￿

 

 

 

￿

 

 

 

 

 

 

8260> show ring_map token_ring logical token_ring_2

 

 

 

Token Ring Logical Map for Network TOKEN_RING_2

 

 

 

MAC Address

Slot

Port

 

 

-----------------

-----

----

 

 

 

 

02-00-00-e0-9c-10

06.01

1

 

 

 

 

02-00-00-c0-cc-68

06.01

7

 

 

 

00-00-00-00-00-00

06.01

10

 

 

 

 

08-00-8f-d0-90-fa

06.02

N/A

 

 

 

02-00-00-66-88-8d

06.01

15

 

 

 

￿

8260>

 

 

￿

 

 

 

 

 

Figure 103. Address-to-Port Map Display for a Per-Port Switching Module

Note that in the above display, the module 6.01 is an active per-port switching module and the module 6.02 is a T-MAC installed on this active per-port switching module.

8.11.1.1 Support for Fan-Out Devices

As mentioned in the above procedure, the active per-port switching modules support the attachment of up to a maximum of 8 stations to a single port through the use of fan-out devices.

8.11.1.2 Support for MAC-Less Stations

The active per-port switching supports the attachment of MAC-less stations to all ports except the last port. This is because the Ring Monitor on the last station of

aper-port switching module (that has a MAC-less station) will move downstream

of its associated port when it sees an AMP/SMP MAC frame with the A/C bit set to B′0′ and begins trapping the AMP/SMP MAC frames that it sees. Since the

station attached to this port does not have a MAC address (does not participate

in the neighbor notification) and does not copy any AMP/SMP MAC frame, the Ring Monitor will not see any AMP/SMP MAC frame with the A/C bit set to B′1′

and will remain on the downstream side of this port and as there is no Ring Monitor downstream from this one on the module to ask it to move back upstream of this port, the map for the last port will not be accurate.

Note

The active token-ring modules provide RI/RO ports which allow you to connect your 8260 to other hubs. Note that in this case, no address-to-port mapping is done for the RI/RO ports. The address-to-port map which will be built and maintained by each module are only for the stations which are attached to the module via lobe ports.

8.12IEEE 802.5C Recommended Practice for Dual Ring Wrapback Reconfiguration

Dual-ring recovery as recommended by IEEE 802.C is intended for applications that require very high availability and recovery from media and station failures.

166 8260 Multiprotocol Intelligent Switching Hub

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Image 188
IBM 8260 manual Address-to-Port Map Display for a Per-Port Switching Module

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.