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Precision Time Protocol: Revision history


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  • curprev 00:5400:54, 22 March 2023Webberist talk contribs 27,619 bytes +67 →‎Message transport: previous column heading was 802.3 which is misleading as that is all ethernet and underpins IP multicast. The definition of Ethernet multicast frames makes more sense per https://www.sciencedirect.com/topics/engineering/precision-time-protocol. Further clarified by moving the Ethernet multicast column first as it is not an effect of the multicast IP groups. undo
  • curprev 00:4600:46, 22 March 2023Webberist talk contribs 27,552 bytes 0 Undid revision 1145964997 by Webberist (talk) Table is confusing, MAC address column is not the MAC address for the 224 multicast group, it is a different protocol: PTP messages can also be transmitted directly in Ethernet multicast frames to destination 01-1B-19-00-00-00 using ethertype 88F7 undo Tag: Undo
  • curprev 00:2100:21, 22 March 2023Webberist talk contribs 27,552 bytes 0 →‎Message transport: MAC address for 224.0.1.129 changed to match the multicast IP as observed via packet capture & verified using IP to MAC address calculations https://stackoverflow.com/questions/44804425/convert-ip-multicast-to-ethernet-multicast-address. Note attached to MAC address may still be valid as I am unable to comment but it is not generally the MAC address for the multicast traffic. undo Tag: Reverted

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  • curprev 06:1406:14, 16 August 202049.182.27.207 talk 26,757 bytes +131 Updated link to D. Ingram paper to official university repository, rather than Academic scraping site via Internet Archive. Changed to academic reference style. undo

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  • curprev 15:2615:26, 6 March 201878.35.15.243 talk 22,244 bytes −96 Removed incorrect statement. The standard does not state this and no PTP application known to me uses this. Multiple implementations (linuxptp, ptpd and commercial GMCs) respond using multicast on port 320. undo Tag: Visual edit

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