diffServAlgDropType

DIFFSERV-MIB · .1.3.6.1.2.1.97.1.6.2.1.2

Object

column r/w Enumeration

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.

Context

MIB: DIFFSERV-MIB
OID: .1.3.6.1.2.1.97.1.6.2.1.2
Type: column
Access: readwrite
Status: current
Parent: diffServAlgDropEntry
Table: diffServAlgDropTable
Siblings: 11

Syntax

Enumeration

Values & Constraints

Enumerated Values

`1`	other
`2`	tailDrop
`3`	headDrop
`4`	randomDrop
`5`	alwaysDrop

Related Objects

Sibling Objects

Object	Type	Syntax	OID
diffServAlgDropId An index that enumerates the Algorithmic Dropper entries. Managers obtain new values for row creation in this table by reading diffServAlgDropNextFree.	column	IndexInteger	`.1.3.6.1.2.1.97.1.6.2.1.1`
diffServAlgRandomDropPkts 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 o…	column	SNMPv2-SMICounter64	`.1.3.6.1.2.1.97.1.6.2.1.10`
diffServAlgDropStorage 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.	column	SNMPv2-TCStorageType	`.1.3.6.1.2.1.97.1.6.2.1.11`
diffServAlgDropStatus 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 p…	column	SNMPv2-TCRowStatus	`.1.3.6.1.2.1.97.1.6.2.1.12`
diffServAlgDropNext 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: diffServC…	column	SNMPv2-TCRowPointer	`.1.3.6.1.2.1.97.1.6.2.1.3`
diffServAlgDropQMeasure 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, th…	column	SNMPv2-TCRowPointer	`.1.3.6.1.2.1.97.1.6.2.1.4`
diffServAlgDropQThreshold 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 obj…	column	Bytes Unsigned32	`.1.3.6.1.2.1.97.1.6.2.1.5`
diffServAlgDropSpecific 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 d…	column	SNMPv2-TCRowPointer	`.1.3.6.1.2.1.97.1.6.2.1.6`
diffServAlgDropOctets 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 …	column	SNMPv2-SMICounter64	`.1.3.6.1.2.1.97.1.6.2.1.7`
diffServAlgDropPkts 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…	column	SNMPv2-SMICounter64	`.1.3.6.1.2.1.97.1.6.2.1.8`
diffServAlgRandomDropOctets 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 o…	column	SNMPv2-SMICounter64	`.1.3.6.1.2.1.97.1.6.2.1.9`