3Com

3Com 2928 Switch

Name: 3CRBSG2893 - 3Com 2928 Switch
Brand: 3Com
SKU: 3CRBSG2893

MPN: 3CRBSG2893·By: 3Com

Part #:3CRBSG2893NewIn stock

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Product overview

The 3Com Baseline Plus Switch 2928 (SKU: 3CRBSG2893) is a Layer 2 Gigabit Ethernet switch with static Layer 3 routes, designed for SMB environments. It features 24x 10/100/1000Base-T RJ-45 ports and 4x Gigabit SFP ports (dual-purpose with RJ45), plus a console port for CLI management. Powered by a 333MHz CPU, 128MB RAM, and 128MB flash, it delivers 56 Gbps switching capacity and 41.7 Mpps forwarding rate. Key capabilities include 8,192 MAC addresses, 256 VLANs, IEEE 802.3ad LACP (8 trunks/8 ports each), Spanning Tree protocols, 802.1X authentication, and QoS prioritization. Management options encompass web interface, SNMP v1/v2c/v3, RMON, and HTTPS. It operates on 100-240V AC with 31.5W max consumption in a 1U rackmount form factor (7kg). Ideal for voice-ready networks with auto-voice VLAN and IGMP snooping, ensuring non-blocking wirespeed performance for servers, workstations, and uplinks.

24x Gigabit RJ45 + 4x SFP ports, console CLI
56 Gbps capacity, 41.7 Mpps forwarding rate
8K MAC table, 256 VLANs, LACP aggregation
802.1X auth, QoS, IGMP snooping for security
Web/SNMP v3/RMON management interface
31.5W max power, 1U rackmount 7kg

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Featuring

Manufacturer part #	3CRBSG2893
Brand	3Com
Condition	New
Model	2928
Flash Size	128MB
Memory Size	128MB RAM
Product Line	Baseline Plus 2900 Family
Product Type	Layer 2 Gigabit Ethernet Switch with static Layer 3 routes
VLAN Support	256 port-based VLANs (IEEE 802.1Q); Auto-voice VLAN
Ethernet Speed	10/100/1000 Mbps autosensing; Gigabit SFP
CPU Clock Speed	333MHz
Link Aggregation	IEEE 802.3ad LACP automated/manual; max 8 trunks, 8 ports per trunk
MAC Address Table	8,192 addresses; also listed as 8,000 in some sources
Supported Protocols	IEEE 802.1p prioritization; 802.1X authentication; 802.1D Spanning Tree; 802.1w Rapid Spanning Tree; 802.3x flow control; 802.3ad LACP
Management Interface	Web-based configuration; SNMP v1/v2c/v3; RMON; HTTPS; Configuration Wizard
Compliance Certifications	IEEE 802.1D, 802.1Q, 802.1p, 802.1w, 802.1x, 802.3, 802.3ab, 802.3ad LACP, 802.3u, 802.3x, 802.3z; EN 60068 (IEC 68)

Storage

Flash Size	128MB
Memory Size	128MB RAM

Processor

CPU Clock Speed	333MHz

Network & Communication

Ethernet Speed	10/100/1000 Mbps autosensing; Gigabit SFP
Forwarding Rate	41.7 Mpps maximum
Switching Capacity	56 Gbps maximum

Power Consumption

Max Wattage	31.5W maximum; 107.48 BTU/hr dissipation
Voltage Input	100-240V AC, 50/60Hz
Current Rating	0.8A
Power Supplies	Internal fixed AC power supply

Physical Characteristics

Weight	7kg (15.43 lb)
Form Factor	1U rackmount/desktop
Status LEDs	System, link status/speed per port

Environmental

Operating Humidity	10% to 90% non-condensing
Operating Temperature	0°C to 45°C (32°F to 113°F)

Interface/Ports

Console Port	1x RJ45 front panel for CLI management
Network Ports	24x 10/100/1000Base-T RJ-45; 4x Gigabit SFP (dual-purpose with 4 RJ45); 1x Console

Compatible systems

No specific server/system or OS compatibility lists found in sources; web/SNMP management is OS-agnostic.

Best for

SMB Core Switching
Provides 56 Gbps capacity and 41.7 Mpps for 24 Gigabit ports plus 4 SFP uplinks, supporting VLANs and LACP for efficient traffic management in small business networks.
Voice-Ready Networks
Features auto-voice VLAN, 802.1p QoS, and IGMP snooping to prioritize VoIP traffic across 24 ports without bottlenecks.
Secure Access Layer
IEEE 802.1X authentication and ACLs secure connections on Gigabit ports, with console CLI for quick setup.
Data Center Uplink
4x dual-purpose SFP ports with LACP aggregation enable high-bandwidth links to core backbones at wirespeed.

Frequently asked questions

What ports does the 3Com Baseline Plus Switch 2928 have?

It includes 24x 10/100/1000Base-T RJ-45 autosensing ports, 4x Gigabit SFP (dual-purpose with RJ45), and 1x front-panel RJ45 console for CLI. All support wirespeed Gigabit Ethernet with flow control and autonegotiation, ideal for mixed device connectivity.

What is the switching performance?

Maximum 56 Gbps switching capacity and 41.7 Mpps forwarding rate, with 8,192 MAC addresses. Delivers non-blocking full-duplex performance across all ports using store-and-forward switching, handling high-throughput SMB traffic without bottlenecks.

Does it support VLANs and link aggregation?

Yes, supports 256 IEEE 802.1Q port-based VLANs including auto-voice VLAN, and IEEE 802.3ad LACP with max 8 trunks (8 ports each). These enable network segmentation, redundancy, and bandwidth optimization for VoIP and data convergence.

What management options are available?

Web-based GUI, SNMP v1/v2c/v3, RMON, HTTPS encryption, and CLI via console port. Includes configuration wizard for quick setup, plus status LEDs for system and port monitoring, simplifying administration for IT teams.

What are the power and environmental specs?

Internal 100-240V AC 50/60Hz supply, 0.8A, 31.5W max (107 BTU/hr). Operates 0-45°C, 10-90% humidity non-condensing, in 1U rackmount form (7kg), ensuring reliability in standard office/server room conditions.

Is it suitable for VoIP networks?

Yes, with auto-voice VLAN, 802.1p prioritization, 4 QoS queues per port, IGMP snooping, and LLDP support. These features isolate and prioritize voice traffic on 24 Gigabit ports, delivering low-latency performance for converged networks.

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Manufacturer part #

3CRBSG2893

Brand

3Com

Condition

New

Model

2928

Flash Size

128MB

Memory Size

128MB RAM

Product Line

Baseline Plus 2900 Family

Product Type

Layer 2 Gigabit Ethernet Switch with static Layer 3 routes

VLAN Support

256 port-based VLANs (IEEE 802.1Q); Auto-voice VLAN

Ethernet Speed

10/100/1000 Mbps autosensing; Gigabit SFP

CPU Clock Speed

333MHz

Link Aggregation

IEEE 802.3ad LACP automated/manual; max 8 trunks, 8 ports per trunk

MAC Address Table

8,192 addresses; also listed as 8,000 in some sources

Supported Protocols

IEEE 802.1p prioritization; 802.1X authentication; 802.1D Spanning Tree; 802.1w Rapid Spanning Tree; 802.3x flow control; 802.3ad LACP

Management Interface

Web-based configuration; SNMP v1/v2c/v3; RMON; HTTPS; Configuration Wizard

Compliance Certifications

IEEE 802.1D, 802.1Q, 802.1p, 802.1w, 802.1x, 802.3, 802.3ab, 802.3ad LACP, 802.3u, 802.3x, 802.3z; EN 60068 (IEC 68)

Flash Size

128MB

Memory Size

128MB RAM

Ethernet Speed

10/100/1000 Mbps autosensing; Gigabit SFP

Forwarding Rate

41.7 Mpps maximum

Switching Capacity

56 Gbps maximum

Max Wattage

31.5W maximum; 107.48 BTU/hr dissipation

Voltage Input

100-240V AC, 50/60Hz

Current Rating

0.8A

Power Supplies

Internal fixed AC power supply

Weight

7kg (15.43 lb)

Form Factor

1U rackmount/desktop

Status LEDs

System, link status/speed per port

Operating Humidity

10% to 90% non-condensing

Operating Temperature

0°C to 45°C (32°F to 113°F)

Console Port

1x RJ45 front panel for CLI management

Network Ports

24x 10/100/1000Base-T RJ-45; 4x Gigabit SFP (dual-purpose with 4 RJ45); 1x Console