Hello everyone!

I am new to the PTP topic and I am wrapping my head around a problem which I am not sure how to solve. I try to get a unicast PTP master slave example to work and I am running into the following issue:

root@arria10:/usr/linuxptp# ./ptp4l -f configs/user_gen.cfg -l 6 -m
ptp4l[11164.204]: selected /dev/ptp0 as PTP clock
ptp4l[11164.240]: port 0: hybrid_e2e only works with E2E
ptp4l[11164.242]: port 1: INITIALIZING to LISTENING on INIT_COMPLETE
ptp4l[11164.243]: port 0: INITIALIZING to LISTENING on INIT_COMPLETE
ptp4l[11165.370]: port 1: new foreign master 1c697a.fffe.a60c6e-1
ptp4l[11181.370]: selected best master clock 1c697a.fffe.a60c6e
ptp4l[11181.372]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE
ptp4l[11182.372]: master offset  157635964 s0 freq     +47 path delay      7465 ptp4l[11183.372]: master offset  157635896 s0 freq     -75 path delay      7458 ptp4l[11184.372]: master offset  157635916 s0 freq     -28 path delay      7458 ptp4l[11185.372]: master offset  157635866 s0 freq     -35 path delay      7458 ptp4l[11186.372]: master offset  157635912 s0 freq     -16 path delay      7452 ptp4l[11187.372]: master offset  157635887 s0 freq     -18 path delay      7452 ptp4l[11188.372]: master offset  157635788 s0 freq     -33 path delay      7441 ptp4l[11189.371]: master offset  157635861 s0 freq     -20 path delay      7428 ptp4l[11190.372]: master offset  157635776 s0 freq     -28 path delay      7428 ptp4l[11191.372]: master offset  157635672 s0 freq     -37 path delay      7427 ptp4l[11192.372]: master offset  157635718 s2 freq     -31 path delay      7406
ptp4l[11192.405]: port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED
ptp4l[11193.372]: master offset  157635673 s0 freq     -45 path delay      7406
ptp4l[11193.372]: port 1: SLAVE to UNCALIBRATED on SYNCHRONIZATION_FAULT
ptp4l[11194.372]: master offset  157635638 s0 freq     -40 path delay      7406 ptp4l[11195.372]: master offset  157635593 s0 freq     -42 path delay      7406 ptp4l[11196.372]: master offset  157635583 s0 freq     -34 path delay      7406 ptp4l[11197.371]: master offset  157635618 s0 freq     -20 path delay      7406 ptp4l[11198.372]: master offset  157635563 s0 freq     -26 path delay      7406 ptp4l[11199.372]: master offset  157635496 s0 freq     -31 path delay      7413 ptp4l[11200.372]: master offset  157635481 s0 freq     -29 path delay      7413 ptp4l[11201.372]: master offset  157635554 s0 freq     -18 path delay      7410 ptp4l[11202.372]: master offset  157635469 s2 freq     -25 path delay      7410
ptp4l[11202.405]: port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED
ptp4l[11203.372]: master offset  157635479 s0 freq     +10 path delay      7410
ptp4l[11203.372]: port 1: SLAVE to UNCALIBRATED on SYNCHRONIZATION_FAULT
ptp4l[11204.372]: master offset  157635541 s0 freq     +45 path delay      7428 ptp4l[11205.371]: master offset  157635451 s0 freq      +0 path delay      7428 ptp4l[11206.372]: master offset  157635476 s0 freq      +2 path delay      7413 ptp4l[11207.372]: master offset  157635501 s0 freq     +10 path delay      7428 ptp4l[11208.372]: master offset  157635556 s0 freq     +18 path delay      7428 ptp4l[11209.372]: master offset  157635571 s0 freq     +17 path delay      7428 ptp4l[11210.372]: master offset  157635523 s0 freq     +10 path delay      7436 ptp4l[11211.372]: master offset  157635631 s0 freq     +21 path delay      7438 ptp4l[11212.372]: master offset  157635574 s2 freq     +14 path delay      7440
ptp4l[11212.405]: port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED
ptp4l[11213.371]: master offset  157635624 s0 freq     +50 path delay      7440
ptp4l[11213.371]: port 1: SLAVE to UNCALIBRATED on SYNCHRONIZATION_FAULT
ptp4l[11214.372]: master offset  157635624 s0 freq     +25 path delay      7440 ptp4l[11215.372]: master offset  157635603 s0 freq     +12 path delay      7446

I use linuxptp v2.0 on the client side and v2.0.1 on the server side. I tried with Debian 9 and Ubuntu 2004 on two different machines. I am not sure where the error is coming from!

I attached some more detailed info. Any ideas what it can be or how I can debug this problem? Any advice is appreciated! Thanks in advance!

Client config: https://pastebin.com/YJGhzmAd
Server config: https://pastebin.com/NRAnm6vu
Client debug output: https://pastebin.com/D2f56EYN
Server debug output: https://pastebin.com/NvmCLvn8

Best Nils


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