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Time Synchronization
From the evaluation team last report: Time Synchronization, Partial Compliance
Total Compliance with proposed solution
The flow records contain both the flow start and the flow end sysUpTime.
The exporter could periodically send an Option Template containing a time synchronization pair composed of a sysUpTime and a unix_msecs (Number of milli seconds since 0000 UTC 1970), taken at the same point in time.
The collecting process could deduce the flow start and flow end UTC time of every single flow record.
PPT Version