Magnum 4K16 Switches Installation and User Guide

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2.2.5Up-link Switch at port#1 for Cascading

The port#1 is equipped with a Media Dependent Interface (MDI-X) movable switch to simplify cascaded or up-link connections. It enables the first port’s RJ-45 cable to either connect to a user station (=) or to be cascaded to another hub (X) with cross-over switch. (See Section 4.4 for more details about Up-link). Like all 4K16 ports, Port # 1 is a dual-speed switch port which will sense the speed of the connected device. When the Up-link port is used to cascade two Magnum 4K16 together, the auto- sensing feature will cause the connecting link to operate at 100Mb speed.

2.2.6Frame Buffering and Latency

The Magnum 4K16 Series are store-and-forward switches. Each frame (or packet) is loaded into the Switch’s memory and inspected before forwarding can occur. This technique ensures that all forwarded frames are of a valid length and have the correct CRC, i.e., are good packets. This eliminates the propagation of bad packets, enabling all of the available bandwidth to be used for valid information.

While other switching technologies such as "cut-through" or "express" impose minimal frame latency, they will also permit bad frames to propagate out to the Ethernet segments connected. The "cut-through" technique permits collision fragment frames, which are a result of late collisions, to be forwarded to add to the network traffic. Since there is no way to filter frames with a bad CRC (the entire frame must be present in order for CRC to be calculated), the result of indiscriminate cut-through forwarding is greater traffic congestion, especially at peak activity. Since collisions and bad packets are more likely when traffic is heavy, the result of store-and-forward operation is that more bandwidth is available for good packets when the traffic load is greatest.

To minimize the possibility of dropping frames on congested ports, each Magnum 4K16 Switches dynamically allocates buffer space from a 512K memory pool, ensuring that heavily used ports receive very large buffer space for packet storage. (Many other switches have their packet buffer storage space divided evenly across all ports, resulting in a small, fixed number of packets to be stored per port. When the port buffer fills up, dropped packets result.) This dynamic buffer allocation provides the capability for the maximum resources of the Magnum 4K16 unit to be applied to all traffic loads, even when the traffic activity is unbalanced across the ports. Since the traffic on an operating network is constantly varying in packet density per port and in aggregate density, the Magnum 4K16 Switches are constantly adapting internally to

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GarrettCom 4K16 manual Up-link Switch at port#1 for Cascading, Frame Buffering and Latency
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4K16 specifications

GarrettCom 4K16 is a state-of-the-art communication platform designed to meet the demands of modern industrial networks. It combines advanced technology with robust features to provide reliable and efficient performance in challenging environments. This device is particularly well-suited for applications requiring high-speed data transfer, such as video surveillance, process control, and smart grid communications.

One of the standout features of the GarrettCom 4K16 is its ability to support 4K video streaming, making it ideal for industries that rely on high-definition video surveillance. The platform offers impressive bandwidth capabilities, allowing for the seamless transmission of large video files without compromising quality or speed. This is particularly important in security-critical applications where every frame matters.

In terms of its technological architecture, the 4K16 incorporates advanced processing power and cutting-edge software that enhance its operational efficiency. The device is equipped with multiple ports, facilitating connections to a range of devices, and supports various protocols, ensuring compatibility with existing infrastructures. This versatility allows organizations to integrate the 4K16 into their current systems with minimal disruption.

The 4K16 also excels in its rugged design, making it suitable for deployment in harsh environments. It boasts enhanced protection against dust, moisture, and temperature fluctuations, ensuring reliable performance even in challenging conditions. This durability is complemented by features such as extended operating temperature ranges and vibration resistance, making it an ideal choice for industrial applications.

Moreover, the GarrettCom 4K16 emphasizes network security as a core component of its design. With integrated security features, it safeguards sensitive data and protects against unauthorized access. This is crucial for industries that handle critical data, such as energy and utilities, where security breaches could have significant repercussions.

In summary, the GarrettCom 4K16 is a powerful and versatile communication platform tailored for industrial applications. Its high-bandwidth capabilities, robust design, and emphasis on security position it as a leading choice for organizations seeking reliability and performance in their networking solutions. Whether for video surveillance, process control, or communication in smart grid applications, the 4K16 stands out as a premium solution that meets the evolving needs of modern industries.
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