Re: [Linuxptp-users] ptp4l and multiple network devices

[Vadim B. <va...@gm...>]

Thanks for the reply

The "ptp4l -i enp6s0 -i enp7s0 -m -S" command indeed launches fine, but
doesn't provide the expected result:
ptp4l[1185.776]: port 1: INITIALIZING to LISTENING on INIT_COMPLETE
ptp4l[1185.777]: port 2: INITIALIZING to LISTENING on INIT_COMPLETE
ptp4l[1185.777]: port 0: INITIALIZING to LISTENING on INIT_COMPLETE
ptp4l[1186.939]: port 2: new foreign master 003053.fffe.20597e-1
ptp4l[1187.460]: port 1: new foreign master 003053.fffe.20597f-1
ptp4l[1190.539]: selected best master clock 003053.fffe.20597e
ptp4l[1190.539]: foreign master not using PTP timescale
ptp4l[1190.539]: running in a temporal vortex
ptp4l[1190.539]: port 2: LISTENING to UNCALIBRATED on RS_SLAVE
ptp4l[1191.443]: selected best master clock 003053.fffe.20597e
ptp4l[1191.443]: port 1: LISTENING to PRE_MASTER on RS_MASTER
ptp4l[1191.444]: foreign master not using PTP timescale
ptp4l[1191.444]: running in a temporal vortex
ptp4l[1192.348]: master offset 1501870118887912631 s0 freq +100000000 path
delay  13227463
ptp4l[1195.048]: master offset 1501870118588155041 s0 freq +100000000 path
delay  13227463
ptp4l[1195.444]: port 1: PRE_MASTER to MASTER on
QUALIFICATION_TIMEOUT_EXPIRES
ptp4l[1195.948]: master offset 1501870118491188556 s0 freq +100000000 path
delay  10117670
ptp4l[1204.948]: master offset 1501870121056683138 s1 freq +100000000 path
delay  28161309
ptp4l[1204.949]: failed to step clock: Invalid argument
ptp4l[1205.848]: master offset 1501870120956815970 s2 freq +100000000 path
delay  28161309
ptp4l[1205.848]: port 2: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED
etc.

I assume there might be something wrong with my PC or network config, but
don't know where to start. My linux kernel is 4.4.0-83-generic (I don't
know if it matters).

Cheers


On Thu, Aug 3, 2017 at 9:52 PM, Richard Cochran <ric...@gm...>
wrote:

> On Thu, Aug 03, 2017 at 01:12:48PM -0700, Vadim Butakov wrote:
> > First of all, thanks for ptp4l. You did an awesome job!
> > I'm using two PTP cameras connected to two ethernet network devices
> > (non-PTP) on my PC, and I'm trying to sync them by using the software
> PTP.
>
> Can you tell us why you want "slave only" mode on the PC's second
> interface?
>
> > Can you please give me a hint on what is the proper way to do it?
>
> Start one instance of ptp4l which uses both interfaces:
>
>     ptp4l -i enp6s0 -i enp7s0 -m -S
>
> The master/slave port roles will be selected automatically using the
> protocol.
>
> HTH,
> Richard
>
>