Siemens HiPath 3000 Series, Сервисная документация

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sysdat.fm
A31003-H3590-S100-7-7620, 06/2012
HiPath 3000/5000 V9, Service documentation
2-53
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System Data
Dynamic Configuration Rules
2.5 Dynamic Configuration Rules
This section describes the underlying theoretical principles for the thumb rule by which the con-
trol load, and thus the dynamic performance characteristics, of HiPath 3000/5000 V9 systems
can be determined. The principles from which this document is derived are the same as those
for the thumb rule for HiPath 4000, i.e., every interface is considered in light of its outgoing and
incoming seizure intensity.
2.5.1 Dynamic performance
The dynamic performance characteristics of HiPath 3000/5000 V9 are as follows:
This thumb rule can also be used to calculate the maximum number of terminals for certain
configurations. The method and some sample tables are described in the Section 2.5.5, “Max-
imum Number of Devices for Special Cases”.
2.5.2 Thumb Rule for HiPath 3000/5000 V9
2.5.2.1 Procedural Principles
The thumb rule presented below for calculating the dynamic load for HiPath switches is based
on the principle of considering every interface (telephones and trunks) in light of its (incoming
and outgoing) seizure intensity. In the case of an external seizure, for example, the CPU load
is split between the telephone and the trunk.
The thumb rule for determining the manageable load takes multiple factors into account. This
includes not only several parameters, whose values can be determined from the current con-
figuration of the switch being examined, but also a variety of interfaces and performance char-
acteristics. These interfaces are each assigned a specific weight in accordance with their share
of the load to be managed. The basis for this is the average overhead for an Anate seizure
(60% internal, 20% outgoing external, and 20% incoming external seizure). This enables all
values to be normalized to Anate seizures. The planned switch configurations are then permis-
sible if the sum of all seizures - normalized to Anate seizures - does not exceed a maximum
value depending on the current switch variant and the computing hardware being used.
The goal is to detect critical switch configurations early in the planning stage and to then per-
form a more precise analysis.
Table 2-33 Dynamic performance of the HiPath 3000/5000 V9
Standard BHCA Analog IP Phone ACD CorNet-N CorNet NQ
HiPath 33x0
HiPath 35x0 2,880 1,250 690 1,650 1,420
HiPath 3800 22,600 9,820 5,400 13,000 11,200