the switchs configuration (this information  
is not saved automatically when the switch is powered down).  
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 You can manage your switch, including changing IP address information, by  
Panel Port making a connection to a front panel port. You can then access the Command  
Line Interface or the Web interface, as desired. To do this you will need an IP  
for more information.  
The procedure described in this section assumes the unit has been 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.  
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Manually Configuring IP Information  
45  
A suitable Web browser. Refer to “Choosing a Browser”on page 48.  
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 32 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 front  
panel ports on the switch.  
Do not interconnect the switch to any other unconfigured switch.  
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, press Enter, and at the  
password prompt (default user name and password) 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  
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46  
CHAPTER 3: MANAGING YOUR SWITCH  
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 36.  
Using Command Line Interface using Telnet  
1 To start a Telnet session to the unit, click Startin Microsoft Windows.  
a Click Run.  
b In the 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, <4210>is displayed as shown  
below.  
****************************************************************************  
* Copyright(c) 2004-2007 3Com Corp. and its licensors. All rights reserved.*  
* Without the owner's prior written consent,  
* no decompiling or reverse-engineering shall be allowed.  
*
*
****************************************************************************  
Login authentication  
Username:admin  
Password:  
<4210>  
%Apr 4 06:13:31:519 2000 4210 SHELL/5/LOGIN:- 1 - admin(10.10.11.222) in  
unit1 login  
<4210>  
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).  
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Setting Up Command Line Interface Management  
47  
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 36.  
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 one AUX user interface.  
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 was 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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48  
CHAPTER 3: MANAGING YOUR SWITCH  
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  
<4210>, as shown in on page 44.  
Setting Up Command  
Line Interface  
Management using  
SSH  
To set up command line interface management using SSH, refer to the chapter  
entitled “SSH Configuration” in the “3Com Switch 4210 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 17 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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Setting Up SNMP Management  
49  
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 was 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  
Management  
Any network management application running the Simple Network Management  
Protocol (SNMP) can manage a switch if the management workstation is  
connected to the switch using a port on the management VLAN. By default, the  
management VLAN is 1, and all ports on the switch are in VLAN 1.  
For a description of 3Com’s network management applications, see Appendix C,  
Prerequisites  
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  
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.  
These switches support SNMP V1, V2, and V3. SNMP V3 is on as default. All  
commands are in snmp menu in System View.  
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50  
CHAPTER 3: MANAGING YOUR SWITCH  
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 18 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:  
[4210]local-user admin <cr>  
[4210-luser-admin]password simple xxxxxxxx  
(where xxxxxxxxis your chosen password).  
Save the configuration in the User View.  
For information on the lost password procedure refer to the Configuration Guide  
that is supplied with your switch.  
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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 4210 Command Reference Guide availabe on  
For Technical Support information, see “Obtaining Support for Your 3Com  
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52  
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  
53  
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 “Technical Specifications” on page 73.  
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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54  
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 was discovered correctly by your network management  
application.  
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  
55  
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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56  
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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58  
CHAPTER 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−  
Table 11 Pin assignments  
Pin Number  
10/100  
1000  
Ports configured as MDIX  
1
2
3
4
5
6
7
8
Receive Data +  
Receive Data −  
Transmit Data +  
Not assigned  
Not assigned  
Transmit Data −  
Not assigned  
Not assigned  
Bidirectional Data B+  
Bidirectional Data B−  
Bidirectional Data A+  
Bidirectional Data A−  
Bidirectional Data D+  
Bidirectional Data D−  
Bidirectional Data C+  
Bidirectional Data C−  
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OBTAINING SUPPORT FOR  
YOUR 3COM PRODUCTS  
B
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 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:  
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60  
CHAPTER B: OBTAINING SUPPORT FOR YOUR 3COM PRODUCTS  
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 benefits,  
Support and Repair you must first register your product at:  
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Contact Us  
61  
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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62  
CHAPTER B: OBTAINING SUPPORT FOR YOUR 3COM PRODUCTS  
Country  
Telephone Number  
Country  
Telephone Number  
Austria  
Belgium  
Denmark  
Finland  
France  
Germany  
Hungary  
Ireland  
Israel  
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  
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:  
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  
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3COM NETWORK MANAGEMENT  
C
3Com has a range of network management applications to address networks of  
all sizes and complexity, from small and medium businesses through large  
enterprises. The applications include:  
Details of these and other 3Com Network Management Solutions can be found at  
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  
misconfigurations. 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,  
3Com Network  
Director  
3Com Network Director (3ND) is a standalone application that allows you to carry  
out key management and administrative tasks on midsized 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.  
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64  
APPENDIX C: 3COM NETWORK MANAGEMENT  
To find out more about how 3Com Network Director can help you manage your  
3Com network and to download a trial version, go to: www.3com.com/3nd  
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  
65  
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 configuration and change control  
functionalities, including the capability 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  
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66  
APPENDIX C: 3COM NETWORK MANAGEMENT  
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REDUNDANT POWER SUPPLY  
SAFETY INFORMATION  
D
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.  
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.  
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68  
APPENDIX D: REDUNDANT POWER SUPPLY SAFETY INFORMATION  
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.  
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.  
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Información de Seguridad Importante  
69  
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.  
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 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  
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70  
APPENDIX D: REDUNDANT POWER SUPPLY SAFETY INFORMATION  
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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Importanti Informazioni di Sicurezza  
71  
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 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.  
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72  
APPENDIX D: REDUNDANT POWER SUPPLY SAFETY INFORMATION  
OSTRZEŻENIE: Instalacja zasilacza nadmiarowego (RPS) powinna być wykony-  
wana przez odpowiednio przeszkolony i wykwalifikowany personel.  
OSTRZEŻENIE: Te instrukcje należy przeczytać razem z instrukcjami doty-  
czącymi bezpieczeństwa i instalacji dostarczonymi z systemem zasilania nadmi-  
arowego.  
OSTRZEŻENIE: Jeśli dowolny przełącznik Switch 4210 jest zasilany z zasilacza  
RPS, urządzenie musi być uziemione. Można to uzyskać przez podłączenie prze-  
wodu zasilającego do urządzenia lub przez podłączenie końcówki uziemienia z  
tyłu urządzenia do dobrego elementu uziemiającego. Należy upewnić się, że  
urządzenie zostało uziemione przed podłączeniem zasilacza prądu stałego do  
zasilacza RPS.  
OSTRZEŻENIE: Wszystkie zasilacze RPS muszą mieć certyfikat nieuziemionego  
źródła zasilania SELV zgodny z normami IEC 60950-1/UL 60950-1/EN 60950-1.  
OSTRZEŻENIE: Te instrukcje należy przeczytać razem z charakterystyką zasi-  
lającego prądu stałego przełącznika Switch 4210 opisaną w Dodatku C, Specy-  
fikacja techniczna.  
OSTRZEŻENIE: Podczas podłączania kabla do zasilacza RPS należy przestrze-  
gać 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 jest  
podłączona do dodatniej (wspólnej) końcówki zasilacza RPS, a ujemna końcówka  
przełącznika jest podłączona do ujemnej końcówki (wyłącznika) zasilacza RPS.  
OSTRZEŻENIE: Nie używać standardowego „dodatnio uziemionego” -48-wol-  
towego nadmiarowego systemu zasilania odpowiedniego przy użyciu ze sprzętem  
telekomunikacyjnym wraz z przełącznikami sieciowymi 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  
73  
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 the Switch  
VCCI Statement  
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74  
APPENDIX D: REDUNDANT POWER SUPPLY SAFETY INFORMATION  
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