|This MIB module defines objects that describe the quality
metrics of Media streams.
Flow Monitor - a hardware or software entity that classifies
traffic flows, collects flow data, and periodically
computes flow metrics.
Flow Metric - a measurement that reflects the quality of a
Measurement Interval - the length of time over which a flow
monitor collects data related to a traffic flow, after
which the flow monitor computes flow metrics using the
Traffic Flow - a unidirectional stream of packets conforming to
a classifier. For example, packets having a particular
source IP address, destination IP address, protocol type,
source port number, and destination port number.
Traffic Flow Stream - when the monitor identifies multiple
individual traffic flows based on the flow classificiation,
the monitor aggregates the flows and represents them as a
single entry in the cfmFlowTable. The individual traffic
flows contributing to the metrics are called as individual
traffic flow stream. The metrics for the traffic flow with
multiple streams contributing, are determined either by
aggregating metrics of all individual streams, for example,
cumulative bit rate is computed by cumulative bits of all
streams divided by total duration, or by selecting the
metric for one of the individual stream, for example,
maximum bit rate of an individual stream.