16CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4200 SERIES

LED

Color

Indicates

 

 

 

 

Green flashing

Packets are being transmitted/received on the port.

 

Yellow

A 10 or 100 Mbps link is present and the port is enabled.

 

Yellow flashing

Packets are being transmitted/received on the port.

 

Green / Yellow

A 10, 100 or 1000 Mbps link present but disabled.

 

alternating

 

 

Off

No link is present.

Unit LEDs

 

1–4

Green

When the Switch forms a stack with other Switch 4200

 

 

Family units the LED indicates the position of the unit in the

 

 

stack and that a link is present. Unit LED number 1 can also

 

 

indicate a stand-alone Switch.

 

Off

The Switch initialization process is not complete.

Power/Self Test LED

 

 

Green

The Switch is powered-up and operating normally.

 

Green flashing

The Switch is either downloading software or is initializing

 

 

(which includes running a Power On Self Test).

 

Yellow

The Switch has failed its Power On Self Test.

 

 

Refer to Chapter 4 Solving Problems Indicated by LEDs.

 

Off

The Switch is not receiving power or there is a fault with the

 

 

Power Supply Unit.

Alert LED

 

 

Green flashing

The Switch Alert LED has been configured via the CLI or Web

 

 

Interface to flash.

 

Off

The Switch Alert LED has been configured via the CLI or Web

 

 

Interface to be off (Default state).

 

 

 

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3Com 4250T, 4228G, 4226T manual Color Indicates, Unit LEDs, Power/Self Test LED, Alert LED

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.