Customer Service Center
Spirent KB Article
Doc ID: FAQ17008
Email Article Link
Spirent TestCenter: What causes the 1588v2 Clock Sync Results "Invalid Timestamp" counter to increment?
v4.54, v4.53, 4.69
The counter is incremented when a sync or follow up is received with a timestamp that was older than the last timestamp received.
Product : Spirent TestCenter,IEEE 1588