232 RMON Commands
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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
•
index
—The alarm index. (Range: 1 - 65535)
•
variable
—The object identifier of the particular variable to be sampled.
•
interval
—The interval in seconds over which the data is sampled and compared with the
rising and falling thresholds. (Range: 1 - 2147483648)
•
rthreshold
—Rising Threshold. (Range: 1 - 4294967295)
•
fthreshold
—Falling Threshold. (Range: 1 - 4294967295)
•
revent
—The Event index used when a rising threshold is crossed.(Range: 1 - 65535)
•
fevent
—The Event index used when a falling threshold is crossed. (Range: 1 - 65535)
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.
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