On Sun, Feb 11, 2018 at 05:55:25PM +0100, Petr Kulhavy wrote: > It seems linuxptp does not comply to the IEEE1588-2008 standard when it > comes to processing of the transport specific field in UDP transport. > > The Annex D.4 of the standard says "bit 1-3, reserved, The bit shall be > transmitted as zero and ignored by the receiver". > Linuxptp does not ignore bits 1-3, it requires them to be identical to the > configured value. > > Why this incompatibility?
This is one of a few requirements that is illogical, pointless, and just plain wrong. Probably some vendor with a legacy, non-fixable HW got this text in, but only because the vendor sat on the committee. I can't think of any valid technical reason to ignore these bits. Having said that, do you actually have some equipment that depends on this behavior? Thanks, Richard ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Linuxptp-devel mailing list Linuxptp-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-devel
