Introduction to SPMA for the SEHI-22/24 and SEHI-32/34

applications can be accessed from the icon menu (if you are using a management platform) and from the command line (if you are running in stand-alone mode); in addition, several applications can also be accessed from within the Hub View, a graphical display of the SEHI and its ports.

The SEHI User’s Guide describes how to use many of the applications included with the module; note that the instructions provided in this guide apply to the SEHI regardless of the operating system or management platform you are using. Instructions for launching each individual function from the command line (stand-alone mode) are also included in each chapter.

Following is a description of the applications described in this guide; while we provide as much background information as we can, we do assume that you’re familiar with Ethernet networks and general network management concepts:

Chapter 1, Introduction to SPMA for the SEHI-22/24 and SEHI-32/34, describes the SEHI User’s Guide and the conventions used in this and other SPMA manuals, explains where to find information about the SEHI, and tells you how to contact Cabletron Systems Technical Support.

Chapter 2, Using the SEHI Hub View, describes the visual display of the Hub and explains how to use the mouse within the Hub View; the operation of some basic functions available only from within the Hub View (changing the Hub View display, opening menus and windows, enabling and disabling ports, checking device and port status, and so on) are also described.

Chapter 3, Link/Seg Traps, describes how to configure link and segmentation traps to suit your management needs. You can access the Link/Seg Traps application from the icon menu, the Hub View, or the command line.

Chapter 4, Redundancy, describes how to configure redundant circuits to keep your network connections up and running in the event of a single port’s failure. You can access the Redundancy application from the icon menu, the Hub View, or the command line.

Chapter 5, Source Address, describes how to display the Source Address List, how to set the ageing time, and how to configure source address traps; it also discusses the effects of source address locking. You can access the Source Address application from the icon menu, the Hub View, or the command line.

Chapter 6, Security, describes how to configure intruder protection for all MIMs installed in the SEHI-controlled hubstack, and how to configure eavesdropper protection for any installed LANVIEWSECURE hubs. You can access the Security application from the icon menu, the Hub View, or the command line.

Appendix A, SEHI MIB Components, lists the IETF MIBs supported by the SEHI, and describes their arrangement in a series of MIB components. A description of the objects controlled by each component is also included.

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Using the SEHI User’s Guide

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Cabletron Systems SEHI-32/34, SEHI-22/24 manual Using the Sehi User’s Guide

SEHI-22/24, SEHI-32/34 specifications

Cabletron Systems was a notable player in the networking hardware market during the rise of local area networks (LANs) in the late 20th century. Among its innovative products were the SEHI-22/24 and SEHI-32/34 modules, which were designed to enhance network capabilities in enterprise environments.

The SEHI-22/24 and SEHI-32/34 were versatile high-performance Ethernet switch modules that offered significant advantages in network management and connectivity. These modules were designed to work with Cabletron's modular switching and routing architecture, allowing for scalable solutions tailored to specific network demands. A key feature of the SEHI series was its support for a range of Ethernet standards, ensuring compatibility with diverse networking environments.

One notable characteristic of the SEHI-22/24 was its ability to support both 10Base-T and 100Base-TX Ethernet technologies. This dual support enabled organizations to leverage existing 10 Mbps infrastructure while facilitating upgrades to 100 Mbps speeds without needing a complete overhaul of the network. Similarly, the SEHI-32/34 offered even greater connectivity options, accommodating more users and devices while maintaining high throughput and low latency.

In terms of management features, the SEHI series was equipped with extensive traffic management capabilities, including Quality of Service (QoS) features that prioritized bandwidth for critical applications. This ensured that essential services such as voice over IP (VoIP) and video conferencing could function optimally, even during heavy network loads.

Furthermore, both modules featured advanced diagnostics and monitoring tools that provided network administrators with critical insights into traffic patterns and potential bottlenecks. This functionality was essential for maintaining network health and optimizing performance, especially in dynamic business environments.

Security also played a crucial role in the design of the SEHI-22/24 and SEHI-32/34. The modules incorporated support for various authentication methods and access controls, ensuring that sensitive data remained protected within the corporate network.

In summary, Cabletron Systems’ SEHI-22/24 and SEHI-32/34 offered significant advancements in Ethernet switching technology, allowing organizations to build robust, scalable, and secure networks. With their impressive features, compatibility, and capacity for management and security, these modules were instrumental in shaping reliable networking solutions for enterprises navigating the rapidly evolving digital landscape.