rmon alarm 175
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 variable interval rthreshold fthreshold revent fevent
[type type] [startup direction] [owner name]
no rmon alarm index
Parameters
■index — Specifies the alarm index. (Range: 1-65535)
■variable — Specifies the object identifier 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:
0-2147483647)
Undersize The number of packets received during this sampling interval
that were less than 64 octets long (excluding framing bits but
including FCS octets) and were otherwise well formed.
Oversize The number of packets received during this sampling interval
that were longer than 1518 octets (excluding framing bits but
including FCS octets) but were otherwise well formed.
Fragments The total number of packets received during this sampling
interval that were less than 64 octets in length (excluding
framing bits but including FCS octets) had either a bad Frame
Check Sequence (FCS) with an integral number of octets (FCS
Error), or a bad FCS with a non-integral number of octets
(AlignmentError). It is normal for etherHistoryFragments to
increment because it counts both runts (which are normal
occurrences due to collisions) and noise hits.
Jabbers The number of packets received during this sampling interval
that were longer than 1518 octets (excluding framing bits but
including FCS octets), and had either a bad Frame Check
Sequence (FCS) with an integral number of octets (FCS Error)
or a bad FCS with a non-integral number of octets (Alignment
Error).
Dropped 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.
Collisions The best estimate of the total number of collisions on this
Ethernet segment during this sampling interval.
Field Description