The Power-up Sequence 23

Using the Expansion Module slot at the rear of the Switch, you can stack

Switch units together in two ways:

The SuperStack 3 Switch Cascade Stacking Kit (3C17227) consists of two Cascade Modules and a Cascade Cable. This kit allows you to connect two Switch 4400 units together.

The SuperStack 3 Cascade Extender Kit (3C17228) consists of one Cascade Module, one Cascade Cable and one Cascade Extender Unit. This kit allows you to connect any of the combinations of Switch 4400 units shown in “Stacking Units” on page 22. Each Cascade Extender Kit enables you to add one additional Switch to your stack.

 

For more information contact your supplier, and refer to the user

 

documentation that accompanies these Cascade Kits.

 

When the Switch 4400s are stacked together they are assigned a unit

 

number from bottom-to-top for management purposes. When further

 

switches are added to the stack, they can be positioned at the bottom of

 

the stack or at the top. Either way, the Switch management software will

 

re-order the Switch unit numbers into a logical order again (from bottom

 

to top).

 

 

The Power-up

The following sections describe how to get your Switch 4400

Sequence

powered-up and ready for operation.

Powering-up the

Use the following sequence of steps to power-up the Switch.

Switch 4400

 

1Plug the power cord into the power socket at the rear of the Switch.

2Plug the other end of the power cord into your power outlet.

The Switch powers-up and runs through its Power On Self Test (POST), which takes approximately 10 seconds.

Checking for Correct During the Power On Self Test, all ports on the Switch are disabled and Operation of LEDs the LEDs light in a set sequence.

When the POST has completed, check the Power/Self Test LED to make sure that your Switch is operating correctly. Table 7 shows possible colors for the LED.

Page 23
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3Com 3C17204, 3C172203 manual Power-up, Sequence, Powering-up, Switch

3C17204, 3C172203 specifications

The 3Com 3C172203 and 3C17204 are part of the 3Com series of networking products that have made significant contributions to local area networks (LANs) and enterprise connectivity. While they may not be as widely recognized today as newer technologies, their features, technologies, and characteristics played an essential role in enhancing network performance and reliability during their peak usage.

One of the defining features of the 3Com 3C172203 and 3C17204 is their support for Ethernet networking, which was pivotal in establishing fast and reliable communication between devices on a network. These products typically supported both 10Base-T and 100Base-TX standards, providing a flexible transition from older networks to faster Ethernet speeds. This backward compatibility ensured that organizations could upgrade their networks incrementally without needing a complete overhaul, thereby preserving their existing investments in infrastructure.

Both models also supported features designed to optimize network performance and provide enhanced management capabilities. For instance, built-in diagnostic features enabled network administrators to troubleshoot connection issues more effectively, thereby reducing downtime. Additionally, these devices incorporated intelligent switching capabilities that could manage data flow efficiently, prioritizing traffic and optimizing available bandwidth to ensure a smooth user experience, even under heavy load.

In terms of physical design, the 3C172203 and 3C17204 were built with a focus on durability. These units often featured robust metal enclosures suitable for various environments, from office spaces to more demanding industrial settings. Furthermore, their compact design allowed for easy integration into existing network setups without requiring significant rack space, making them an attractive option for enterprises looking to maximize their networking capabilities.

Security features were also a consideration in the design of these networking devices. They implemented basic security protocols to safeguard the integrity of data transmitted across the network, ensuring that unauthorized access was minimized and overall network security was enhanced.

In conclusion, the 3Com 3C172203 and 3C17204 represent an era of networking technology characterized by their support for Ethernet standards, intelligent switching capabilities, robust design, and essential management features. These products were integral in facilitating the growth of LANs and laid the groundwork for the advanced networking solutions that followed in the years ahead. While newer technologies have emerged since then, the fundamental principles established by devices like the 3C172203 and 3C17204 continue to influence contemporary networking designs.