the signal passes from one station to another and ultimately can result in loss or corruption of data. This is a major reason for the limit on the maximum number of stations supported on a token-ring networks. Note that this limit varies depending on the speed of the ring and type of lobe cables used in attaching the workstations to the hub. Also, there is limitation on the type and the length of lobe cable.

To address these limitations, the 8260 provides the following types of functions on the token-ring media modules:

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Passive port technology

Active port technology

Before looking at the passive and active port technology as implemented in the 8260, this is an appropriate time to review the signalling used on the 8260 backplane for the token-ring segments.

8.2 8260 Backplane Signalling for TR Segments

The ShuntBus on the 8260 backplane consists of the circuitry to accommodate 10 token-ring segments. The circuitry for each token-ring segment on the backplane forms a physical ring on the backplane with a self-shorting connector at each slot location. Connection from the modules to the backplane can be made by breaking into the ring via these self-shorting connectors. When a token-ring module is installed on the 8260, the backplane rings are broken via the self-shorting connectors and are completed through the circuitry on the modules. These rings can also be bypassed through the inserted module (passively) via the use of relays on the module. This is shown in Figure 81 on page 135.

134 8260 Multiprotocol Intelligent Switching Hub

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IBM 8260 manual Backplane Signalling for TR Segments
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8260 specifications

The IBM 8260 is a significant entry in the realm of enterprise servers, recognized for its performance, scalability, and robust features designed to cater to demanding business environments. It primarily serves as a high-capacity server for large organizations, capable of handling extensive workloads and complex applications without compromising speed or efficiency.

One of the standout features of the IBM 8260 is its powerful processing capabilities. It typically comes equipped with multiple processor units based on the IBM POWER architecture, which is renowned for its high-performance computing. This architecture allows the server to execute numerous simultaneous tasks, making it ideal for environments that require multitasking and high throughput.

Memory capacity is another key characteristic of the IBM 8260. Depending on the specific configuration, it can support substantial amounts of RAM, ensuring that applications can run effectively without the bottlenecks often associated with data-intensive tasks. This is crucial for enterprises that rely on real-time data analytics, large database management, and resource-heavy applications.

In terms of storage, the IBM 8260 offers flexible options. It supports a variety of storage solutions, including solid-state drives (SSDs) and traditional hard drives, catering to different performance and capacity needs. This scalability in storage helps organizations manage their data effectively while ensuring quick access and retrieval times.

Connectivity is also a prominent feature of the IBM 8260. The server includes advanced networking capabilities, supporting various protocols and technologies that facilitate fast data transfer and communication between devices. This enhances overall network performance, essential for businesses that depend on cloud computing and distributed computing environments.

Additionally, the IBM 8260 is designed with a focus on reliability and availability. It incorporates redundant components, such as power supplies and cooling systems, minimizing the risk of downtime. This is critically important for enterprises that require continuous availability of services.

The server’s management features are also noteworthy. IBM provides a suite of management tools that allow IT administrators to monitor performance, configure hardware settings, and troubleshoot issues seamlessly. This ease of management is bolstered by automation capabilities, enabling organizations to enhance operational efficiency.

In conclusion, the IBM 8260 stands out in the competitive server landscape due to its high processing power, extensive memory and storage options, advanced connectivity, reliability features, and robust management tools. Such attributes make it a viable choice for organizations seeking to enhance their IT infrastructure and streamline their operations effectively.
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