Active interface delay tests retain 50 sample windows and 20 aggregate sample windows in history. The current measurement windows and historical results are not maintained across CPM switchovers. The delay measurement last reported is maintained after a CPM switchover to retain the baseline. The interface does not enter the first reporting phase following a CPM switchover.
Several states exist to indicate the state of the measurement window:
- InProgress
- The measurement window is open and collecting results.
- Completed
- This state indicates natural completion of the delay test.
- Terminated
- A configuration change to the measurement template being referenced, or an
administrative action or system event caused the operational state to change to
down, consequently preempting and causing an abnormal termination.
- SwReported
- The sample window has triggered a delay measurement last report.
- AswReported
- The aggregate sample window has triggered a delay measurement last report.