> -----Original Message-----
> From: Wong, Vee Khee <vee.khee.w...@intel.com>
> Sent: Friday, October 01, 2021 4:15 AM
> To: 王佳磊 <linkwang1...@gmail.com>; linuxptp-users@lists.sourceforge.net
> Subject: Re: [Linuxptp-users] HW timestampt: SYNC without timestamp
> 
> On Friday, October 1, 2021 18:38, 王佳磊 wrote:
> 
> > Dear all,
> > When I am running ptp4l by HW timestamp, I also face the issue without
> timestamp.
> 
> > Dell-server
> > And my Nic is:    Intel(R) Ethernet 10G 4P X710 SFP+
> > Driver and firmware:
> 
> > So I don;t know how to solve this problem.
> 
> > Can you give some suggestion?
> 
> Are you running with one-step PTP, else it's weird that ptp4l expects
> Timestamp on a SYNC msg.

PTP protocol gets a receive timestamp for sync messages, I believe? The 
transmit timestamp is submitted as part of follow-up, but this error message is 
about receive timestamps.

Thanks,
Jake

> 
> Maybe try to run with '-f configs/default.cfg' ?
> 
> 
> > Best Regards,
> > Jia-Lei,Wang
> 
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