2 About the CSX400

The CSX400 (Figure 1) is an access device that provides Ethernet Local Area Network (LAN) connectivity via two Ethernet Port Interface Modules (EPIMs), and offers high-speed Wide Area Network (WAN) access to remote sites via two WAN Port Interface Modules (WPIMs). The CSX400 supports IEEE 802.1d transparent bridging, IP and IPX routing, ISDN, Dynamic Host Configuration Protocol (DHCP), Network Address Translation (NAT) routing, and Inverse Multiplexing (IMUX) between Ethernet LANs across a WAN.

The CSX400 operates from a standard ac power source and the CSX400-DC operates from a dc voltage source to meet all the requirements for installation into Telephone Central Office facilities.

Figure 1 The CSX400

CSX400 Hardware

This section details the CSX400 hardware capabilities.

WAN Connection

The CSX400 supports Point-to-Point Protocol (PPP) including: Link Control Protocol (LCP), BNCP, IPCP, IPXCP, LQM, Multilink Protocol (MP) and CHAP and PAP, ISDN-BRI and Frame Relay protocols through one of the following WAN port interface modules (WPIMs):

•The WPIM-T1 provides a T1 interface through a front panel RJ45 port and includes a built-in Channel Service Unit/Digital Service Unit (CSU/DSU) for direct connection to a T1 line. The WPIM-T1 provides both Full T1 or Fractional T1 using 56 or 64 Kbps Time Slots, with a total throughput of up to 1.544 Mbps.

CSX400 and CSX400-DC User’s Guide 5

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Cabletron Systems CSX400-DC manual CSX400 Hardware, WAN Connection
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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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