Cabletron Systems CSX200 Path Cost, Designated Cost, Designated Root, Designated Bridge, Topology

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Bridging

A lower assigned value gives the port a higher Priority when BPDUs are compared. The allowable range is 0ÑFF hexadecimal (0Ñ255 decimal); the default is 80 hexadecimal.

Path Cost

Displays the cost that this port will contribute to the calculation of the overall Root path cost in a ConÞguration BPDU transmitted by this bridge port. You can lower a portÕs Path Cost to make the port more competitive in the selection of the Designated PortÑfor example, you may want to assign a lower path cost to a port on a higher performance bridge. The allowable range is 1 to 65,535.

Designated Cost

Displays the cost of the path to the Root Bridge of the Designated Port on the LAN to which this port is attached. This cost is added to the Path Cost to test the value of the Root Path Cost parameter received in ConÞguration BPDUs.

Designated Root

Displays the unique bridge identiÞer of the bridge that is assumed to be the Root Bridge.

Designated Bridge

Displays the network address portion of the Bridge ID (MAC address/priority component) for the bridge that is believed to be the Designated Bridge for the LAN associated with this port.

The Designated Bridge ID, along with the Designated Port and Port IdentiÞer parameters for the port, is used to determine whether this port should be the Designated Port for the LAN to which it is attached. The Designated Bridge ID is also used to test the value of the Bridge IdentiÞer parameter in received BPDUs.

Designated Port

Displays the network address portion of the Port ID (which includes a manageable priority component) of the port believed to be the Designated Port for the LAN associated with this port.

The Designated Port ID, along with the Designated Bridge and Port IdentiÞer parameters for the port, is used to determine whether this port should be the Designated Port for the LAN to which it is attached. Management also uses it to determine the Bridged LAN topology.

Topology

This indicates how many times the bridgeÕs Topology Change ßag has been changed since the device was last powered up or initialized. It also indicates the time elapsed since the topology last changed. The Topology Change ßag increments each time a bridge enters or leaves the network, or when the Root Bridge ID changes.

Bridge Spanning Tree

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Contents CSX200 and CSX400 User’s Guide Page Virus Disclaimer Page Restricted Rights Notice Page Contents Chapter Bridging Vii Token Ring Physical Status Fields IndexIntroduction HSIM-W6 and HSIM-W84 Using the CSX 200 and CSX400 User’s GuideRelated Manuals Common Window Fields Software ConventionsDevice Name IP Address Using the MouseLocation MAC AddressUsing Window Buttons Getting Help Using On-line HelpGetting Help from the Cabletron Systems Global Call Center CSX200 and CSX400 Firmware CSX200 and 400 Chassis View CSX200 and CSX400 Chassis View Windows Viewing Chassis InformationFront Panel Information Time Menu StructureDate Port Status Menu Device MenuHelp Menu Utilities MenuPort Menus Selecting a Port Status View CSX200/400 Port Status DisplaysStatus Load Port Status Color Codes Chassis Manager WindowDevice Type Viewing Hardware TypesViewing the Port Description Managing the DeviceViewing I/F Summary Information Using the Find Source Address FeatureDescription IndexLogical Status Physical StatusInterface Performance Statistics/Bar Graphs Raw CountsRate Detail Interface Statistics Viewing Interface DetailAddress ErrorUnicast Non-UnicastPackets Transmitted Transmit only Enabling and Disabling PortsMaking Sense of Detail Statistics CSX200 and 400 Chassis View CSX200 and 400 Chassis View Managing the Device About the CSX200 Series CSX200 and CSX400 WAN ConfigurationWAN Redundancy About the CSX400WPIM-DDS CSX WPIMsEIA-RS449 WAN Logical View Window WAN Logical ViewWAN Logical View Window Fields Changing WAN Logical SettingsCSX200 and CSX400 WAN Configuration CSX200 and CSX400 WAN Configuration WAN Logical View Bridging Basics BridgingAbout Source Route Bridging About Transparent BridgingBridging About Source Route-Translational Bridges About Source Route-Transparent BridgesBridging Viewing and Managing Bridging Interfaces Bridging Bridge Status Window Information Fields Bridge Status WindowBridge State on Interface Up TimeInterface Type Accessing Other Options from the Bridge Status WindowBridge Address Bridging Bridging Bridging Enabling and Disabling Individual Interfaces Enabling and Disabling BridgingFrom the Bridge Status window Bridge Statistics Enabling and Disabling All Installed InterfacesPerformance Graphs From the Chassis View windowFrom the Bridge Status window Frames Forwarded Green Bridge Performance Graph Window FieldsFiltered Magenta Xmitted Blue Errors RedConfiguring the Bridge Performance Graphs Bridge Detail Breakdown WindowFiltered Frames ForwardedBridge Port Detail Breakdown Window XmittedForwarded to Forwarded fromI/F Statistics Window Interface Statistics WindowStatistics Window Fields Unknown Protocol Csmacd Statistics WindowPackets Received Transmit Queue SizeAlignment Receive ErrorsTransmission Errors PPP Link Statistics Window Collision ErrorsBad Addresses ErrorsBad Controls Packets Too LongStatistics Dot5 Errors Statistics Window Burst Errors Line ErrorsCongestion Errors Internal ErrorsToken Errors Soft ErrorsSource Route Statistics Received Frames Bridge Source Routing Window FieldsSpecif. Routed All Paths ExplDiscards Transmitted FramesHop Cnt. Exceeded Bridge Spanning TreeBridge Level Fields Configuring the Bridge Spanning Tree WindowBridge Priority Root Cost Root BridgeRoot Port Bridge Port Level Fields Designated Cost Path CostDesignated Root Designated BridgeChanging Bridge Priority Changing Bridge Spanning Tree ParametersChanging the Spanning Tree Algorithm Protocol Type Changing Hello Time Changing Forwarding Delay TimeChanging Max Age Time Changing Port Priority Filtering DatabaseChanging Path Cost Bridging From the Bridge Status window List Filtering Database Window FieldsNumber CapacityAging Time Configuring the Filtering DatabaseSource Port Receive PortChanging the Type of Entry Altering the Aging TimeChanging the Port Filtering Action Changing the Receive PortAdding or Deleting Individual Entries Clearing All Permanent, Static, or Dynamic Entries Ethernet and Token Ring Special Filter DatabasesEthernet Special Filter Database Window 13. Ethernet Special Filter Database Window Token Ring Special Filter Database WindowSpecial Filter Database Window Fields EnableFile Destination AddressDefining and Editing Filters in the Special Database This Changing the Receive Ports Setting the Port Filtering ActionChanging the Port Filtering Action Saving a Set of Filters to a File Enabling and Disabling a FilterClearing the Port Filtering Action Source Route Configuration 16. Source Route ConÞguration Window Information on Source RoutingSource Route Configuration Fields Source Route Configuration WindowLocal Segment Subnet MaskTarget Segment Hop Count LimitBridge Number Spanning Tree ExplSpanning Tree Mode Making and Setting Changes Using the Find Source Address FeaturePort Source Addresses Window Setting the Aging Time Duplex Modes Duplex Modes Window Fields Duplex Modes WindowInterface Full Duplex Setting the Duplex ModeEthernet Port Configuration Window Standard ModeFast Ethernet Port Configuration Port Type Current Operational ModeLink State Advertised Abilities Desired Operational ModeRemote Capabilities Setting the Desired Operational Mode for the FE-100FX Setting the Desired Operational Mode for the FE-100TXSONET/SDH Configuration Sonet Port ConfigurationSonet SONET/SDH Statistics Window Bridging 24. The SONET/SDH Statistics Window Loss of Pointer Loss of SignalLoss of Frame Errored SecondsSeverely Errored Framing Seconds Severely Errored SecondsCode Violations Configuring Broadcast Suppression Token Ring Bridge Mode Defining the Bridge Modes Setting The Token Ring Bridge ModeTransparent Source RoutingEtwmim Ethernet Port Physical View Using the Physical View WindowsEthernet Port Physical Status Fields Active PortEpim Type Etwmim Token Ring Port Physical ViewRing Speed Token Ring Physical Status FieldsRing State Active Monitor FNB StateUsing the Interface Configuration Window 29. Interface ConÞguration Window Defining the Bridge MethodNetBIOS Setting the Bridge MethodDefining the Protocol Transmission OtherUsing the Bridge and Port Configuration Windows From the Bridge Status window Ring Number Virtual Ring NumberNovell Translation Port ModeBridge Mode/Explorer Type Configuring SmartTrunking Name PortSmartTrunk State ModeInstance # SmartTrunksBridging Bridging 100 Configuring SmartTrunking Index Index-2 Index-3 Index-4
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CSX200, CSX400 specifications

Cabletron Systems was a leading developer of networking solutions, and its CSX400 and CSX200 series of high-performance switches represent some of the key innovations in the field of enterprise networking during their time. Both models were geared towards enhancing network reliability, efficiency, and speed, particularly in environments where heavy data traffic and complex networking demands were prevalent.

The CSX400, designed for larger enterprises, boasts a robust architecture capable of handling significant throughput. One of its standout features is its stackable design, allowing multiple switches to be interconnected and managed seamlessly as a single unit. This scalability provides organizations with the flexibility to expand their networks without significant infrastructure overhauls. The CSX400 supports various Ethernet standards, including 10/100 Ethernet and Gigabit Ethernet, positioning it to effectively manage both legacy and modern networking requirements.

In addition to its scalability, the CSX400 is distinguished by its advanced Layer 2 and Layer 3 routing capabilities. This dual-layer functionality enables efficient data handling and is instrumental in managing traffic between different network segments. Moreover, the switch incorporates features like VLAN (Virtual Local Area Network) support and Quality of Service (QoS) prioritization, allowing for enhanced performance of critical applications and streamlined bandwidth allocation.

On the other hand, the CSX200 series is tailored for smaller enterprises or branch offices needing a reliable yet efficient networking solution. Despite its compact design, the CSX200 is equipped with essential features that promote effective network management and security. It offers a simplified management interface, making it user-friendly for network administrators. The switch also provides essential access control measures, employing technologies like IEEE 802.1X for network access security.

Both the CSX400 and CSX200 prioritize performance through the incorporation of advanced switching technologies. They support features such as Spanning Tree Protocol (STP), enabling loop-free topologies and enhanced network resilience. These attributes are particularly crucial in dynamic networking environments where downtime can have significant repercussions on business operations.

Overall, Cabletron Systems' CSX400 and CSX200 series represent a blend of scalability, advanced routing capabilities, and user-friendly management, making them vital assets for organizations looking to optimize their network infrastructure during a period of rapid technological evolution. With their rich feature sets and unwavering performance, these switches helped pave the way for modern networking solutions that cater to diverse enterprise needs.
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