Re: [Linuxptp-users] gPTP and PTP on the same computer

[Richard C. <ric...@gm...>]

On Tue, May 16, 2023 at 08:35:36AM +0000, Fueloep, Tamas via Linuxptp-users wrote:
> Dear LinuxPTP mailing list participants,
> 

> First of all, thank you very much for this amazing software - it
> really makes life easier and it is fun to use. 🙂

"fun to use?"  hahaha that is new!

> I would have a question, because I can't get a grasp on something. I
> have a setup, where multiple sensors are connected to the same
> computer, each of the sensors are connected to a dedicated network
> interface. Some of the sensors are only compatible with gPTP and
> some of them are only with PTP. The default configuration files that
> come with the ptp4linux installation are working perfectly
> independently, but I cannot make the sensors work in a parallel
> way. I have tried to run multiple ptp4l instances and for the PTP
> I've used the 'default.cfg' and for the gPTP the
> 'automotive-master.cfg'. Obviously this does not work as expected,
> but I am a bit lost on figuring out what would be the ideal setup in
> this case.

> Could you please help me what is the right concept to use in this situation?

You can run ptp4l as a Boundary Clock on multiple interfaces at once,
and you can freely mix and match profiles on the different ports.

For example:

    ptp4l -m -q -i eth0 -i eth1

or in a configuration:

   [global]
   # ...

   [eth0]
   # eth0 options...

   [eth1]
   # eth1 options...


The only thing I'm uncertain of is the Automotive Profile.  Most of
the configuration options are per-port, but you will probably not set
the global option inhibit_delay_req.

See the man page and/or config.c to learn which options are per-port.

Thanks,
Richard