Cabletron Systems CSX200 manual Point-to-Point Protocol PPP, PAP and Chap Security

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CSX200 Firmware Support

The ANSI standard defines a mechanism for the network to signal the existence of congestion, called Explicit Congestion Notification (ECN) bits. Frame Relay uses FECN (Forward ECN) and BECN (Backward ECN) bits to notify end user devices about network congestion. Although the Frame Relay Protocol does not respond to congestion, some higher layer protocols for end-user devices may respond to ECNs by recognizing that delays have increased, or that frames have been dropped.

Point-to-Point Protocol (PPP)

PPPis a data link layer industry standard WAN protocol for transferring multi-protocol data traffic over point-to-point connections. With this protocol, options such as security, data compression, and network protocols can be negotiated over the connection. Data compression allows Frame Relay to negotiate compression over Frame Relay permanent virtual circuits (PVCs). Frame Relay is a packet-switching data communications protocol that statistically multiplexes many data conversations over a single transmission link.

The CSX200 supports synchronous PPP over an ISDN WAN port (WPIM-S/T). In Single Link Mode, PPP uses one ISDN B channel for data transmission. PPP runs over each ISDN B channel for two separate conversations (split B channel). In Multi-Link Protocol mode, PPP simultaneously sends and receives data over two ISDN B channels on the same connection to optimize bandwidth usage. The STAC Electronics Stacker LZS Compression Protocol is supported over PPP, providing up to 4:1 data compression.

PAP and CHAP Security

The CSX200 supports the Password Authentication Protocol (PAP) and Challenge Handshake Authentication Protocol (CHAP) under PPP.

PAP provides verification of passwords between devices using a two-way handshake. One device (peer) sends the system name and password to the other device (authenticator). Then the authenticator checks the peer’s password against the configured remote peer’s password and returns acknowledgment.

CHAP is more secure than PAP as unencrypted passwords are not sent across the network. CHAP uses a 3-way handshake and supports full or half-duplex operation. In half-duplex operation, the authenticator device challenges the peer device by generating a CHAP challenge. The challenge contains an MD5 algorithm with a random number that your encrypted password and system name. The peer device then applies a one-way hash algorithm to the random number and returns this encrypted information along with the system name in the CHAP response. The authenticator then runs the same algorithm and compares the result with the expected value. This authentication method depends upon a password or secret, known only to both ends locally.

CSX200 Installation Guide

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Contents CSX200 CyberSWITCH Installation Guide Page FCC Notice Vcci Notice Exclusion of Warranty and Disclaimer of Liability Declaration of Conformity Contents 10BASE-T LAN Requirements Appendix a Wpim Cable Specifications Index Related Documentation How to Use This GuideAppendix D, Glossary, defines commonly used networking terms Following conventions are used throughout this guide Document ConventionsYour email address Getting HelpWAN Connection CSX200 HardwareEthernet LAN Connection Remote Management Capabilities Optional FeaturesCSX200 Firmware Support Ieee 802.3 EthernetWAN Protocols Dhcp and NAT Firmware Data CompressionFrame Relay Protocol PAP and Chap Security Point-to-Point Protocol PPPMultilink Protocol LQMBridging and Routing HdslAbout the CSX200 Bridging and Routing Protocol Filtering Simple Network Management Protocol Snmp System PasswordsLQM MIB RFC1989 PPP MP MIB RFC1990 About the CSX200 Software and Firmware Upgrades About the CSX200 CSX200 Installation Guide 10BASE-T Twisted Pair Network Network RequirementsEthernet Twisted Pair Ports Port Descriptions10BASE-T LAN Configuration Connecting UTP Cables to Ports 1 ThroughCable Pinouts RJ45 Crossover Cable Unpacking the CSX200 Installation GuidelinesRemoving the CSX200 Cover Removing the Plastic Chassis Cover Installing a WpimInstalling WPIMs COMP/ENCR Module Installation Tabletop and Shelf Installations Installing the CSX200Tabletop or Shelf Installation Rackmount InstallationCSX200 Rackmount Hardware Attaching the Strain-Relief BracketAttaching the Strain-Relief Bracket Attaching the Rackmount BracketsInstalling the CSX200 in a 19-Inch Rack Powering the CSX200Troubleshooting Troubleshooting Troubleshooting Troubleshooting the LAN Troubleshooting CSX200 HardwareLink LNK LED is RED Troubleshooting the WANLink LNK LED is Amber Status 1 STS1 LED is OFFStatus 1 STS1 LED is RED Status 1 STS1 LED is Green Status 1 STS1 LED is AmberStatus 2 STS2 LED is OFF Status 2 STS 2 LED is RED WPIM-HDSL Installed in CSX200Status 2 STS2 LED is Green Status 2 STS2 LED is AmberTest TST LED is Amber blinking Investigating Software Configuration ProblemsConnection to Device Fails During Software Configuration User Cannot Communicate with Remote Network StationInvestigating Software Configuration Problems Troubleshooting CSX200 Installation Guide Table A-1 T-1 Interface Cable Part Numbers Table A-2 T-1 Connector Pin AssignmentsTable A-4 Network Pin Assignments Table A-3 DTE Pin AssignmentsTable A-5 WPIM-SY Interface Cables WPIM-SYEIA-449 Table A-6 EIA-449 InterfaceTable A-7 EIA-449 Interface Cable Pin Assignment Table A-9 V.35 Interface Cable Pin Assignment Table A-8 V.35 InterfaceDrain EIA-232 Table A-10 EIA-232 InterfaceTable A-11 EIA-232 Interface Cable Pin Assignment Table A-13 X.21 Interface Cable Pin Assignment Table A-12 X.21 InterfaceEIA-530, EIA-530 ALT A, EIA-530 A, and EIA-530 a ALT a DCE Shield Drain Table A-17 Network Pinout Assignments Table A-16 DDS Interface Cable Part NumberTable A-19 Network Interface Table A-18 WPIM-E1 Connector InformationTable A-21 Network Interface Table A-20 DTE InterfaceTable A-23 WPIM-DI Network Table A-22 WPIM-DI Connector InformationTable A-25 WPIM-HDSL Network Interface Cable Pin Assignments Table A-24 WPIM-DI Drop and InsertPage Specifications and Standards Compliance Table B-1 Hardware SpecificationsIndividual Wpim Regulatory Compliance CSX200 Regulatory ComplianceWPIM-SY WPIM-E1 Table C-2 WPIM-DDS Only Table C-1 WPIM-DI and WPIM-T1Appendix C FCC Part 68 User’s Information for CSX200 FCC Part 68 User’s Information for CSX200 Agree to provide With proper documentation Glossary Appendix D Glossary Glossary Appendix D Glossary Glossary Appendix D Glossary Index Index
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CSX200 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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