This MIB module defines objects that describe the Media
Delivery Index (MDI).  The MDI [RFC4445] measurement describes
the quality indicator of a network intended to delivery
applications such as streaming media, MPEG video, VoIP, or other
information sensitive to arrival time and packet loss.
        
GLOSSARY
============
        
Delay Factor - the maximum observed value of the flow rate
    imbalance over a measurement interval.
        
DF - Delay Factor.
        
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
    traffic flow.
        
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 collected
    data.
        
Media Loss Rate - the number of lost or out-of-order packets
    over a measurement interval.
        
Media Rate - the effective bit rate of the media content carried
by a traffic flow.
        
MLR - Media Loss Rate.
        
MR - Media Rate.
        
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.
        
VB - Virtual Buffer.
        
Virtual Buffer - a virtual buffer is a construct used to
    simulate a real buffer used by a media application for the
    purpose of storing media packets until the application can
    render their content.
        
REFERENCES
==============
        
[RFC4445]   J. Welch and J. Clark, 'A Proposed Media Delivery
            Index (MDI)', RFC-4445, April 2006.