Does PTP require special hardware?

The three main components are: a GPS Grandmaster clock, an Ethernet switch (transparent or boundary clock), and a PTP slave. All components must support hardware timestamping.

What is PTP hardware clock?

The Precision Time Protocol (PTP) is a protocol used to synchronize clocks in a network. When used in conjunction with hardware support, PTP is capable of sub-microsecond accuracy, which is far better than is normally obtainable with NTP . PTP support is divided between the kernel and user space.

What clock accuracy is needed for IEEE 1588?

1 microsecond
Each sensor uses an onboard 1588 clock slaved to a grandmaster clock and is synchronized with the other sensors on the network to an accuracy of 1 microsecond.

How does the IEEE 1588v2 PTP protocol work?

IEEE 1588v2 PTP is a packet-based two-way message ex change protocol for sync hronizing a local clock with a primary reference clock or a grand master clock in hierarchical master-slave architecture. This synchronization is achieved through packets that are transmitted and received in a session between a master clock and a slave clock.

Can a Cisco asr1002-x use IEEE 1588v2 PTP?

IEEE 1588v2 PTP supports these features on a Cisco ASR1002-X Router: Two-step Ordinary clock and Boundary clock. Hardware-assistant PTP implementation to provide sub-300 ns accuracy. PTP operation on all physical onboard Gigabit Ethernet interfaces. Supports built-in Gigabit Ethernet links in two-step clock mode.

Is there a PTP clock socket for Linux?

This patch set introduces support for IEEE 1588 PTP clocks in Linux. Together with the SO_TIMESTAMPING socket options, this presents a standardized method for developing PTP user space programs, synchronizing Linux with external clocks, and using the ancillary features of PTP hardware clocks.

What is the ieee1588 Precision Time Protocol?

IEEE1588 Precision Time Protocol (PTP):A two-way time transfer protocol wherein a Grandmaster clock is synchronized to a high-quality source such as GPS and then generates packets with precise timestamps that are sent downstream to slave devices.