Enterasys Networks MicroMMAC-T manual Enabling and Disabling Port Mapping

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The MicroMMAC-T Chassis View

A software reset will now be performed for the MicroMMAC-T. All counters for the current MicroMMAC-T-managed ring return to their initial values, and the device will re-insert into the ring.

Enabling and Disabling Port Mapping

!

CAUTION

Port Mapping enables the MicroMMAC-T to determine if station address information can be matched to a specific module and port index. This ability is important during the Automatic Beacon Recovery Process, when the MicroMMAC-T needs to match address information contained in beacon frames with physical port locations so it can determine the “fault region” and locate failing ports.

When Port Mapping is enabled, the MicroMMAC-T can determine if a port is physically linked to the hub without being mapped as part of the ring network — that is, the device does not participate in neighbor notification. If a port in this condition is detected, the MicroMMAC-T will physically shut down the port to prevent ring problems. Port Mapping is enabled by default.

However, you may want to attach a device to the hub — such as a ring analyzer

—that does not participate in the normal operation of token ring protocol. In this case, you will want to disable Port Mapping for the port to which that device will be attached, to ensure that the MicroMMAC-T does not shut the port down.

If you wish to insert an analyzer on a ring, be sure you disable Port Mapping on the port you use for insertion; if you don’t, the MicroMMAC-T will detect that a station which is not participating in neighbor notification has been inserted, and will shut down the port. Also, be sure you do not insert anything other than an analyzer into a port whose mapping function has been disabled, since the MicroMMAC-T will not recognize the link status of that port, and will therefore not be able to map ports correctly (since it detects more stations than linked ports).

The Port Map window (Figure 2-15) allows you to view the current state of port mapping for the selected port, and allows you to either enable or disable port mapping for the port.

To enable or disable port mapping for a selected port:

1.Click on the desired Port index on a module display in the Chassis View window. The Port pull-down menu will appear.

2.Click on Port Map.... The Port Map window, Figure 2-15, will appear.

2-28	Managing the Hub

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Contents MicroMMAC-T Users Guide Page Virus Disclaimer Page Restricted Rights Notice Page Contents Contents Chapter Token Ring StatisticsChapter Station List and Station Map Chapter Token Ring AlarmsIndex Contents Viii Introduction Using This Guide IntroductionRelated Manuals Using the MouseSoftware Conventions Left Mouse Button Right Mouse Button Using Window Buttons Common MicroMMAC-T Window FieldsLocation Device NameIP Address MAC AddressGetting Help Using On-line HelpGetting Help from Enterasys Global Call Center Introduction MicroMMAC-T Chassis View Viewing Chassis Information Front Panel Information Time Menu StructureDate MicroMMAC-T Chassis View Menu Structure Device MenuPort Status Menu Network Menu Utilities MenuModule Menus Help MenuPort Menus Ring Port Menus Port Status DisplaysSelecting a Port Status View Load ErrorsStatus Ring Port Status Port AssignmentPort Status Color Codes Viewing Hardware Types Chassis Manager WindowClick on MIBs Supported Device Type Managing the HubModule Type Management Station Configuration Accessing the TR Management Station Configuration WindowSetting Station Name and Location Station Name Configuration WindowSpecifying Ring Management Functions Host Error Report Timer DelayEnable Beacon Recovery Inhibit Active MonitorEnable Ring Poll Recovery Viewing Network Information Selecting the RingNetwork Information Window Fields Token Ring Board Status Window Fields Ring of X Configured RingsViewing Module Status Board NumberAccessing the Ring Port Status window Viewing Ring Port StatusPort Last Wire FaultRing Port Status Window Fields Media TypeSetting the Device Date and Time Using the Media Type and Phantom Current Radio ButtonsUsing an Uninterruptable Power Supply UPS 13. Device Date Change Window Accessing the UPS Window 14. The UPS WindowUPS Uptime Battery OutputBattery Capacity Line VoltageUsing the Test Option Resetting the DeviceSetting the UPS ID Using the Disconnect OptionEnabling and Disabling Port Mapping Enabling and Disabling Link Traps 15. The Port Map WindowSetting Token Ring Boards to Automode Enabling and Disabling Link Traps at the Board LevelEnabling and Disabling Station Ports Enabling and Disabling PortsEnabling and Disabling Ring Ports Ring Out Enable/Disable Viewing I/F Summary InformationDescription IndexType Physical StatusInterface Performance Statistics/Bar Graphs Raw CountsRate Viewing Interface DetailAddress UnicastMaking Sense of Detail Statistics Transmitted Errors /Packets Transmitted Statistics Window Features Setting Total, Delta, or Cumulative CountsViewing Elapsed, Average, and Peak Activity Levels Token Ring StatisticsSetting the Statistics Poll Interval New Timer Interval Text BoxNetwork Statistics Window Accessing the Network Statistics SelectionsNetwork Level Statistics General Information FieldsStations Inserted Ring SpeedRing Status Fields Active MonitorSoft Error Fields Beacon StatisticsInternal Errors Burst ErrorsAbort Sequences Frequency Errors Congestion ErrorsToken Errors Lost FramesTotal Errors Network Timer StatisticsNetwork Timer Statistics Window Fields Frames Network Performance GraphsKBytes Network Events Red Configuring the Network Performance GraphNetwork Performance Graph Statistics Traffic BlueFrame Size Window Total and Delta Graph DisplayUsing the Pie and Bar Radio Buttons Frame Sizes Window with Pie ChartProtocol Statistics Window Accessing the Management Station Statistics Selection Management Station StatisticsSoft Errors Fields Hard Errors Fields FC ErrorsSoft Errors Signals LostHard Errors RecoveriesLobe Wire Fault Transmitted BeaconsPort Level Statistics Accessing the Station Port MenuStation Statistics Window Link Time Station Statistics Window General FieldsStation Name Station Statistics Window Performance FieldsStation Statistics Window Soft Error Fields Station Timer Statistics Window Station Timer Statistics Window Fields Port Performance GraphsTotal Errors Red Port Performance Graph StatisticsConfiguring the Port Performance Graph Token Ring Statistics Token Ring Alarms Ring-Level Alarm LimitsAccessing the Alarm Limits Window Ring-Level Alarm Limits for Network EventsRing-Level Station Alarms Token ErrorsSetting Ring-Level Alarm Limits LineStation-Level Alarm Limits Accessing the Station Alarm Limits Window from the Port MenuToken Ring Alarms Setting Station-Level Alarm Limits Station Alarm Limits WindowToken Ring Alarms Station List and Station Map Station List WindowGeneral Fields Address ModeStation List Window Fields Number of Nodes/StationsViewing Station Statistics Station FieldsSetting Station Alarms Viewing Station Timer StatisticsRemoving a Station from the Ring Viewing the Station Port Performance Graph Using the MAC/Canonical ButtonPrinting the Station List Resetting Counters Station MapStation Map Window Fields Number of NodesViewing the Station Map Station Pop-up Text BoxesStation Map with Text Boxes Node AddressStation Command Menu Manipulating the Station Map Magnifying a Portion of the MapRotating the Station Map Resizing the Station Map Window Station List and Station Map Symbols IndexIndex-2 Index-3 Index-4