This table contains aggregate data maintained by a flow
monitor for traffic flows for which it is computing MDI
metrics.
This table has an sparse dependent relationship on the
cfmFlowMetricsTable (defined by the CISCO-FLOW-MONITOR-MIB),
containing a row for each row in the cfmFlowMetricsTable having
a corresponding instance of cfmFlowMetricsCollected with the
'mdi' bit set to one.