PTP encapsulation over UDP over IP—PTP uses UDP as the transport protocol over IP. In both, the unicast and multicast modes, PTP uses UDP ports 319 for event messages and 320 for general messages communication between devices.

Is PTP UDP or TCP?

UDP: Typically, PTP uses UDP as its transport protocol (although other transport protocols are possible). The well known UDP ports for PTP traffic are 319 (Event Message) and 320 (General Message).

What is PTP and how does it work?

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.