Re: [Linuxptp-users] ptp4l and SyncE

[Keller, J. E <jac...@in...>]

> -----Original Message-----
> From: Miroslav Lichvar [mailto:mli...@re...]
> Sent: Tuesday, April 24, 2018 12:16 AM
> To: Cliff Spradlin <th...@go...>
> Cc: lin...@li...
> Subject: Re: [Linuxptp-users] ptp4l and SyncE
> 
> I have a pair of directly connected X550 cards, which behave a bit
> like SyncE with the frequency. Their clocks seem to be locked to each
> other or some other common source. I'm not sure how this works and I'd
> love to see some explanation.

If it's two different X550 cards, I don't know. If it's two ports of the same card, the devices *do* share the same clock source (but you can't atomically set the registers for them, so it's not feasible to set it up as a proper boundary clock)

Thanks,
Jake