| Description | An entry contains aggregate metrics and data relating to the
collection of metrics for a corresponding traffic flow.
The device creates a row in the cfmFlowMetricsTable when a flow
monitor starts monitoring a traffic flow. Likewise, the device
destroys a row in the cfmFlowMetricsTable when the corresponding
flow monitor has ceased monitoring the traffic flow (e.g., when
a traffic flow has timed out). Observe that the device does not
destroy the row unless it has not received packets for the
corresponding flow for an interval of time equal to the flow's
expiration time, thereby giving an EMS/NMS ample time to
retrieve any data relating to the flow. |