D-Link DES-6300 User Manual page 86

MCLI User Guide
Object/OID
historyControlTable
historyControlBucketsGranted
1.3.6.1.2.1.16.2.1.1.4
historyControlTable
historyControlInterval
1.3.6.1.2.1.16.2.1.1.5
5-60
Description
The number of discrete sampling intervals over
which data shall be saved in the part of the media-
specific table associated with this
historyControlEntry.
When the associated
HistoryControlBucketsRequested object is created
or modified, the probe should set this object as
closely to the requested value as is possible for the
particular probe implementation and available
resources. The probe must not lower this value
except as a result of a modification to the
associated historyControlBucketsRequested object.
There will be times when the actual number of
buckets associated with this entry is less than the
value of this object. In this case, at the end of each
sampling interval, a new bucket will be added to the
media-specific table.
When the number of buckets reaches the value of
this object and a new bucket is to be added to the
media-specific table, the oldest bucket associated
with this historyControlEntry shall be deleted by the
agent so that the new bucket can be added.
When the value of this object changes to a value
less than the current value, entries are deleted from
the media-specific table associated with this
historyControlEntry. Enough of the oldest of these
entries shall be deleted by the agent so that their
number remains less than or equal to the new value
of this object.
When the value of this object changes to a value
greater than the current value, the number of
associated media- specific entries may be allowed
to grow.
The interval in seconds over which the data is
sampled for each bucket in the part of the media-
specific table associated with this
historyControlEntry. This interval can be set to any
number of seconds between 1 and 3600 (1 hour).
Because the counters in a bucket may overflow at
their maximum value with no indication, a prudent
manager will take into account the possibility of
overflow in any of the associated counters. It is
important to consider the minimum time in which
any counter could overflow on a particular media
type and set the historyControlInterval object to a
value less than this interval. This is typically most
important for the 'octets' counter in any media-
specific table. For example, on an Ethernet
network, the etherHistoryOctets counter could
overflow in about one hour at the Ethernet's
maximum utilization.
This object may not be modified if the associated
historyControlStatus object is equal to valid(1).
Field Name in NMS
Buckets Granted
(History Control Table
Window)
Interval (History Control
Table Window)