3Com 3CRBSG2093, 3CRBSG28HPWR93, 3CSFP91, 3CSFP92 Data sheet

DATA SHEET

DATA SHEET

3COM®BASELINE PLUS
SWITCH 2900 GIGABIT
FAMILY

Enterprise-class, Gigabit switches for
small and medium businesses, voice ready
with PoE and advanced features for network
control and flexibility

SWITCHING

SWITCHING

from top to bottom: 3Com Baseline Plus, Switch 2920,
Switch 2928 HPWR

OVERVIEW

The "smart" voice-ready 3Com®Baseline Plus Switch
2900 Gigabit Family delivers Layer 2 enterprise-class
Gigabit switching solutions along with layer 3 static
routes, customized and priced for small and mid-sized
organizations.

These managed switches offer tremendous value to
small and medium businesses looking for a low cost
solution who need a level of control over their network
not offered by unmanaged switching products, without
sacrificing the advanced functionality normally found
on higher-end managed switching products.

KEY BENEFITS

LAYER 2 SWITCHING WITH ADVANCED FEATURES

The Baseline Plus Switch 2900 Gigabit Family helps
build a voice ready network—with 3Com’s unique
auto-voice VLAN, advanced voice QoS, SNMP-based
management, Power over Ethernet (PoE) and other
features.

To ensure optimal use of the network bandwidth and
deliver maximum voice and data quality, traffic flow
can be directed according to the needs of the business
using Spanning Tree and Rapid Spanning Tree, traffic
prioritization, priority queuing and VLANs.

Link aggregation can be done via IEEE 802.3ad LACP
or manually, allowing ports to be grouped together to
form an ultra-high-bandwidth connection that greatly
expands bandwidth capacity to the network core or
other parts of the network.

Each switch also has four dedicated SFP ports for
fiber uplinks over longer distances.

ENTERPRISE-QUALITY SECURITY

Enterprise-quality security is provided with IEEE

802.1X network login and advanced Access Control
Lists (ACLs), which enable usage policies via the
switch at each point of access to the network. Time
based policies can also be configured on these
switches. All management communications are
encrypted with HTTPS.

POWER OVER ETHERNET

The Baseline Plus Switch 2928 HPWR provides inline
power to attached devices—access points, Voice over
IP (VoIP) phones, IP security cameras, etc.—via
industry-standard IEEE 802.3af PoE over a single
Ethernet cable, resulting in significant deployment
cost savings. This switch also supports pre-std PoE
plus functionality that will enable the switch to deliver
30W of power on each port.

NO SWITCH SETUP REQUIRED

Baseline Plus Gigabit switches are operational straight
out-of-the-box; as long as default settings are
acceptable, there is no need to configure the switch. If
desired, the switch can be configured using a web
browser, console port, or SNMP management software.

ENHANCED INTUITIVE MANAGEMENT OPTIONS

For networks that require more control, the switch
web management interface provides an intuitive,
menu-driven process for even novice users to quickly

New Baseline Plus Switch 2900 models are available
with 20 and a 28 port PoE model (with 365W power
budget) deliver data and power over the same cabling.

®

2

3COM

BASELINE PLUS SWITCH 2900 GIGABIT FAMILY

KEY BENEFITS (continued)

and confidently configure the switch during initial

etup and manage it during normal operation.

s
Graphical switch and port views provide a clear
understanding of switch status and configuration.

In addition, the web interface features individual port­traffic monitoring (port mirroring) and diagnostic tools
like ping and traceroute. A cable diagnostic tool lets
users troubleshoot basic connectivity problems via the
web management interface further simplifying

management platform. It delivers full FCAPS solution
as defined by ISO, among other features. IMC

anagement software can be used to map the

m
network topology, indicating what devices are
connected, and on what ports. Switch management
and software upgrades can be easily done. Other
SNMP-based management tools may also be used.

The Switch family also supports a compact Command
Line Interface (CLI) that is accessed via the front panel
console port. Using the CLI, major switch management
options can be quickly configured.

network installation.

IMC management platform. IMC is our next
generation fully integrated comprehensive

FEATURE HIGHLIGHTS

FEATURE DESCRIPTION

Performance

VLANs Segment the network by grouping users based on their data or traffic exchange

Advanced QoS and traffic limiting Traffic prioritization, using IEEE 802.1p Quality of Service (QoS) and Type of Service (TOS)

Link aggregation (trunking) Group together up to 8 ports automatically using Link Aggregation Control Protocol

Rapid Spanning Tree Protocol Improves network compatibility, scalability and availability.
(STP/RSTP/MSTP) support

IGMP snooping Multicast filtering optimizes network performance, instead of flooding traffic to all ports.
Unique voice features Automatic assignment of voice traffic to separate VLANs (“auto-voice VLAN”), advanced

Fiber uplink Achieve greater distance connectivity using gigabit fiber uplinks.
Flexible Gigabit uplinks Daisychain multiple units together via the built-in copper Gigabit uplink ports or connect

PoE support (PWR model only) Provides power for IP phones, wireless LAN access points, and other IEEE 802.3af-

Security

IEEE 802.1X network access control Provides standards-based security combined with local authentication.
Advanced Access Control Lists (ACLs) MAC- and IP-based ACLs enable network traffic filtering and enhance network control.

Traffic monitoring (port mirroring) Administrators can examine suspect data streams received on any port by mirroring the

Configuration and management

Enhanced browser-based interface Graphical user interface allows even the most novice users to configure the switch during

SNMP support Switch can be managed with 3Com IMC, Network Supervisor, Network Director and other

PoE configuration PoE power can be enabled or disabled per unit and per port; power can also be limited

Cable diagnostics Remotely detect copper cable issues using a browser-based tool.

requirements. This ensures optimal use of available bandwidth as traffic flow is directed
according to the needs of the business.

with Differentiated Services Code Point (DSCP), and ingress/egress rate limiting help
ensure that critical time-sensitive traffic like voice gets the priority needed for quality
communications.

(LACP), or manually, to form an ultra-high-bandwidth connection to the network
backbone; help prevent traffic bottlenecks.

voice QoS, traffic limiting, multicast filtering and PoE support delivers the support
necessary for quality voice communications.

to a network backbone via SFP-based fiber modules.

compliant devices over the same cable used for data; lowers total cost of ownership since
there is no need to run additional electrical wiring. Note: pre-std PoE Plus is also
supported allowing the switch to deliver up to 30W of power.

Time based ACLs allow for greater flexibiliy with managing network access.

data stream to a monitoring port.

initial setup and monitor it during normal operation.

SNMP-compatible tools.

per port.

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3

3COM

BASELINE PLUS SWITCH 2900 GIGABIT FAMILY

BASELINE PLUS SWITCH 2900 USER INTERFACE

INTUITIVE BROWSER-BASED INTERFACE

With the switch web management interface, even novice users can quickly and confidently configure the switch
during initial setup and manage it during normal operation. Graphical switch and port views provide a clear
understanding of switch status and configuration.

Device summary information for the Switch 2928 HPWR.

PoE summary information for the Switch 2928 HPWR.

BASELINE PLUS SWITCH 2928 HPWR IN A CONVERGED NETWORK

VOICE READY NETWORK

3Com Voice Ready Networks provide an innovative and
holistic approach to assessing, recommending and
implementing a converged network, solving the most
vexing challenges that confront IT managers as they
deploy Internet Protocol (IP) telephony systems. With
3Com Voice Ready Networks, organizations can optimize
network infrastructure for realtime voice and video
traffic, ensure secure communications and protect
business assets.

The Baseline Plus Switch 2900 Gigabit Family is an
integral component of this approach, offering:

› Automatic assignment of voice traffic to separate

VLANs
› IEEE 802.1p prioritization and 802.1Q VLANS
› Advanced QoS and rate limiting capabilities
› IEEE 802.1X authentication
› Power over Ethernet (PWR model only)

4 3COM®BASELINE PLUS SWITCH 2900 GIGABIT FAMILY

SPECIFICATIONS

nformation in this section is relevant to all

I
members of the 3Com Baseline Plus

witch 2900 Gigabit Family, unless

S
otherwise stated.

ONNECTORS

C

witch 2920

S

16 10BASE-T/100BASE-X/1000BASE-T

Gigabit SFP ports

4

Switch 2928 HPWR

4 10BASE-T/100BASE-T/1000BASE-T

2

Gigabit SFP ports

4
PoE: 365W

ll switches

A

All copper ports are auto MDI/MDIX,

uto-negotiating RJ-45

a
Front-mounted console port

PERFORMANCE

Switch 2920

0 Gbps switching capacity, max.

4

9.8 Mpps forwarding rate, max.

2

witch 2928 HPWR

S

56 Gbps switching capacity, max.

41.7 Mpps forwarding rate, max.

All models

Wirespeed performance
Store-and-forward switching

LAYER 2 SWITCHING

8,192 MAC addresses in address table

56 port-based VLANs (IEEE 802.1Q)

2
IEEE 802.3ad Link Aggregation,

automated (LACP) and manual

ggregation: number of ports/2 trunks,

a
8 ports per trunk, max.

Auto-negotiation of port speed and duplex
Auto-voice VLAN for automatic vendor-

independent segregation and prioritization
of VoIP traffic

IEEE 802.3x flow control
(half- and full-duplex)

IEEE 802.1D Spanning Tree Protocol (STP)
IEEE 802.1w Rapid Spanning Tree Protocol

(RSTP)
Internet Group Management Protocol

(IGMP) v1, v2 and v3 is supported
Jumbo frames (up to 10K bytes)
Multicast filtering
Convergence
4 hardware queues per port, with IEEE

802.1p Class of Service/Quality of Service
(CoS/QoS) on egress

Weighted Round Robin queuing
Traffic prioritization at Layer 2 using

802.1p QoS, and at Layer 3 using Type of
Service (TOS) with Differentiated Services
Code Point (DSCP)

Ingress/egress rate limiting

Auto VLAN assignment for voice traffic
determined by vendor OUI

CoS remarking for prioritization
of VoIP traffic

AYER 3 SWITCHING

L

tatic routes: 32

S

irtual VLAN interface: 8

V

HCP relay

D

RP entry: 256

A

SECURITY

EEE 802.1X Network login

I

ccess Control Lists (ACLs)

A

AC-based Layer 2 filtering rules:

M

source/destination address

•
Ethertype

•

CoS

•
VLAN

•

IP-based Layer 3 filtering rules:

• protocol

• source/destination address
TCP/UDP port

•
DSCP value

•
IP precedence

•
anagement communications are

M
encrypted via HTTPS

OWER OVER ETHERNET

P

Switch 2928 HPWR

EEE 802.3af

I
365W

Note: This switch supports pre-std

EE 802.3at std.

I

his enables the switch to deliver 30W

T
per port

MANAGEMENT

Web-based configuration and
management

System configuration with SNMP
v1, v2c and v3

• Support Remote Monitoring (RMON)

alarm, event and history recording

• Support system log

• Support hierarchical alarms

• Support NTP

Support power, fan, and temperature
alarms
Support for IMC our next generation

Network Management platform
CLI via console
Management communications are

encrypted via HTTPS

LED INDICATORS

Module active, power, network traffic
mode, link status/speed

AT-A-GLANCE TRAFFIC
MONITORING

Ports: active, enabled, disabled
Modules: present, active

OWER SUPPLY

P

Switch 2920

urrent rating: 0.8A

C
Voltage: 100V-240V AC, 50/60Hz
Power consumption max: 22.4W
Power dissipation: 76.43 BTU/hr max

witch 2928 HPWR

S

C source

A

urrent rating: 8A

C

oltage:100V - 240V AC, 50/60Hz

V
Power consumption max for Ethernet

witching: 67W

S

oE Budget: 365W

P

ower consumption for PoE: up to 365W +

P
25% overhead

Power dissipation: 539.11 BTU/hr max

DC source – RPS1000-A3
Current rating: 20A
Voltage: -52V to -55V DC

oE Budget: up to 740W

P

ower consumption with full PoE: 832W

P

All switches

Power inlet: IEC 320

DIMENSIONS

witch 2920

S

Height: 4.36cm (1.72in)

idth: 44cm (17.32in)

W
Depth: 16cm (6.3in)
Weight: 3kg (6.61lb)

Switch 2928 HPWR

Height: 4.36cm (1.72in)
Width: 44cm (17.32in)
Depth: 42cm (16.54in)

eight: 7kg (15.43lb)

W

ENVIRONMENTAL
REQUIREMENTS

Operating temperature: 0° to 45°C
(32° to 113°F)

Operating humidity: 10 to 90%
(non-condensing)

Standard: EN 60068 (IEC 68)

REGULATORY AND AGENCY
APPROVALS

Safety: UL 60950-1, EN 60950-1,
CSA 22.2 60950-1, IEC 60950-1

Emissions: EN 55022 Class A,
EN 61000-3-2, EN 61000-3-3,
FCC Part 15 Subpart B Class A, CISPR22
Class A, ICES-003 Class A, VCCI Class A

Immunity: EN 55024

EEE STANDARDS SUPPORTED

I

EEE 802.1d Spanning Tree

I

EEE 802.1p Priority Tags

I

EEE 802.1Q VLANs

I
IEEE 802.1X Port Security

EEE 802.1w Rapid Spanning Tree

I

EEE 802.3 Ethernet

I

EEE 802.3ab Gigabit Ethernet

I

EEE 802.3ad Link Aggregation

I

EEE 802.3af Power over Ethernet

I
(Switch 2924-PWR only)

EEE 802.3u Fast Ethernet

I

EEE 802.3x Flow Control

I

EEE 802.3z Gigabit Ethernet

I

SO 8802-3

I

PACKAGE CONTENTS

Switch unit, power cord, self-adhesive
rubber pads, console cable, rack-mount

it, product CD, warranty and safety

k

nformation flyer

i

ARRANTY AND OTHER

W

ERVICES

S

hree Year Limited Hardware Warranty

T

imited Software Warranty for 90 days

L
Advance Hardware Replacement with

Next Business Day shipment in most

egions

r

0 days of telephone technical support

9
Refer to www.3com.com/warranty

for details.

ORDERING INFORMATION

PRODUCT DESCRIPTION 3COM SKU

3Com Baseline Plus Switch 2920 3CRBSG2093
3Com Baseline Plus Switch 2928 HPWR 3CRBSG28HPWR93

Visit www.3com.com for more information about 3Com network solutions.

3Com Corporation, Corporate Headquarters, 350 Campus Drive, Marlborough, MA 01752-3064
3Com is publicly traded on NASDAQ under the symbol COMS.

Copyright © 2009 3Com and the 3Com logo are registered trademarks in various countries worldwide of 3Com Corporation. All other company and product names
may be trademarks of their respective companies. While every effort is made to ensure the information given is accurate, 3Com does not accept liability for any errors or
mistakes which may arise. All specifications are subject to change without notice. 401207-001 07/09

PRODUCT DESCRIPTION 3COM SKU

TRANSCEIVERS

3Com 1000BASE-SX SFP 3CSFP91
3Com 1000BASE-LX SFP 3CSFP92