Bridging

To set the operational mode of the SONET port via the SONET/SDH

ConÞguration window:

1.Click in the radio box adjacent to the appropriate selection, SONET or SDH, to choose the data transmission standard to be used by the interface.

2.Click on Apply to set your change at the interface, or Cancel to exit the SONET/SDH Configuration window without applying any changes.

SONET/SDH Statistics Window

SONET/SDH statistics are available for each FE100-Sx or APIM-2x port interface module installed in your device. The same statistics apply whether you have conÞgured the interface to operate according to SONET or SDH transmission standards.

The FE100-Sx and the APIM-2x port interface modules are SONET path-terminating equipment (PTE). They act as an endpoint of an end-to-end connection between themselves and another similar port interface module. As endpoints, they are capable of generating and receiving the Path Overhead information contained within the SPE (Synchronous Payload Envelope) of the base-level SONET or SDH signals. Simply put, overhead is the extra bits in the digital stream that relay information besides trafÞc signals.

The Path Overhead provides for end-to-end performance monitoring of the link, the signal label (the content of the SPE, including status of mapped payloads), the pathÕs current status, and path trace capabilities.

The SONET/SDH Statistics window enables you to view some of the error information contained within the Path Overhead that your FE100-Sx or APIM-2x is receiving from the remote endpoint.

The window will inform you whether there have been speciÞc defects experienced on the SONET link, and if the network has experienced any signiÞcant unavailability time as a result.

With a SONET link, there are three levels of error conditionsÑanomalies, defects, and failures.

¥Anomalies are small discrepancies between a desired and actual characteristic of an item, which when occurring singly will not interrupt the ability of the SONET network elements to perform their required functions.

¥Defects indicate that anomalies have reached a level where the ability of the SONET network elements to perform their required functions has been interrupted. Defects are used in performance monitoring and in determining the faultÕs cause, and have impact on consequent actions on the network.

¥Failures indicate that a network element has been unable to perform its required functions beyond a maximum time allocated to a given error condition.

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SONET Port Configuration

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Cabletron Systems CSX400, CSX200 manual SONET/SDH Statistics Window
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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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