Repeater Redundancy

of retries you can enter into this field is 0-16. Be sure to click on before exiting the window to save your changes.

3.With the appropriate Circuit Name highlighted, click to access the Add Circuit Address window, Figure 4-4.

Figure 4-4. The Add Circuit Address Window

In this window you can define IP addresses of up to 8 devices on the network. These addresses identify the destination nodes that the SEHI looks for to determine the status of the active link. If the device determines that it has lost the link with the first address in the Circuit Addresses list, it checks the link status with the next address. If it can’t establish a link with any address in the list, the device switches traffic to a backup port.

a.To add a circuit address, enter a valid network IP address and then click

. Repeat as necessary to add additional addresses. Click

to exit the window.

NOTE

The SEHI will poll the circuit addresses in the order they were entered.

b.To delete a circuit address, highlight the address in the Circuit Addresses

list in the Channel X Redundancy window, and click .

4.The bottom half of the Channel X Redundancy window is where you define the primary port and backup ports for the highlighted Circuit Name. The Status of the Circuit Name must be set to Disabled when you configure the port list. Using the Module and Port boxes and the Add button, enter up to 8 ports to define the circuit.

5.By default, all ports are created as Inactive Backup ports.You should set one port to be the Primary port and one port to be the Active port. Typically, the

same port is both Primary and Active but this is not required. To select primary

and active ports, click button 1 on a port to highlight it then click ;

select the same or another port and click . Only one port can be the Primary port and only one port can be Active at any one time; if you set a

4-4

Setting Network Circuit Redundancy

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Cabletron Systems SEHI-32/34, SEHI-22/24 manual Add Circuit Address Window
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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.
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