On Mon, May 20, 2019 at 12:31:07PM -0400, Sanjay Bhandari wrote: > > With the *-a* option, the clocks to synchronize are fetched from the > running *ptp4l* daemon and the direction of synchronization automatically > follows changes of the PTP port states. > > Is this talking about multiple PTP ports (clocks)?
Yes. > Is it saying that > phc2sys will follow the roles decided by the PTP protocol, and set the PHC > on ports that happen to be masters from a port that is a slave? You got it! > All I can > think is that this applies when the node is a boundary clock. Can someone > comment? Um hm. > How does this play with the scenario where the node is the grandmaster? > What is the direction of time synchronization in that case? It picks the first interface from the ptp4l command line (or config. file) as the master clock. With -r -r you can also serve CLOCK_REALTIME. HTH, Richard _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
