8ABOUT THIS GUIDE

Most user guides and release notes are available in Adobe Acrobat

Reader Portable Document Format (PDF) or HTML on the 3Com

World Wide Web site:

http://www.3com.com/

Conventions

Table 1 and Table 2 list 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

 

Information that alerts you to potential loss of data or

 

 

 

 

potential damage to an application, system, or device

 

 

Warning

 

Information that alerts you to potential personal injury

 

 

 

 

 

 

Table 2

Text Conventions

 

 

 

 

 

 

 

Convention

Description

 

 

 

 

Screen displays

This typeface represents information as it appears on the

 

 

 

 

screen.

 

 

 

 

 

 

 

Syntax

 

The word “syntax” means that you must evaluate the syntax

 

 

 

 

provided and then supply the appropriate values for the

 

 

 

placeholders that appear in angle brackets. Example:

 

 

 

To change your password, use the following syntax:

 

 

 

system password <password>

 

 

 

In this example, you must supply a password for <password>.

 

 

 

 

Commands

The word “command” means that you must enter the

 

 

 

 

command exactly as shown and then press Return or Enter.

 

 

 

Commands appear in bold. Example:

 

 

 

To display port information, enter the following command:

 

 

 

bridge port detail

 

 

 

 

The words “enter”

When you see the word “enter” in this guide, you must type

 

 

and “type”

something, and then press Return or Enter. Do not press

 

 

 

Return or Enter when an instruction simply says “type.”

 

 

 

 

Keyboard key names

If you must press two or more keys simultaneously, the key

 

 

 

 

names are linked with a plus sign (+). Example:

Press Ctrl+Alt+Del

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Image 8
3Com 4226T, 4228G, 4250T manual Conventions, Icon Description, Convention Description

4250T, 4226T, 4228G specifications

The 3Com 4228G, 4226T, and 4250T are professional-grade network switches designed for businesses seeking to enhance their network infrastructure. These models offer robust performance and reliability, catering to various networking needs, from small offices to large enterprise environments.

The 3Com 4228G switch is a 28-port gigabit Ethernet switch designed for high-bandwidth applications. It provides 24 Gigabit Ethernet ports with 802.3af Power over Ethernet (PoE) capability, allowing devices such as IP phones and wireless access points to be powered directly through the Ethernet cables. This feature simplifies installation and reduces additional cabling costs. The switch also supports VLAN tagging for network segmentation, improving security and performance. Its advanced traffic management lets IT administrators prioritize network traffic effectively, ensuring critical applications receive the necessary bandwidth.

On the other hand, the 3Com 4226T is a 26-port gigabit Ethernet switch, primarily designed for environments requiring a high level of connectivity without PoE. It offers similar features to the 4228G, such as VLAN support and enhanced traffic management capabilities. The 4226T is ideal for businesses that do not require power over Ethernet yet need reliable, high-speed networking capabilities. With 26 ports, this switch is an excellent choice for medium-sized enterprises looking to upgrade their network infrastructure without overwhelming their existing resources.

The 3Com 4250T is a more advanced switch, offering 48 Gigabit Ethernet ports and a robust feature set suitable for more complex networking environments. It includes Layer 2 and Layer 3 functionality, allowing for advanced routing and switching capabilities, making it highly adaptable to various network designs. The 4250T also simplifies network management through its extensive configuration options and support for IPv6. Moreover, it features an efficient cooling system and reduced power consumption, aligning with today’s growing demand for energy-efficient solutions.

All three models utilize advanced technologies such as Spanning Tree Protocol (STP) for loop prevention, QoS mechanisms to prioritize traffic, and comprehensive security features to protect the network from unauthorized access. With their different port configurations and capabilities, the 3Com 4228G, 4226T, and 4250T switches provide exceptional performance and flexibility, making them ideal for businesses aiming to enhance their networking capabilities.