Network Performance Schema

Title: Message

Terminology:

NetworkEntity, Nodes and Paths

CIM corollaries: Nodes are Systems (subclasses are AdminDomain and AutonomousSystem, and ComputerSystem which may be

virtual, dedicated to switching or routing, or a user's computer) and NetworkPipes (which may be uni or bi-directional, which

tie together two endpoints/interfaces, and which can be broken down into lower level 'pipes' that can be combined in parallel or

in series)

Characteristic

CIM corollary: The definition of a property in a class - A subclass of StatisticalData

StatisticalData is tied to the entity being reported against, via the association ElementStatisticalData

MeasurementMethodology and Tools

CIM corollary: Service (subclass to describe network test tools)

Observation

CIM corollary: The value of a property -> An instance of the subclass of StatisticalData

To examine one characteristic: Delay (Roundtrip, One way, Jitter)

Could define:

1. A NetworkTestTool, subclass of CIM_Service with properties:

ElementName (tool name)

Version

TimeAccuracyMethod (enum)

TimeResolution

TimeAccuracy

2. A NetworkPathStatistics, subclass of CIM_StatisticalData, associated to the NetworkTestTool via ElementStatisticalData with properties:

StartTime

EndTime

Source

Destination

PacketSize

NumberOfPackets

PacketSpacing (enum)

PacketGap

PacketType (enum)

PortNumber

Priority array (enum)

LossThreshold

ReportedInfo (enum - RT, S2D, D2S)

3. A NetworkPathDelayStatistics, subclass of NetworkPathStatistics, with properties:

MedianDelay

MinDelay

MaxDelay

SumOfDelays

Andrea