DIFFSERV-MIB Table View

The data path table contains RowPointers indicating the start of
the functional data path for each interface and traffic direction
in this device. These may merge, or be separated into parallel
data paths.

This table enumerates all the diffserv classifier functional
data path elements of this device.  The actual classification
definitions are defined in diffServClfrElementTable entries
belonging to each classifier.
          
An entry in this table, pointed to by a RowPointer specifying an
instance of diffServClfrStatus, is frequently used as the name
for a set of classifier elements, which all use the index
diffServClfrId. Per the semantics of the classifier element
table, these entries constitute one or more unordered sets of
tests which may be simultaneously applied to a message to
          
classify it.
          
The primary function of this table is to ensure that the value of
diffServClfrId is unique before attempting to use it in creating
a diffServClfrElementEntry. Therefore, the diffServClfrEntry must
be created on the same SET as the diffServClfrElementEntry, or
before the diffServClfrElementEntry is created.

The classifier element table enumerates the relationship between
classification patterns and subsequent downstream Differentiated
Services Functional Data Path elements.
diffServClfrElementSpecific points to a filter that specifies the
classification parameters. A classifier may use filter tables of
different types together.
          
One example of a filter table defined in this MIB is
diffServMultiFieldClfrTable, for IP Multi-Field Classifiers
(MFCs). Such an entry might identify anything from a single
micro-flow (an identifiable sub-session packet stream directed
from one sending transport to the receiving transport or
transports), or aggregates of those such as the traffic from a
host, traffic for an application, or traffic between two hosts
using an application and a given DSCP. The standard Behavior
Aggregate used in the Differentiated Services Architecture is
encoded as a degenerate case of such an aggregate - the traffic
using a particular DSCP value.
          
Filter tables for other filter types may be defined elsewhere.

A table of IP Multi-field Classifier filter entries that a
          
system may use to identify IP traffic.

This table enumerates specific meters that a system may use to
police a stream of traffic. The traffic stream to be metered is
determined by the Differentiated Services Functional Data Path
Element(s) upstream of the meter i.e. by the object(s) that point
to each entry in this table.  This may include all traffic on an
interface.
          
Specific meter details are to be found in table entry referenced
by diffServMeterSpecific.

This table enumerates a single set of token bucket meter
parameters that a system may use to police a stream of traffic.
Such meters are modeled here as having a single rate and a single
burst size. Multiple entries are used when multiple rates/burst
sizes are needed.

The Action Table enumerates actions that can be performed to a
stream of traffic. Multiple actions can be concatenated. For
example, traffic exiting from a meter may be counted, marked, and
potentially dropped before entering a queue.
          
Specific actions are indicated by diffServActionSpecific which
points to an entry of a specific action type parameterizing the
action in detail.

This table enumerates specific DSCPs used for marking or
remarking the DSCP field of IP packets. The entries of this table
may be referenced by a diffServActionSpecific attribute.

This table contains counters for all the traffic passing through
an action element.

The algorithmic drop table contains entries describing an
element that drops packets according to some algorithm.

The random drop table contains entries describing a process that
drops packets randomly. Entries in this table are pointed to by
diffServAlgDropSpecific.

The Queue Table enumerates the individual queues.  Note that the
MIB models queuing systems as composed of individual queues, one
per class of traffic, even though they may in fact be structured
as classes of traffic scheduled using a common calendar queue, or
in other ways.

The Scheduler Table enumerates packet schedulers. Multiple
scheduling algorithms can be used on a given data path, with each
algorithm described by one diffServSchedulerEntry.

The Minimum Rate Parameters Table enumerates individual sets of
scheduling parameter that can be used/reused by Queues and
Schedulers.

The Maximum Rate Parameter Table enumerates individual sets of
scheduling parameter that can be used/reused by Queues and
Schedulers.