About the CSX400

ISDN Back-up

The ISDN back-up feature provides a back-up link for a remote site or branch office when one or more primary WAN interfaces for a frame relay circuit or a nailed-up PPP connection fails. The WPIM-S/T serves as the backup medium for this primary connection. The WPIM-S/T uses the ISDN interfaces to back-up any primary interfaces which have been configured for ISDN back-up.

Time to Connect, Time to Disconnect, Connect Retries, Back-up Override, Input Idle Time-out and Output Idle Time-out, are the six back-up parameters used to manage the ISDN Back-up feature on the CSX400, and are described as follows:

Time to Connect — Time to Connect allows you to configure the amount of seconds the primary interface can be in a failed state, before attempting to switch over to the back-up interface.

Time to Disconnect — Time to Disconnect allows you to configure the amount of seconds the restored primary interface must remain connected, before attempting to switch over from the back-up interface.

Connect Retries — Connect Retries allows you to configure the number of tries to restore the back-up interface, before giving up.

Backup Override — Backup Override forces the back-up interface to remain connected, and does not allow the back-up interface to switch back to the primary interface, even if the primary interface is restored.

Input Idle Time-out — Input Idle Time-out allows you to determine the amount of time necessary for data packets to be received, before the interface is automatically disconnected.

Output Idle Time-out — Output Idle Time-out allows you to determine the amount of time necessary for data packets to be transmitted, before the interface is automatically disconnected.

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Cabletron Systems CSX400-DC manual Isdn Back-up
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CSX400-DC, 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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