On Wed, May 02, 2018 at 06:58:56AM -0700, Richard Cochran wrote: > On Tue, Apr 24, 2018 at 09:15:49AM +0200, Miroslav Lichvar wrote: > > 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. > > All gigabit link peers are synchronized. There is a protocol that > determines which peer is master.
Interesting. I assume that applies only to the PHY chip and the MAC may be but doesn't have to be synchronized to the PHY? The X550 is the only NIC I have noticed to have a "synchronized" PHC so far. -- Miroslav Lichvar ------------------------------------------------------------------------------ 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
