Hello,
This is more complex than I originally thought. However, I think I
might be getting a handle on what I want to do. I have a lab setup
where locally I want to synchronize several hosts each with two
Ethernet interfaces. For eth1 I would like the PHC to be correct, but
I don't want ptp traffi
On Thu, Nov 12, 2020 at 10:01:57AM -0500, Paul Thomas wrote:
> My first question is: does this seem like a reasonable setup?
Seems okay to me. Bear in mind that routing the time signal through
phc2sys (and thus the Linux system time) introduces error at each step.
> My
> second question is arou
Hi Paul and Richard,
We are in a similar boat where we have multiple Mellanox Connect X5/6
cards on a Dell server that will allocated to VMs as PCI passthru. The
control NIC on the host which is also a Mellanox CX5 receives PTP
signals from a PTP master clock. The PCI pass thru cards have no
Oh and just to add, we run ptp4l on the host in unicast mode since we
have no more than 5 or 6 hosts that need to be synced all tied via their
control NIC to the same VLAN.
--
cheers,
Hussam
(Hussamuddin Nasir)
Netlab & GENI Operations Team
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On Thu, Nov 12, 2020 at 09:49:38PM -0500, Hussamuddin Nasir via Linuxptp-devel
wrote:
> The logs suggested that the delay path was off by +/- 4ns which was
> acceptable for us.
>
> Richard: Does this sound like a workable solution.. ?
Yes, your use case is the reason why ptp_kvm was created in t
One last question regarding that.
When ptp4l and phc2sys(auto mode) are used on the host, the UTC-TAI
offset used with whatever the default is.
But when inside the KVMs , using phc2sys with ptp_kvm, i have to specify
the offset manually. So should the offset there be "0" since the hosts
syst
