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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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