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Overview
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This MIB provides read access to Quality of Service (QoS) 
configuration and statistics information for Arista 
platforms.

Configuration information available through this MIB includes
all class-map, policy-map, and service-policy parameters.  The
definitions of these object types are given below.

Statistics available through this MIB include dropped, sent and
matched packet counters per traffic class after any configured
QoS policies are applied and per chip ECN counters if supported.

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Definitions
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Class map - A data structure that uses access-control lists
to define a data stream.

Policy map - A data structure that associates class maps identifying 
specific data streams with actions that control its transmission.

Action - A traffic-management action that is applied to traffic
classified as belonging to a particular class. Actions may include
modifying CoS or DSCP fields, assigning to traffic-class queues,
shaping, or filtering.