Converted from YANG file 'DIFFSERV-MIB.yang' by yangdump version 1.13.896 Module: DIFFSERV-MIB Organization: IETF Differentiated Services WG Version: 2002-02-07 Contact: Fred Baker Cisco Systems 1121 Via Del Rey Santa Barbara, CA 93117, USA E-mail: fred@cisco.com Kwok Ho Chan Nortel Networks 600 Technology Park Drive Billerica, MA 01821, USA E-mail: khchan@nortelnetworks.com Andrew Smith Harbour Networks Jiuling Building 21 North Xisanhuan Ave. Beijing, 100089, PRC E-mail: ah_smith@acm.org Differentiated Services Working Group: diffserv@ietf.org This MIB defines the objects necessary to manage a device that uses the Differentiated Services Architecture described in RFC 2475. The Conceptual Model of a Differentiated Services Router provides supporting information on how such a router is modeled. /usr/share/yuma/modules/ietf/DIFFSERV-MIB.yang IETF Differentiated Services WG Fred Baker Cisco Systems 1121 Via Del Rey Santa Barbara, CA 93117, USA E-mail: fred@cisco.com Kwok Ho Chan Nortel Networks 600 Technology Park Drive Billerica, MA 01821, USA E-mail: khchan@nortelnetworks.com Andrew Smith Harbour Networks Jiuling Building 21 North Xisanhuan Ave. Beijing, 100089, PRC E-mail: ah_smith@acm.org Differentiated Services Working Group: diffserv@ietf.org 2002-02-07 Initial version, published as RFC 3289. An integer which may be used as a table index. An integer which may be used as a new Index in a table. The special value of 0 indicates that no more new entries can be created in the relevant table. When a MIB is used for configuration, an object with this SYNTAX always contains a legal value (if non-zero) for an index that is not currently used in the relevant table. The Command Generator (Network Management Application) reads this variable and uses the (non-zero) value read when creating a new row with an SNMP SET. When the SET is performed, the Command Responder (agent) must determine whether the value is indeed still unused; Two Network Management Applications may attempt to create a row (configuration entry) simultaneously and use the same value. If it is currently unused, the SET succeeds and the Command Responder (agent) changes the value of this object, according to an implementation-specific algorithm. If the value is in use, however, the SET fails. The Network Management Application must then re-read this variable to obtain a new usable value. An OBJECT-TYPE definition using this SYNTAX MUST specify the relevant table for which the object is providing this functionality. IfDirection specifies a direction of data travel on an interface. 'inbound' traffic is operated on during reception from the interface, while 'outbound' traffic is operated on prior to transmission on the interface. 1 2 true An entry in the data path table indicates the start of a single Differentiated Services Functional Data Path in this device. These are associated with individual interfaces, logical or physical, and therefore are instantiated by ifIndex. Therefore, the interface index must have been assigned, according to the procedures applicable to that, before it can be meaningfully used. Generally, this means that the interface must exist. When diffServDataPathStorage is of type nonVolatile, however, this may reflect the configuration for an interface whose ifIndex has been assigned but for which the supporting implementation is not currently present. system Automagically generated leafref leaf. IfDirection specifies whether the reception or transmission path for this interface is in view. This selects the first Differentiated Services Functional Data Path Element to handle traffic for this data path. This RowPointer should point to an instance of one of: diffServClfrEntry diffServMeterEntry diffServActionEntry diffServAlgDropEntry diffServQEntry A value of zeroDotZero in this attribute indicates that no Differentiated Services treatment is performed on traffic of this data path. A pointer with the value zeroDotZero normally terminates a functional data path. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the treatment is as if this attribute contains a value of zeroDotZero. true The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row. true The status of this conceptual row. All writable objects in this row may be modified at any time. true true This object contains an unused value for diffServClfrId, or a zero to indicate that none exist. false An entry in the classifier table describes a single classifier. All classifier elements belonging to the same classifier use the classifier's diffServClfrId as part of their index. system An index that enumerates the classifier entries. Managers should obtain new values for row creation in this table by reading diffServClfrNextFree. The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row. true The status of this conceptual row. All writable objects in this row may be modified at any time. Setting this variable to 'destroy' when the MIB contains one or more RowPointers pointing to it results in destruction being delayed until the row is no longer used. true This object contains an unused value for diffServClfrElementId, or a zero to indicate that none exist. false An entry in the classifier element table describes a single element of the classifier. system Automagically generated leafref leaf. true An index that enumerates the Classifier Element entries. Managers obtain new values for row creation in this table by reading diffServClfrElementNextFree. The relative order in which classifier elements are applied: higher numbers represent classifier element with higher precedence. Classifier elements with the same order must be unambiguous i.e. they must define non-overlapping patterns, and are considered to be applied simultaneously to the traffic stream. Classifier elements with different order may overlap in their filters: the classifier element with the highest order that matches is taken. On a given interface, there must be a complete classifier in place at all times in the ingress direction. This means one or more filters must match any possible pattern. There is no such requirement in the egress direction. true This attribute provides one branch of the fan-out functionality of a classifier described in the Informal Differentiated Services Model section 4.1. This selects the next Differentiated Services Functional Data Path Element to handle traffic for this data path. This RowPointer should point to an instance of one of: diffServClfrEntry diffServMeterEntry diffServActionEntry diffServAlgDropEntry diffServQEntry A value of zeroDotZero in this attribute indicates no further Differentiated Services treatment is performed on traffic of this data path. The use of zeroDotZero is the normal usage for the last functional data path element of the current data path. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the treatment is as if this attribute contains a value of zeroDotZero. true A pointer to a valid entry in another table, filter table, that describes the applicable classification parameters, e.g. an entry in diffServMultiFieldClfrTable. The value zeroDotZero is interpreted to match anything not matched by another classifier element - only one such entry may exist for each classifier. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the element is ignored. true The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row. true The status of this conceptual row. All writable objects in this row may be modified at any time. Setting this variable to 'destroy' when the MIB contains one or more RowPointers pointing to it results in destruction being delayed until the row is no longer used. true This object contains an unused value for diffServMultiFieldClfrId, or a zero to indicate that none exist. false An IP Multi-field Classifier entry describes a single filter. system An index that enumerates the MultiField Classifier filter entries. Managers obtain new values for row creation in this table by reading diffServMultiFieldClfrNextFree. The type of IP address used by this classifier entry. While other types of addresses are defined in the InetAddressType textual convention, and DNS names, a classifier can only look at packets on the wire. Therefore, this object is limited to IPv4 and IPv6 addresses. true The IP address to match against the packet's destination IP address. This may not be a DNS name, but may be an IPv4 or IPv6 prefix. diffServMultiFieldClfrDstPrefixLength indicates the number of bits that are relevant. true The length of the CIDR Prefix carried in diffServMultiFieldClfrDstAddr. In IPv4 addresses, a length of 0 indicates a match of any address; a length of 32 indicates a match of a single host address, and a length between 0 and 32 indicates the use of a CIDR Prefix. IPv6 is similar, except that prefix lengths range from 0..128. true bits The IP address to match against the packet's source IP address. This may not be a DNS name, but may be an IPv4 or IPv6 prefix. diffServMultiFieldClfrSrcPrefixLength indicates the number of bits that are relevant. true The length of the CIDR Prefix carried in diffServMultiFieldClfrSrcAddr. In IPv4 addresses, a length of 0 indicates a match of any address; a length of 32 indicates a match of a single host address, and a length between 0 and 32 indicates the use of a CIDR Prefix. IPv6 is similar, except that prefix lengths range from 0..128. true bits The value that the DSCP in the packet must have to match this entry. A value of -1 indicates that a specific DSCP value has not been defined and thus all DSCP values are considered a match. true The flow identifier in an IPv6 header. true The IP protocol to match against the IPv4 protocol number or the IPv6 Next- Header number in the packet. A value of 255 means match all. Note the protocol number of 255 is reserved by IANA, and Next-Header number of 0 is used in IPv6. true The minimum value that the layer-4 destination port number in the packet must have in order to match this classifier entry. true The maximum value that the layer-4 destination port number in the packet must have in order to match this classifier entry. This value must be equal to or greater than the value specified for this entry in diffServMultiFieldClfrDstL4PortMin. true The minimum value that the layer-4 source port number in the packet must have in order to match this classifier entry. true The maximum value that the layer-4 source port number in the packet must have in order to match this classifier entry. This value must be equal to or greater than the value specified for this entry in diffServMultiFieldClfrSrcL4PortMin. true The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row. true The status of this conceptual row. All writable objects in this row may be modified at any time. Setting this variable to 'destroy' when the MIB contains one or more RowPointers pointing to it results in destruction being delayed until the row is no longer used. true true This object contains an unused value for diffServMeterId, or a zero to indicate that none exist. false An entry in the meter table describes a single conformance level of a meter. system An index that enumerates the Meter entries. Managers obtain new values for row creation in this table by reading diffServMeterNextFree. If the traffic does conform, this selects the next Differentiated Services Functional Data Path element to handle traffic for this data path. This RowPointer should point to an instance of one of: diffServClfrEntry diffServMeterEntry diffServActionEntry diffServAlgDropEntry diffServQEntry A value of zeroDotZero in this attribute indicates that no further Differentiated Services treatment is performed on traffic of this data path. The use of zeroDotZero is the normal usage for the last functional data path element of the current data path. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the treatment is as if this attribute contains a value of zeroDotZero. true If the traffic does not conform, this selects the next Differentiated Services Functional Data Path element to handle traffic for this data path. This RowPointer should point to an instance of one of: diffServClfrEntry diffServMeterEntry diffServActionEntry diffServAlgDropEntry diffServQEntry A value of zeroDotZero in this attribute indicates no further Differentiated Services treatment is performed on traffic of this data path. The use of zeroDotZero is the normal usage for the last functional data path element of the current data path. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the treatment is as if this attribute contains a value of zeroDotZero. true This indicates the behavior of the meter by pointing to an entry containing detailed parameters. Note that entries in that specific table must be managed explicitly. For example, diffServMeterSpecific may point to an entry in diffServTBParamTable, which contains an instance of a single set of Token Bucket parameters. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the meter always succeeds. true The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row. true The status of this conceptual row. All writable objects in this row may be modified at any time. Setting this variable to 'destroy' when the MIB contains one or more RowPointers pointing to it results in destruction being delayed until the row is no longer used. true true This object contains an unused value for diffServTBParamId, or a zero to indicate that none exist. false An entry that describes a single set of token bucket parameters. system An index that enumerates the Token Bucket Parameter entries. Managers obtain new values for row creation in this table by reading diffServTBParamNextFree. The Metering algorithm associated with the Token Bucket parameters. zeroDotZero indicates this is unknown. Standard values for generic algorithms: diffServTBParamSimpleTokenBucket, diffServTBParamAvgRate, diffServTBParamSrTCMBlind, diffServTBParamSrTCMAware, diffServTBParamTrTCMBlind, diffServTBParamTrTCMAware, and diffServTBParamTswTCM are specified in this MIB as OBJECT- IDENTITYs; additional values may be further specified in other MIBs. true The token-bucket rate, in kilobits per second (kbps). This attribute is used for: 1. CIR in RFC 2697 for srTCM 2. CIR and PIR in RFC 2698 for trTCM 3. CTR and PTR in RFC 2859 for TSWTCM 4. AverageRate in RFC 3290. true kilobits per second The maximum number of bytes in a single transmission burst. This attribute is used for: 1. CBS and EBS in RFC 2697 for srTCM 2. CBS and PBS in RFC 2698 for trTCM 3. Burst Size in RFC 3290. true Bytes The time interval used with the token bucket. For: 1. Average Rate Meter, the Informal Differentiated Services Model section 5.2.1, - Delta. 2. Simple Token Bucket Meter, the Informal Differentiated Services Model section 5.1, - time interval t. 3. RFC 2859 TSWTCM, - AVG_INTERVAL. 4. RFC 2697 srTCM, RFC 2698 trTCM, - token bucket update time interval. true microseconds The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row. true The status of this conceptual row. All writable objects in this row may be modified at any time. Setting this variable to 'destroy' when the MIB contains one or more RowPointers pointing to it results in destruction being delayed until the row is no longer used. true true This object contains an unused value for diffServActionId, or a zero to indicate that none exist. false Each entry in the action table allows description of one specific action to be applied to traffic. system An index that enumerates the Action entries. Managers obtain new values for row creation in this table by reading diffServActionNextFree. The interface index (value of ifIndex) that this action occurs on. This may be derived from the diffServDataPathStartEntry's index by extension through the various RowPointers. However, as this may be difficult for a network management station, it is placed here as well. If this is indeterminate, the value is zero. This is of especial relevance when reporting the counters which may apply to traffic crossing an interface: diffServCountActOctets, diffServCountActPkts, diffServAlgDropOctets, diffServAlgDropPkts, diffServAlgRandomDropOctets, and diffServAlgRandomDropPkts. It is also especially relevant to the queue and scheduler which may be subsequently applied. true This selects the next Differentiated Services Functional Data Path Element to handle traffic for this data path. This RowPointer should point to an instance of one of: diffServClfrEntry diffServMeterEntry diffServActionEntry diffServAlgDropEntry diffServQEntry A value of zeroDotZero in this attribute indicates no further Differentiated Services treatment is performed on traffic of this data path. The use of zeroDotZero is the normal usage for the last functional data path element of the current data path. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the treatment is as if this attribute contains a value of zeroDotZero. true A pointer to an object instance providing additional information for the type of action indicated by this action table entry. For the standard actions defined by this MIB module, this should point to either a diffServDscpMarkActEntry or a diffServCountActEntry. For other actions, it may point to an object instance defined in some other MIB. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the Meter should be treated as if it were not present. This may lead to incorrect policy behavior. true The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row. true The status of this conceptual row. All writable objects in this row may be modified at any time. Setting this variable to 'destroy' when the MIB contains one or more RowPointers pointing to it results in destruction being delayed until the row is no longer used. true An entry in the DSCP mark action table that describes a single DSCP used for marking. system The DSCP that this Action will store into the DSCP field of the subject. It is quite possible that the only packets subject to this Action are already marked with this DSCP. Note also that Differentiated Services processing may result in packet being marked on both ingress to a network and on egress from it, and that ingress and egress can occur in the same router. This object contains an unused value for diffServCountActId, or a zero to indicate that none exist. false An entry in the count action table describes a single set of traffic counters. system An index that enumerates the Count Action entries. Managers obtain new values for row creation in this table by reading diffServCountActNextFree. The number of octets at the Action data path element. Discontinuities in the value of this counter can occur at re- initialization of the management system and at other times as indicated by the value of ifCounterDiscontinuityTime on the relevant interface. false The number of packets at the Action data path element. Discontinuities in the value of this counter can occur at re- initialization of the management system and at other times as indicated by the value of ifCounterDiscontinuityTime on the relevant interface. false The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row. true The status of this conceptual row. All writable objects in this row may be modified at any time. Setting this variable to 'destroy' when the MIB contains one or more RowPointers pointing to it results in destruction being delayed until the row is no longer used. true true This object contains an unused value for diffServAlgDropId, or a zero to indicate that none exist. false An entry describes a process that drops packets according to some algorithm. Further details of the algorithm type are to be found in diffServAlgDropType and with more detail parameter entry pointed to by diffServAlgDropSpecific when necessary. system An index that enumerates the Algorithmic Dropper entries. Managers obtain new values for row creation in this table by reading diffServAlgDropNextFree. The type of algorithm used by this dropper. The value other(1) requires further specification in some other MIB module. In the tailDrop(2) algorithm, diffServAlgDropQThreshold represents the maximum depth of the queue, pointed to by diffServAlgDropQMeasure, beyond which all newly arriving packets will be dropped. In the headDrop(3) algorithm, if a packet arrives when the current depth of the queue, pointed to by diffServAlgDropQMeasure, is at diffServAlgDropQThreshold, packets currently at the head of the queue are dropped to make room for the new packet to be enqueued at the tail of the queue. In the randomDrop(4) algorithm, on packet arrival, an Active Queue Management algorithm is executed which may randomly drop a packet. This algorithm may be proprietary, and it may drop either the arriving packet or another packet in the queue. diffServAlgDropSpecific points to a diffServRandomDropEntry that describes the algorithm. For this algorithm, diffServAlgDropQThreshold is understood to be the absolute maximum size of the queue and additional parameters are described in diffServRandomDropTable. The alwaysDrop(5) algorithm is as its name specifies; always drop. In this case, the other configuration values in this Entry are not meaningful; There is no useful 'next' processing step, there is no queue, and parameters describing the queue are not useful. Therefore, diffServAlgDropNext, diffServAlgDropMeasure, and diffServAlgDropSpecific are all zeroDotZero. true 1 2 3 4 5 This selects the next Differentiated Services Functional Data Path Element to handle traffic for this data path. This RowPointer should point to an instance of one of: diffServClfrEntry diffServMeterEntry diffServActionEntry diffServQEntry A value of zeroDotZero in this attribute indicates no further Differentiated Services treatment is performed on traffic of this data path. The use of zeroDotZero is the normal usage for the last functional data path element of the current data path. When diffServAlgDropType is alwaysDrop(5), this object is ignored. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the treatment is as if this attribute contains a value of zeroDotZero. true Points to an entry in the diffServQTable to indicate the queue that a drop algorithm is to monitor when deciding whether to drop a packet. If the row pointed to does not exist, the algorithmic dropper element is considered inactive. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the treatment is as if this attribute contains a value of zeroDotZero. true A threshold on the depth in bytes of the queue being measured at which a trigger is generated to the dropping algorithm, unless diffServAlgDropType is alwaysDrop(5) where this object is ignored. For the tailDrop(2) or headDrop(3) algorithms, this represents the depth of the queue, pointed to by diffServAlgDropQMeasure, at which the drop action will take place. Other algorithms will need to define their own semantics for this threshold. true Bytes Points to a table entry that provides further detail regarding a drop algorithm. Entries with diffServAlgDropType equal to other(1) may have this point to a table defined in another MIB module. Entries with diffServAlgDropType equal to randomDrop(4) must have this point to an entry in diffServRandomDropTable. For all other algorithms specified in this MIB, this should take the value zeroDotZero. The diffServAlgDropType is authoritative for the type of the drop algorithm and the specific parameters for the drop algorithm needs to be evaluated based on the diffServAlgDropType. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the treatment is as if this attribute contains a value of zeroDotZero. true The number of octets that have been deterministically dropped by this drop process. Discontinuities in the value of this counter can occur at re- initialization of the management system and at other times as indicated by the value of ifCounterDiscontinuityTime on the relevant interface. false The number of packets that have been deterministically dropped by this drop process. Discontinuities in the value of this counter can occur at re- initialization of the management system and at other times as indicated by the value of ifCounterDiscontinuityTime on the relevant interface. false The number of octets that have been randomly dropped by this drop process. This counter applies, therefore, only to random droppers. Discontinuities in the value of this counter can occur at re- initialization of the management system and at other times as indicated by the value of ifCounterDiscontinuityTime on the relevant interface. false The number of packets that have been randomly dropped by this drop process. This counter applies, therefore, only to random droppers. Discontinuities in the value of this counter can occur at re- initialization of the management system and at other times as indicated by the value of ifCounterDiscontinuityTime on the relevant interface. false The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row. true The status of this conceptual row. All writable objects in this row may be modified at any time. Setting this variable to 'destroy' when the MIB contains one or more RowPointers pointing to it results in destruction being delayed until the row is no longer used. true This object contains an unused value for diffServRandomDropId, or a zero to indicate that none exist. false An entry describes a process that drops packets according to a random algorithm. system An index that enumerates the Random Drop entries. Managers obtain new values for row creation in this table by reading diffServRandomDropNextFree. The average queue depth in bytes, beyond which traffic has a non-zero probability of being dropped. Changes in this variable may or may not be reflected in the reported value of diffServRandomDropMinThreshPkts. true bytes The average queue depth in packets, beyond which traffic has a non-zero probability of being dropped. Changes in this variable may or may not be reflected in the reported value of diffServRandomDropMinThreshBytes. true packets The average queue depth beyond which traffic has a probability indicated by diffServRandomDropProbMax of being dropped or marked. Note that this differs from the physical queue limit, which is stored in diffServAlgDropQThreshold. Changes in this variable may or may not be reflected in the reported value of diffServRandomDropMaxThreshPkts. true bytes The average queue depth beyond which traffic has a probability indicated by diffServRandomDropProbMax of being dropped or marked. Note that this differs from the physical queue limit, which is stored in diffServAlgDropQThreshold. Changes in this variable may or may not be reflected in the reported value of diffServRandomDropMaxThreshBytes. true packets The worst case random drop probability, expressed in drops per thousand packets. For example, if in the worst case every arriving packet may be dropped (100%) for a period, this has the value 1000. Alternatively, if in the worst case only one percent (1%) of traffic may be dropped, it has the value 10. true The weighting of past history in affecting the Exponentially Weighted Moving Average function that calculates the current average queue depth. The equation uses diffServRandomDropWeight/65536 as the coefficient for the new sample in the equation, and (65536 - diffServRandomDropWeight)/65536 as the coefficient of the old value. Implementations may limit the values of diffServRandomDropWeight to a subset of the possible range of values, such as powers of two. Doing this would facilitate implementation of the Exponentially Weighted Moving Average using shift instructions or registers. true The number of times per second the queue is sampled for queue average calculation. A value of zero is used to mean that the queue is sampled approximately each time a packet is enqueued (or dequeued). true The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row. true The status of this conceptual row. All writable objects in this row may be modified at any time. Setting this variable to 'destroy' when the MIB contains one or more RowPointers pointing to it results in destruction being delayed until the row is no longer used. true true This object contains an unused value for diffServQId, or a zero to indicate that none exist. false An entry in the Queue Table describes a single queue or class of traffic. system An index that enumerates the Queue entries. Managers obtain new values for row creation in this table by reading diffServQNextFree. This selects the next Differentiated Services Scheduler. The RowPointer must point to a diffServSchedulerEntry. A value of zeroDotZero in this attribute indicates an incomplete diffServQEntry instance. In such a case, the entry has no operational effect, since it has no parameters to give it meaning. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the treatment is as if this attribute contains a value of zeroDotZero. true This RowPointer indicates the diffServMinRateEntry that the scheduler, pointed to by diffServQNext, should use to service this queue. If the row pointed to is zeroDotZero, the minimum rate and priority is unspecified. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the treatment is as if this attribute contains a value of zeroDotZero. true This RowPointer indicates the diffServMaxRateEntry that the scheduler, pointed to by diffServQNext, should use to service this queue. If the row pointed to is zeroDotZero, the maximum rate is the line speed of the interface. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the treatment is as if this attribute contains a value of zeroDotZero. true The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row. true The status of this conceptual row. All writable objects in this row may be modified at any time. Setting this variable to 'destroy' when the MIB contains one or more RowPointers pointing to it results in destruction being delayed until the row is no longer used. true true This object contains an unused value for diffServSchedulerId, or a zero to indicate that none exist. false An entry in the Scheduler Table describing a single instance of a scheduling algorithm. system An index that enumerates the Scheduler entries. Managers obtain new values for row creation in this table by reading diffServSchedulerNextFree. This selects the next Differentiated Services Functional Data Path Element to handle traffic for this data path. This normally is null (zeroDotZero), or points to a diffServSchedulerEntry or a diffServQEntry. However, this RowPointer may also point to an instance of: diffServClfrEntry, diffServMeterEntry, diffServActionEntry, diffServAlgDropEntry. It would point another diffServSchedulerEntry when implementing multiple scheduler methods for the same data path, such as having one set of queues scheduled by WRR and that group participating in a priority scheduling system in which other queues compete with it in that way. It might also point to a second scheduler in a hierarchical scheduling system. If the row pointed to is zeroDotZero, no further Differentiated Services treatment is performed on traffic of this data path. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the treatment is as if this attribute contains a value of zeroDotZero. true The scheduling algorithm used by this Scheduler. zeroDotZero indicates that this is unknown. Standard values for generic algorithms: diffServSchedulerPriority, diffServSchedulerWRR, and diffServSchedulerWFQ are specified in this MIB; additional values may be further specified in other MIBs. true This RowPointer indicates the entry in diffServMinRateTable which indicates the priority or minimum output rate from this scheduler. This attribute is used only when there is more than one level of scheduler. When it has the value zeroDotZero, it indicates that no minimum rate or priority is imposed. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the treatment is as if this attribute contains a value of zeroDotZero. true This RowPointer indicates the entry in diffServMaxRateTable which indicates the maximum output rate from this scheduler. When more than one maximum rate applies (eg, when a multi-rate shaper is in view), it points to the first of those rate entries. This attribute is used only when there is more than one level of scheduler. When it has the value zeroDotZero, it indicates that no maximum rate is imposed. Setting this to point to a target that does not exist results in an inconsistentValue error. If the row pointed to is removed or becomes inactive by other means, the treatment is as if this attribute contains a value of zeroDotZero. true The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row. true The status of this conceptual row. All writable objects in this row may be modified at any time. Setting this variable to 'destroy' when the MIB contains one or more RowPointers pointing to it results in destruction being delayed until the row is no longer used. true This object contains an unused value for diffServMinRateId, or a zero to indicate that none exist. false An entry in the Minimum Rate Parameters Table describes a single set of scheduling parameters for use by one or more queues or schedulers. system An index that enumerates the Scheduler Parameter entries. Managers obtain new values for row creation in this table by reading diffServMinRateNextFree. The priority of this input to the associated scheduler, relative to the scheduler's other inputs. A queue or scheduler with a larger numeric value will be served before another with a smaller numeric value. true The minimum absolute rate, in kilobits/sec, that a downstream scheduler element should allocate to this queue. If the value is zero, then there is effectively no minimum rate guarantee. If the value is non-zero, the scheduler will assure the servicing of this queue to at least this rate. Note that this attribute value and that of diffServMinRateRelative are coupled: changes to one will affect the value of the other. They are linked by the following equation, in that setting one will change the other: diffServMinRateRelative = (diffServMinRateAbsolute*1000000)/ifSpeed or, if appropriate: diffServMinRateRelative = diffServMinRateAbsolute/ifHighSpeed ifSpeed, ifHighSpeed, Interface MIB, RFC 2863 true kilobits per second The minimum rate that a downstream scheduler element should allocate to this queue, relative to the maximum rate of the interface as reported by ifSpeed or ifHighSpeed, in units of 1/1000 of 1. If the value is zero, then there is effectively no minimum rate guarantee. If the value is non-zero, the scheduler will assure the servicing of this queue to at least this rate. Note that this attribute value and that of diffServMinRateAbsolute are coupled: changes to one will affect the value of the other. They are linked by the following equation, in that setting one will change the other: diffServMinRateRelative = (diffServMinRateAbsolute*1000000)/ifSpeed or, if appropriate: diffServMinRateRelative = diffServMinRateAbsolute/ifHighSpeed ifSpeed, ifHighSpeed, Interface MIB, RFC 2863 true The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row. true The status of this conceptual row. All writable objects in this row may be modified at any time. Setting this variable to 'destroy' when the MIB contains one or more RowPointers pointing to it results in destruction being delayed until the row is no longer used. true This object contains an unused value for diffServMaxRateId, or a zero to indicate that none exist. false An entry in the Maximum Rate Parameter Table describes a single set of scheduling parameters for use by one or more queues or schedulers. system An index that enumerates the Maximum Rate Parameter entries. Managers obtain new values for row creation in this table by reading diffServMaxRateNextFree. An index that indicates which level of a multi-rate shaper is being given its parameters. A multi-rate shaper has some number of rate levels. Frame Relay's dual rate specification refers to a 'committed' and an 'excess' rate; ATM's dual rate specification refers to a 'mean' and a 'peak' rate. This table is generalized to support an arbitrary number of rates. The committed or mean rate is level 1, the peak rate (if any) is the highest level rate configured, and if there are other rates they are distributed in monotonically increasing order between them. The maximum rate in kilobits/sec that a downstream scheduler element should allocate to this queue. If the value is zero, then there is effectively no maximum rate limit and that the scheduler should attempt to be work conserving for this queue. If the value is non-zero, the scheduler will limit the servicing of this queue to, at most, this rate in a non-work-conserving manner. Note that this attribute value and that of diffServMaxRateRelative are coupled: changes to one will affect the value of the other. They are linked by the following equation, in that setting one will change the other: diffServMaxRateRelative = (diffServMaxRateAbsolute*1000000)/ifSpeed or, if appropriate: diffServMaxRateRelative = diffServMaxRateAbsolute/ifHighSpeed ifSpeed, ifHighSpeed, Interface MIB, RFC 2863 true kilobits per second The maximum rate that a downstream scheduler element should allocate to this queue, relative to the maximum rate of the interface as reported by ifSpeed or ifHighSpeed, in units of 1/1000 of 1. If the value is zero, then there is effectively no maximum rate limit and the scheduler should attempt to be work conserving for this queue. If the value is non-zero, the scheduler will limit the servicing of this queue to, at most, this rate in a non-work-conserving manner. Note that this attribute value and that of diffServMaxRateAbsolute are coupled: changes to one will affect the value of the other. They are linked by the following equation, in that setting one will change the other: diffServMaxRateRelative = (diffServMaxRateAbsolute*1000000)/ifSpeed or, if appropriate: diffServMaxRateRelative = diffServMaxRateAbsolute/ifHighSpeed ifSpeed, ifHighSpeed, Interface MIB, RFC 2863 true The number of bytes of queue depth at which the rate of a multi-rate scheduler will increase to the next output rate. In the last conceptual row for such a shaper, this threshold is ignored and by convention is zero. Adaptive rate Shaper, RFC 2963 true Bytes The storage type for this conceptual row. Conceptual rows having the value 'permanent' need not allow write-access to any columnar objects in the row. true The status of this conceptual row. All writable objects in this row may be modified at any time. Setting this variable to 'destroy' when the MIB contains one or more RowPointers pointing to it results in destruction being delayed until the row is no longer used. true