Boundary Clock: A boundary clock (BC) device has multiple ports in a 1588 clock domain with one slave clock port and possibly more than one master clock port. The BC maintains the same timescale for the slave clock port and possibly multiple master clock ports.

ptp4l is an implementation of the Precision Time Protocol (PTP) according to IEEE standard 1588 for Linux. It implements Boundary Clock (BC), Ordinary Clock (OC), and Transparent Clock (TC). OPTIONS-A. Select the delay mechanism automatically. Start with E2E and switch to P2P when a peer delay request is received.-E

Nov 7, 2023 · Boundary Clocks act as intermediaries within a PTP network. They receive timing information from the Grandmaster Clock and distribute it to other network devices, ensuring time synchronization across multiple domains or network segments.

Boundary clocks and transparent clocks are both mechanisms to provide accurate distribution of the PTP protocol across multi-port network components such as bridges, routers, and repeaters. Applications range from large multi-port Ethernet switches to …

The IEEE 1588v2 standard defines the Precision Time Protocol (PTP), which is used to synchronize clocks throughout a network. The standard describes the PTP boundary clock’s hierarchical primary/client architecture for the distribution of time-of-day.

Oct 21, 2013 · An ordinary clock is a one port device which does not queue messages for transmitting from another port. So as long as the PTP event messages are timestamped at the MII interface in the network stack, accuracy should be good. Boundary clocks recover the PTP domain time on the slave port.

Jun 1, 2023 · IEEE 1588 has always, and still does, refer to certain PTP Port states and clock roles using the terms “master” and “slave.” This never bothered me, but it bothers some people. So from now on in this blog I will use the optional alternative terms …

Boundary Clock (BC) The boundary clock (BC) runs PTP on two or more interfaces. It can synchronize one network segment with another. The upstream interface that connects to the grandmaster clock has the slave role. The downstream interface that connects to …

This document describes the difference between transparent clock and boundary clock, and explains why boundary clock scales better than transparent clock. The first section defines key terms, including precision time protocol (PTP) functionality, ST 2059-1 and ST 2059-2,

Boundary clock (BC) - The boundary clock (BC) runs PTP on two or more interfaces. It can synchronize one network segment with another. The upstream interface that connects to the grandmaster clock has the slave role. The downstream interface that connects to …