About the author: Dr. Douglas Arnold has over 20 years experience developing precise time and frequency equipment and in network time transfer technology. He is currently a Principal Technologist with JTime! Meinberg USA. As part of this role he is a Co-Chair of the IEEE 1588 Working Group, Co-Chair of the IEEE 1588 Architecture Subcommittee, […]
End-to-End Versus Peer-to-Peer
Five Minute Facts About Packet Timing By Doug Arnold. Which delay measurement mechanism is best for deploying IEEE 1588? Since I’m an engineer, the answer is, of course, it depends. The short answer is that the peer-to-peer delay measurement mechanism is best in an engineered network, where all switches (and routers if there are […]
Why is IEEE 1588 so accurate?
Five Minute Facts About Packet Timing By Doug Arnold Why is IEEE 1588 so accurate? Two words: Hardware timestamping. That’s it, really! Let me explain. The Precision Time Protocol, PTP, defined by IEEE 1588-2008 works by exchanging messages between master clocks and slave clocks.