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Mar 25, 2022 6:49 PM UTC
Solved

Why does the mean path delay vary so much from one sample to the next?

Why does the mean path delay vary so much from one sample to the next? Does this suggest network congestion or path asymmetry?

Answer
Mar 25, 2022 6:49 PM UTC

The Precision Time service is provided over Equinix Fabric, which is a "non-PTP aware" network. Jitter conditions can keep changing on the Fabric. Therefore, you might see a mean path delay that varies a lot, compared to when you connect through a non-Fabric network.

1 reply

Answer
Mar 25, 2022 6:49 PM UTC

The Precision Time service is provided over Equinix Fabric, which is a "non-PTP aware" network. Jitter conditions can keep changing on the Fabric. Therefore, you might see a mean path delay that varies a lot, compared to when you connect through a non-Fabric network.