Hi all! As I explained in my previous email, when PXE booting, the PXE boot server that runs in slave mode will have it’s PTP slave instance interrupted, unless I set the tx_timestamp_timeout to ~200ms. Now what happens when booting more than four server at the same time via PXE boot? Will I then have to increase the tx_timestamp_timeout value again? This is not really the most practical way of being able for the PXE boot server (PTP Slave) to keep synchronised.
To solve the problem above, maybe there is a way to prioritise the PTP network traffic so that it will not have any interference with servers booting through PXE? Jord > On 23 Jul 2018, at 10:09, Jord Pool <jord.p...@outlook.com> wrote: > > Hi Richard, > > I have experienced some problems in using PTP with PXE boot. The setup is as > the following: > > - PXE Boot Server (Matchbox) (PTP Slave) > - PXE booted server (PTP Master) > - Other PXE booted servers > > At first, the PTP Master is booted by using the PXE boot server. The PXE boot > server will run in slave mode and will listen to the PXE booted PTP Master. > > Now, when booting any other server in my network by using PXE boot on the PXE > Boot Server (which is the PTP Slave), the PXE Boot Server’s PTP Slave > instance will return an error saying to increase tx_timestamp_timeout or that > it will likely be a driver problem. The PXE Boot Server then get’s an offset > of 36 seconds and returns clock check messages. > > I found that when increasing the tx_timestamp_timeout on the PTP Slave > instance on the PXE Boot Server to 200ms instead of the default 1ms, other > servers boot through PXE without any problems on the PXE Boot Server. > > Is this a normal behaviour of a PXE Boot Server running in Slave mode, maybe > due to the increase of network traffic when booting other servers through PXE? > > Jord > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Linuxptp-users mailing list > Linuxptp-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linuxptp-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
