11.8.6 Destination Address Filtering

Destination address filtering allows you to use the contents of the filtering database to forward or discard frames. Destination address filtering is always performed by the Multiprotocol Interconnect module. However, certain configurable parameters as described below will affect the operation of the destination address filtering:

∙If the port is operating in normal mode and the destination address of the frame is found in the filtering database, the packet is bridged according to the disposition specified for that MAC address (other filters permitting).

∙If the port is operating in normal mode and the destination address of the frame is not found in the filtering database, the frame is sent on all the other ports (flooded) enabled for transparent bridging (other filters permitting).

∙When a packet is received and the port is operating in security mode, if no static/permanent entry is found in the filtering database for the destination address of the frame, the packet is discarded. If a static/permanent entry is found, the frame will be forwarded (other filters permitting).

11.8.6.1 Source Address Filtering

Source address filtering allows you to specify the stations from which frames will be bridged. Source address filtering may be enabled/disabled for each port using the Transparent Bridging Port Parameters and the Source Routing Port Parameters panels.

If source address filtering is enabled, when a packet is received, the module searches the filtering database for the source address. If it is present (it must be permanent or static) and address disposition is the receiving port, then the packet will be forwarded (other filters permitting). Otherwise, the packet is discarded. This ensures that only the frames from predefined MAC addresses and on predefined networks will be able to communicate through the bridge.

Also, source address filtering, combined with security mode, allows you to forward only the traffic between predefined stations and on predefined networks.

11.8.6.2 Broadcast/Multicast Filtering

When the port is operating in security mode, all the broadcast/multicast frames will be discarded. However, by setting Broadcast/Multicast Filtering on the secure port to Always Accept Multicast, all broadcast and multicast traffic will be accepted from that port and forwarded to all the other ports.

Note that in normal mode with the default disposition of flood, the broadcast/multicast traffic is forwarded regardless of the setting of this filter.

11.8.6.3 Custom Filtering

This facility allows a number of custom tests to be applied to the received traffic to determine if the frame should be forwarded or discarded. This facility is offered on a per port basis; that is, you can perform different tests on different ports, and is applied after the standard destination address filtering (and source address filtering if enabled). Therefore, packets discarded during the destination address filtering (and source address filtering) are not subject to custom filtering.

To perform custom filtering, you must perform the following:

1.Define all the tests that you may want to be applied to the received frames by the Multiprotocol Interconnect module. This is done by creating a Custom

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IBM 8260 manual Destination Address Filtering, Source Address Filtering, Broadcast/Multicast Filtering, Custom Filtering
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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.

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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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