Le 23/01/2018 à 16:58, Miroslav Lichvar a écrit : > On Tue, Jan 23, 2018 at 02:44:56PM +0100, FUSTE Emmanuel wrote: >> Le 23/01/2018 à 13:00, Miroslav Lichvar a écrit : >>> With the current versions, if you can avoid the issue with >>> unsynchronized sources, they should interoperate, at least when their >>> polling intervals match. If it doesn't work for you, I'd like to see a >>> tcpdump output. >> Ok. I fixed min/max polling interval to 5 for testing purpose. >> Then I first restarted chrony. Wait for it to sync on a online source. >> Then restarted ntp and take capture. >> Will send you all the datas >> >> NTP is stuck in unreachable state >> Chrony is stuck with only one valid RX. > Ok. I can reproduce this problem. It seems ntpd doesn't update its > state in the interleaved mode when it receives a packet with an > unexpected origin timestamp. There was a similar issue fixed for the > basic mode few ntp releases ago: > https://bugs.ntp.org/show_bug.cgi?id=2952 > > As chronyd doesn't switch to the interleaved mode until it's receiving > valid responses and ntpd doesn't accept responses in the basic mode, > they are stuck waiting forever on each other. OK ! > A similar thing seem to happen when trying to use the interleaved mode > between two 4.2.8p10 ntpds. You said it worked for you before, so I > assume one of the ntpds was an older version which didn't have this > bug? I have a platform with tree ntpds in interleaved mode Was on 2.4.8p8. Were upgraded today to 2.4.8p10 and are still working properly. As in this case i use authent I added authent to the test platform. Mutual auth validate but the two get stuck as before.
Leap status : Not synchronised Version : 4 Mode : Symmetric active Stratum : 0 Poll interval : 5 (32 seconds) Precision : -24 (0.000000060 seconds) Root delay : 0.000000 seconds Root dispersion : 0.000656 seconds Reference ID : 494E4954 (INIT) Reference time : Thu Jan 01 00:00:00 1970 Offset : +0.000000000 seconds Peer delay : 0.000000000 seconds Peer dispersion : 0.000000000 seconds Response time : 0.000000000 seconds Jitter asymmetry: +0.00 NTP tests : 111 101 0000 Interleaved : Yes Authenticated : Yes TX timestamping : Hardware RX timestamping : Hardware Total TX : 17 Total RX : 18 Total valid RX : 2 ssocid=3540 status=e011 conf, authenb, auth, sel_reject, 1 event, mobilize, srcadr=y.y.y.y, srcport=123, dstadr=x.x.x.x, dstport=123, leap=11, stratum=16, precision=-24, rootdelay=0.000, rootdisp=0.000, refid=INIT, reftime=00000000.00000000 Thu, Feb 7 2036 7:28:16.000, rec=de11e02d.60d2f07f Tue, Jan 23 2018 17:24:13.378, reach=000, unreach=10, hmode=1, pmode=0, hpoll=5, ppoll=5, headway=17, flash=1606 pkt_bogus, pkt_unsync, peer_stratum, peer_dist, peer_unreach, keyid=1, offset=0.000, delay=0.000, dispersion=15937.500, jitter=0.000, xleave=0.028, filtdelay= 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00, filtoffset= 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00, filtdisp= 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0 Emmanuel.
