Cabletron Systems TSX-1620 manual Local Segment Number, Bridge Number, Target Segment Number

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Using the TSX-1620 Bridge View

descriptors (bridge hops) allowed in a packet’s Routing Information Field. A bridge port will discard any explorer packets whose RIF’s exceed the maximum number of routing descriptors.

Local Segment Number

Normally, when assigning local segment numbers, you must assign a unique number to each network segment in a network; this field represents the network segment to which this port is attached physically. The bridge adds the Local Segment number to the routing information field of source route discovery frames. Valid entries range from 0 to 4095. A value of 65535 indicates that no segment number is assigned to this port. For the TSX-1620, you can assign the same local segment number to separate physical rings attached to multiple ports on the TSX-1620, and the device will treat them as if they were a single ring. For each separate local segment number defined for the TSX-1620’s ports, a separate Bridge Port box will be displayed in the Bridge View.

Bridge Number

A Bridge Number uniquely identifies this bridge port when two bridge ports are used to span the same two segments; otherwise unique Bridge Numbers are not necessary for individual ports. The Bridge Number should be in the range of 0 to 15. The value 65535 indicates that no Bridge Number is assigned.

Target Segment Number

The unique network number of the target network segment that the bridge attaches to. Valid entries range from 0 to 4095. A value of 65535 indicates that no target segment number is assigned to this port. Individual ports on a TSX-1620 should each be assigned unique values for this field.

NOTE

The TSX-1620 does not use the Target Segment Number field because it has more than two ports and therefore could have multiple target segments for each local segment.

Largest Frame

The maximum size of a frame’s INFO field that this port can send or receive. The default value for this field is set in the TSX-1620’s firmware. When it receives an explorer frame, the bridge uses its Largest Frame value to decide if it should modify the Routing Control field of the Routing Information field. A Source Route bridge has the ability to embed this information into the explorer packets so that end stations can adjust their Mtu size accordingly.

Possible Largest Frame sizes as defined by the 802.5 source routing bridging specification are 516, 1500, 2052, 4472, 8144, 11407, 17800, and 65535.

The Source Routing Configuration Window

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Contents Portable Management Application For TSX-1620 User’s Guide Page Virus Disclaimer Applicable to licenses to the United States Government only Restricted Rights NoticeContents Contents Chapter Using the TSX-1620 Bridge ViewIntroduction to Spma for the TSX-1620 Using the TSX-1620 User’s GuideIntroduction to Spma for the TSX-1620 What’s not in the TSX-1620 User’s GuideScreen Displays ConventionsIntroduction to Spma for the TSX-1620 Button Using the MouseFTP Getting HelpTSX-1620 Firmware Introduction to Spma for the TSX-1620 TSX-1620 Firmware Using the Hub View Using the TSX-1620 Hub ViewNavigating Through the Hub View Using the TSX-1620 Hub ViewTSX-1620 Hub View Hub View Front PanelIP Address UptimeDevice Name Device LocationPort Status Using the Mouse in the TSX-1620 Hub ViewTSX-1620 Application Displays Interface Application Display Menu Structure Interface Application DisplayBridge Application Display Oper Status Monitoring Device PerformancePort Display Form Interface Port Display Form OptionsStatistics TypeSpeed Interface NumberUsing the TSX-1620 Hub View Port Color Codes for the Interface Application Display Bridge Port Display Form Options AdminTp Frames Forwarded Bridge Port Number Clearing Statistical InformationTp Frames Filtered Sr Frames ForwardedManaging the Device Setting the Polling IntervalsPort Operational State Contact StatusDevice General Status Device ConfigurationUsing the Bridge Config Utility Defining Community Names Configuring Your TSX-1620’s Serial Port Using the TSX-1620 Hub View 11. The if Configuration Window Performing if ConfigurationPerforming Interface Configuration Changing the Displayed InterfaceViewing NetBios Information Port Viewing and Changing System InformationName AddressConfiguring Port Security Setting the Device Date, Time, and Daylight Savings ModeViewing Your Port Security Settings Using the TSX-1620 Hub View Configuring Your Port Security Settings 17. The Interface List Window Viewing the Interface ListAccessing Bridge Management Accessing the MIB I, II ToolPerforming Source Routing Configuration for a Port Viewing a Bridge Port’s Source Address List Enabling and Disabling Bridge Ports Enabling/Disabling Bridging for TSX-1620 PortsUsing the TSX-1620 Hub View Using the TSX-1620 Hub View Managing the Device Bridging Basics Using the TSX-1620 Bridge ViewSource Route Bridging Transparent BridgingSource Route Transparent Bridges Accessing the Bridge Traffic View WindowNavigating Through the Bridge Traffic View Click on in the Bridge Traffic View front panel Time and Date Bridge Traffic View Front PanelMAC Address Bridge Port Display MAC Port #Enabled Blocking Detail View Showing Two Ports Using the Detail View WindowBridge Status Window Bridge Statistics Window IfIndex DelayExceedDiscardBridging Type Total PortsMtuExceedDiscard Filtering Database WindowViewing the Filtering Database Status Ageing Time secsLearned Entry Discards Source AddressDestination Port Receive PortChanging the Filtering Database Dynamic Ageing Time Changing the Filtering Database Ageing Time Changing Forwarding and Static Database EntriesForward To Ports Static AddressFinding a Filtering Database MAC Address Spanning Tree Protocol WindowDeleting a Static Table Entry 11. Spanning Tree Protocol Window Num. Topology Chgs Forward DelaySpanning Tree Version Designated RootRoot Port Max AgeHello Time PriorityRoot Max Age Root Forward DelayRoot Hello Time Changing Spanning Tree Parameters Spanning Tree Port Parameters WindowPriority Port Designated Cost Path CostDesignated Port Source Routing Configuration WindowChanging a Port’s STA Parameters Designated BridgeHop Count InterfaceLargest Frame Local Segment NumberBridge Number Target Segment NumberChanging Source Routing Port Parameters STE Span Mode14. Pie Chart Window Creating Bridge Traffic Charts, Graphs and MetersConfiguring Forwarding Thresholds 15. Port Forwarding Thresholds Window Using the TSX-1620 Bridge View Viewing the Forwarding Log To clear all logs or just the current log 17. The Polling Intervals Window Changing Polling IntervalsBridge Port Display Info Enabling and Disabling PortsEnabling and Disabling a Transparent Bridge Port Device InfoEnabling and Disabling a Source Routing Bridge Port 18. Port Enable/Disable Source Routing WindowUsing the TSX-1620 Bridge View Index Index-2 Index-3 Index-4 Index-5 Index Index-6

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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