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authorvenkat.puvvada <venkat.puvvada>2011-02-17 14:16:11 +0000
committervenkat.puvvada <venkat.puvvada>2011-02-17 14:16:11 +0000
commit4681c0f594d929037d507ca37befaf25088dc309 (patch)
treece98396f47a4aea22651ca5d83722e0eb7b2163b /Schemas/CIM228/DMTF/Network/CIM_REDDropperService.mof
parent366071f7bcb2b998f9b940b0913c6438c1064ddc (diff)
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BUG#: 8931
TITLE: Add Schema 2.28 to the cvs DESCRIPTION:
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+// Copyright (c) 2005 DMTF. All rights reserved.
+// <change cr="ArchCR00066.004" type="add">Add UmlPackagePath
+// qualifier values to CIM Schema.</change>
+// ==================================================================
+// CIM_REDDropperService
+// ==================================================================
+ [Version ( "2.7.0" ),
+ UMLPackagePath ( "CIM::Network::QoS" ),
+ Description (
+ "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. \n"
+ "\n"
+ "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." )]
+class CIM_REDDropperService : CIM_DropperService {
+
+ [Description (
+ "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." ),
+ ModelCorrespondence { "CIM_REDDropperService.ThresholdUnits" }]
+ uint32 MinQueueThreshold;
+
+ [Description (
+ "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.)" ),
+ MinValue ( 0 ),
+ MaxValue ( 1000 ),
+ ModelCorrespondence { "CIM_REDDropperService.ThresholdUnits" }]
+ uint32 MaxQueueThreshold;
+
+ [Description (
+ "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. \n"
+ "\n"
+ "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." ),
+ Units ( "Per Thousand Packets" ),
+ ModelCorrespondence { "CIM_REDDropperService.StopProbability" }]
+ uint32 StartProbability;
+
+ [Description (
+ "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. \n"
+ "\n"
+ "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." ),
+ Units ( "Per Thousand Packets" ),
+ MinValue ( 0 ),
+ MaxValue ( 1000 ),
+ ModelCorrespondence { "CIM_REDDropperService.StartProbability" }]
+ uint32 StopProbability;
+
+ [Description (
+ "ThresholdUnits is an enumerated integer that identifies "
+ "the units for the Min and MaxQueueThreshold properties. "
+ "The values are either bytes (1) or packets (2)." ),
+ ValueMap { "1", "2" },
+ Values { "Bytes", "Packets" }]
+ uint16 ThresholdUnits;
+
+
+};