3Com 2800 Series User manual

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3Com Baseline Switch 2800 Family
(3CBLUG16A, 3CBLUG24A)
User Guide

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Table of Contents
1 Product Overview ....................................................................................1
Introduction............................................................................................1
Summary of Hardware Features ........................................................... 1
Physical Features.................................................................................. 4
Front Panel ....................................................................................4
Rear Panel..................................................................................... 4
Description of LEDs ..............................................................................5
Technical Specifications........................................................................ 6
Network Design..................................................................................... 7
2 Installing The Switch...............................................................................9
Package Contents ...............................................................................10
Positioning the Switch .........................................................................10
Rack Mounting ....................................................................................11
Powering On........................................................................................13
3 Problem Solving ....................................................................................14
4 Obtaining Support For Your Product ..................................................16
Register Your Product to Gain Service Benefits .................................16
Purchase Value-Added Services ........................................................16
Troubleshoot Online............................................................................ 17
Contact Us...........................................................................................17
Telephone Technical Support and Repair ..........................................17
Appendix A - Safety Information.............................................................20
Safety Information ...............................................................................20
L’information de Sécurité Importante .................................................. 22
Wichtige Sicherheitsinformationen...................................................... 24
Información de Seguridad Importante.................................................25
Importanti Informazioni di Sicurezza ................................................... 27
Ważne Informacje o Zabezpieczeniach ..............................................29

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Informações de segurança importantes..............................................31
Appendix B - Regulatory Information.....................................................34
FCC Statement............................................................................34
Information to the User ................................................................34
CE Statement (Europe) ...............................................................35
ICES Statement...........................................................................35
VCCI Statement...........................................................................36
Appendix C - Collection List of the Hazardous Substances ................37

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1 Product Overview
Introduction
The 3Com Baseline Switch 2824 and the 3Com Baseline Switch 2816
are versatile, easy-to-use, unmanaged gigabit switches. It is ideal for
users who want the high-speed performance of 10/100/1000 switching
but do not need sophisticated management functions. The Switch is
shipped ready for use, Operational straight out of the box. No
configuration is necessary. Your 3Com Baseline Switch incorporates
the latest in Green technology to yield more than 20% power savings
over the previous generation technology.
Figure 1-1 Appearance
Summary of Hardware Features
Table 1-1 Summarizes the hardware features supported by the
Switch.

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Table 1-1 Hardware Features
Feature Description
Auto-negotiation Supported on all ports.
Forwarding Modes Store and Forward.
Mac Address Table 8K
Port throughput
 2816: 32Gbps
 2824: 48Gbps
Auto MDI/MDIX Supported on all ports.
Traffic Prioritization
The Switch offers priority queuing, which
means all packets that are received are
examined to see if they have been priority
encoded. When a packet is received, the
Switch will read the priority level and
determine the appropriate channel to
forward the packet based on the priority
level. This feature can be useful, for
example, during excessive loads when
one type of traffic may require priority over
another. The Switch is configured to
comply with 802.1 p, VLAN tagged frames.
Notes:
The traffic prioritization feature supported
by the Switch is compatible with the
relevant sections of the IEEE 802.1 D
standard (incorporating IEEE 802.1 p).

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Feature Description
Ethernet Ports
The Switch has 24/16 10/100/1000 Mbps
auto-negotiating ports. Each port
automatically negotiates with the attached
device to determine the correct speed and
duplex mode of operation. Once
negotiated, the port will operate in one of
the following modes:
 10BASE-T half duplex
 10BASE-T full duplex
 100BASE-TX half duplex
 100BASE-TX full duplex
 1000BASE-T full duplex
WARNING:
RJ-45 ports. These are shielded RJ-45
data sockets. They cannot be used as
standard traditional telephone sockets, or
to connect the unit to a traditional PBX or
public telephone network. Only connect
RJ-45 data connectors, network telephony
systems, or network telephones to these
sockets. Either shielded or unshielded
data cables with shielded or unshielded
jacks can be connected to these data
sockets.
Mounting 19-inch rack or standalone mounting.
Fanless design Silent operation whether used in a rack or
desktop situation.
Green Technology
When no connection exists or a short
network cable is used, power consumption
can be reduced automatically to save
energy.

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Physical Features
Front Panel
Figure 1-2 2816
Figure 1-3 2824
Rear Panel
Figure 1-4 Rear Panel

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Description of LEDs
Table 1-2 Description of LEDs
The Switch provides LED indicators on the front panel for your
convenience to monitor the switch. Table 1-3 describes the meanings
of the LEDs.
Table 1-3 Description on the LEDs of the Switch
LED Status Description
Power
Green The unit is powered on and ready for
use.
OFF
The unit is not receiving power:
 Check that the power cord is
connected correctly.
 If the unit still does not operate,
contact your supplier.
Link/Activity
Green
The port works at the rate of 1000
Mbps; the LED flashes quickly when
the port is sending or receiving data.
Yellow
The port works at the rate of 10 or 100
Mbps; the LED flashes quickly when
the port is sending or receiving data.
Off
The link has not been established,
either nothing is connected to the port,
or there is a problem:
 Check that the attached device is
powered on.
 Check that the cable is the correct
type and is not faulty. If these
checks do not identify the cause of
the problem, it may be that the unit
or the device connected to the port
is faulty. Contact your supplier for
further advice.

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Technical Specifications
Table 1-4 contains the technical specifications of the Switch.
Table 1-4 Technical specifications of the Switch.
Specification 2816 2824
Physical
Physical
dimensions
(H×W×D)
44 mm×440
mm×173 mm
44 mm×440
mm×173 mm
Weight <1.65 kg <1.75 kg
Ethernet port 16 24
Mounting
Free standing, or 19-inch rack
mounted using the mounting kit
supplied
Electrical
Power Inlet IEC 320
AC Input
Voltage
Rating
Rated voltage range: 100-240V
AC, 50/60 Hz
Current
Rating 1Amp max
Maximum
Power
Consumption
15W 20W
Environmental
Operating
temperature 0°C to 40°C (32°F to 104°F)
Storage
temperature –40°C to +70°C (-40°F to 158°F)
Operating
humidity 5% to 95% (noncondensing)
Storage
humidity 5% to 95% (noncondensing)

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Specification 2816 2824
Related
Standards
Functional
SO 8802-3, IEEE 802.3
(Ethernet), IEEE 802.3u (Fast
Ethernet), IEEE 802.3ab (Gigabit
Ethernet), IEEE 802.3x(Flow
control on full duplex links), IEEE
802.3d(Bridging), IEEE 802.1 p
(VLAN tagging/ priority queuing)
Safety UL 60950-1, IEC60950-1, CSA
22.2 #60950-1, EN 60950-1
EMC
Emissions
EN 55022 Class A, FCC Part 15
Subpart B Class A, ICES-003
Class A, VCCI Class A, AS/NZS
CISPR 22 Class A
EMC
Immunity EN 55024
Network Design
The Switch provides high performance switched connections to 10
Mbps, 100 Mbps, and 1000 Mbps hubs, switches, servers and
workstations that need a dedicated switched link.
The following figure illustrates one possible configuration. Each port
has a shielded RJ-45 connector on the front panel. Each port is
capable of operating at 10 Mbps, 100 Mbps or 1000 Mbps. The ports
can automatically determine the speed and the duplex mode of the
connected equipment and provides a suitable switched connection. At
10 Mbps and at 100 Mbps, the ports can operate in half or full duplex
mode. At 1000 Mbps, the ports operate in full duplex mode only.