Re: [Linuxptp-users] Bug in LinuxPTP

[Aman S. <ama...@gm...>]

Hi Richard,

Thanks for the response.

After increasing it to 3600, slave time is updated according to the master
time.But the master machine is not sending Sync message and no follow_up is
there.Both machines directly sending Peer delay message to each other using
gPTP.

Is there any reason for not sending Sync meassage to slave machine.

--
Regards
Aman




On Fri, Jul 12, 2013 at 6:48 PM, Richard Cochran
<ric...@gm...>wrote:

> On Fri, Jul 12, 2013 at 05:06:35PM +0530, Aman Sharma wrote:
> >
> > when running linuxPTP with gPTP configuration between two linux machines,
> > then they are just sending peer delay request to each other and other one
> > also gives response for the same request.Means Master is not sending Sync
> > message and no follow_up is there.And in log messages ,it shows :
>
> Probably you are using software time stamping. If so, you need to
> increase neighborPropDelayThresh. Read the ptp4l.8 man page, and you
> will find:
>
>    neighborPropDelayThresh
>           Upper limit for peer delay in nanoseconds. If the estimated peer
>           delay is greater than this value  the  port  is  marked  as  not
>           802.1AS capable.
>
> HTH,
> Richard
>