Rmon Alarm - Alcatel OS-LS-6224 User Manual

4
Command Line Interface
Dropped
Collisions
Related Commands
rmon collection history
show rmon collection history

rmon alarm

The rmon alarm Global Configuration mode command configures alarm conditions.
To remove an alarm, use the no form of this command.
Syntax
rmon alarm index MIB_OBJECT_ID interval rthreshold fthreshold revent
fevent [type type] [startup direction] [owner name]
no rmon alarm index
Parameters
• index — Specifies the alarm index. (Range: 1-65535)
• MIB_OBJECT_ID — Specifies the object identifier (MIB Number) of the
variable to be sampled.
• interval — Specifies the interval in seconds during which the data is
sampled and compared with rising and falling thresholds.
(Range: 1-4294967295)
• rthreshold — Specifies the rising threshold. (Range: 0-4294967295)
• fthreshold — Specifies the falling threshold. (Range: 0-4294967295)
• revent — Specifies the event index used when a rising threshold is crossed.
(Range: 1-65535)
• fevent — Specifies the event index used when a falling threshold is
crossed. (Range: 1-65535)
• type — Specifies the method used for sampling the selected variable and
calculating the value to be compared against the thresholds. Possible
values are absolute and delta.
- If the method is absolute, the value of the selected variable is compared
directly with the thresholds at the end of the sampling interval. If the method
is delta, the selected variable value of the last sample is subtracted from
the current value, and the difference is compared with the thresholds.
• direction — Specifies the alarm that may be sent when this entry is first set
to valid. Possible values are rising, rising-falling and falling.
- If the first sample (after this entry becomes valid) is greater than or equal to
rthreshold and direction is equal to rising or rising-falling, a single rising
alarm is generated. If the first sample (after this entry becomes valid) is less
522
The total number of events in which packets were dropped by the probe due to lack
of resources during this sampling interval. This number is not necessarily the number
of packets dropped, it is just the number of times this condition has been detected.
The best estimate of the total number of collisions on this Ethernet segment during
this sampling interval.