Setting Ring-Level Alarm Limits - Enterasys MicroMMAC-T User Manual

Token Ring Alarms
When the Alarm Limits window is invoked, the Station Errors fields do not present any
values. This is because it is possible that station-level alarm limits have been set at
NOTE
individual stations (via the Station Alarm Limits window) that may differ from those set
at other individual stations or at the ring level. Refer to the Station Alarm Limits
windows for individual stations to view their current station-level alarm limits.
The following thresholds, listed in the section of the window labeled Station
Errors, are based on the number of occurrences of the selected event detected by
the station within a user-defined time interval.
Line
Internal
Burst
A.C.
Rx Congestion

Setting Ring-Level Alarm Limits

To set an alarm:
1. If you wish to alter the default threshold values, place the text cursor into the
2. To enable an alarm, click on the checkbox next to the desired alarm event
3. Click on the clock icon next to the Within: field. A New Alarm Timebase text
4-4
The threshold of line errors detected by the selected
station port. These indicate a non-data bit between the
starting and ending delimiters of data, or an FCS error.
The default value is 2.
The threshold of recoverable internal errors detected by
the selected port, indicating that the Network Interface
Card of its attached station may be in marginal operating
condition. The default value is 1.
The threshold of burst errors detected by the selected
station port. These signify a bit information-encoding
error (no transitions between 0 and 1 over five half-bit
times). The default value is 10.
The threshold of frames detected by the selected station
port that contain errors in the A or C bits. The default
value is 2.
The threshold at which the port cannot copy a frame
addressed to it because of a lack of internal buffering.
The default value is 124.
desired alarm event field, and type in the threshold value.
field. An X in the checkbox indicates that the alarm is enabled.
box will appear. In this text box, you enter the time interval for the specified
number of events to occur before the alarm is activated.
Ring-Level Alarm Limits