Description: 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.