For whatever reason my I217-LM seems to blow up time stamps when I try to use it to set system time using PTP.
I tried the PTP mailing list and was referred here as it is believed to be a HW issue with the I217-LM My set up is as follows: Two CentOS 6.5 machines 2.6.32-504.16.2.el6.x86_64 linuxptp-1.3-1.el6.x86_64 Machine1 eth1 [igb 5.0.5-k] Intel I210 (rev 03) Machine2 eth0 [e1000e 2.3.2-k] Intel I217-LM (rev 05) Machine1 eth1 hooked directly to Machine2 eth0 Machine1 (master): sudo ptp4l -i eth1 -m -2 sudo phc2sys -s eth1 -c CLOCK_REALTIME -w Machine2: sudo ptp4l -i eth0 -m -2 sudo phc2sys -s eth0 -c CLOCK_REALTIME -w Normally the offset blows up immediately unless I sync the machines with NTP before doing anything else. If I do get them to sync it doesn't last very long and the following will happen on Machine2: 16:30:03 ptp4l: [4679.655] master offset 777 s2 freq +4403 path delay 67209 16:30:04 phc2sys: [4679.935] sys offset -658 s2 freq +3877 delay 1836 16:30:04 ptp4l: [4680.655] master offset 2280 s2 freq +6139 path delay 67209 16:30:05 phc2sys: [4680.936] sys offset 1353 s2 freq +5690 delay 1504 16:30:05 ptp4l: [4681.655] master offset -1349 s2 freq +3194 path delay 67123 16:30:06 phc2sys: [4681.936] sys offset -14484 s2 freq -9741 delay 1840 16:30:06 ptp4l: [4682.656] master offset 70368744179084 s2 freq +599999999 path delay 67123 16:30:07 phc2sys: [4682.936] sys offset -70368575979115 s2 freq -500000 delay 1440 16:30:07 ptp4l: [4683.656] master offset 70368127382914 s2 freq +599999999 path delay 17621798 16:30:08 phc2sys: [4683.936] sys offset -70367975616192 s2 freq -500000 delay 1842 16:30:08 ptp4l: [4684.657] master offset 70367522033588 s2 freq +599999999 path delay 22920656 16:30:09 phc2sys: [4684.937] sys offset -70367375237559 s2 freq -500000 delay 1441 I have read that there was some problems with the e1000e driver so I tried with the 3.1.0.2-NAPI version, but still have the same problem as above. Does anyone have any ideas what could be the problem here, what is causing the I217-LM to suddenly have a 70368744179084nS offset? Thanks. ------------------------------------------------------------------------------ _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
