> -----Original Message-----
> From: Keller, Jacob E
> Sent: Wednesday, June 19, 2019 2:42 PM
> To: 'Sanjay Bhandari' <san...@ziffusion.com>
> Subject: RE: [Linuxptp-users] forcing PASSIVE role for a port?
> 

I forgot to reply to the list.

> > From: Sanjay Bhandari [mailto:san...@ziffusion.com]
> > Sent: Wednesday, June 19, 2019 11:52 AM>
> > To: linuxptp-us...@lists.sourceforge.net
> > Subject: [Linuxptp-users] forcing PASSIVE role for a port?
> >
> 
> It helps if you keep the list messages as plain text, and not HTML.
> 
> > Is there a way to set a port in the PASSIVE role with ptp4l?
> >
> > Essentially, we want to listen in on the protocol, but not generate ANY 
> > protocol
> messages ourselves. Nor do we want to set the PHC from any master.
> >
> > Is there a way to achieve this?
> 
> Does using free_running, along with --slave-only do what you want?
> 
> I don't think you're going to get a mode which only listens and doesn't do ANY
> messages back out... For that I'd suggest tcpdump and implement a filter that 
> can
> read the PTP messages and show relevant fields for you.
> 
> Thanks,
> Jake

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