Bridging

¥When a source routing bridge processes the explorer frame, it adds a unique identiÞer to the frame in a reserved portion of the frame. This identiÞes the segment the frame was received from, followed by the speciÞc bridge, and Þnally the segment it was forwarded onto.

¥When the discovery frame (or frames if more than one route is possible) reaches its destination, it contains a complete record of bridge hops on its route.

¥The destination address then returns All Routes Explorer (using speciÞcally routed frames) and Single Route (spanning tree) Explorer frames (using All Routes Broadcast frames), to the source address.

¥The source station selects one path from the returned explorer frames, and includes that path speciÞcation (with bridge and segment identiÞers) in subsequent transmissions to that particular destination.

All bridges in the topology then examine the routing information Þeld of a speciÞcally source routed frame and either forward it if there is a match in the routing informationÑor if it is an All Routes explorer frameÑor discard it.

The Source Route Configuration Window

The Source Route ConÞguration window allows you to view IP address and routing information, and to view and set source route bridging parameters for any bridging device which supports this menu option.

NOTE

It is recommended that the device be restarted when changes are made that affect source route bridging in order to clear the buffers, but you do not need to restart for the changes to take effect.

Source Route Configuration Fields

IP Address

This Þeld displays the Internet Protocol (IP) address, which acts as a logical identiÞer on the network, currently assigned to each port on the device. This is needed for SNMP network management capability. The IP address is expressed in dotted decimal notation (four decimal values between 0 and 255, separated by a period, e.g., 255.255.255.255).

This Þeld can only be edited (with the correct security access) via Local Management for the device (or the MIBTools utility). Refer to the appropriate device-speciÞc UserÕs Guide for more information.

Source Route Configuration

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Cabletron Systems CSX200, CSX400 manual Source Route Configuration Window, Source Route Configuration Fields

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.