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Introduction

The Precision Time Protocol (PTP) is a protocol used to synchronize clocks throughout a computer network. On a local area network, it achieves clock accuracy in the sub-microsecond range, making it suitable for measurement and control systems.

Domains

A domain is an interacting set of clocks that synchronize to one another using PTP. Clocks are assigned to a domain by virtue of the contents of the Subdomain name fields in PTP messages they receive or generate. Domains allow multiple clock distribution systems to share the same communications medium.

N870 Common PTP domainPTP Domain
Cluster 1-c21
Cluster 2-c21
Cluster 3-c21
Cluster 4-c21
Cluster 5-c21
Cluster 6-c21
Cluster 7-c21
N870 Isolated PTPPTP Domain
Cluster 8-i28
Cluster 9-i29
Cluster 10-i30
Cluster 11-i31
Cluster 12-i32
Cluster 13-i33
Cluster 14-i34
Cluster 15-i35
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