3Com 3C16790, 3C16791 manual How the Switch Can Be Used, Switching

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How the Switch Can Be Used

Switching

When a network of repeater hubs is in operation, any information that is sent by the workstations is passed around the whole network (regardless of the destination of the information). This can result in a lot of unnecessary traffic that can slow the network down. The Switch solves this problem because it ‘listens’ to the network and automatically learns what workstations can be reached through its ports. It can then selectively pass on any information by transmitting the traffic from the relevant port only (instead of all ports like a repeater hub). This operation is called ‘switching’.

The Switch effectively divides up your network, localizing the network traffic and passing on traffic as necessary (as shown in Figure 2). If you have workstations that communicate frequently in the same part of the network, traffic between them is not passed on unnecessarily to the remainder of the network, thereby reducing the load. If you have any high performance workstations that require a lot of bandwidth, connect them directly to the Switch.

The Switches have an additional new feature to aid network performance at times of excessive load. It is called Priority Queuing. When a packet is received, the Switch will examine it to see if it has been priority encoded. If it has the Switch will then read the priority level and determine

whether it should be directed through the normal or high priority channel. This feature can be useful for example during excessive loads when one type of traffic may require priority over another. The Switch is configured to to comply with VLAN priority tagged frames and IP TOS / DSCP priority encoded frames.

Figure 2 The Switch Separates Your Network and Controls the Information Effectively

10BASE-T

OfficeConnect hub

OfficeConnect Switch

100BASE-TX

OfficeConnect

hub

100BASE-TX

High performance

workstation

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Contents OfficeConnect Dual Speed Switch 5, Switch 3Com Corporation 5400 Bayfront Plaza Santa Clara, California 3Com Corporation Limited Warranty Regulatory Notices Page Introduction Creating Your Network Dual Speed Switch 5-FrontIf the Alert LED is off, the unit is operating correctly Dual Speed Switch 8 -FrontPower Adapter socket Dual Speed Switch 8 -RearSwitching How the Switch Can Be UsedConnecting 10BASE-T and 100BASE-TX Networks Before You StartUnit Connections Twisted Pair TP Cables Workstation ConnectionsStacking the Units Together Rubber FeetStacking Clip Securing Your Switch Positioning Your SwitchConnecting OfficeConnect Units to Your Switch Connecting Workstations and Other Equipment to Your SwitchSpot Checks Checking Unit ConnectionsProblem Solving Page Networking Terminology Page Dimensions and Operating Conditions Standards Dimensions and StandardsEnd Of Life Statement Environmental StatementsRegulated Materials Statement Environmental Statement about the DocumentationImportant Safety Information Wichtige Sicherheitshinweise Consignes Importantes DE Sécurité 3Com Knowledgebase Web Services Online Technical ServicesTechnical Support World Wide Web SiteSupport from 3Com Support from Your Network SupplierEurope, Middle East Africa Country Telephone Number Fax Number Returning Products for Repair3Com Corporation Limited Warranty Warranties Exclusive Regulatory Notices Part No. DUA1679-0AAA01 Published February

3C16791, 3C16790 specifications

The 3Com 3C16790 and 3C16791 are advanced network interface cards designed for high-performance connectivity in various computing environments. Both models cater to users seeking reliable and efficient networking solutions, particularly within enterprise, educational, and small to medium business settings.

One of the standout features of the 3C16790 is its ability to support both Ethernet and Fast Ethernet standards. This ensures compatibility with a wide range of network infrastructure, allowing users to easily integrate these cards into existing systems without the need for extensive upgrades or replacements. The 3C16791, on the other hand, takes this capability a step further by supporting higher data transmission speeds, making it ideal for environments where bandwidth-intensive applications are commonplace.

Both models are built on the robust PCI interface, which provides a reliable connection to the motherboard and enhances overall data throughput. This is particularly important for users who require stable and efficient network performance for tasks such as video streaming, online gaming, and large file transfers. The integration of 32-bit data bus architecture further optimizes data transfer rates, ensuring minimal latency and maximum responsiveness.

Another notable characteristic is the advanced driver support available for both the 3C16790 and 3C16791. They come with a suite of drivers compatible with various operating systems, facilitating seamless installation and configuration. This allows users to quickly set up the network interface cards without extensive technical knowledge, reducing downtime during deployment.

In terms of technology, both models utilize advanced auto-negotiation capabilities. This feature enables the cards to automatically detect and adjust to the optimal speed and duplex settings of connected devices, ensuring efficient communication and minimizing network issues. Additionally, support for Wake-on-LAN technology allows users to remotely power on their computers, making it easier to manage resources and perform updates without physical access to the machine.

Overall, the 3Com 3C16790 and 3C16791 embody a combination of performance, dependability, and user-friendly features that make them compelling choices for anyone looking to enhance their network infrastructure. With robust data throughput, extensive compatibility, and technology that minimizes configuration headaches, these network interface cards serve as reliable building blocks for efficient computing environments.
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