PROBLEM SOLVING

The Switch has been designed to aid you when detecting and solving possible problems with your network. These problems are rarely serious; the cause is usually a disconnected or damaged cable, or incorrect configuration. If this section does not solve your problem, contact your supplier for information on what to do next.

Perform these actions first:

■Ensure all network equipment is powered on.

■Power each piece of network equipment off, wait about 5 seconds and then power each one on.

Check the following symptoms and solutions:

Power LED not lit. Check your power adapter connection. If there is still no power, you may have a faulty power adapter which needs replacing with another OfficeConnect power adapter. Do not use any other power adapter with the Switch.

Port Status LED not lit for a port that has a TP cable connected. After connection it may take several seconds for the port status LED's to illuminate. The port status LED should turn Green or Yellow for each port that is connected. The Duplex LED may or may not illuminate.

Please refer to pages 5 and 6 'Creating your Network' for a full description of the LED's.

lf the Port Status LED has not lit after several seconds ensure the connected device is powered, the TP cable is not damaged and that it is correctly inserted at both ends.

You may find a TP cable works when connected to the Switch but doesn't if it is disconnected from the Switch and connected to a different piece of equipment. This may be due to the advanced automatic MDI / MDIX feature of the Switch that the other equipment may not have.

Alert LED continuously lit. If the Alert LED is lit, there is a problem with the network. Remove the port connections one at a time, waiting a few seconds between each port. If the Alert LED goes off, there is either a network loop or an excessive amount of broadcast traffic on that port connection:

Network loop — Examine your connections and remove the loop. Each piece of equipment needs only one connection to your Switch.

Excessive amounts of broadcast frames — Some pieces of network equipment operate by sending out broadcast

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3Com 3C16791, 3C16790 manual Problem Solving
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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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