Bridging

To delete an address:

1.Click to highlight the address entry in the Address Entry panel that you wish to delete from the filtering database.

2.Click on .

Clearing All Permanent, Static, or Dynamic Entries

To erase all Permanent, Static, or Dynamic entries from the Filtering Database,

click on the associated button in the upper portion of the window.

Ethernet and Token Ring Special Filter Databases

While the Filtering Database deÞnes Þlters for all packets from a particular source address, the Ethernet Special Filter Database and the Token Ring Special Filtering Databases allow you to Þlter packets through an Ethernet or a Token Ring bridge, respectively, using a special Þltering scheme.

When a packet is received at an Ethernet bridging interface, it is Þrst checked against the Ethernet Special Filter Database to see if any Þltering action applies to it. Because of this, an entry in the Ethernet Special Filter Database takes precedence over a Þlter entry in the Filtering Database that would otherwise apply to the packet.

The Ethernet Special Filter Database allows you to:

¥DeÞne and save a Þlter based on a combination of Source Address, Destination Address, Ethernet Data Type and Data (including the offset).

¥Specify the receive ports at which the Þlter will take effect.

¥Specify the forwarding/Þltering action at each bridging port of the device.

When checking for Transparent Þltering information, the bridge Þrst checks the Token Ring Special Filter Database to see if any Þltering action applies to it. Because of this, a Þlter entry in the Token Ring Special Filter Database takes precedence over a Þlter entry in the Filtering Database that would otherwise apply to the packet.

Looking at each enabled Þlter, starting with the lowest numbered Þlter, the bridge compares the following Þelds to the corresponding Þelds in the received packet:

¥Destination address

¥Source address

¥Ethernet or Token Ring data type

¥Up to 16 hex integers (64 bytes) of the data Þeld

In addition, a Þlter can also specify at which port or ports the packet must be received for the Þlter to be applicable. If a received packet matches all the contents of an enabled Þlter, the bridge forwards the packet to the deÞned set of ports.

Ethernet and Token Ring Special Filter Databases

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Cabletron Systems CSX200, CSX400 manual Ethernet and Token Ring Special Filter Databases
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CSX200, CSX400 specifications

Cabletron Systems was a leading developer of networking solutions, and its CSX400 and CSX200 series of high-performance switches represent some of the key innovations in the field of enterprise networking during their time. Both models were geared towards enhancing network reliability, efficiency, and speed, particularly in environments where heavy data traffic and complex networking demands were prevalent.

The CSX400, designed for larger enterprises, boasts a robust architecture capable of handling significant throughput. One of its standout features is its stackable design, allowing multiple switches to be interconnected and managed seamlessly as a single unit. This scalability provides organizations with the flexibility to expand their networks without significant infrastructure overhauls. The CSX400 supports various Ethernet standards, including 10/100 Ethernet and Gigabit Ethernet, positioning it to effectively manage both legacy and modern networking requirements.

In addition to its scalability, the CSX400 is distinguished by its advanced Layer 2 and Layer 3 routing capabilities. This dual-layer functionality enables efficient data handling and is instrumental in managing traffic between different network segments. Moreover, the switch incorporates features like VLAN (Virtual Local Area Network) support and Quality of Service (QoS) prioritization, allowing for enhanced performance of critical applications and streamlined bandwidth allocation.

On the other hand, the CSX200 series is tailored for smaller enterprises or branch offices needing a reliable yet efficient networking solution. Despite its compact design, the CSX200 is equipped with essential features that promote effective network management and security. It offers a simplified management interface, making it user-friendly for network administrators. The switch also provides essential access control measures, employing technologies like IEEE 802.1X for network access security.

Both the CSX400 and CSX200 prioritize performance through the incorporation of advanced switching technologies. They support features such as Spanning Tree Protocol (STP), enabling loop-free topologies and enhanced network resilience. These attributes are particularly crucial in dynamic networking environments where downtime can have significant repercussions on business operations.

Overall, Cabletron Systems' CSX400 and CSX200 series represent a blend of scalability, advanced routing capabilities, and user-friendly management, making them vital assets for organizations looking to optimize their network infrastructure during a period of rapid technological evolution. With their rich feature sets and unwavering performance, these switches helped pave the way for modern networking solutions that cater to diverse enterprise needs.
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