There are also V1 and V2.
This group is very large. The four
statistics groups
are mainly studied. There is only one table, and most of them lose counters.
History group has two groups
Pay attention to the index relationship
. The difference between the statistical table of the historical group and the data table is that the statistical table provides the time interval. The
utilization rate is the actual transmission bit number/theoretical
denominator bandwidth speed.
Molecular formula grouping overhead (64 preamble, 96 frame interval) + byte number 8
The alarm group will have a threshold again. If the threshold is exceeded, a warning will be sent to the management station. At the same time, the alarm group will be associated with an event, and the event group will be realized.
A table
is definitely direct comparison of
the relative difference is calculated
concept very strict
to have a current time and the
value is taken regardless of a decrease
value takes 2 to rise regardless of the
value taken pipe 3 and consequently
since the alarm may be repeated, there is a Hysteresis (hysteresis ) Alarm mechanism
13 If it exceeds the rise first, then falls to the bottom and then rises, it will alarm.
2 If it exceeds the rise and fall and then exceed, it will alarm.
Just find the bottom.
