> Most GBit NIC have hardware timestamping these days. Though I don't know if > whether the APU NICs do.
I found 6 Intel 1G NICs that list PTP (IEEE 1588) in their specs - Intel 82574, 82576, 82580, I340, I350 and the I210 - https://communities.intel.com/community/wired/blog/2011/07/07/ieee-1588-update Of those only 1 appears to do hardware timestamping for all Ethernet traffic(??) not just PTP - the Intel I340 - https://communities.intel.com/thread/87751 It appears the APU2 c4 model (which I have) has the Intel I210 NICs which do PTP, I'll check with Pascal/PC Engines if this is true. As you and others have said the APU2+GPS via serial won't be a time-nuts standard time server, this isn't the time/clock source for adding a PTP switch to serve PTP NICs on the LAN. In time, perhaps :) >From >http://www.intel.com/content/www/us/en/embedded/products/networking/i210-ethernet-controller-datasheet.html Advanced Features: — Audio-video bridging • IEEE 1588/802.1AS precision time synchronization Time-nuts standards require implementations and physics/electronics knowhow that are way beyond me, I'm happy to lurk, learn and implement what little I can. The lack of older, now inexpensive frequency standards hardware availability locally here is another barrier besides their shipping weight. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
