Cabletron Systems 9A128-01 Up Time, Bridge State on Interface, Interface Type, Bridge Address

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Bridging

Up Time

At the top of the Bridge Status window, you can see the time period (in a days, hh:mm:ss format) that has elapsed since the selected module was last reset or initialized.

Bridge State on Interface

Indicates the state of bridging over the port interface. Note that this state (and its corresponding color-code) will also be reﬂected on the bridge port display in the Module View window. Possible bridge states and their corresponding colors are:

•Forwarding (green) – the port is on line, and is configured by Spanning Tree Algorithm to forward frames to and from its attached network.

•Disabled (blue) – bridging at the port has been disabled by management; no traffic can be received or forwarded, including configuration information for the bridged topology.

•Listening (magenta) – this bridge port is not adding information to the Filtering Database. The port is monitoring Bridge Protocol Data Unit (BPDU) traffic while preparing to move to the Forwarding state.

•Learning (magenta) – the Forwarding database is being created or the Spanning Tree Algorithm is being executed due to a network topology change; the port is monitoring network traffic, learning network addresses.

•Blocking (orange) – Spanning Tree Algorithm has conﬁgured this port to block (ﬁlter) frames to prevent redundant data loops in the bridged network; the port can’t receive or forward trafﬁc, but bridge topology information will be forwarded.

•Broken (red) — the physical interface has malfunctioned.

Interface Type

Indicates the interface type which applies to each bridge port interface (fddi, atm, or other for the INB). The interface type (ifType) is a mandatory object type from the SNMP MIB-II Interface (IF) Group.

Bridge Address

Indicates the physical (MAC) address of the bridge port.

Speed

Indicates the theoretical maximum speed of the selected interface in kilobytes per second: 2500 Mbits for the INB interface; 100 Mbits for FDDI; and 155 Mbits for ATM.

Accessing Other Management Options from the

Bridge Status Window

At the top of the Bridge Status window, you can click on to access a menu that provides other bridge management options:

The Bridge Status Window

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Contents Cabletron Systems Virus Disclaimer Page Restricted Rights Notice Page Contents Index Chapter Fddi ManagementChapter Bridging Using This Guide IntroductionRelated Reading Software Conventions Common Window FieldsDevice Name IP AddressUsing Buttons Using On-line HelpGetting Help LocationGetting Help from the Cabletron Systems Global Call Center FTPFirmware Versions Supported 9A128-01 Module View Viewing Module Information Front Panel InformationBoot Prom Connection StatusUpTime Port StatusDate Menu StructureTime A128-01 Module View Menu Structure Device MenuPort Status Menu Fddi Menu Utilities MenuHelp Menu Board MenusPort Status Displays Port MenusSelecting a Port Status View Bridge Port Status DisplaysBridge Port State Bridge MappingBridge Port Status Color Codes Fddi Port Status DisplaysConnection State LER EstimateChassis Manager Window Fddi Port Status Color CodesModule Type Viewing Hardware TypesDevice Type Viewing I/F Summary Information Module Type WindowIndex DescriptionSta Interface Performance Statistics/Bar GraphsRaw Counts LoadRate Interface Statistics WindowError AddressUnicast Non-UnicastUsing the Find Source Address Feature Packets Received Received onlyTransmit Queue Size Transmit only Packets Transmitted Transmit onlySetting the Device Date and Time Managing the HubEnabling and Disabling Ports Bridge PortsModule Ports Accessing the ATM Connections Window ATM ConﬁgurationATM Conﬁguration Connection DataSettings VPIConﬁguring Connections Adding a New ConnectionDeleting a Connection ATM Conﬁguration Conﬁguring Connections Fddi Management Conﬁguration Fddi ManagementMAC State Neg. Negotiated SMT VersionReq. Requested Target Token Rotation Time Concentrator M Ports Concentrator Non-M PortsNumber of MACs MAC PathConnection Policy 15 32,768 a permanently set value for this bit Number of Nodes Address ModeStation List Stations Panel Node ClassTopology Upstream NeighborPerformance Frame Errors Transmit FramesReceive Frames Lost FramesFddi Management Performance Bridging Bridge Status Window BridgingUp Time Bridge State on InterfaceInterface Type Bridge AddressConﬁguring Duplex Modes Enabling and Disabling Bridging Bridge Statistics Performance GraphsForwarded Green Total Errors Red Filtered MagentaXmitted Blue Conﬁguring the Bridge Performance GraphsErrors ForwardedFiltered XmittedForwarded from Interface Statistics WindowForwarded to Description Using Source Addressing Setting the Ageing Time Port Source Addresses WindowBridge Spanning Tree Conﬁguring the Bridge Spanning Tree Window Bridge PriorityRoot Bridge Root CostRoot Port ProtocolForwarding Delay Hello TimeMax Age Hold TimeChanging Bridge Spanning Tree Parameters Changing Hello Time Changing Bridge PriorityChanging the Spanning Tree Algorithm Protocol Type Changing Port Priority Changing Forwarding Delay TimeChanging Max Age Time Filtering Database Changing Path CostBridging Bridging List NumberCapacity Ageing TimePort Filtering Conﬁguring the Filtering DatabaseReceive Port Altering the Ageing Time Changing the Type of EntryChanging the Receive Port Changing the Port Filtering ActionClearing All Permanent, Static, or Dynamic Entries Bridging Filtering Database Index Index-2 Index-3 Index Index-4