Enterasys Networks IRM2 manual Unknown Protocol Received only, Packets Received Received only

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The IRM2 Chassis View

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 9H42x-xx module will begin to discard packets.

Packets Transmitted (Transmit only)

Displays the number of packets received by the selected interface.

Making Sense of Detail Statistics

The statistics available in this window can give you an idea of how an interface is performing; by using the statistics in a few simple calculations, it’s also possible to get a sense of an interface’s activity level:

To calculate the percentage of input errors:

Received Errors /Packets Received

To calculate the percentage of output errors:

Transmitted Errors /Packets Transmitted

To calculate the total number of inbound and outbound discards:

Received Discards + Transmitted Discards

To calculate the percentage of inbound packets that were discarded:

Received Discards /Packets Received

To calculate the percentage of outbound packets that were discarded:

Transmit Discards /Packets Transmitted

NOTE

Unlike the Interface Detail window, which this window replaces, the Interface Statistics window does not offer Disable or Test options. These options are available in the Interface Group window, which can be accessed via the System Group window (select System Group... from the Device menu). Refer to your Generic SNMP User’s Guide for further information on the System Group and Interface Group windows.

Managing the Hub

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Contents IRM2 Users Guide Page Virus Disclaimer Page Restricted Rights Notice Page Contents Statistics Chapter Trap SelectionIndex Chapter RedundancyContents Viii Introduction Using This ManualIntroduction Related ManualsSoftware Conventions Using the MouseDevice Name Common IRM2 Window FieldsUsing Window Buttons Getting Help Using On-line HelpHours a day, 365 days a year Getting Help from the Enterasys Global Call CenterIntroduction Getting Help IRM2 Chassis View Viewing Chassis Information Port Locking/Unlocking Front Panel InformationConnection Status Port StatusMenu Structure Boot PromFirmware TimeDevice Menu IRM2 Chassis View Menu StructureRepeater Menu View MenuPort Status Menu Board Menu Utilities MenuHelp Menu Load MIM Port Status DisplaysPort Menus Status Port TypeErrors Port Status Color Codes Physical Chassis ViewChassis Manager Window Device Type Viewing Hardware TypesManaging the Hub Setting the Device Date and TimeRestarting the Device Resetting Device CountersRepeater Port Association Configuring the Front Panel Repeater Port AssociationEnabling Boards Setting a Board NameViewing I/F Summary Information Enabling and Disabling PortsType IndexDescription Physical StatusRaw Counts Viewing Interface Detail RateAddress ErrorUnicast Non-UnicastPackets Received Received only Unknown Protocol Received onlyTransmit Queue Size Transmit only Packets Transmitted Transmit onlyUsing the Applications menu Testing and Disabling the Current InterfaceStatistics StatisticsStatistics Accessing the Statistics WindowsPackets Statistics DefinedBytes Hard Errors Using the Total and Delta Radio ButtonsSoft Errors CollisionsAccessing the Timer Statistics Windows Timer StatisticsTo access the port-level Timer Statistics window Summary Statistics Setting the Timer Statistics IntervalAccessing the Summary Statistics Windows Configuring Summary Statistics Performance Graph Accessing the Performance Graph WindowsTotal Errors Configuring the Performance Graph Find Source Address Source Address FunctionsSource Address Functions Using Port Locking and UnlockingLock/Unlock Ports Window Using Source Addressing Setting the Device Ageing Time Device Ageing Time Window Accessing the Alarm Limits Windows Alarm LimitsAccessing the Alarm Limits Windows Alarm Limits Collisions Broadcast Packets Errors of TypeWithin Configuring AlarmsSetting the Alarm Limits Time Interval Alarm Interval Window Setting Alarm LimitsAlarm Limits Trap Selection Accessing the Trap Selection WindowsLink State Traps Trap DefinitionsSource Address Traps Segmentation TrapsConfiguring Traps Redundancy Accessing the Redundancy WindowRedundancy Selecting and Naming a Circuit Establishing RedundancyCircuit Name Window Entering the Physical Addresses of Devices to be PolledAssigning Backup Ports and Port Priority to the Circuit Polling Interval Window Setting the Polling Interval and Number of RetriesActivating the Circuit Testing the Circuits Test Time of Day Window Reconfiguring a CircuitChanging Port Status Redundancy Reset Warning Window Resetting a CircuitRedundancy Index Index-2 Index-3 Index Index-4