RACOM M!DGE3, Руководство пользователя

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Differential
Statistics counters are aggregated between the counter reset and the current time (the moment
when the Display button was pressed). Reset is triggered by a unit reboot or by the Reset statistics
button.
Reset statistics button - initiates the Differential statistic counters reset. Such a reset does not
affect normal statistic counters - i.e. the Historical statistics is not affected by such a Reset at all.
Length of statistics data
Statistics data are stored in the internal database. There is a fixed memory size allocated for the stat-
istics data - the database is limited by number of records. As a result of this, the length of statistics
history - how old records are available - depends on the actual network configuration: The more mon-
itored values, the higher the rate of new recorded values, the shorter the available history.
Some sets of monitored values are constant (Ethernet ports and their counters) or do not rise to a high
values (COM ports, Terminal servers and their counters). What affects the length of available history
the most is the number of radio links - how many radio “neighbours” the unit communicates with or how
many of the neighbouring signals are received. This is different for each unit in the network. For example
Base station in a network operating Base driven protocol is the most active unit thus it has the shortest
history available.
Fig. 8.1: Statistics data in the context of unit interfaces
8.4.1. Parameters
Statistics data are always retrieved as aggregated for a certain time Interval. This Interval can be set
by putting specific date and time into "From" and "To" fields, or using buttons “Last day”, “Last hour”
or “More options” fast presets (from several minutes to several days). Button “Set Current Time” sets
current time to both From and To fields to ease current unit status diagnostics.
There are following sets of statistical data available in the unit:
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M!DGE3 Cellular Router – © RACOM s.r.o. 156
Diagnostics