Chapter 8. 8260 Token-Ring Support

4.4.1

Ethernet MAC Daughter Card (E-MAC)

. . . . . . . . . . . . . . . . . .

64

4.4.2

Token-Ring MAC Daughter Card (T-MAC)

. . . . . . . . . . . . . . . .

66

4.5 Managing 8260 Using DMM and 8250 xMM

. . . . . . . . . . . . . . . . . .

69

4.5.1Managing 8260 with DMM . . . . . . . . . . . . . . . . . . . . . . . . . . 70

4.5.2Managing 8260 with 8250 xMM . . . . . . . . . . . . . . . . . . . . . . . 70

4.6Overview of Management and Control Commands . . . . . . . . . . . . . . 71

Chapter 5. 8260 Intelligent Power Management Subsystem

. . . . . . . . . . .

73

5.1 Intelligent Power Management Subsystem

. . . . . . . . . . . .

73

5.2Power Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

5.3Configuring 8260 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . 76

5.3.1Non-Fault Tolerant Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

5.3.2Fault Tolerant Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

5.4Managing Power in the 8260 . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

5.4.1

Installing 8260

Module in an 8260

Managed by DMM . .

. . . . . . . .

81

5.4.2

Installing 8260

Module in an 8260

Not Managed by DMM

. . . . . . .

83

5.4.3

Installing 8250

Module in a Hub Managed by DMM . . .

. . . . . . . .

83

5.4.4

Installing 8250

Module in a Hub Not Managed by DMM

. . . . . . . .

85

5.5

Controlling Power to the 8260 Modules

. . . . . . . .

85

5.6

Power Management Considerations

. . . . . . . .

85

5.7Power Management Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . 86

5.8Installing the 8260 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . 89

Chapter 6.

8260 Intelligent Cooling Subsystem

. . . . . . . . . . . . . . . . . .

91

6.1 Intelligent Cooling Subsystem

. . . . . . . . . . . . . . . . . .

91

Chapter 7.

8260 Ethernet Modules

. . . . . . . . . . . . . . . . . .

97

7.1Ethernet LAN Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

7.1.1CSMA/CD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

7.1.2Frame Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

7.1.3Data Integrity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

7.1.4Ethernet Addressing Mode . . . . . . . . . . . . . . . . . . . . . . . . . 98

7.2 8260 Ethernet 24-Port 10Base-T Module . . . . . . . . . . . . . . . . . . . . 99

7.310Base-T Module Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

7.4Configuring the 10Base-T Module . . . . . . . . . . . . . . . . . . . . . . . 104

7.5

8260

Ethernet 20/40-Port 10Base-T Module

. . . . . . . . . . . . . . . . .

106

7.6

Configuring the 20/40-Port 10Base-T Modules

. . . . . . . . . . . . . . . .

111

7.7

8260

Ethernet 10-Port 10Base-FB Module .

. . . . . . . . . . . . . . . . .

113

7.810Base-FB Module Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

7.9Configuring the 10Base-FB Module . . . . . . . . . . . . . . . . . . . . . . 118

7.108260 Ethernet Modules Summary . . . . . . . . . . . . . . . . . . . . . . . 120

7.11 8260 Ethernet Security Daughter Card . . . . . . . . . . . . . . . . . . . . 121

7.11.1Operation of Security Card . . . . . . . . . . . . . . . . . . . . . . . . 122

7.11.2Configuring the Security Module . . . . . . . . . . . . . . . . . . . . 124

. . . . . . . . . . . . . . . . . . . . . . . . 129

8.1Token-Ring LAN Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

8.1.1Ring Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

8.1.2Ring Administration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

8.1.3Ring Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

8.1.4Differential Manchester Coding . . . . . . . . . . . . . . . . . . . . . . 132

8.1.5Clock Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

8.1.6Phase Jitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

8.2

8260 Backplane Signalling for TR Segments

134

8.3

Dual Phase Lock Loop

138

vi 8260 Multiprotocol Intelligent Switching Hub

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IBM 8260 manual Intelligent Power Management Subsystem, Chapter Intelligent Cooling Subsystem Ethernet Modules

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.