[ntp:questions] ntp-4.2.6p5

Steve Clark sclark at netwolves.com
Fri Aug 22 18:09:38 UTC 2014


Hello,

We are running the above release. It works great until the interface for the default route is
brought down and then back up. Then after a half hour or so it ntpstat starts returning


synchronised to unspecified at stratum 4
    time correct to within 1149 ms
    polling server every 64 s

$ ntpdc -c dmpeers
       remote           local      st poll reach  delay   offset disp
=======================================================================
   ccadmin.cycores 0.0.0.0          2   64    0 0.03999  0.004545 3.99217
   va-time.techpro 0.0.0.0          2   64    0 0.05200  0.004608 3.99217
   time.tritn.com  0.0.0.0          2   64    0 0.07124 -0.004152 3.99217
   167.88.119.29   0.0.0.0          3   64    0 0.03712 -0.002695 3.99217
Fri Aug 22 09:06:30 EDT 2014
Z3179:~
$ ntpq -c assoc -c pe -c rv -n

ind assid status  conf reach auth condition  last_event cnt
===========================================================
    1 31380  8043   yes    no  none    reject unreachable  4
    2 31381  8033   yes    no  none    reject unreachable  3
    3 31382  8033   yes    no  none    reject unreachable  3
    4 31383  8043   yes    no  none    reject unreachable  4
       remote           refid      st t when poll reach   delay offset
jitter
==============================================================================
   216.66.0.142    130.207.244.240  2 -  765   64    0   39.999 4.545   0.000
   208.87.104.40   129.6.15.28      2 -  765   64    0   52.017 4.608   0.000
   208.75.89.4     69.36.224.15     2 -  766   64    0   71.249 -4.152
0.000
   167.88.119.29   108.61.73.243    3 -  765   64    0   37.125 -2.695
0.000
associd=0 status=0018 leap_none, sync_unspec, 1 event, no_sys_peer,
version="ntpd4.2.6p5 at 1.2349-o  Sat Nov 23 18:21:48 UTC 2013 (1)",
processor="x86_64",
system="Linux/2.6.32-358.23.2.el6.centos.plus.x86_64", leap=00,
stratum=4, precision=-20, rootdelay=54.747, rootdisp=1041.600,
refid=167.88.119.29,
reftime=d7a1bbf6.5ad81565  Fri, Aug 22 2014 8:54:14.354,
clock=d7a1bef3.d7a186a6  Fri, Aug 22 2014  9:06:59.842, peer=0, tc=6,
mintc=3, offset=-7.321, frequency=-0.287, sys_jitter=0.000,
clk_jitter=1.978, clk_wander=0.588
Fri Aug 22 09:06:59 EDT 2014
Z3179:~
$ ntpq -c assoc -c pe -c rv -n

ind assid status  conf reach auth condition  last_event cnt
===========================================================
    1 31380  8043   yes    no  none    reject unreachable  4
    2 31381  8033   yes    no  none    reject unreachable  3
    3 31382  8033   yes    no  none    reject unreachable  3
    4 31383  8043   yes    no  none    reject unreachable  4
       remote           refid      st t when poll reach   delay offset
jitter
==============================================================================
   216.66.0.142    130.207.244.240  2 -  927   64    0   39.999 4.545   0.000
   208.87.104.40   129.6.15.28      2 -  927   64    0   52.017 4.608   0.000
   208.75.89.4     69.36.224.15     2 -  928   64    0   71.249 -4.152
0.000
   167.88.119.29   108.61.73.243    3 -  927   64    0   37.125 -2.695
0.000
associd=0 status=0018 leap_none, sync_unspec, 1 event, no_sys_peer,
version="ntpd4.2.6p5 at 1.2349-o  Sat Nov 23 18:21:48 UTC 2013 (1)",
processor="x86_64",
system="Linux/2.6.32-358.23.2.el6.centos.plus.x86_64", leap=00,
stratum=4, precision=-20, rootdelay=54.747, rootdisp=1044.030,
refid=167.88.119.29,
reftime=d7a1bbf6.5ad81565  Fri, Aug 22 2014 8:54:14.354,
clock=d7a1bf95.b93c7be6  Fri, Aug 22 2014  9:09:41.723, peer=0, tc=6,
mintc=3, offset=-7.321, frequency=-0.287, sys_jitter=0.000,
clk_jitter=1.978, clk_wander=0.588
Fri Aug 22 09:09:41 EDT 2014





*If I restart ntpd then it starts reporting*
synchronised to NTP server (97.107.134.213) at stratum 3
    time correct to within 95 ms
    polling server every 512 s
$ ntpdc -c dmpeers
      remote           local      st poll reach  delay offset    disp
=======================================================================
.bindcat.fhsu.ed 10.0.133.177     2  256  377 0.05055 -0.001466 0.11301
*framboise.hoopy 10.0.133.177     2  512  377 0.04184 -0.001822 0.11789
.quake.intrstar. 10.0.133.177     2  256  377 0.03975 0.000671 0.09483
.pacific.latt.ne 10.0.133.177     2  256  377 0.07555 0.001798 0.11441
Fri Aug 22 14:06:17 EDT 2014
Z3179:~
$ ntpq -c assoc -c pe -c rv -n

ind assid status  conf reach auth condition  last_event cnt
===========================================================
   1 11072  943a   yes   yes  none candidate    sys_peer  3
   2 11073  941a   yes   yes  none candidate    sys_peer  1
   3 11074  9424   yes   yes  none candidate   reachable  2
   4 11075  961a   yes   yes  none  sys.peer    sys_peer  1
      remote           refid      st t when poll reach delay   offset  jitter
==============================================================================
+209.114.111.1   132.163.4.103    2 u   96  256  377 50.553   -1.466   5.288
+204.2.134.163   241.199.164.101  2 u  252  256  377 75.555    1.798   2.385
+66.207.226.14   129.6.15.28      2 u   99  256  377 39.752    0.671   5.609
*97.107.134.213  128.4.1.1        2 u   83  512  377 41.848   -1.822   2.598
associd=0 status=0615 leap_none, sync_ntp, 1 event, clock_sync,
version="ntpd 4.2.6p5 at 1.2349-o Sat Nov 23 18:21:48 UTC 2013 (1)",
processor="x86_64",
system="Linux/2.6.32-358.23.2.el6.centos.plus.x86_64", leap=00,
stratum=3, precision=-20, rootdelay=47.601, rootdisp=75.887,
refid=97.107.134.213,
reftime=d7a203bf.e7ee6ffe  Fri, Aug 22 2014 14:00:31.905,
clock=d7a2051c.9cdeed42  Fri, Aug 22 2014 14:06:20.612, peer=11075, tc=9,
mintc=3, offset=-0.221, frequency=3.138, sys_jitter=3.165,
clk_jitter=5.837, clk_wander=1.456

Is there a fix for this short of restarting ntpd?

Thanks,

-- 
Stephen Clark
*NetWolves Managed Services, LLC.*
Director of Technology
Phone: 813-579-3200
Fax: 813-882-0209
Email: steve.clark at netwolves.com
http://www.netwolves.com


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