Re: [Linuxptp-users] PTP through a bridge interface

[Rob C. <RCo...@si...>]

I mean #2, a marvell (mv88e6xxx DSA) is used where the cpu port is connected the imx6 ethernet controller.

Yes It is setup as a linux software bridge via brctl.


We are aware that having a switch on the master will add some variation of latency, but is it not possible to send ptp packets and receive them through it?

Because it seems to be working, at least the master and slave are communicating and adjusting.


Thanks,
Rob C

________________________________
From: Richard Cochran <ric...@gm...>
Sent: Tuesday, June 5, 2018 6:55 AM
To: Rob Cornall
Cc: lin...@li...
Subject: Re: [Linuxptp-users] PTP through a bridge interface

On Tue, Jun 05, 2018 at 02:37:36AM +0000, Rob Cornall wrote:
> I'm trying to setup a device as the grand master clock, we using an imx6 dual lite which has ieee 1588 support in the enet controller.
> This is connected to a 7-port switch (no ptp support), and this switch is configured via bridge interface br0.

What do you mean by "this is connected to a 7-port switch"?

Do you mean that:

1. the MAC on the imx6 is physically connected to a switch using an
   Ethernet cable?

2. or that the interface is part of a Linux software bridge, configured
   with "brctl add" ?

In the case of number 2, PTP won't work.

Thanks,
Richard