On Wed, Jul 07, 2021 at 03:02:39PM +0300, Дмитрий Кандыбка wrote: > I've met with ptp4l timesync issue. Master send SYNC packets without > timestamp and slave doesn't handle this case when twoStepFlag set to 1. The > IEEE 1588 standard says that SYNC messages in 2-step ptp don't need > timestamp. It enough to have timestamp in FOLLOW_UP messages.
No, you are mistaken. The Sync message needs an ingress time stamp at the client. > *Software versions*: > *# ethtool -i enp2s0f0 > * > driver: i40e This one again! Always causing trouble. > *linux kernel version: *4.15.0-142-generic Might be too old. I guess the i40e driver has bugs. Try an up to date kernel. Good luck, Richard _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
