Total Errors, Isolating Errors | Cabletron Systems TRMMIM instruction

Ring Map

Basic performance information is provided regardless of which error type has been selected for display:

Frames	The number of frames transmitted by the associated
	station as measured using the currently selected
	calculation mode.
Bytes	The number of bytes transmitted by the associated
	station as measured using the currently selected
	calculation mode.

The remainder of the window displays the counts for the error type or types you selected when you launched the window. Remember, these counts reﬂect which stations are reporting the error to the Ring Error Monitor, not which stations are experiencing the error condition.

If the error is an isolating error, you can narrow the fault to a certain domain – that is

TIP the adapter card of the reporting station or its downstream neighbor – or to the cabling between the two stations. Non-isolating errors cannot be narrowed to a fault domain (with the exception of Congestion errors), because they could be caused by any station on the ring.

Total Errors

The number of soft errors detected by the associated station as measured using the currently selected calculation mode.

Isolating Errors
Line Errors	The count of line errors detected by the associated station
	during the last statistics poll interval. A line error
	indicates the presence of a coding violation between the
	starting and ending delimiters of data, a frame check
	sequence error, or a code violation in a token. These can
	be caused by power surges on the ring; they are counted,
	but initiate no other recovery procedures.
Burst Errors	The count of burst errors detected by the associated
	station. A burst error occurs when ﬁve half-bits of
	Manchester-encoded data are received by a station
	without a phase change (a signal transition from 0 to 1 or
	from 1 to 0). This error is normal when stations enter or
	leave the ring without phantom current; however, it can
	also indicate a problem with the receiver on the reporting
	node, the transmitter on its NAUN, or the cabling or hub
	hardware between them. Burst errors will cause the
	active monitor to initiate the ring purge process, and may
	cause frames to be lost on the ring.

3-16	Viewing Ring-level Information

Image 66

Cabletron Systems TRMMIM manual Total Errors, Isolating Errors

Contents

Trmmim Page Virus Disclaimer Restricted Rights Notice Applicable to licenses to the United States Government only Contents Chapter Alarm Conﬁguration Chapter Ring MapChapter Statistics Chapter Ring Security Conﬁguration Appendix a Trmmim MIB Structure Contents Using the Trmmim User’s Guide Trmmim What’s not in the Trmmim Guide Introduction to Spma for the Trmmim Conventions Screen Displays Introduction to Spma for the Trmmim Using the Mouse Button Getting Help FTP Trmmim Firmware Introduction to Spma for the Trmmim Trmmim Firmware Using the Trmmim Hub View Using the Hub View Using the Trmmim Hub View Navigating Through the Hub View Hub View Front Panel Trmmim Hub View Device Name UptimeTime and Date Device Location Using the Trmmim Hub View Using the Mouse in a Hub View Module Module Index FNB Bypass State Hub View Port Color Codes Port Display Form Total Bytes ErrorsFrames Port Type FNB Display Monitoring Hub Performance Using the Trmmim Hub View Checking Device Status and Updating Front Panel Info Name and Location Date and Time Checking Module StatusContact Total Rings Module Name Speed FaultSpeed Fault Location Module Port Name Admin StateChecking Port Status Module/Port Checking Station Status Link State TimeInsertion Trap Station Name VendorUpstream Neighbor/Downstream Neighbor Port Mapping Physical LocationPriority Reverse MACs Checking Ring Port Status Conﬁguring Station Name, Location, or Priority Class Fault State TimeMedia Fault Media Type Checking Statistics Burst BytesLine Abort Managing the Hub Managing the Hub at the Device LevelFind MAC Address Setting the Polling Intervals 12. The Find MAC Address Window 13. Trmmim Polling Intervals Contact Status Port Operational State Device General StatusDevice Conﬁguration Statistics Managing the Hub at the Module Level Controlling Token Ring FNB Multiplexer Connections INS Right Connect BoardLeft Connect Bypass Controlling Token Ring Speed Clearing the Module FNB Conﬁguration Window Selections Auto AUT Controlling Token Ring MIM Management ModeEnabling All Ports on Token Ring Modules Management MGT Managing 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 icon From the command line stand-alone modeLaunching the Ring Map From the Hub View Selecting a Ring to Map Ring Name Ring Map Name SpeedStations Utilization Viewing Station-speciﬁc Information Quick Info Popup Window Board and Port Drop Setting a Station Name Performance and Errors Setting a Station Drop Viewing Management Station Conﬁguration Commands Error Status Open Status Error Active Monitor Setting the Statistics Calculation Mode Error Report TimerViewing Ring-level Information Viewing the Error Table Set Calculation Mode Window Error Table Window Total Errors Isolating Errors Non-Isolating Errors Changing the Station Labels Viewing Device Information Setting the Map Poll Interval Device Information Window Ring Purges Viewing Beacon HistoryActive Monitor Changes Beacon Events Last 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 Windows Finding 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 Windows Alarm Conﬁguration Spmarun e5alarms IP address community name Setting and Viewing Ring Alarms Alarm Conﬁguration Setting and Viewing Station Alarms Setting a Ring Level Alarm Alarm Conﬁguration Alarm Conﬁguration Alarm Conﬁguration Setting a Station Level Alarm Alarm Conﬁguration Setting and Viewing Station Alarms Using Statistics Statistics Viewing the Ring Station List Spmarun e5stats IP Address community name Upstream Addr Module and PortStn Name Downstream Addr Using 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 Protocols Ring and Station VariablesGeneral KBytes Burst Error Isolating ErrorsLine Errors AC Error Non-Isolating Errors Abort ErrorInternal Error Token Errors Frequency Errors Statistics Ring and Station Variables Ring Security Conﬁguration About Ring Security Launching the Security Conﬁguration Window Ring Security Conﬁguration Security Conﬁguration Ring Selection window, -1, will appear Disallowed Station List Allowed Station ListAllowed Count Disallowed Count Security Mode Options Disable SecurityEnable Security Allowed/Disallowed List Conﬁguration Buttons Conﬁguring Security Building the Allowed List Automatically Deleting Stations from the Allowed or Disallowed Lists Station Addition Window Clearing All Entries in the Allowed or Disallowed List Clear List Window Changing the Ring Security Mode Remove Ietf MIB Support Trmmim MIB Structure Snmp Agent Chassis MGRProtocol Stack Network One, Network Two Brief Word About MIB Components and Community Names Telnet Trmmim MIB Structure Index Index-2 Index-3 Index-4