Using the TSX-1620 Bridge View

The Frames/Admin, Source Routing/Transparent, and Delta/Percentage buttons each let you choose one of the two display modes for the Bridge Port boxes. The display mode visible on a button is the one not currently selected. Clicking on a button when the button displays the desired mode type chooses that mode type for the Bridge Port boxes. For example, the Frames/Admin button will display Frames when the Admin display mode is in effect and Admin when the Frames display mode is in effect.

The Frames/Admin button allows you to change the information displayed in the Bridge Port boxes between traffic statistics (when Frames is selected) and port state/status (when Admin is selected).

The Frames display mode shows the following Bridge Port information:

•Frms In—Displays the total number of frames, including BPDU frames, received at this bridge port from its attached network segment during the last polling interval.

•Frms Out—Displays the total number of frames, including BPDU frames, transmitted or forwarded through this port to its attached network segment during the last polling interval.

•Forwarded—Displays frames forwarded by this bridge port to another bridge port on the device during the last polling interval. You can change this display using the Delta/Percentage button (described in this section). When Delta is selected, this field displays the total number of frames forwarded by this bridge port to another port on the bridge during the last polling interval. When Percentage is selected, this field displays the percentage of all frames received by the port from its network segment that were forwarded to another port on the bridge during the last polling interval.

When the Admin option is selected, the Bridge Port boxes display port Status — whether the port is enabled or disabled — and port State.

Enabled

The port is able to participate in bridging and the

 

Spanning Tree Algorithm.

Disabled

The port cannot participate in bridging or Spanning Tree

 

operations.

Enabling and disabling a port changes its Port Status, not its Port State.

A port’s State indicates whether or not the port is forwarding packets and participating in the exchange of BPDUs. The Spanning Tree Algorithm determines the state of each port in order to maintain an active topology with no data loops. As a port moves from the blocking to the forwarding state, it will remain in each state for the duration of the Forward Delay in order to prevent data loops while the active topology is changing. Possible port states are as follows:

Disabled

The port has been disabled by management; it cannot

 

receive or forward traffic, and is not participating in the

 

exchange of BPDUs.

Accessing the Bridge Traffic View Window

3-9

Page 56 Page 58
Page 57
Image 57
Cabletron Systems TSX-1620 manual Enabled
Page 56 Page 58

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.
Top Page Image Contents