Cabletron Systems 9A128-01 manual Bridging

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Chapter 5

Bridging

Bridge management overview; the Bridge Status window; enabling and disabling bridging; Bridge Performance Graphs; bridge detail breakdown; the Bridge Spanning Tree window; changing bridge Spanning Tree parameters; the Filtering Database window; conﬁguring the ﬁltering database

With SPECTRUM Element Manager’s Bridge Status window, you can view and manage each bridging interface supported by the 9A128-01. You manage your bridge by using the following windows:

•The Bridge Status window provides you with basic information about the current status of each available bridging interface, and allows you to enable or disable bridging at each interface. The Bridge Status window also provides access to additional windows which allow you to conﬁgure bridging parameters.

•The bridge-level Duplex Modes option allows you to set Duplex Mode operation for the FDDI interface; although the window is available, duplex mode operation is not currently supported for the 9A128-01.

•The Performance Graph and Interface Statistics windows graphically display the trafﬁc passing between your bridged networks, and let you compare and contrast trafﬁc processed by each interface; the Source Addressing window lists the MAC addresses of devices communicating through each interface.

•The Spanning Tree window shows bridge port information and protocol parameters relating to the Spanning Tree Algorithm (the method of determining the controlling bridge when a series of bridges are placed in parallel).

•With the Filtering Database window, you can see the contents of the Static and Learned databases – the two address databases which construct the IEEE 802.1 Source Address Table. The bridge uses the contents of these databases to make its packet ﬁltering and forwarding decisions. You can conﬁgure entries in these databases to increase bridging efﬁciency across your network.

The following sections detail how to use each of the bridge management windows.

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Contents Cabletron Systems Virus Disclaimer Page Restricted Rights Notice Page Contents Chapter Fddi Management Chapter BridgingIndex Using This Guide IntroductionRelated Reading Device Name Software ConventionsCommon Window Fields IP AddressGetting Help Using ButtonsUsing On-line Help LocationGetting Help from the Cabletron Systems Global Call Center FTPFirmware Versions Supported 9A128-01 Module View Viewing Module Information Front Panel InformationUpTime Boot PromConnection Status Port StatusMenu Structure TimeDate A128-01 Module View Menu Structure Device MenuPort Status Menu Help Menu Fddi MenuUtilities Menu Board MenusPort Status Displays Port MenusSelecting a Port Status View Bridge Port Status DisplaysBridge Port Status Color Codes Bridge Port StateBridge Mapping Fddi Port Status DisplaysConnection State LER EstimateChassis Manager Window Fddi Port Status Color CodesViewing Hardware Types Device TypeModule Type Viewing I/F Summary Information Module Type WindowSta IndexDescription Interface Performance Statistics/Bar GraphsRaw Counts LoadRate Interface Statistics WindowUnicast ErrorAddress Non-UnicastTransmit Queue Size Transmit only Using the Find Source Address FeaturePackets Received Received 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 SMT Version Req. Requested Target Token Rotation TimeNeg. Negotiated Number of MACs Concentrator M PortsConcentrator Non-M Ports MAC PathConnection Policy 15 32,768 a permanently set value for this bit Address Mode Station ListNumber of Nodes Topology Stations PanelNode Class Upstream NeighborPerformance Receive Frames Frame ErrorsTransmit Frames Lost FramesFddi Management Performance Bridging Bridge Status Window BridgingInterface Type Up TimeBridge State on Interface Bridge AddressConﬁguring Duplex Modes Enabling and Disabling Bridging Bridge Statistics Performance GraphsForwarded Green Xmitted Blue Total Errors RedFiltered Magenta Conﬁguring the Bridge Performance GraphsFiltered ErrorsForwarded XmittedInterface Statistics Window Forwarded toForwarded from Description Using Source Addressing Setting the Ageing Time Port Source Addresses WindowBridge Spanning Tree Conﬁguring the Bridge Spanning Tree Window Bridge PriorityRoot Port Root BridgeRoot Cost ProtocolMax Age Forwarding DelayHello Time Hold TimeChanging Bridge Spanning Tree Parameters Changing Bridge Priority Changing the Spanning Tree Algorithm Protocol TypeChanging Hello Time Changing Forwarding Delay Time Changing Max Age TimeChanging Port Priority Filtering Database Changing Path CostBridging Bridging Capacity ListNumber Ageing TimeConﬁguring the Filtering Database Receive PortPort Filtering Changing the Receive Port Altering the Ageing TimeChanging the Type of Entry Changing the Port Filtering ActionClearing All Permanent, Static, or Dynamic Entries Bridging Filtering Database Index Index-2 Index-3 Index Index-4