<head><META http-equiv="Content-Type" content="text/html; charset=UTF-8"> <link rel="stylesheet" type="text/css" href="mof.css" xmlns:lxslt="http://xml.apache.org/xslt"> <title>DMTF Schema Documentation Schema Documentation</title> </head><html> <body bgcolor="White"> <hr> </hr> <a name="CIM_REDDropperService"></a> <H1>Class CIM_REDDropperService<BR>extends <a href="CIM_DropperService.html">CIM_DropperService</a> </H1>REDDropperService represents the ability to drop network traffic using a Random Early Detection (RED) algorithm. The purpose of a RED algorithm is to avoid congestion (as opposed to managing congestion). Instead of waiting for the queues to fill up, and then dropping large numbers of packets, RED works by monitoring average queue depth. When the queue depth exceeds a minimum threshold, packets are randomly discarded. These discards cause TCP to slow its transmission rate for those connections that experienced the packet discards. Other connections are not affected by these discards. A RED dropper always drops packets from a single queue, which is related to the dropper as the following Service in the NextService association. The queue(s) examined by the drop algorithm are found by following the CalculationServiceForDropper association(s) to determine the dropper's DropThresholdCalculationService(s), and then following the CalculationBasedOnQueue association to find the queue being watched by each CalculationService.<h3> Table of Contents<br> <a href="#c_hierarchy">Hierarchy</a> <br> <a href="#c_subclasses">Direct Known Subclasses</a> <br> <a href="#c_qualifiers">Class Qualifiers</a> <br> <a href="#c_properties">Class Properties</a> <br> <a href="#c_methods">Class Methods</a> <br> </h3> <hr> </hr> <H2> <a name="c_hierarchy">Class Hierarchy</a> </H2> <a href="CIM_ManagedElement.html">CIM_ManagedElement</a> <br data="@NAME"> |<br> +--<a href="CIM_ManagedSystemElement.html">CIM_ManagedSystemElement</a> <br data="@NAME"> |<br> +--<a href="CIM_LogicalElement.html">CIM_LogicalElement</a> <br data="@NAME"> |<br> +--<a href="CIM_EnabledLogicalElement.html">CIM_EnabledLogicalElement</a> <br data="@NAME"> |<br> +--<a href="CIM_Service.html">CIM_Service</a> <br data="@NAME"> |<br> +--<a href="CIM_ConditioningService.html">CIM_ConditioningService</a> <br data="@NAME"> |<br> +--<a href="CIM_DropperService.html">CIM_DropperService</a> <br data="@NAME"> |<br> +--<b>CIM_REDDropperService</b> <br data="CIM_REDDropperService -- CIM_DropperService"> <H2> <a name="c_subclasses">Direct Known Subclasses</a> </H2> <H2> <a name="c_qualifiers">Class Qualifiers</a> </H2> <TABLE BORDER="1" CELLPADDING="1" WIDTH="100%"> <TR> <TH>Name</TH><TH>Data Type</TH><TH>Value</TH> </TR> <TR> <TD VALIGN="TOP">Description</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">REDDropperService represents the ability to drop network traffic using a Random Early Detection (RED) algorithm. The purpose of a RED algorithm is to avoid congestion (as opposed to managing congestion). Instead of waiting for the queues to fill up, and then dropping large numbers of packets, RED works by monitoring average queue depth. When the queue depth exceeds a minimum threshold, packets are randomly discarded. These discards cause TCP to slow its transmission rate for those connections that experienced the packet discards. Other connections are not affected by these discards. A RED dropper always drops packets from a single queue, which is related to the dropper as the following Service in the NextService association. The queue(s) examined by the drop algorithm are found by following the CalculationServiceForDropper association(s) to determine the dropper's DropThresholdCalculationService(s), and then following the CalculationBasedOnQueue association to find the queue being watched by each CalculationService.</TD> </TR> <TR> <TD VALIGN="TOP">UMLPackagePath</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">CIM::Network::QoS</TD> </TR> <TR> <TD VALIGN="TOP">Version</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">2.7.0</TD> </TR> </TABLE> <H2> <a name="c_properties">Class Properties</a> </H2> <H3>Local Class Properties</H3> <TABLE WIDTH="100%" CELLPADDING="1" BORDER="1"> <TR> <TH ROWSPAN="2"><B>Name</B></TH><TH ROWSPAN="2"><B>Data Type</B></TH><TH ROWSPAN="2"><B>Default Value</B></TH><TH COLSPAN="5"><B>Qualifiers</B></TH> </TR> <TR> <TH>Name</TH><TH>Data Type</TH><TH>Value</TH> </TR> <TR> <TH ROWSPAN="5" VALIGN="TOP">MaxQueueThreshold</TH><TD ROWSPAN="5" VALIGN="TOP">uint32</TD><TD ROWSPAN="5" VALIGN="TOP"></TD> </TR> <TR> <TD VALIGN="TOP">Description</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">This is an unsigned 32-bit integer that defines the maximum average queue length at which packets are subject to always being dropped, regardless of the dropping algorithm and probabilities being used. (See the ThresholdUnits property to determine the units of the threshold.)</TD> </TR> <TR> <TD VALIGN="TOP">MaxValue</TD><TD VALIGN="TOP">sint64</TD><TD VALIGN="TOP">1000</TD> </TR> <TR> <TD VALIGN="TOP">MinValue</TD><TD VALIGN="TOP">sint64</TD><TD VALIGN="TOP">0</TD> </TR> <TR> <TD VALIGN="TOP">ModelCorrespondence</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">CIM_REDDropperService.ThresholdUnits</TD> </TR> <TR> <TH ROWSPAN="3" VALIGN="TOP">MinQueueThreshold</TH><TD ROWSPAN="3" VALIGN="TOP">uint32</TD><TD ROWSPAN="3" VALIGN="TOP"></TD> </TR> <TR> <TD VALIGN="TOP">Description</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">This is an unsigned 32-bit integer that defines the minimum average queue depth at which packets are subject to being dropped. (See the ThresholdUnits property to determine the units of the threshold.) The slope of the drop probability function is described by the Start/StopProbability properties.</TD> </TR> <TR> <TD VALIGN="TOP">ModelCorrespondence</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">CIM_REDDropperService.ThresholdUnits</TD> </TR> <TR> <TH ROWSPAN="5" VALIGN="TOP">StartProbability</TH><TD ROWSPAN="5" VALIGN="TOP">uint32</TD><TD ROWSPAN="5" VALIGN="TOP"></TD> </TR> <TR> <TD VALIGN="TOP">Description</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">This is an unsigned 32-bit integer, used in conjunction with the StopDropProbability property. The start and stop probabilities define the slope of the drop probability function. This function governs the rate at which packets are subject to being dropped, as a function of the queue length. This property expresses a drop probability in drops per thousand packets. For example, the value 100 indicates a drop probability of 100 per 1000 packets, that is, 10%. Min and max values are 0 to 1000.</TD> </TR> <TR> <TD VALIGN="TOP">ModelCorrespondence</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">CIM_REDDropperService.StopProbability</TD> </TR> <TR> <TD VALIGN="TOP">PUnit</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">count / packet * 10^-3</TD> </TR> <TR> <TD VALIGN="TOP">Units</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">Per Thousand Packets</TD> </TR> <TR> <TH ROWSPAN="7" VALIGN="TOP">StopProbability</TH><TD ROWSPAN="7" VALIGN="TOP">uint32</TD><TD ROWSPAN="7" VALIGN="TOP"></TD> </TR> <TR> <TD VALIGN="TOP">Description</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">This is an unsigned 32-bit integer, used in conjunction with the StartDropProbability property. The start and stop probabilities define the slope of the drop probability function. This function governs the rate at which packets are subject to being dropped, as a function of the queue length. This property expresses a drop probability in drops per thousand packets. For example, the value 100 indicates a drop probability of 100 per 1000 packets, that is, 10%. Min and max values are 0 to 1000.</TD> </TR> <TR> <TD VALIGN="TOP">MaxValue</TD><TD VALIGN="TOP">sint64</TD><TD VALIGN="TOP">1000</TD> </TR> <TR> <TD VALIGN="TOP">MinValue</TD><TD VALIGN="TOP">sint64</TD><TD VALIGN="TOP">0</TD> </TR> <TR> <TD VALIGN="TOP">ModelCorrespondence</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">CIM_REDDropperService.StartProbability</TD> </TR> <TR> <TD VALIGN="TOP">PUnit</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">count / packet * 10^-3</TD> </TR> <TR> <TD VALIGN="TOP">Units</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">Per Thousand Packets</TD> </TR> <TR> <TH ROWSPAN="4" VALIGN="TOP">ThresholdUnits</TH><TD ROWSPAN="4" VALIGN="TOP">uint16</TD><TD ROWSPAN="4" VALIGN="TOP"></TD> </TR> <TR> <TD VALIGN="TOP">Description</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">ThresholdUnits is an enumerated integer that identifies the units for the Min and MaxQueueThreshold properties. The values are either bytes (1) or packets (2).</TD> </TR> <TR> <TD VALIGN="TOP">ValueMap</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">1, 2</TD> </TR> <TR> <TD VALIGN="TOP">Values</TD><TD VALIGN="TOP">string</TD><TD VALIGN="TOP">Bytes, Packets</TD> </TR> </TABLE> <H3>Inherited Properties</H3> <TABLE BORDER="1" CELLPADDING="1" WIDTH="60%"> <TR> <TH>Name</TH><TH>Data Type</TH><TH>Class Origin</TH> </TR> <TR> <TH VALIGN="TOP">AlwaysDrop</TH><TD VALIGN="TOP">uint16</TD><TD VALIGN="TOP"><a href="CIM_DropperService.html">CIM_DropperService</a></TD> </TR> <TR> <TH VALIGN="TOP">Caption</TH><TD VALIGN="TOP">string</TD><TD VALIGN="TOP"><a href="CIM_ManagedElement.html">CIM_ManagedElement</a></TD> </TR> <TR> <TH VALIGN="TOP">CommunicationStatus</TH><TD VALIGN="TOP">uint16</TD><TD VALIGN="TOP"><a href="CIM_ManagedSystemElement.html">CIM_ManagedSystemElement</a></TD> </TR> <TR> <TH VALIGN="TOP">CreationClassName</TH><TD VALIGN="TOP">string</TD><TD VALIGN="TOP"><a href="CIM_Service.html">CIM_Service</a></TD> </TR> <TR> <TH VALIGN="TOP">Description</TH><TD VALIGN="TOP">string</TD><TD VALIGN="TOP"><a href="CIM_ManagedElement.html">CIM_ManagedElement</a></TD> </TR> <TR> <TH VALIGN="TOP">DetailedStatus</TH><TD VALIGN="TOP">uint16</TD><TD VALIGN="TOP"><a href="CIM_ManagedSystemElement.html">CIM_ManagedSystemElement</a></TD> </TR> <TR> <TH VALIGN="TOP">DropFrom</TH><TD VALIGN="TOP">uint16</TD><TD VALIGN="TOP"><a href="CIM_DropperService.html">CIM_DropperService</a></TD> </TR> <TR> <TH VALIGN="TOP">DropMaintainMetric</TH><TD VALIGN="TOP">uint16</TD><TD VALIGN="TOP"><a href="CIM_DropperService.html">CIM_DropperService</a></TD> </TR> <TR> <TH VALIGN="TOP">DropperType</TH><TD VALIGN="TOP">uint16</TD><TD VALIGN="TOP"><a href="CIM_DropperService.html">CIM_DropperService</a></TD> </TR> <TR> <TH VALIGN="TOP">DropStartMetric</TH><TD VALIGN="TOP">uint16</TD><TD VALIGN="TOP"><a href="CIM_DropperService.html">CIM_DropperService</a></TD> </TR> <TR> <TH VALIGN="TOP">ElementName</TH><TD VALIGN="TOP">string</TD><TD VALIGN="TOP"><a href="CIM_ManagedElement.html">CIM_ManagedElement</a></TD> </TR> <TR> <TH VALIGN="TOP">Enabled</TH><TD VALIGN="TOP">boolean</TD><TD VALIGN="TOP"><a href="CIM_ConditioningService.html">CIM_ConditioningService</a></TD> </TR> <TR> <TH VALIGN="TOP">EnabledDefault</TH><TD VALIGN="TOP">uint16</TD><TD VALIGN="TOP"><a href="CIM_EnabledLogicalElement.html">CIM_EnabledLogicalElement</a></TD> </TR> <TR> <TH VALIGN="TOP">EnabledState</TH><TD VALIGN="TOP">uint16</TD><TD VALIGN="TOP"><a href="CIM_EnabledLogicalElement.html">CIM_EnabledLogicalElement</a></TD> </TR> <TR> <TH VALIGN="TOP">Generation</TH><TD VALIGN="TOP">uint64</TD><TD VALIGN="TOP"><a href="CIM_ManagedElement.html">CIM_ManagedElement</a></TD> </TR> <TR> <TH VALIGN="TOP">HealthState</TH><TD VALIGN="TOP">uint16</TD><TD VALIGN="TOP"><a href="CIM_ManagedSystemElement.html">CIM_ManagedSystemElement</a></TD> </TR> <TR> <TH VALIGN="TOP">InstallDate</TH><TD VALIGN="TOP">datetime</TD><TD VALIGN="TOP"><a href="CIM_ManagedSystemElement.html">CIM_ManagedSystemElement</a></TD> </TR> <TR> <TH VALIGN="TOP">InstanceID</TH><TD VALIGN="TOP">string</TD><TD VALIGN="TOP"><a href="CIM_ManagedElement.html">CIM_ManagedElement</a></TD> </TR> <TR> <TH VALIGN="TOP">Name</TH><TD VALIGN="TOP">string</TD><TD VALIGN="TOP"><a href="CIM_Service.html">CIM_Service</a></TD> </TR> <TR> <TH VALIGN="TOP">OperatingStatus</TH><TD VALIGN="TOP">uint16</TD><TD VALIGN="TOP"><a href="CIM_ManagedSystemElement.html">CIM_ManagedSystemElement</a></TD> </TR> <TR> <TH VALIGN="TOP">OtherDropperType</TH><TD VALIGN="TOP">string</TD><TD VALIGN="TOP"><a href="CIM_DropperService.html">CIM_DropperService</a></TD> </TR> <TR> <TH VALIGN="TOP">OtherEnabledState</TH><TD VALIGN="TOP">string</TD><TD VALIGN="TOP"><a href="CIM_EnabledLogicalElement.html">CIM_EnabledLogicalElement</a></TD> </TR> <TR> <TH VALIGN="TOP">PrimaryOwnerContact</TH><TD VALIGN="TOP">string</TD><TD VALIGN="TOP"><a href="CIM_Service.html">CIM_Service</a></TD> </TR> <TR> <TH VALIGN="TOP">PrimaryOwnerName</TH><TD VALIGN="TOP">string</TD><TD VALIGN="TOP"><a href="CIM_Service.html">CIM_Service</a></TD> </TR> <TR> <TH VALIGN="TOP">PrimaryStatus</TH><TD VALIGN="TOP">uint16</TD><TD VALIGN="TOP"><a href="CIM_ManagedSystemElement.html">CIM_ManagedSystemElement</a></TD> </TR> <TR> <TH VALIGN="TOP">RequestedState</TH><TD VALIGN="TOP">uint16</TD><TD VALIGN="TOP"><a href="CIM_EnabledLogicalElement.html">CIM_EnabledLogicalElement</a></TD> </TR> <TR> <TH VALIGN="TOP">Started</TH><TD VALIGN="TOP">boolean</TD><TD VALIGN="TOP"><a href="CIM_Service.html">CIM_Service</a></TD> </TR> <TR> <TH VALIGN="TOP">StartMode</TH><TD VALIGN="TOP">string</TD><TD VALIGN="TOP"><a href="CIM_Service.html">CIM_Service</a></TD> </TR> <TR> <TH VALIGN="TOP">Status</TH><TD VALIGN="TOP">string</TD><TD VALIGN="TOP"><a href="CIM_ManagedSystemElement.html">CIM_ManagedSystemElement</a></TD> </TR> <TR> <TH VALIGN="TOP">SystemCreationClassName</TH><TD VALIGN="TOP">string</TD><TD VALIGN="TOP"><a href="CIM_Service.html">CIM_Service</a></TD> </TR> <TR> <TH VALIGN="TOP">SystemName</TH><TD VALIGN="TOP">string</TD><TD VALIGN="TOP"><a href="CIM_Service.html">CIM_Service</a></TD> </TR> <TR> <TH VALIGN="TOP">TimeOfLastStateChange</TH><TD VALIGN="TOP">datetime</TD><TD VALIGN="TOP"><a href="CIM_EnabledLogicalElement.html">CIM_EnabledLogicalElement</a></TD> </TR> <TR> <TH VALIGN="TOP">TransitioningToState</TH><TD VALIGN="TOP">uint16</TD><TD VALIGN="TOP"><a href="CIM_EnabledLogicalElement.html">CIM_EnabledLogicalElement</a></TD> </TR> <TR> <TH VALIGN="TOP">AvailableRequestedStates</TH><TD VALIGN="TOP">uint16[]</TD><TD VALIGN="TOP"><a href="CIM_EnabledLogicalElement.html">CIM_EnabledLogicalElement</a></TD> </TR> <TR> <TH VALIGN="TOP">OperationalStatus</TH><TD VALIGN="TOP">uint16[]</TD><TD VALIGN="TOP"><a href="CIM_ManagedSystemElement.html">CIM_ManagedSystemElement</a></TD> </TR> <TR> <TH VALIGN="TOP">StatusDescriptions</TH><TD VALIGN="TOP">string[]</TD><TD VALIGN="TOP"><a href="CIM_ManagedSystemElement.html">CIM_ManagedSystemElement</a></TD> </TR> </TABLE> <h2> <a name="c_methods">Class Methods</a> </h2> <H3>Inherited Class Methods</H3> <TABLE BORDER="1" CELLPADDING="1" WIDTH="60%"> <TR> <TH>Name</TH><TH>Return Type</TH><TH>Class Origin</TH> </TR> <TR> <TH VALIGN="TOP">ChangeAffectedElementsAssignedSequence</TH><TD VALIGN="TOP">uint32</TD><TD VALIGN="TOP"><a href="CIM_Service.html">CIM_Service</a></TD> </TR> <TR> <TH VALIGN="TOP">RequestStateChange</TH><TD VALIGN="TOP">uint32</TD><TD VALIGN="TOP"><a href="CIM_EnabledLogicalElement.html">CIM_EnabledLogicalElement</a></TD> </TR> <TR> <TH VALIGN="TOP">StartService</TH><TD VALIGN="TOP">uint32</TD><TD VALIGN="TOP"><a href="CIM_Service.html">CIM_Service</a></TD> </TR> <TR> <TH VALIGN="TOP">StopService</TH><TD VALIGN="TOP">uint32</TD><TD VALIGN="TOP"><a href="CIM_Service.html">CIM_Service</a></TD> </TR> </TABLE> </body> </html>
