Cabletron Systems 9A128-01 manual Using Source Addressing, Discarded

Page 65

Bridging

Discarded

Displays the number of packets which were discarded even though they contained no errors that would prevent transmission. Good packets are typically discarded to free up buffer space when the network becomes very busy; if this is occurring routinely, it usually means that network trafﬁc is overwhelming the device. To solve this problem, you may need to re-conﬁgure your bridging parameters, or perhaps re-conﬁgure your network to add additional bridges. Consult the Cabletron Systems Network Troubleshooting Guide for more information.

These statistics are displayed in the pie chart, color-coded magenta.

Error

Displays the number of packets received or transmitted that contained errors. These statistics are displayed in the pie chart, color-coded red.

Unknown Protocol (Received only)

Displays the number of packets received which were discarded because they were created under an unknown or unsupported protocol.

Packets Received (Received only)

Displays the number of packets received by the selected interface.

Transmit Queue Size (Transmit only)

Displays the number of packets currently queued for transmission from this interface. The amount of device memory devoted to buffer space, and the trafﬁc level on the target network, determine how large the output packet queue can grow before the 9A128-01 will begin to discard packets.

Packets Transmitted (Transmit only)

Displays the number of packets transmitted by this interface.

Using Source Addressing

You can use the Port Source Addresses window to view the MAC addresses that are communicating through a selected bridge interface.

To open the Source Addresses window from the Bridge Status window:

1.Click on the individual index ( ) of the bridge interface of interest. The port menu will appear.

2.Select Source Addressing.... The Source Addresses window, Figure 5-7, will appear.

5-12	Using Source Addressing

Image 65

Contents Cabletron Systems Virus Disclaimer Page Restricted Rights Notice Page Contents Index Chapter Fddi ManagementChapter Bridging Introduction Using This GuideRelated Reading Common Window Fields Software ConventionsDevice Name IP AddressUsing On-line Help Using ButtonsGetting Help LocationFTP Getting Help from the Cabletron Systems Global Call CenterFirmware Versions Supported 9A128-01 Module View Front Panel Information Viewing Module InformationConnection Status Boot PromUpTime Port StatusDate Menu StructureTime Device Menu A128-01 Module View Menu StructurePort Status Menu Utilities Menu Fddi MenuHelp Menu Board MenusPort Menus Port Status DisplaysBridge Port Status Displays Selecting a Port Status ViewBridge Mapping Bridge Port StateBridge Port Status Color Codes Fddi Port Status DisplaysLER Estimate Connection StateFddi Port Status Color Codes Chassis Manager WindowModule Type Viewing Hardware TypesDevice Type Module Type Window Viewing I/F Summary InformationDescription IndexSta Interface Performance Statistics/Bar GraphsLoad Raw CountsInterface Statistics Window RateAddress ErrorUnicast Non-UnicastPackets Received Received only Using the Find Source Address FeatureTransmit Queue Size Transmit only Packets Transmitted Transmit onlyManaging the Hub Setting the Device Date and TimeBridge Ports Enabling and Disabling PortsModule Ports ATM Conﬁguration Accessing the ATM Connections WindowConnection Data ATM ConﬁgurationVPI SettingsAdding a New Connection Conﬁguring ConnectionsDeleting a Connection ATM Conﬁguration Conﬁguring Connections Fddi Management Fddi Management ConﬁgurationMAC State Neg. Negotiated SMT VersionReq. Requested Target Token Rotation Time Concentrator Non-M Ports Concentrator M PortsNumber of MACs MAC PathConnection Policy 15 32,768 a permanently set value for this bit Number of Nodes Address ModeStation List Node Class Stations PanelTopology Upstream NeighborPerformance Transmit Frames Frame ErrorsReceive Frames Lost FramesFddi Management Performance Bridging Bridging Bridge Status WindowBridge State on Interface Up TimeInterface Type Bridge AddressConﬁguring Duplex Modes Enabling and Disabling Bridging Performance Graphs Bridge StatisticsForwarded Green Filtered Magenta Total Errors RedXmitted Blue Conﬁguring the Bridge Performance GraphsForwarded ErrorsFiltered XmittedForwarded from Interface Statistics WindowForwarded to Description Using Source Addressing Port Source Addresses Window Setting the Ageing TimeBridge Spanning Tree Bridge Priority Conﬁguring the Bridge Spanning Tree WindowRoot Cost Root BridgeRoot Port ProtocolHello Time Forwarding DelayMax 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 Changing Path Cost Filtering DatabaseBridging Bridging Number ListCapacity Ageing TimePort Filtering Conﬁguring the Filtering DatabaseReceive Port Changing the Type of Entry Altering the Ageing TimeChanging 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