Unknown Protocol Received only | Enterasys Networks IRM2 instruction

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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Enterasys Networks IRM2 Unknown Protocol Received only, Packets Received Received only, Transmit Queue Size Transmit only

Contents

IRM2 Users Guide Page Virus Disclaimer Page Restricted Rights Notice Page Contents Statistics Chapter Trap Selection Index Chapter Redundancy Contents Viii Introduction Using This Manual Introduction Related Manuals Software Conventions Using the Mouse Device Name Common IRM2 Window Fields Using Window Buttons Getting Help Using On-line Help Hours a day, 365 days a year Getting Help from the Enterasys Global Call Center Introduction Getting Help IRM2 Chassis View Viewing Chassis Information Port Locking/Unlocking Front Panel InformationConnection Status Port Status Menu Structure Boot PromFirmware Time Device Menu IRM2 Chassis View Menu Structure Repeater Menu View MenuPort Status Menu Board Menu Utilities MenuHelp Menu Load MIM Port Status DisplaysPort Menus Status Port Type Errors Port Status Color Codes Physical Chassis View Chassis Manager Window Device Type Viewing Hardware Types Managing the Hub Setting the Device Date and Time Restarting the Device Resetting Device Counters Repeater Port Association Configuring the Front Panel Repeater Port Association Enabling Boards Setting a Board Name Viewing I/F Summary Information Enabling and Disabling Ports Type IndexDescription Physical Status Raw Counts Viewing Interface Detail Rate Address ErrorUnicast Non-Unicast Packets Received Received only Unknown Protocol Received onlyTransmit Queue Size Transmit only Packets Transmitted Transmit only Using the Applications menu Testing and Disabling the Current Interface Statistics Statistics Statistics Accessing the Statistics Windows Packets Statistics DefinedBytes Hard Errors Using the Total and Delta Radio ButtonsSoft Errors Collisions Accessing the Timer Statistics Windows Timer Statistics To access the port-level Timer Statistics window Summary Statistics Setting the Timer Statistics Interval Accessing the Summary Statistics Windows Configuring Summary Statistics Performance Graph Accessing the Performance Graph Windows Total Errors Configuring the Performance Graph Find Source Address Source Address Functions Source Address Functions Using Port Locking and Unlocking Lock/Unlock Ports Window Using Source Addressing Setting the Device Ageing Time Device Ageing Time Window Accessing the Alarm Limits Windows Alarm Limits Accessing the Alarm Limits Windows Alarm Limits Collisions Broadcast Packets Errors of Type Within Configuring AlarmsSetting the Alarm Limits Time Interval Alarm Interval Window Setting Alarm Limits Alarm Limits Trap Selection Accessing the Trap Selection Windows Link State Traps Trap Definitions Source Address Traps Segmentation Traps Configuring Traps Redundancy Accessing the Redundancy Window Redundancy Selecting and Naming a Circuit Establishing Redundancy Circuit Name Window Entering the Physical Addresses of Devices to be Polled Assigning Backup Ports and Port Priority to the Circuit Polling Interval Window Setting the Polling Interval and Number of Retries Activating the Circuit Testing the Circuits Test Time of Day Window Reconfiguring a Circuit Changing Port Status Redundancy Reset Warning Window Resetting a Circuit Redundancy Index Index-2 Index-3 Index Index-4