3com 3CRBSG2893 Data Sheet
4
3COM
®
BASELINE PLUS SWITCH 2900 GIGABIT FAMILY
3Com Corporation, Corporate Headquarters, 350 Campus Drive, Marlborough, MA 01752-3064
3Com is publicly traded on NASDAQ under the symbol COMS.
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.
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.
401207-003 08/09
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SPECIFICATIONS
PRODUCT DESCRIPTION
3COM SKU
3Com Baseline Plus Switch 2920
3CRBSG2093
3Com Baseline Plus Switch 2928
3CRBSG2893
3Com Baseline Plus Switch 2928 PWR
3CRBSG28PWR93
3Com Baseline Plus Switch 2928 HPWR
3CRBSG28HPWR93
ORDERING INFORMATION
Information in this section is relevant to all
members of the 3Com Baseline Plus
Switch 2900 Gigabit Family, unless
otherwise stated.
members of the 3Com Baseline Plus
Switch 2900 Gigabit Family, unless
otherwise stated.
CONNECTORS
Switch 2920
16 10BASE-T/100BASE-X/1000BASE-T
4 Gigabit SFP ports
16 10BASE-T/100BASE-X/1000BASE-T
4 Gigabit SFP ports
Switch 2928
24 10BASE-T/100BASE-T/1000BASE-T
4 Gigabit SFP ports
24 10BASE-T/100BASE-T/1000BASE-T
4 Gigabit SFP ports
Switch 2928 PWR
24 10BASE-T/100BASE-T/1000BASE-T
4 Gigabit SFP ports
PoE: 170W
24 10BASE-T/100BASE-T/1000BASE-T
4 Gigabit SFP ports
PoE: 170W
Switch 2928 HPWR
24 10BASE-T/100BASE-T/1000BASE-T
4 Gigabit SFP ports
PoE: 365W
24 10BASE-T/100BASE-T/1000BASE-T
4 Gigabit SFP ports
PoE: 365W
All switches
All copper ports are auto MDI/MDIX,
auto-negotiating RJ-45
Front-mounted console port
All copper ports are auto MDI/MDIX,
auto-negotiating RJ-45
Front-mounted console port
PERFORMANCE
Switch 2920
40 Gbps switching capacity, max.
29.8 Mpps forwarding rate, max.
40 Gbps switching capacity, max.
29.8 Mpps forwarding rate, max.
Switch 2928
56 Gbps switching capacity, max.
41.7 Mpps forwarding rate, max.
56 Gbps switching capacity, max.
41.7 Mpps forwarding rate, max.
Switch 2928 PWR
56 Gbps switching capacity, max.
41.7 Mpps forwarding rate, max.
56 Gbps switching capacity, max.
41.7 Mpps forwarding rate, max.
Switch 2928 HPWR
56 Gbps switching capacity, max.
41.7 Mpps forwarding rate, max.
56 Gbps switching capacity, max.
41.7 Mpps forwarding rate, max.
All models
Wirespeed performance
Store-and-forward switching
Wirespeed performance
Store-and-forward switching
LAYER 2 SWITCHING
8,192 MAC addresses in address table
256 port-based VLANs (IEEE 802.1Q)
IEEE 802.3ad Link Aggregation,
automated (LACP) and manual
aggregation: number of ports/2 trunks,
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)
IEEE 802.1s Multiple Spanning Tree (MST)
Internet Group Management Protocol
(IGMP) v1, v2 and v3 is supported
Jumbo frames (up to 10K bytes)
Multicast filtering
Convergence
256 port-based VLANs (IEEE 802.1Q)
IEEE 802.3ad Link Aggregation,
automated (LACP) and manual
aggregation: number of ports/2 trunks,
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)
IEEE 802.1s Multiple Spanning Tree (MST)
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
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
determined by vendor OUI
CoS remarking for prioritization
of VoIP traffic
LAYER 3 SWITCHING
Static routes: 32
Virtual VLAN interface: 8
DHCP relay
ARP entry: 256
Virtual VLAN interface: 8
DHCP relay
ARP entry: 256
SECURITY
IEEE 802.1X Network login
Access Control Lists (ACLs)
MAC-based Layer 2 filtering rules:
• source/destination address
• Ethertype
Access Control Lists (ACLs)
MAC-based Layer 2 filtering rules:
• source/destination address
• Ethertype
• CoS
• VLAN
IP-based Layer 3 filtering rules:
• protocol
• source/destination address
• TCP/UDP port
• DSCP value
• IP precedence
Management communications are
encrypted via HTTPS
• VLAN
IP-based Layer 3 filtering rules:
• protocol
• source/destination address
• TCP/UDP port
• DSCP value
• IP precedence
Management communications are
encrypted via HTTPS
POWER OVER ETHERNET
Switch 2928 PWR
IEEE 802.3af
170W
IEEE 802.3af
170W
Switch 2928 HPWR
IEEE 802.3af
365W
Note: Both switches support pre-std
IEE 802.3at std.
This enables the switch to deliver 30W
per port
IEEE 802.3af
365W
Note: Both switches support pre-std
IEE 802.3at std.
This enables the switch to deliver 30W
per port
MANAGEMENT
Web-based configuration and
management
System configuration with SNMP
v1, v2c and v3
• Support Remote Monitoring (RMON)
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
• 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
Management communications are
encrypted via HTTPS
LED INDICATORS
Module active, power, network traffic
mode, link status/speed
mode, link status/speed
AT-A-GLANCE TRAFFIC
MONITORING
MONITORING
Ports: active, enabled, disabled
Modules: present, active
Modules: present, active
POWER SUPPLY
Switch 2920
Current rating: 0.8A
Voltage: 100V-240V AC, 50/60Hz
Power consumption max: 22.4W
Power dissipation: 76.43 BTU/hr max
Current rating: 0.8A
Voltage: 100V-240V AC, 50/60Hz
Power consumption max: 22.4W
Power dissipation: 76.43 BTU/hr max
Switch 2928
Current rating: 0.8A
Voltage: 110V-240V AC, 50/60Hz
Power consumption max: 31.5W
Power dissipation: 107.48 BTU/hr max
Current rating: 0.8A
Voltage: 110V-240V AC, 50/60Hz
Power consumption max: 31.5W
Power dissipation: 107.48 BTU/hr max
Switch 2928 PWR
Current rating: 2.9A
Voltage: 100V – 240V AC, 50/60Hz
Power consumption max for Ethernet
switching: 45W
PoE Budget: 170W
Power consumption for PoE: up to 170W
+ 25% overhead
Power dissipation: 290.08 BTU/hr max
Current rating: 2.9A
Voltage: 100V – 240V AC, 50/60Hz
Power consumption max for Ethernet
switching: 45W
PoE Budget: 170W
Power consumption for PoE: up to 170W
+ 25% overhead
Power dissipation: 290.08 BTU/hr max
Switch 2928 HPWR
AC source
Current rating: 8A
Voltage:100V – 240V AC, 50/60Hz
Power consumption max for Ethernet
Switching: 67W
PoE Budget: 365W
Power consumption for PoE: up to 365W +
25% overhead
Power dissipation: 539.11 BTU/hr max
AC source
Current rating: 8A
Voltage:100V – 240V AC, 50/60Hz
Power consumption max for Ethernet
Switching: 67W
PoE Budget: 365W
Power consumption for PoE: up to 365W +
25% overhead
Power dissipation: 539.11 BTU/hr max
DC source – RPS1000-A3
Current rating: 20A
Voltage: -52V to -55V DC
PoE Budget: up to 740W
Power consumption with full PoE: 832W
Current rating: 20A
Voltage: -52V to -55V DC
PoE Budget: up to 740W
Power consumption with full PoE: 832W
All switches
Power inlet: IEC 320
Power inlet: IEC 320
DIMENSIONS
Switch 2920
Height: 4.36cm (1.72in)
Width: 44cm (17.32in)
Depth: 16cm (6.3in)
Weight: 3kg (6.61lb)
Height: 4.36cm (1.72in)
Width: 44cm (17.32in)
Depth: 16cm (6.3in)
Weight: 3kg (6.61lb)
Switch 2928
Height: 4.36cm (1.72in)
Width: 44cm (17.32in)
Depth: 16cm (6.3in)
Weight: 3kg (6.61lb)
Height: 4.36cm (1.72in)
Width: 44cm (17.32in)
Depth: 16cm (6.3in)
Weight: 3kg (6.61lb)
Switch 2928 PWR
Height: 4.36cm (1.72in)
Width: 44cm (17.32in)
Depth: 42cm (16.54in)
Weight: 7kg (15.43lb)
Height: 4.36cm (1.72in)
Width: 44cm (17.32in)
Depth: 42cm (16.54in)
Weight: 7kg (15.43lb)
Switch 2928 HPWR
Height: 4.36cm (1.72in)
Width: 44cm (17.32in)
Depth: 42cm (16.54in)
Weight: 7kg (15.43lb)
Height: 4.36cm (1.72in)
Width: 44cm (17.32in)
Depth: 42cm (16.54in)
Weight: 7kg (15.43lb)
ENVIRONMENTAL
REQUIREMENTS
REQUIREMENTS
Operating temperature: 0° to 45°C
(32° to 113°F)
Operating humidity: 10 to 90%
(non-condensing)
Standard: EN 60068 (IEC 68)
(32° to 113°F)
Operating humidity: 10 to 90%
(non-condensing)
Standard: EN 60068 (IEC 68)
REGULATORY AND AGENCY
APPROVALS
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
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
IEEE STANDARDS SUPPORTED
IEEE 802.1d Spanning Tree
IEEE 802.1p Priority Tags
IEEE 802.1Q VLANs
IEEE 802.1X Port Security
IEEE 802.1w Rapid Spanning Tree
IEEE 802.3 Ethernet
IEEE 802.3ab Gigabit Ethernet
IEEE 802.3ad Link Aggregation
IEEE 802.3af Power over Ethernet
(Switch 2928 HPWR model only)
IEEE 802.3u Fast Ethernet
IEEE 802.3x Flow Control
IEEE 802.3z Gigabit Ethernet
ISO 8802-3
IEEE 802.1p Priority Tags
IEEE 802.1Q VLANs
IEEE 802.1X Port Security
IEEE 802.1w Rapid Spanning Tree
IEEE 802.3 Ethernet
IEEE 802.3ab Gigabit Ethernet
IEEE 802.3ad Link Aggregation
IEEE 802.3af Power over Ethernet
(Switch 2928 HPWR model only)
IEEE 802.3u Fast Ethernet
IEEE 802.3x Flow Control
IEEE 802.3z Gigabit Ethernet
ISO 8802-3
PACKAGE CONTENTS
Switch unit, power cord, self-adhesive
rubber pads, console cable, rack-mount
kit, product CD, warranty and safety
information flyer
rubber pads, console cable, rack-mount
kit, product CD, warranty and safety
information flyer
WARRANTY AND OTHER
SERVICES
SERVICES
Three Year Limited Hardware Warranty
Limited Software Warranty for 90 days
Advance Hardware Replacement with
Next Business Day shipment in most
regions
90 days of telephone technical support
Refer to www.3com.com/warranty
for details.
Limited Software Warranty for 90 days
Advance Hardware Replacement with
Next Business Day shipment in most
regions
90 days of telephone technical support
Refer to www.3com.com/warranty
for details.
PRODUCT DESCRIPTION
3COM SKU
TRANSCEIVERS
3Com 1000BASE-SX SFP
3CSFP91
3Com 1000BASE-LX SFP
3CSFP92