Hi Richard, Virtual PTP Port is defined in Annex B of G.8275. It was moved to recommendation G.8275 since it can be used in both G.8275.1 and G.8275.2 Profiles. It was defined before 1588-2019 Special Port. There are similarities, but not the same.
APTS stands for Assisted Partial Time Support and is an option of the G.8275.2 Profile. IWF stands for Inter-Working Function and is defined in Appendix III of G.8275. It describes how to connect synchronization network segments that are running different PTP profiles. Greg -----Original Message----- From: Richard Cochran <richardcoch...@gmail.com> Sent: Sunday, July 24, 2022 7:19 PM To: SyncMonk Technologies <servi...@syncmonk.net> Cc: Leon Goldin <leon.goldin...@renesas.com>; linuxptp-devel@lists.sourceforge.net Subject: Re: [Linuxptp-devel] [PATCH] Inclusion of a virtual PTP port on a PTP clock On Fri, Jun 17, 2022 at 02:55:02PM +0530, SyncMonk Technologies wrote: > As per G.8275 (Annex-B) including virtual PTP ports on a PTP clock. > This virtual port will be used to support APTS, IWF between different > clock_domains. What the heck is a "virtual PTP port"? Is that anything like a Special Port from 1588? My copy of 8275.2 (ITU-T G.8275.2/Y.1369.2 (03/2020)) has this in Annex-B: Annex B Options to establish the PTP topology with the Alternate BMCA No mention of virtual. Also, I have no idea what APTS or IWF is. Thanks, Richard _______________________________________________ Linuxptp-devel mailing list Linuxptp-devel@lists.sourceforge.net https://jpn01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Flinuxptp-devel&data=05%7C01%7Cgreg.armstrong.uw%40renesas.com%7Ce071f1ae6584404b2ae608da6dcb3c0a%7C53d82571da1947e49cb4625a166a4a2a%7C0%7C0%7C637943016900753631%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=CfdSe4EIVccp1QD%2BxysxCw5HPhO9PmFCwh4gQuLCsnI%3D&reserved=0 _______________________________________________ Linuxptp-devel mailing list Linuxptp-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-devel
