Cabletron Systems TRMMIM manual Last Beacon Type, Longest Beacon

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Ring Map

Last Beacon Type

This ﬁeld displays the type of beaconing frames last detected on the monitored ring. When a beaconing condition begins, the content of the beacon frames varies depending on the condition that caused the beaconing process. Beacon frames are identiﬁed by a sub-vector which pinpoints the reason for the adapter’s transmission of beacon frames. Possible beacon types are:

Signal Loss Error	This beacon is transmitted by a station when it detects
	signal loss from its upstream neighbor (most likely
	because of a cable fault), enters monitor contention, and
	monitor contention times out.
	If a station detects signal loss while transmitting
	streamingSignal beacons (the two following entries),
	they will be changed to signalLossError beacons.
	If a station detects a signal while transmitting
	signalLossError beacons, they will be changed to
	streamingSignalNotClaimToken (bit streaming) beacons.
Streaming Signal	This beacon is transmitted by a station when a
Not Claim Token	monitor contention time-out occurs in its adapter while it
	is in monitor contention transmit mode, and it did not
	receive any claim token MAC frames during the monitor
	contention period.
Streaming Signal	This beacon is transmitted by a station when monitor
Claim Token	contention times out while its adapter was in monitor
	contention mode (transmit or repeat), and one or more
	claim token MAC frames were received during the
	contention period. This indicates that monitor contention
	could not be resolved within one second.
Recovery Mode Set	This beacon is transmitted when the ring has begun the
	recovery process.
No Beacon Frames	There has been no beacon condition detected on the
Detected	ring yet.

Longest Beacon

Displays the duration of the longest beaconing occurrence, in an hours:minutes:seconds format.

Last Beacon

Displays the duration of the last beaconing occurrence, also in an hours:minutes:seconds format.

3-22	Viewing Ring-level Information

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Contents Trmmim Page Virus Disclaimer Restricted Rights Notice Applicable to licenses to the United States Government onlyContents Chapter Alarm Conﬁguration Chapter Ring MapChapter Statistics Chapter Ring Security Conﬁguration Appendix a Trmmim MIB StructureContents Using the Trmmim User’s Guide TrmmimWhat’s not in the Trmmim Guide Introduction to Spma for the TrmmimConventions Screen DisplaysIntroduction to Spma for the Trmmim Using the Mouse ButtonGetting Help FTPTrmmim Firmware Introduction to Spma for the Trmmim Trmmim Firmware Using the Trmmim Hub View Using the Hub ViewUsing the Trmmim Hub View Navigating Through the Hub ViewHub View Front Panel Trmmim Hub ViewUptime Time and DateDevice Name Device LocationUsing the Trmmim Hub View Using the Mouse in a Hub View Module Module Index FNB Bypass State Hub View Port Color Codes Port Display FormErrors FramesTotal Bytes Port TypeFNB Display Monitoring Hub Performance Using the Trmmim Hub View Checking Device Status and Updating Front Panel Info Name and LocationChecking Module Status ContactDate and Time Total RingsSpeed Fault Speed Fault LocationModule Name ModuleAdmin State Checking Port StatusPort Name Module/PortChecking Station Status Link State TimeInsertion Trap Station Name VendorUpstream Neighbor/Downstream Neighbor Physical Location PriorityPort Mapping Reverse MACsChecking Ring Port Status Conﬁguring Station Name, Location, or PriorityFault State Time Media FaultClass Media TypeChecking Statistics Bytes LineBurst AbortManaging the Hub Managing the Hub at the Device LevelFind MAC Address Setting the Polling Intervals 12. The Find MAC Address Window13. Trmmim Polling Intervals Contact StatusDevice General Status Device ConﬁgurationPort Operational State StatisticsManaging the Hub at the Module Level Controlling Token Ring FNB Multiplexer ConnectionsINS Board Left ConnectRight Connect BypassControlling Token Ring Speed Clearing the Module FNB Conﬁguration Window SelectionsControlling Token Ring MIM Management Mode Enabling All Ports on Token Ring ModulesAuto AUT Management MGTManaging the Hub at the Port Level Converting a Station Port to a Ring-out PortEnabling and Disabling Station and Ring Ports Removing a Station from the Ring Ring Map From the command line stand-alone mode Launching the Ring MapFrom the icon From the Hub ViewSelecting a Ring to Map Ring NameRing Map Speed StationsName UtilizationViewing Station-speciﬁc Information Quick Info Popup WindowBoard and Port DropSetting a Station Name Performance and ErrorsSetting a Station Drop Viewing Management Station ConﬁgurationCommands Error Status Open StatusError Active MonitorSetting the Statistics Calculation Mode Error Report TimerViewing Ring-level Information Viewing the Error Table Set Calculation Mode WindowError Table Window Total Errors Isolating ErrorsNon-Isolating Errors Changing the Station Labels Viewing Device Information Setting the Map Poll Interval Device Information WindowViewing Beacon History Active Monitor ChangesRing Purges Beacon EventsLast Beacon Type Longest BeaconLast Beacon Beacon Conﬁguration 12. The Beacon Conﬁguration Window Using the Find Options Searching by Station Name, MAC Address, Board/Port, or Drop 13. Sample Find WindowsFinding the Active Monitor on the Network Finding the Management Station on the Network Frames or Errors measured/Δ Time in seconds Accessing Other Spma Applications 14. Sample Find Highest and Lowest WindowsAlarm Conﬁguration Spmarun e5alarms IP address community name Setting and Viewing Ring Alarms Alarm Conﬁguration Setting and Viewing Station Alarms Setting a Ring Level AlarmAlarm Conﬁguration Alarm Conﬁguration Alarm Conﬁguration Setting a Station Level Alarm Alarm Conﬁguration Setting and Viewing Station Alarms Using Statistics StatisticsViewing the Ring Station List Spmarun e5stats IP Address community nameModule and Port Stn NameUpstream Addr Downstream AddrUsing the Reverse MAC Button Monitoring Ring and Station StatisticsRefreshing the Station List Creating a Pie Chart Creating a Graph or Meter Click mouse button 1 on Ring and Station Variables GeneralProtocols KBytesIsolating Errors Line ErrorsBurst Error AC ErrorNon-Isolating Errors Abort ErrorInternal Error Token Errors Frequency ErrorsStatistics Ring and Station Variables Ring Security Conﬁguration About Ring SecurityLaunching the Security Conﬁguration Window Ring Security ConﬁgurationSecurity Conﬁguration Ring Selection window, -1, will appear Allowed Station List Allowed CountDisallowed Station List Disallowed CountSecurity Mode Options Disable SecurityEnable Security Allowed/Disallowed List Conﬁguration Buttons Conﬁguring Security Building the Allowed List AutomaticallyDeleting Stations from the Allowed or Disallowed Lists Station Addition WindowClearing All Entries in the Allowed or Disallowed List Clear List WindowChanging the Ring Security Mode RemoveIetf MIB Support Trmmim MIB StructureChassis MGR Protocol StackSnmp Agent Network One, Network TwoBrief Word About MIB Components and Community Names TelnetTrmmim MIB Structure Index Index-2 Index-3 Index-4