Cabletron Systems 9A128-01 manual Address, Non-Unicast, Discarded, Error

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The 9A128-01 Module View

Three informational ﬁelds appear in the upper portion of the window:

Description

Displays the interface description for the currently selected port: Ctron SMB 1, Ctron SMB 10, FDDI, or ATM.

Address

Displays the MAC (physical) address of the selected port.

Type

Displays the interface type of the selected port: sdlc (for SMB 1), ethernet-csmacd (for SMB 2), fddi, or atm.

The lower portion of the window provides the following transmit and receive statistics; note that the ﬁrst four statistics are also graphically displayed in the pie charts.

Unicast

Displays the number of packets transmitted to or received from this interface that had a single, unique destination address. These statistics are displayed in the pie chart, color-coded green.

Non-Unicast

Displays the number of packets transmitted to or received from this interface that had a destination address that is recognized by more than one device on the network segment. The non-unicast ﬁeld includes a count of broadcast packets — those that are recognized by all devices on a segment. These statistics are displayed in the pie chart, color-coded dark blue.

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 you network to add additional bridges or switches. 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.

2-18	Viewing Module Information

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Contents Cabletron Systems Virus Disclaimer Page Restricted Rights Notice Page Contents Chapter Bridging Chapter Fddi ManagementIndex Introduction Using This GuideRelated Reading IP Address Software ConventionsCommon Window Fields Device NameLocation Using ButtonsUsing On-line Help Getting HelpFTP Getting Help from the Cabletron Systems Global Call CenterFirmware Versions Supported 9A128-01 Module View Front Panel Information Viewing Module InformationPort Status Boot PromConnection Status UpTimeTime Menu StructureDate Device Menu A128-01 Module View Menu StructurePort Status Menu Board Menus Fddi MenuUtilities Menu Help MenuPort Menus Port Status DisplaysBridge Port Status Displays Selecting a Port Status ViewFddi Port Status Displays Bridge Port StateBridge Mapping Bridge Port Status Color CodesLER Estimate Connection StateFddi Port Status Color Codes Chassis Manager WindowDevice Type Viewing Hardware TypesModule Type Module Type Window Viewing I/F Summary InformationInterface Performance Statistics/Bar Graphs IndexDescription StaLoad Raw CountsInterface Statistics Window RateNon-Unicast ErrorAddress UnicastPackets Transmitted Transmit only Using the Find Source Address FeaturePackets Received Received only Transmit Queue Size 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 Req. Requested Target Token Rotation Time SMT VersionNeg. Negotiated MAC Path Concentrator M PortsConcentrator Non-M Ports Number of MACsConnection Policy 15 32,768 a permanently set value for this bit Station List Address ModeNumber of Nodes Upstream Neighbor Stations PanelNode Class TopologyPerformance Lost Frames Frame ErrorsTransmit Frames Receive FramesFddi Management Performance Bridging Bridging Bridge Status WindowBridge Address Up TimeBridge State on Interface Interface TypeConﬁguring Duplex Modes Enabling and Disabling Bridging Performance Graphs Bridge StatisticsForwarded Green Conﬁguring the Bridge Performance Graphs Total Errors RedFiltered Magenta Xmitted BlueXmitted ErrorsForwarded FilteredForwarded to Interface Statistics WindowForwarded from Description Using Source Addressing Port Source Addresses Window Setting the Ageing TimeBridge Spanning Tree Bridge Priority Conﬁguring the Bridge Spanning Tree WindowProtocol Root BridgeRoot Cost Root PortHold Time Forwarding DelayHello Time Max AgeChanging Bridge Spanning Tree Parameters Changing the Spanning Tree Algorithm Protocol Type Changing Bridge PriorityChanging Hello Time Changing Max Age Time Changing Forwarding Delay TimeChanging Port Priority Changing Path Cost Filtering DatabaseBridging Bridging Ageing Time ListNumber CapacityReceive Port Conﬁguring the Filtering DatabasePort Filtering Changing the Port Filtering Action Altering the Ageing TimeChanging the Type of Entry Changing the Receive PortClearing All Permanent, Static, or Dynamic Entries Bridging Filtering Database Index Index-2 Index-3 Index Index-4