Repeater Redundancy

Chapter 4

This chapter describes how to conﬁgure and enable redundant circuits.

Setting Network Circuit Redundancy

The redundancy application gives you the ability to deﬁne redundant circuits for your SEHI to ensure that critical network connections remain operational. Each circuit has a designated primary port and one or more backup ports. The SEHI monitors the link status of the primary port’s connection to one or more network IP addresses; if the link fails, the SEHI automatically switches trafﬁc to a backup port.

NOTE

Before you conﬁgure redundancy, make sure that only the primary physical link is connected to the network. If a backup port is connected before you conﬁgure and enable redundancy, you create a data loop.

To open the main Repeater Redundancy window:

from the icon:

1.Click on the appropriate device icon to display the icon menu.

2.Drag down to Redundancy and release.

from the Hub View:

1.Click on to display the Device menu.

2.Drag down to Redundancy and release.

from the command line (stand-alone mode):

1. From the appropriate directory, type:

4-1

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.

Cabletron Systems SEHI-22/24, SEHI-32/34 Repeater Redundancy, Setting Network Circuit Redundancy

Models: SEHI-22/24 SEHI-32/34