Security

Figure 6-3. The Addresses Window

3.On the left side of the window, the Learned Addresses list box will display all source addresses detected by the selected port during the last ageing interval (see Chapter 4, Source Address, for more information on the ageing interval). On the right side of the window, the Secure Addresses list box will display the source addresses which have been secured for that port. Remember, as long as the port is in a securable state, the first two addresses detected by the port are automatically secured; you can add additional addresses, or delete the default addresses and secure new ones, as follows:

a.To add a learned address, click to highlight the desired address in the

Learned Addresses list box, then click on . A confirmation window will appear; click on Yes to secure the selected address.

NOTE

If security has never been enabled, new addresses will replace any existing learned addresses. If security has ever been enabled — even if it is not currently enabled — new addresses will be stored in addition to any learned addresses.

b.To delete a secured address, click in the Secure Addresses list box to

highlight the address you wish to delete, then click on . A confirmation window will appear; click onYes to delete the address, or No to leave the address secured.

c.To add an address not yet detected by the port, make sure no Learned

Addresses are highlighted, then click on ; the Add MAC Address window, Figure 6-4, will appear.

Configuring Security

6-9

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Cabletron Systems SEHI-22/24, SEHI-32/34 manual Addresses 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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