Using the TSX-1620 Bridge View

NOTES

A Source Route-capable bridge has the ability to embed Largest Frame size information into the explorer packets. If there are multiple bridge hops from one end node to another, this allows the end stations to realize the maximum frame size limits for any network segment in the path between them, and adjust their Mtu size accordingly.

If there are multiple hops from one end node to another, consider the lowest Largest Frame Size of all network segments and bridges in the path when setting the Largest Frame Size. It is possible that an older bridge may support a lower maximum frame size; subsequently the stations would have to reduce their Mtu size in order to communicate over it. Largest Frame size is different for 4 and 16 Mbps Token Rings (4,500 bytes and 18,000 bytes, respectively), and Ethernet network segments have a maximum frame size of 1,500 bytes.

STE Span Mode

The Spanning Tree Explorer Span Mode determines how a bridge port behaves when it receives an STE packet (also known as Single Route Explorer packet). Possible STE Span modes are disabled, forced, and auto-span, as described earlier in this section.

Changing Source Routing Port Parameters

To change a port’s Hop Count, Local Segment, Bridge Number, or Target

Segment:

1.In the Source Routing Configuration window, use the scroll list to display the physical TSX-1620 port for which you want to change values.

2.Select a port by clicking mouse button 1 on the port you want to change. You can only select one port at a time. The port’s index number and Source Routing parameters appear in the boxes below the list.

3.Highlight and edit the Hop Count, Local Segment, Bridge Number, and Target Segment boxes as required.

4.Once you have made all of your edits, click on the Apply button.

To change a port’s Largest Frame or STE Span Mode:

1.In the Source Routing Configuration window, use the scroll list to display the physical TSX-1620 port you want to change.

2.Click mouse button 1 on the port you want to change (you can only select one port at a time). The port’s Source Routing parameters appear in the boxes below the list.

3.Click on the Largest Frame or STE Span Mode button and then drag to the appropriate menu choice. The selected value appears on the button.

4.Once you have made all of your choices, click on the Apply button.

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The Source Routing Configuration Window

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Cabletron Systems TSX-1620 manual Changing Source Routing Port Parameters, STE Span Mode
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TSX-1620 specifications

The Cabletron Systems TSX-1620 is a pioneering piece of network hardware that played a significant role in the evolution of networking technologies during the 1990s. This well-engineered device is primarily recognized as a multi-port Ethernet switch that was designed to provide high-speed, reliable connectivity for local area networks (LANs). As organizations increasingly demanded robust performance and enhanced network capabilities, the TSX-1620 emerged as a powerful solution to address these needs.

One of the key features of the TSX-1620 is its support for both 10Base-T and 100Base-T standards, catering to both standard Ethernet and Fast Ethernet connections. This versatility allowed businesses to easily transition from older Ethernet systems to newer, faster specifications without replacing their entire infrastructure. The switch could intelligently manage traffic between devices, minimizing collisions and ensuring that data packets were transmitted efficiently.

The architecture of the TSX-1620 includes support for various advanced technologies that enhance network performance. Its store-and-forward switching capability improves data integrity by checking packets for errors before forwarding them to their destination. This process reduces the risk of corrupted data affecting network performance, making it especially valuable for mission-critical applications.

Another notable feature is its robust security tools. The TSX-1620 incorporates VLAN (Virtual Local Area Network) support, enabling network administrators to segment traffic and improve security across different departments or user groups. This not only mitigates the risk associated with unauthorized access but also optimizes network traffic by confining broadcasts to designated VLANs.

Scalability is a prominent characteristic of the TSX-1620. With ports available for expansion, organizations could easily increase their network capacity as their needs grew. This feature promoted long-term investment in network infrastructure, allowing businesses to adapt quickly to changing demands without incurring substantial costs.

Reliability is paramount in networking equipment, and the TSX-1620 does not disappoint. Engineered with high-quality components, this switch was built to operate efficiently in a variety of environments while maintaining stable performance. Its design ensures a cooling mechanism that minimizes overheating, thereby prolonging its operational lifespan.

In summary, the Cabletron Systems TSX-1620 represents a significant advancement in network switch technology during its era. Its combination of speed, versatility, security features, and robust architecture made it a valuable asset for organizations seeking to enhance their networking capabilities and prepare for the future.
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