Class CIM_WeightedREDDropperService
extends CIM_DropperService

This class represents a logical entity that resides in the data forwarding path of a network device. It describes the ability to drop network traffic using a Weighted Random Early Detection (WRED) algorithm. Like RED, the purpose of WRED is to avoid congestion (as opposed to managing congestion). This modification of the basic RED algorithm enables packets belonging to different traffic classes to be dropped at different queue depths. This algorithm also enables discard to be done based on different information contained in the packet header, such as IP Precedence, RSVP session parameters, or even on other factors not directly encoded in the packet header, such as the queue depth. Implementation of this class has shown that weighting should not be a property of the class (but on an association to it), and that there is insufficient data to process the drop metric. The class is deprecated pending further definition by the DMTF.

Class Hierarchy

CIM_ManagedElement
   |
   +--CIM_ManagedSystemElement
   |
   +--CIM_LogicalElement
   |
   +--CIM_EnabledLogicalElement
   |
   +--CIM_Service
   |
   +--CIM_ConditioningService
   |
   +--CIM_DropperService
   |
   +--CIM_WeightedREDDropperService

Direct Known Subclasses

None.

Class Qualifiers

NameData TypeValueScopeFlavors
DeprecatedstringNo valueTOSUBCLASS= falseNone
DescriptionstringThis class represents a logical entity that resides in the data forwarding path of a network device. It describes the ability to drop network traffic using a Weighted Random Early Detection (WRED) algorithm. Like RED, the purpose of WRED is to avoid congestion (as opposed to managing congestion). This modification of the basic RED algorithm enables packets belonging to different traffic classes to be dropped at different queue depths. This algorithm also enables discard to be done based on different information contained in the packet header, such as IP Precedence, RSVP session parameters, or even on other factors not directly encoded in the packet header, such as the queue depth. Implementation of this class has shown that weighting should not be a property of the class (but on an association to it), and that there is insufficient data to process the drop metric. The class is deprecated pending further definition by the DMTF.None TRANSLATABLE= true
Versionstring2.7.0TOSUBCLASS= falseTRANSLATABLE= true

Local Class Properties

NameData TypeQualifiers
NameData TypeValueScopeFlavors
AlwaysDropuint16
DeprecatedstringCIM_DropperService.DropperTypeTOSUBCLASS= falseNone
DescriptionstringThis property indicates whether the Dropper will always drop incoming packets (value=1) regardless of their type. It is deprecated since its information is conveyed by the DropperType property (value=4, 'Absolute Dropper').None TRANSLATABLE= true
ValueMapstring0, 1, 2None None
ValuesstringUnknown, Always Drop, Do Not Always DropNone TRANSLATABLE= true
Captionstring
DescriptionstringThe Caption property is a short textual description (one- line string) of the object.None TRANSLATABLE= true
MaxLenuint3264None None
CreationClassNamestring
DescriptionstringCreationClassName indicates the name of the class or the subclass used in the creation of an instance. When used with the other key properties of this class, this property allows all instances of this class and its subclasses to be uniquely identified.None TRANSLATABLE= true
KeybooleantrueNone OVERRIDABLE= false
MaxLenuint32256None None
Descriptionstring
DescriptionstringThe Description property provides a textual description of the object.None TRANSLATABLE= true
DropFromuint16
DescriptionstringThis enumeration indicates the point in the associated queue (associated via the NextService relationship) from which packets should be dropped. If the value is 0 "Unknown", then packets MAY be dropped from any location in the queue.None TRANSLATABLE= true
ValueMapstring0, 1, 2None None
ValuesstringUnknown, Head, TailNone TRANSLATABLE= true
DropMaintainMetricuint16
DescriptionstringThis property is an enumerated unsigned 16-bit integer that defines the metric used to determine when ALL packets will be dropped REGARDLESS of the type of algorithm used by this Dropper. Values are: 1: Other 2: Queue Threshold 3: Arrival RateNone TRANSLATABLE= true
ValueMapstring1, 2, 3None None
ValuesstringOther, Queue Threshold, Arrival RateNone TRANSLATABLE= true
DropMetricuint16
DeprecatedstringNo valueTOSUBCLASS= falseNone
DescriptionstringThis property is an enumerated 16-bit unsigned integer, and defines the type of metric that is used to drop traffic. Values are: 1: Other 2: IP Precedence 3: DSCP Value 4: 802.1P Priority Value 5: RSVP Session 6: Queue Depth 7: Packet Arrival RateNone TRANSLATABLE= true
ModelCorrespondencestringCIM_WeightedREDDropperService.OtherDropMetricNone None
ValueMapstring1, 2, 3, 4, 5, 6, 7None None
ValuesstringOther, IP Precedence, DSCP Value, 802.1P Priority Value, RSVP Session, Queue Depth, Packet Arrival RateNone TRANSLATABLE= true
DropperTypeuint16
DescriptionstringThis property is an enumerated 16-bit unsigned integer that defines the type of dropper. Its Values are: 1: Other 2: Random 3: HeadTail 4: Absolute Dropper Note: The DropperType property and the DropperService subclasses provide similar information. This property is defined for query purposes and to not require a subclass for all types of DropperServices (for example, to describe an Absolute Dropper in today's model). Therefore, DropperService can be instantiated directly and the Type property is needed.None TRANSLATABLE= true
ModelCorrespondencestringCIM_DropperService.OtherDropperTypeNone None
ValueMapstring1, 2, 3, 4None None
ValuesstringOther, Random, HeadTail, Absolute DropperNone TRANSLATABLE= true
DropStartMetricuint16
DescriptionstringThis property is an enumerated unsigned 16-bit integer that defines the metric used to trigger the start of dropping packets. This does NOT mean that all packets will be dropped; it does mean that SOME packets will start to be dropped. The number and type of packets dropped is a function of the type of algorithm used by this Dropper. Values are: 1: Other 2: Queue Threshold 3: Arrival RateNone TRANSLATABLE= true
ValueMapstring1, 2, 3None None
ValuesstringOther, Queue Threshold, Arrival RateNone TRANSLATABLE= true
ElementNamestring
DescriptionstringA user-friendly name for the object. This property allows each instance to define a user-friendly name IN ADDITION TO its key properties/identity data, and description information. Note that ManagedSystemElement's Name property is also defined as a user-friendly name. But, it is often subclassed to be a Key. It is not reasonable that the same property can convey both identity and a user friendly name, without inconsistencies. Where Name exists and is not a Key (such as for instances of LogicalDevice), the same information MAY be present in both the Name and ElementName properties.None TRANSLATABLE= true
Enabledboolean
DeprecatedstringCIM_EnabledLogicalElement.EnabledStateTOSUBCLASS= falseNone
DescriptionstringThis property is a boolean that, if TRUE, signifies that one or more conditioning functions can be performed on traffic encountered by this ConditioningService. This allows one or more ConditioningServices to be enabled or disabled to provide different types of conditioning for traffic. Enabled is deprecated in lieu of a similar (but more generally and completely defined) property which is inherited.None TRANSLATABLE= true
EnabledDefaultuint16
DescriptionstringAn enumerated value indicating an administrator's default/startup configuration for an element's Enabled State. By default, the element is "Enabled" (value=2).None TRANSLATABLE= true
ValueMapstring2, 3, 5, 6, 7, 8..32767, 32768..65535None None
ValuesstringEnabled, Disabled, Not Applicable, Enabled but Offline, No Default, DMTF Reserved, Vendor ReservedNone TRANSLATABLE= true
WritebooleantrueNone None
EnabledStateuint16
DescriptionstringEnabledState is an integer enumeration that indicates the enabled/disabled states of an element. It can also indicate the transitions between these requested states. For example, shutting down (value = 4) and starting (value=10) are transient states between enabled and disabled. The following text briefly summarizes the various enabled/disabled states: Enabled (2) indicates that the element is/could be executing commands, will process any queued commands, and queues new requests. Disabled (3) indicates that the element will not execute commands and will drop any new requests. Shutting Down (4) indicates that the element is in the process of going to a Disabled state. Not Applicable (5) indicates the element doesn't support being enabled/disabled. Enabled but Offline (6) indicates that the element may be completing commands, and will drop any new requests. Test (7) indicates that the element is in a test state. Deferred (8) indicates that the element may be completing commands, but will queue any new requests. Quiesce (9) indicates that the element is enabled but in a restricted mode. The element's behavior is similar to the Enabled state, but it only processes a restricted set of commands. All other requests are queued. Starting (10) indicates that the element is in the process of going to an Enabled state. New requests are queued.None TRANSLATABLE= true
ModelCorrespondencestringCIM_EnabledLogicalElement.OtherEnabledStateNone None
ValueMapstring0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11..32767, 32768..65535None None
ValuesstringUnknown, Other, Enabled, Disabled, Shutting Down, Not Applicable, Enabled but Offline, In Test, Deferred, Quiesce, Starting, DMTF Reserved, Vendor ReservedNone TRANSLATABLE= true
InstallDatedatetime
DescriptionstringA datetime value indicating when the object was installed. A lack of a value does not indicate that the object is not installed.None TRANSLATABLE= true
MappingStringsstringMIF.DMTF|ComponentID|001.5None None
Namestring
DescriptionstringThe Name property uniquely identifies the Service and provides an indication of the functionality that is managed. This functionality is described in more detail in the object's Description property.None TRANSLATABLE= true
KeybooleantrueNone OVERRIDABLE= false
MaxLenuint32256None None
OverridestringNameNone OVERRIDABLE= false
OtherDropMetricstring
DeprecatedstringNo valueTOSUBCLASS= falseNone
DescriptionstringThis string property is used in conjunction with the DropMetric property. When the value of DropMetric is 1 (i.e., "Other"), then the type of metric to be used is defined in this property.None TRANSLATABLE= true
ModelCorrespondencestringCIM_WeightedREDDropperService.DropMetricNone None
OtherDropperTypestring
DescriptionstringThis property contains a vendor-specific value for the type of dropping that is done. It is used when the value of the DropperType property is 1 (Other).None TRANSLATABLE= true
ModelCorrespondencestringCIM_DropperService.DropperTypeNone None
OtherEnabledStatestring
DescriptionstringA string describing the element's enabled/disabled state when the EnabledState property is set to 1 ("Other"). This property MUST be set to NULL when EnabledState is any value other than 1.None TRANSLATABLE= true
ModelCorrespondencestringCIM_EnabledLogicalElement.EnabledStateNone None
PrimaryOwnerContactstring
DescriptionstringA string that provides information on how the primary owner of the Service can be reached (e.g. phone number, email address, ...).None TRANSLATABLE= true
MappingStringsstringMIF.DMTF|General Information|001.4None None
MaxLenuint32256None None
WritebooleantrueNone None
PrimaryOwnerNamestring
DescriptionstringThe name of the primary owner for the service, if one is defined. The primary owner is the initial support contact for the Service.None TRANSLATABLE= true
MappingStringsstringMIF.DMTF|General Information|001.3None None
MaxLenuint3264None None
WritebooleantrueNone None
RequestedStateuint16
DescriptionstringRequestedState is an integer enumeration indicating the last requested or desired state for the element. The actual state of the element is represented by EnabledState. This property is provided to compare the last requested and current enabled/disabled states. Note that when EnabledState is set to 5 ("Not Applicable"), then this property has no meaning. By default, the element's RequestedState is 5 ("No Change"). Refer to the EnabledState's property Description for explanations of the values in the RequestedState enumeration. It should be noted that there are two new values in RequestedState that build on the statuses of EnabledState. These are "Reboot" (10) and "Reset" (11). The former, Reboot, refers to doing a "Shut Down" and then moving to an "Enabled" state. The latter, Reset, indicates that the element is first "Disabled" and then "Enabled". The distinction between requesting "Shut Down" and "Disabled" should also be noted. The former, Shut Down, requests an orderly transition to the Disabled state, and MAY involve removing power, to completely erase any existing state. The latter, the Disabled state, requests an immediate disabling of the element, such that it will not execute or accept any commands or processing requests. This property is set as the result of a method invocation (such as Start or StopService on CIM_Service), or may be overridden and defined as WRITEable in a subclass. The method approach is considered superior to a WRITEable property, since it allows an explicit invocation of the operation and the return of a result code.None TRANSLATABLE= true
ModelCorrespondencestringCIM_EnabledLogicalElement.EnabledStateNone None
ValueMapstring2, 3, 4, 5, 6, 7, 8, 9, 10, 11, .., 32768..65535None None
ValuesstringEnabled, Disabled, Shut Down, No Change, Offline, Test, Deferred, Quiesce, Reboot, Reset, DMTF Reserved, Vendor ReservedNone TRANSLATABLE= true
Startedboolean
DescriptionstringStarted is a boolean indicating whether the Service has been started (TRUE), or stopped (FALSE).None TRANSLATABLE= true
StartModestring
DeprecatedstringCIM_Service.EnabledDefaultTOSUBCLASS= falseNone
DescriptionstringStartMode is a string value indicating whether the Service is automatically started by a System, Operating System, etc. or only started upon request. This property is deprecated in lieu of the EnabledDefault property inherited from EnabledLogicalElement, which addresses the same semantics. The change to a uint16 data type was discussed when CIM V2.0 was defined. However, existing V1.0 implementations used the string property and did not want to modify their code. Therefore, StartMode was grandfathered into the Schema. Use of the Deprecated qualifier allows the maintenance of the existing property, but also permits an improved, clarified definition using EnabledDefault.None TRANSLATABLE= true
MaxLenuint3210None None
ValueMapstringAutomatic, ManualNone None
Statusstring
DeprecatedstringCIM_ManagedSystemElement.OperationalStatusTOSUBCLASS= falseNone
DescriptionstringA string indicating the current status of the object. Various operational and non-operational statuses are defined. This property is deprecated in lieu of OperationalStatus, which includes the same semantics in its enumeration. This change is made for 3 reasons: 1) Status is more correctly defined as an array. This overcomes the limitation of describing status via a single value, when it is really a multi-valued property (for example, an element may be OK AND Stopped. 2) A MaxLen of 10 is too restrictive and leads to unclear enumerated values. And, 3) The change to a uint16 data type was discussed when CIM V2.0 was defined. However, existing V1.0 implementations used the string property and did not want to modify their code. Therefore, Status was grandfathered into the Schema. Use of the Deprecated qualifier allows the maintenance of the existing property, but also permits an improved definition using OperationalStatus.None TRANSLATABLE= true
MaxLenuint3210None None
ValueMapstringOK, Error, Degraded, Unknown, Pred Fail, Starting, Stopping, Service, Stressed, NonRecover, No Contact, Lost Comm, StoppedNone None
SystemCreationClassNamestring
DescriptionstringThe scoping System's CreationClassName.None TRANSLATABLE= true
KeybooleantrueNone OVERRIDABLE= false
MaxLenuint32256None None
PropagatedstringCIM_System.CreationClassNameNone OVERRIDABLE= false
SystemNamestring
DescriptionstringThe scoping System's Name.None TRANSLATABLE= true
KeybooleantrueNone OVERRIDABLE= false
MaxLenuint32256None None
PropagatedstringCIM_System.NameNone OVERRIDABLE= false
TimeOfLastStateChangedatetime
DescriptionstringThe date/time when the element's EnabledState last changed. If the state of the element has not changed and this property is populated, then it MUST be set to a 0 interval value. If a state change was requested, but rejected or not yet processed, the property MUST NOT be updated.None TRANSLATABLE= true
Weightreal32
DeprecatedstringCIM_DropThresholdCalculationService.SmoothingWeightTOSUBCLASS= falseNone
DescriptionstringThis is a 32-bit real number that represents the weighting factor used to determine which queues get more service.None TRANSLATABLE= true
MaxValuesint64100None None
MinValuesint640None None
OperationalStatusuint16[]
ArrayTypestringIndexedNone OVERRIDABLE= false
DescriptionstringIndicates the current status(es) of the element. Various health and operational statuses are defined. Many of the enumeration's values are self- explanatory. However, a few are not and are described in more detail. "Stressed" indicates that the element is functioning, but needs attention. Examples of "Stressed" states are overload, overheated, etc. "Predictive Failure" indicates that an element is functioning nominally but predicting a failure in the near future. "In Service" describes an element being configured, maintained, cleaned, or otherwise administered. "No Contact" indicates that the monitoring system has knowledge of this element, but has never been able to establish communications with it. "Lost Communication" indicates that the ManagedSystem Element is known to exist and has been contacted successfully in the past, but is currently unreachable. "Stopped" and "Aborted" are similar, although the former implies a clean and orderly stop, while the latter implies an abrupt stop where the element's state and configuration may need to be updated. "Dormant" indicates that the element is inactive or quiesced. "Supporting Entity in Error" describes that this element may be "OK" but that another element, on which it is dependent, is in error. An example is a network service or endpoint that cannot function due to lower layer networking problems. "Completed" indicates the element has completed its operation. This value should be combined with either OK, Error, or Degraded so that a client can till if the complete operation passed (Completed with OK), and failure (Completed with Error). Completed with Degraded would imply the operation finished, but did not complete OK or report an error. "Power Mode" indicates the element has additional power model information contained in the Associated PowerManagementService association. OperationalStatus replaces the Status property on ManagedSystemElement to provide a consistent approach to enumerations, to address implementation needs for an array property, and to provide a migration path from today's environment to the future. This change was not made earlier since it required the DEPRECATED qualifier. Due to the widespread use of the existing Status property in management applications, it is strongly RECOMMENDED that providers/instrumentation provide BOTH the Status and OperationalStatus properties. Further, the first value of OperationalStatus SHOULD contain the primary status for the element. When instrumented, Status (since it is single-valued) SHOULD also provide the primary status of the element.None TRANSLATABLE= true
ModelCorrespondencestringCIM_ManagedSystemElement.StatusDescriptionsNone None
ValueMapstring0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, .., 0x8000..None None
ValuesstringUnknown, Other, OK, Degraded, Stressed, Predictive Failure, Error, Non-Recoverable Error, Starting, Stopping, Stopped, In Service, No Contact, Lost Communication, Aborted, Dormant, Supporting Entity in Error, Completed, Power Mode, DMTF Reserved, Vendor ReservedNone TRANSLATABLE= true
StatusDescriptionsstring[]
ArrayTypestringIndexedNone OVERRIDABLE= false
DescriptionstringStrings describing the various OperationalStatus array values. For example, if "Stopping" is the value assigned to OperationalStatus, then this property may contain an explanation as to why an object is being stopped. Note that entries in this array are correlated with those at the same array index in OperationalStatus.None TRANSLATABLE= true
ModelCorrespondencestringCIM_ManagedSystemElement.OperationalStatusNone None