Chapter 9. 8260 Token-Ring Modules

8.4 Jitter Attenuator Daughter Card (JADC) . . . . . . . . . . . . . . . . . . . 141

8.5Passive Port Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

8.6Active Port Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

8.6.1

Per-Port Switching on the Active Modules

143

8.6.2

Static Switch on the Per-Port Switching Modules

145

8.7 Signal Flow on the 8260 Token-Ring Modules

148

8.8Speed Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

8.8.1

Speed

Detection

on

Active Modules

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

149

8.8.2

Speed

Detection

on

Passive Modules

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

149

8.9Beacon Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

8.9.1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

8.9.2Beacon Recovery in the 8250 . . . . . . . . . . . . . . . . . . . . . . . 151

8.9.3Beacon Recovery in the 8260 . . . . . . . . . . . . . . . . . . . . . . . 155

8.9.4Beacon Recovery on the Module Switching Modules . . . . . . . . . 158

8.9.5 Beacon Recovery on the Per-port Switching Modules

. . . . . . . .

159

8.10

Address-to-Port Mapping for Module Switching Modules

. . . . . . . .

160

8.11

Address-to-Port Mapping for Per-Port Switching Modules

. . . . . . . .

164

8.12IEEE 802.5C Recommended Practice for Dual Ring Wrapback Reconfiguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

8.12.1

Trunk

Wrapping on the Active Per-Port Switching Modules

. . . .

168

8.12.2

Trunk

Wrapping on the Active Module-Switching Modules

. . . . .

169

8.12.3Merge Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

8.12.4

Trunk

Unwrapping on the Per-Port Switching Modules

. . . . . . .

170

8.12.5

Trunk

Unwrapping on the Module-Switching Modules

. . . . . . . .

170

. . . . . . . . . . . . . . . . . . . . . . . 173

9.1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

9.2

Configuring Token-Ring Network Parameters

173

9.3

8260 18-Port Active Per-Port Switching Module

174

9.3.1

Configuring the 18-Port Active Per-Port Switching Module

177

9.4

8260 18-Port Active Module Switching Module

180

9.4.1

Configuring the 18-Port Active Module Switching Module

180

9.5

8260 20-Port Passive Module Switching Module

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

180

9.5.1

Configuring the 20-Port Passive Module

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

183

9.6

8260 Dual Fiber Repeater Module

185

9.6.1

Configuring the Dual Fiber Repeater Module

188

Chapter 10. 8260 RMON Support

191

10.1RMON Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

10.1.1Network Probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

10.1.2RMON Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

10.2RMON Goals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

10.2.1Offline Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

10.2.2Preemptive Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . 194

10.2.3Problem Detection and Reporting . . . . . . . . . . . . . . . . . . . . 194

10.2.4Value Added Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

10.2.5Multiple Managers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

10.3Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

10.4

Managing the Ethernet LAN Environment

195

10.4.1

Managing Ethernet LANs with RMON

195

10.5

Managing the Token-Ring LAN Environment

201

10.5.1

Managing Token-Ring LANs with RMON

201

10.6

Monitoring Functions Supported In 8260

212

10.6.1

Monitoring Functions Supported by E-MAC

213

10.6.2

Monitoring Functions Supported by T-MAC

214

Contents vii

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IBM 8260 manual Jitter Attenuator Daughter Card Jadc, Speed Detection Active Modules 149 Passive Modules, 185, 191

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.