[ntp:questions] Helped needed with a "falseticker"

mlawdawg at yahoo.com mlawdawg at yahoo.com
Mon Jun 13 23:43:05 UTC 2005


I could use some help in determining why one of my NTP machines is
being labelled a "falseticker".  Here's my test configuration:

Five NTP hosts running NTP 4.2.0 ported to vxWorks. Hosts are a mix of
MIPs proprietary hw and x86 pc's. All 5 are PEERs.
The same 5 NTP hosts are each client's to the same 2 stratum 1 SERVERs.

NTP Hosts:
A: 192.168.3.77
B: 192.168.14.50
C: 192.168.2.112
D: 192.168.3.123
E: 192.168.11.8

Internet NTP Servers (NIST):
1: 69.25.96.13
2: 207.126.98.204

I've included below ntpq output for each of the 5 nodes. I'd like to
know why Node E is declared a "falseticker" by nodes A, B, & C; but,
NOT by node D. One pattern I noticed is that Node E is listed with the
the largest positive offset by all the other nodes.

Thanks,
Mark


11-> ntpq
ntpq> pe
     remote           refid      st t when poll reach   delay   offset
jitter
==============================================================================
*69.25.96.13     .ACTS.           1 u  150 1024  277   19.976  -13.619
18.246
+207.126.98.204  .ACTS.           1 u  640 1024  377   19.976  -16.593
11.688
-192.168.14.50   69.25.96.13      2 u  614 1024  276   19.920  -41.434
30.016
+192.168.2.112   207.126.98.204   2 u  526 1024  376   19.999   -6.380
19.972
+192.168.3.123   69.25.96.13      2 u  554 1024  377    7.813  -28.851
39.978
x192.168.11.8    69.25.96.13      2 u  255 1024  277    7.813   49.560
34.921
ntpq> as
ind assID status  conf reach auth condition  last_event cnt
===========================================================
  1 49612  b644   yes   yes  none  sys.peer   reachable  4
  2 49613  b444   yes   yes  none  candidat   reachable  4
  3 49614  f3d4   yes   yes   ok    outlyer   reachable 13
  4 49615  f464   yes   yes   ok   candidat   reachable  6
  5 49616  f4f4   yes   yes   ok   candidat   reachable 15
  6 49617  f194   yes   yes   ok  falsetick   reachable  9
ntpq> rv 49612
status=b644 reach, conf, sel_sys.peer, 4 events, event_reach,
srcadr=69.25.96.13, srcport=123, dstadr=192.168.3.77, dstport=123,
leap=00, stratum=1, precision=-18, rootdelay=0.000,
rootdispersion=0.000, refid=ACTS, reach=277, unreach=0, hmode=3,
pmode=4, hpoll=10, ppoll=10, flash=00 ok, keyid=0, ttl=0,
offset=-13.619, delay=19.976, dispersion=24.715, jitter=18.246,
reftime=c6583026.7d24d099  Mon, Jun 13 2005 16:17:42.488,
org=c658303d.56d4a1ad  Mon, Jun 13 2005 16:18:05.339,
rec=c658303d.5cdfc066  Mon, Jun 13 2005 16:18:05.362,
xmt=c658303d.57c10814  Mon, Jun 13 2005 16:18:05.342,
filtdelay=    19.98   19.97   19.98   19.97   19.98   19.97   19.97
19.99,
filtoffset=  -13.62  -31.87  -45.46  -59.76  -54.42  -49.19  -38.64
-33.35,
filtdisp=      9.74   25.13   40.50   55.85   71.19   86.57  117.30
132.63
ntpq> rv 49617
status=f194 reach, conf, auth, sel_falsetick, 9 events, event_reach,
srcadr=192.168.11.8, srcport=123, dstadr=192.168.3.77, dstport=123,
leap=00, stratum=2, precision=-7, rootdelay=7.813,
rootdispersion=129.257, refid=69.25.96.13, reach=277, unreach=0,
hmode=1, pmode=1, hpoll=10, ppoll=10, flash=00 ok, keyid=65535, ttl=0,
offset=49.560, delay=7.813, dispersion=32.313, jitter=34.921,
reftime=c6582f63.88475f6e  Mon, Jun 13 2005 16:14:27.532,
org=c6582fd4.9514e30b  Mon, Jun 13 2005 16:16:20.582,
rec=c6582fd4.8864df38  Mon, Jun 13 2005 16:16:20.532,
xmt=c6582dd6.12a25060  Mon, Jun 13 2005 16:07:50.072,
filtdelay=     7.81    7.81   10.08    7.81   20.02    7.81   20.01
7.81,
filtoffset=   49.56   14.64    4.60  -15.46  -10.46  -20.45  -10.45
-20.47,
filtdisp=     17.55   32.94   48.30   63.69   79.00   94.39  109.77
125.11
ntpq> rv
status=06f4 leap_none, sync_ntp, 15 events, event_peer/strat_chg,
version="4.2.0", processor="x86", system="i686-pc-cygwin", leap=00,
stratum=2, precision=-7, rootdelay=19.976, rootdispersion=92.933,
peer=49612, refid=69.25.96.13,
reftime=c658303d.5cdfc066  Mon, Jun 13 2005 16:18:05.362, poll=10,
clock=c65830f3.1532d96e  Mon, Jun 13 2005 16:21:07.082, state=4,
offset=-15.535, frequency=-77.384, jitter=34.578, stability=0.832
ntpq> q


11-> ntpq "192.168.14.50"
ntpq> pe
     remote           refid      st t when poll reach   delay   offset
jitter
==============================================================================
*69.25.96.13     .ACTS.           1 u  703 1024  377    7.813   29.060
 9.647
+207.126.98.204  .ACTS.           1 u  764 1024  377    7.813   36.439
 7.813
+192.168.2.112   207.126.98.204   2 u  742 1024  376    7.813   25.131
 7.813
+192.168.3.77    69.25.96.13      2 u  684 1024  357    7.813   51.434
 9.960
-192.168.3.123   69.25.96.13      2 u  760 1024  376    7.813    2.549
20.015
x192.168.11.8    69.25.96.13      2 u  397 1024  277    7.813   86.024
 9.997
ntpq> as
ind assID status  conf reach auth condition  last_event cnt
===========================================================
  1 57116  b6f4   yes   yes  none  sys.peer   reachable 15
  2 57117  b4f4   yes   yes  none  candidat   reachable 15
  3 57118  f4f4   yes   yes   ok   candidat   reachable 15
  4 57119  f4f4   yes   yes   ok   candidat   reachable 15
  5 57120  f3f4   yes   yes   ok    outlyer   reachable 15
  6 57121  f1f4   yes   yes   ok  falsetick   reachable 15
ntpq> rv 57116
status=b6f4 reach, conf, sel_sys.peer, 15 events, event_reach,
srcadr=69.25.96.13, srcport=123, dstadr=192.168.14.50, dstport=123,
leap=00, stratum=1, precision=-18, rootdelay=0.000,
rootdispersion=0.000, refid=ACTS, reach=377, unreach=0, hmode=3,
pmode=4, hpoll=10, ppoll=10, flash=00 ok, keyid=0, ttl=0,
offset=29.060,
delay=7.813, dispersion=24.410, jitter=9.647,
reftime=c6582e20.7d556084  Mon, Jun 13 2005 16:09:04.489,
org=c6582e5c.3d8a32f4  Mon, Jun 13 2005 16:10:04.240,
rec=c6582e5c.3618f9e0  Mon, Jun 13 2005 16:10:04.211,
xmt=c6582e5c.3618f9e0  Mon, Jun 13 2005 16:10:04.211,
filtdelay=     7.81    7.81   19.97    7.81    7.81    7.81    7.81
7.81,
filtoffset=   29.06   19.41   33.77   66.49   58.34   46.99   42.16
37.48,
filtdisp=      9.74   25.13   40.47   55.85   71.19   86.54   94.23
101.94
ntpq> rv 57121
status=f1f4 reach, conf, auth, sel_falsetick, 15 events, event_reach,
srcadr=192.168.11.8, srcport=123, dstadr=192.168.14.50, dstport=123,
leap=00, stratum=2, precision=-7, rootdelay=7.813,
rootdispersion=128.220, refid=69.25.96.13, reach=277, unreach=0,
hmode=1, pmode=1, hpoll=10, ppoll=10, flash=00 ok, keyid=65535, ttl=0,
offset=86.024, delay=7.813, dispersion=32.274, jitter=9.997,
reftime=c6582f63.88475f6e  Mon, Jun 13 2005 16:14:27.532,
org=c6582f8f.95142c29  Mon, Jun 13 2005 16:15:11.582,
rec=c6582f8f.7dc6d494  Mon, Jun 13 2005 16:15:11.491,
xmt=c6582f61.70fa07bc  Mon, Jun 13 2005 16:14:25.441,
filtdelay=     7.81    7.81    7.81    7.81    7.81    7.81    7.81
7.81,
filtoffset=   86.02   76.03   80.98  101.03   86.03   76.03   56.03
51.02,
filtdisp=     17.55   32.91   48.30   63.67   79.00   94.38  109.73
117.43
ntpq> rv
status=06f4 leap_none, sync_ntp, 15 events, event_peer/strat_chg,
version="4.2.0", processor="mips", system="i686-pc-cygwin", leap=00,
stratum=2, precision=-7, rootdelay=7.813, rootdispersion=112.469,
peer=57116, refid=69.25.96.13,
reftime=c6582e5c.3618f9e0  Mon, Jun 13 2005 16:10:04.211, poll=10,
clock=c658313d.d4d147be  Mon, Jun 13 2005 16:22:21.831, state=4,
offset=32.496, frequency=-5.446, jitter=29.103, stability=1.618
ntpq> q


11-> ntpq "192.168.2.112"
ntpq> pe
     remote           refid      st t when poll reach   delay   offset
jitter
==============================================================================
+69.25.96.13     .ACTS.           1 u  997 1024  377   19.973   -7.931
 7.813
*207.126.98.204  .ACTS.           1 u   16 1024  377   19.975    4.148
 7.813
+192.168.14.50   69.25.96.13      2 u  753 1024  277    7.813  -25.121
 9.966
-192.168.3.77    69.25.96.13      2 u  139 1024  377    7.813   16.388
 7.813
+192.168.3.123   69.25.96.13      2 u  688 1024  377    7.813  -12.589
29.948
x192.168.11.8    69.25.96.13      2 u  437 1024  277    7.813   55.906
 7.813
ntpq> as
ind assID status  conf reach auth condition  last_event cnt
===========================================================
  1 45012  b454   yes   yes  none  candidat   reachable  5
  2 45013  b654   yes   yes  none  sys.peer   reachable  5
  3 45014  f4f4   yes   yes   ok   candidat   reachable 15
  4 45015  f354   yes   yes   ok    outlyer   reachable  5
  5 45016  f4f4   yes   yes   ok   candidat   reachable 15
  6 45017  f194   yes   yes   ok  falsetick   reachable  9
ntpq> rv 45013
status=b654 reach, conf, sel_sys.peer, 5 events, event_reach,
srcadr=207.126.98.204, srcport=123, dstadr=192.168.2.112, dstport=123,
leap=00, stratum=1, precision=-18, rootdelay=0.000,
rootdispersion=0.000, refid=ACTS, reach=377, unreach=0, hmode=3,
pmode=4, hpoll=10, ppoll=10, flash=00 ok, keyid=0, ttl=0, offset=4.148,
delay=19.975, dispersion=24.523, jitter=7.813,
reftime=c658310d.b3baa9b4  Mon, Jun 13 2005 16:21:33.702,
org=c658313f.75e7ea5f  Mon, Jun 13 2005 16:22:23.460,
rec=c658313f.7766a377  Mon, Jun 13 2005 16:22:23.466,
xmt=c658313f.7247eb25  Mon, Jun 13 2005 16:22:23.446,
filtdelay=    19.98   19.97   19.97   19.98   19.98   19.98   19.98
19.98,
filtoffset=    4.15   -0.69   -4.07   -9.55    2.17   13.54    7.12
2.09,
filtdisp=      9.74   25.08   40.47   55.86   71.25   86.61  101.96
117.30
ntpq> rv 45017
status=f194 reach, conf, auth, sel_falsetick, 9 events, event_reach,
srcadr=192.168.11.8, srcport=123, dstadr=192.168.2.112, dstport=123,
leap=00, stratum=2, precision=-7, rootdelay=7.813,
rootdispersion=128.387, refid=69.25.96.13, reach=277, unreach=0,
hmode=1, pmode=1, hpoll=10, ppoll=10, flash=00 ok, keyid=65535, ttl=0,
offset=55.906, delay=7.813, dispersion=32.264, jitter=7.813,
reftime=c6582f63.88475f6e  Mon, Jun 13 2005 16:14:27.532,
org=c6582f9a.9514e323  Mon, Jun 13 2005 16:15:22.582,
rec=c6582f9a.86c2cc7f  Mon, Jun 13 2005 16:15:22.526,
xmt=c6582f68.84372ae1  Mon, Jun 13 2005 16:14:32.516,
filtdelay=     7.81   20.00    7.81   20.00    7.81    9.94    7.81
19.94,
filtoffset=   55.91   55.93   35.93   35.83   35.83   40.90   15.90
25.90,
filtdisp=     17.55   32.89   48.27   63.64   78.98   94.33  109.72
117.41
ntpq> rv
status=06f4 leap_none, sync_ntp, 15 events, event_peer/strat_chg,
version="4.2.0", processor="x86", system="i686-pc-cygwin", leap=00,
stratum=2, precision=-7, rootdelay=19.975, rootdispersion=76.687,
peer=45013, refid=207.126.98.204,
reftime=c658313f.7766a377  Mon, Jun 13 2005 16:22:23.466, poll=10,
clock=c6583164.01a41419  Mon, Jun 13 2005 16:23:00.006, state=4,
offset=-5.035, frequency=-60.326, jitter=31.243, stability=0.470
ntpq> q


11-> ntpq "192.168.3.123"
ntpq> pe
     remote           refid      st t when poll reach   delay   offset
jitter
==============================================================================
*69.25.96.13     .ACTS.           1 u  754 1024  367    7.813   11.448
22.563
+207.126.98.204  .ACTS.           1 u  793 1024  377    7.813   20.121
25.726
-192.168.14.50   69.25.96.13      2 u  799 1024  277    7.813  -17.608
35.084
+192.168.2.112   207.126.98.204   2 u  809 1024  376   29.943   27.615
29.882
+192.168.3.77    69.25.96.13      2 u  782 1024  376   40.080   48.827
34.962
-192.168.11.8    69.25.96.13      2 u  943 1024  376    9.991   73.421
15.025
ntpq> as
ind assID status  conf reach auth condition  last_event cnt
===========================================================
  1 61820  b6f4   yes   yes  none  sys.peer   reachable 15
  2 61821  b4f4   yes   yes  none  candidat   reachable 15
  3 61822  f3f4   yes   yes   ok    outlyer   reachable 15
  4 61823  f4f4   yes   yes   ok   candidat   reachable 15
  5 61824  f4f4   yes   yes   ok   candidat   reachable 15
  6 61825  f3f4   yes   yes   ok    outlyer   reachable 15
ntpq> rv 61820
status=b6f4 reach, conf, sel_sys.peer, 15 events, event_reach,
srcadr=69.25.96.13, srcport=123, dstadr=192.168.3.123, dstport=123,
leap=00, stratum=1, precision=-18, rootdelay=0.000,
rootdispersion=0.000, refid=ACTS, reach=367, unreach=0, hmode=3,
pmode=4, hpoll=10, ppoll=10, flash=00 ok, keyid=0, ttl=0,
offset=11.448,
delay=7.813, dispersion=26.375, jitter=22.563,
reftime=c6582e62.7d3ef6b5  Mon, Jun 13 2005 16:10:10.489,
org=c6582e8e.62a8650e  Mon, Jun 13 2005 16:10:54.385,
rec=c6582e8e.5fb965c7  Mon, Jun 13 2005 16:10:54.373,
xmt=c6582e8e.5fb965c7  Mon, Jun 13 2005 16:10:54.373,
filtdelay=     7.81    7.81    7.81    7.81    7.81    7.81    7.81
7.81,
filtoffset=   11.45   34.01   56.21   32.74   51.58   46.95   64.78
53.23,
filtdisp=      9.74   25.08   40.44   71.19   86.55  101.91  117.29
132.66
ntpq> rv 61825
status=f3f4 reach, conf, auth, sel_outlyer, 15 events, event_reach,
srcadr=192.168.11.8, srcport=123, dstadr=192.168.3.123, dstport=123,
leap=00, stratum=2, precision=-7, rootdelay=7.813,
rootdispersion=135.483, refid=69.25.96.13, reach=376, unreach=1,
hmode=1, pmode=1, hpoll=10, ppoll=10, flash=00 ok, keyid=65535, ttl=0,
offset=73.421, delay=9.991, dispersion=32.303, jitter=15.025,
reftime=c6582b62.cad75fee  Mon, Jun 13 2005 15:57:22.792,
org=c6582dd2.084802e5  Mon, Jun 13 2005 16:07:46.032,
rec=c6582dd1.f6c3a7f5  Mon, Jun 13 2005 16:07:45.963,
xmt=c6582ddb.fbdbd360  Mon, Jun 13 2005 16:07:55.983,
filtdelay=     9.99    7.81    7.81    7.81    7.81    7.81    7.81
7.81,
filtoffset=   73.42   88.45   83.47   68.49   68.43   68.48   68.45
63.47,
filtdisp=     17.55   32.91   48.28   63.66   79.02   94.42  109.75
125.10
ntpq> rv
status=06f4 leap_none, sync_ntp, 15 events, event_peer/strat_chg,
version="4.2.0", processor="mips", system="i686-pc-cygwin", leap=00,
stratum=2, precision=-7, rootdelay=7.813, rootdispersion=108.781,
peer=61820, refid=69.25.96.13,
reftime=c6582e8e.5fb965c7  Mon, Jun 13 2005 16:10:54.373, poll=10,
clock=c658319f.b4311f9a  Mon, Jun 13 2005 16:23:59.703, state=4,
offset=20.366, frequency=-4.453, jitter=34.920, stability=1.499
ntpq> q


11-> ntpq "192.168.11.8"
ntpq> pe
     remote           refid      st t when poll reach   delay   offset
jitter
==============================================================================
*69.25.96.13     .ACTS.           1 u  584 1024  377    7.813  -56.123
 7.813
+207.126.98.204  .ACTS.           1 u  660 1024  377    7.813  -48.130
 9.793
-192.168.14.50   69.25.96.13      2 u  586 1024  376    7.813  -81.029
 7.813
+192.168.2.112   207.126.98.204   2 u  579 1024  376    9.942  -50.901
 7.813
+192.168.3.77    69.25.96.13      2 u  981 1024  176   29.920  -34.599
30.001
-192.168.3.123   69.25.96.13      2 u  975 1024  377    7.813  -68.471
14.951
ntpq> as
ind assID status  conf reach auth condition  last_event cnt
===========================================================
  1 51404  b694   yes   yes  none  sys.peer   reachable  9
  2 51405  b494   yes   yes  none  candidat   reachable  9
  3 51406  f3f4   yes   yes   ok    outlyer   reachable 15
  4 51407  f4c4   yes   yes   ok   candidat   reachable 12
  5 51408  f4d4   yes   yes   ok   candidat   reachable 13
  6 51409  f3f4   yes   yes   ok    outlyer   reachable 15
ntpq> rv 51404
status=b694 reach, conf, sel_sys.peer, 9 events, event_reach,
srcadr=69.25.96.13, srcport=123, dstadr=192.168.11.8, dstport=123,
leap=00, stratum=1, precision=-18, rootdelay=0.000,
rootdispersion=0.000, refid=ACTS, reach=377, unreach=0, hmode=3,
pmode=4, hpoll=10, ppoll=10, flash=00 ok, keyid=0, ttl=0,
offset=-56.123, delay=7.813, dispersion=24.416, jitter=7.813,
reftime=c6582f22.7d3d5347  Mon, Jun 13 2005 16:13:22.489,
org=c6582f63.79ea465a  Mon, Jun 13 2005 16:14:27.476,
rec=c6582f63.88475f6e  Mon, Jun 13 2005 16:14:27.532,
xmt=c6582f63.88475f6e  Mon, Jun 13 2005 16:14:27.532,
filtdelay=     7.81    7.81    7.81    7.81    7.81    7.81    7.81
7.81,
filtoffset=  -56.12  -49.53  -43.41  -37.10  -30.81  -24.42  -21.32
-17.72,
filtdisp=      9.74   25.11   40.49   55.88   71.27   86.66   94.37
102.08
ntpq> rv
status=06f4 leap_none, sync_ntp, 15 events, event_peer/strat_chg,
version="4.2.0", processor="mips", system="i686-pc-cygwin", leap=00,
stratum=2, precision=-7, rootdelay=7.813, rootdispersion=136.583,
peer=51404, refid=69.25.96.13,
reftime=c6582f63.88475f6e  Mon, Jun 13 2005 16:14:27.532, poll=10,
clock=c65831bc.f3cd3434  Mon, Jun 13 2005 16:24:28.952, state=4,
offset=-51.128, frequency=-23.911, jitter=36.649, stability=0.897
ntpq> q




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