On Thu, Feb 14, 2019 at 09:54:42AM -0600, John Lemonovich wrote: > I have been running ptp4l on various intel FPGA Arria 10 SoC > implementations, including one with the 10Gb MAC and a few with the HPS > EMAC (stmmicro 1GbE) and it's all working very well. One issue we're > seeing is, if our A10 slave has been sync'd with a GM clock, and then that > GM goes away (power cycled or even cable disconnected/reconnected) - our > A10 ptp4l app won't resync to that same GM. When the cable is > reconnected, ptp4l does indeed select that same GM briefly as the BMC, but > then it loses it upon announce receipt timeout expires and it never comes > back. I tried higher thresholds for annoucereceipttimeout, but it didn't > help.
Use tcpdump to see whether Announce messages are missing. Thanks, Richard _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
