Cabletron Systems TRMMIM manual Frames or Errors measured/Δ Time in seconds

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Ring Map

NOTE

The statistics used to rank stations in highest—>lowest or lowest—>highest occurrence of a particular parameter are measured at the end of the speciﬁed polling interval and are displayed according to the selected calculation mode. Remember, the calculation mode is global in nature; that is, when you change modes, it affects all statistics — including those used to rank stations in highest or lowest order.

When Rate is the selected mode, Find by Highest or Lowest detects the station with the greatest or smallest rate of frames processed or errors detected within a polling interval. The following formula is used to ﬁnd the station with the highest or lowest rate of frames or errors:

ΔFrames or Errors measured/Δ Time (in seconds)

For example, if one station detects 250 total errors over a 10 second poll interval (250/10

=25 errors per second), and a second station detects 170 errors over the same 10 second interval (170/10 = 17 errors per second), the ﬁrst station is found to have a higher error rate than the second.

When Cumulative is selected, selecting By Highest or Lowest will display the station with the greatest or smallest number of frames or errors detected since the cumulative option was last selected.

When Delta is selected, selecting By Highest or Lowest will display the station with the greatest or smallest number of frames or errors detected during the last poll interval.

Note, too, that changing the calculation mode may change the rankings; a station that has had a high rate of trafﬁc in recent polling intervals may or may not have processed the greatest cumulative number of packets, and so on.

To ﬁnd the station by Highest or Lowest number of frames processed or errors detected:

1.Click on , and drag down to select By Highest or By Lowest.

2.Drag to the right to select the performance or error parameter of interest, and release.

The station experiencing the highest or lowest number of the selected parameter (according to the selected calculation mode) will be highlighted in the map, and a window will appear, displaying the MAC address, node name (if assigned), board and port index (if the station is connected to the monitored hub), and the station’s measurement of the selected parameter. See Figure 3-14, following page, for some sample windows.

Using the Find Options

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Contents Trmmim Page Virus Disclaimer Applicable to licenses to the United States Government only Restricted Rights NoticeContents Chapter Ring Map Chapter Alarm ConﬁgurationChapter Statistics Appendix a Trmmim MIB Structure Chapter Ring Security ConﬁgurationContents Trmmim Using the Trmmim User’s GuideIntroduction to Spma for the Trmmim What’s not in the Trmmim GuideScreen Displays ConventionsIntroduction to Spma for the Trmmim Button Using the MouseFTP Getting HelpTrmmim Firmware Introduction to Spma for the Trmmim Trmmim Firmware Using the Hub View Using the Trmmim Hub ViewNavigating Through the Hub View Using the Trmmim Hub ViewTrmmim Hub View Hub View Front PanelDevice Location UptimeTime and Date Device NameUsing the Trmmim Hub View Using the Mouse in a Hub View Module Module Index FNB Bypass State Port Display Form Hub View Port Color CodesPort Type ErrorsFrames Total BytesFNB Display Monitoring Hub Performance Using the Trmmim Hub View Name and Location Checking Device Status and Updating Front Panel InfoTotal Rings Checking Module StatusContact Date and TimeModule Speed FaultSpeed Fault Location Module NameModule/Port Admin StateChecking Port Status Port NameLink State Time Checking Station StatusInsertion Trap Vendor Station NameUpstream Neighbor/Downstream Neighbor Reverse MACs Physical LocationPriority Port MappingConﬁguring Station Name, Location, or Priority Checking Ring Port StatusMedia Type Fault State TimeMedia Fault ClassChecking Statistics Abort BytesLine BurstManaging the Hub at the Device Level Managing the HubFind MAC Address 12. The Find MAC Address Window Setting the Polling IntervalsContact Status 13. Trmmim Polling IntervalsStatistics Device General StatusDevice Conﬁguration Port Operational StateControlling Token Ring FNB Multiplexer Connections Managing the Hub at the Module LevelINS Bypass BoardLeft Connect Right ConnectClearing the Module FNB Conﬁguration Window Selections Controlling Token Ring SpeedManagement MGT Controlling Token Ring MIM Management ModeEnabling All Ports on Token Ring Modules Auto AUTConverting a Station Port to a Ring-out Port Managing the Hub at the Port LevelEnabling and Disabling Station and Ring Ports Removing a Station from the Ring Ring Map From the Hub View From the command line stand-alone modeLaunching the Ring Map From the iconRing Name Selecting a Ring to MapRing Map Utilization SpeedStations NameQuick Info Popup Window Viewing Station-speciﬁc InformationDrop Board and PortPerformance and Errors Setting a Station NameViewing Management Station Conﬁguration Setting a Station DropCommands Open Status Error StatusActive Monitor ErrorError Report Timer Setting the Statistics Calculation ModeViewing Ring-level Information Set Calculation Mode Window Viewing the Error TableError Table Window Isolating Errors Total ErrorsNon-Isolating Errors Changing the Station Labels Viewing Device Information Device Information Window Setting the Map Poll IntervalBeacon Events Viewing Beacon HistoryActive Monitor Changes Ring PurgesLongest Beacon Last Beacon TypeLast Beacon Beacon Conﬁguration 12. The Beacon Conﬁguration Window Using the Find Options 13. Sample Find Windows Searching by Station Name, MAC Address, Board/Port, or DropFinding the Active Monitor on the Network Finding the Management Station on the Network Frames or Errors measured/Δ Time in seconds 14. Sample Find Highest and Lowest Windows Accessing Other Spma ApplicationsAlarm Conﬁguration Spmarun e5alarms IP address community name Setting and Viewing Ring Alarms Alarm Conﬁguration Setting a Ring Level Alarm Setting and Viewing Station AlarmsAlarm Conﬁguration Alarm Conﬁguration Alarm Conﬁguration Setting a Station Level Alarm Alarm Conﬁguration Setting and Viewing Station Alarms Statistics Using StatisticsSpmarun e5stats IP Address community name Viewing the Ring Station ListDownstream Addr Module and PortStn Name Upstream AddrMonitoring Ring and Station Statistics Using the Reverse MAC ButtonRefreshing the Station List Creating a Pie Chart Creating a Graph or Meter Click mouse button 1 on KBytes Ring and Station VariablesGeneral ProtocolsAC Error Isolating ErrorsLine Errors Burst ErrorAbort Error Non-Isolating ErrorsInternal Error Frequency Errors Token ErrorsStatistics Ring and Station Variables About Ring Security Ring Security ConﬁgurationRing Security Conﬁguration Launching the Security Conﬁguration WindowSecurity Conﬁguration Ring Selection window, -1, will appear Disallowed Count Allowed Station ListAllowed Count Disallowed Station ListDisable Security Security Mode OptionsEnable Security Allowed/Disallowed List Conﬁguration Buttons Building the Allowed List Automatically Conﬁguring SecurityStation Addition Window Deleting Stations from the Allowed or Disallowed ListsClear List Window Clearing All Entries in the Allowed or Disallowed ListRemove Changing the Ring Security ModeTrmmim MIB Structure Ietf MIB SupportNetwork One, Network Two Chassis MGRProtocol Stack Snmp AgentTelnet Brief Word About MIB Components and Community NamesTrmmim MIB Structure Index Index-2 Index-3 Index-4