Choosing the Correct Cables

25

Choosing the correct Fiber cables 26

GBIC Operation 27

 

Approved GBIC Transceivers

27

Inserting a GBIC Transceiver

27

3SETTING UP FOR MANAGEMENT

 

Setting Up Overview

32

 

 

 

 

 

IP Configuration

33

 

 

 

 

 

Preparing for Management

34

 

 

 

 

Manually Configuring IP Information

35

 

 

Connecting to a Front Panel Port

35

 

 

Connecting to the Console Port

38

 

 

 

Viewing Automatically Configured IP Information

42

 

Using 3Com Network Supervisor

42

 

 

 

Connecting to the Console Port

42

 

 

 

Methods of Managing a Switch

45

 

 

 

Command Line Interface Management

45

 

 

Web Interface Management

46

 

 

 

SNMP Management

46

 

 

 

 

 

Setting Up Command Line Interface Management

47

 

CLI Management via the Console Port

47

 

 

CLI Management over the Network

47

 

 

Setting Up Web Interface Management

48

 

 

Pre-requisites

48

 

 

 

 

 

 

Web Management Over the Network

49

 

 

Setting Up SNMP Management

49

 

 

 

Pre-requisites

50

 

 

 

 

 

 

Default Users and Passwords

50

 

 

 

 

Changing Default Passwords

50

 

 

 

 

 

 

 

 

 

4 PROBLEM SOLVING

 

 

 

 

 

 

Solving Problems Indicated by LEDs

54

 

 

 

Solving Hardware Problems 55

 

 

 

 

Solving Communication Problems

55

 

 

 

Solving Stack Formation Problems

56

 

 

 

Solving Software Upgrade Problems

57

 

 

Page 4
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3Com 4250T, 4228G, 4226T manual Setting UP for Management

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.