[ntp:questions] Reachable and rejected
Dave Close
dave at compata.com
Fri Sep 12 19:45:18 UTC 2008
David Woolley <david at ex.djwhome.demon.co.uk.invalid> writes:
>Dave Close wrote:
>> What I haven't found while reading is how it is possible for a server to
>> be both reachable and rejected. Note that the reject condition is not
>That's quite easy, but I can't see a case which applies here (using a
>not recently synchronised w32time server (NAT would make no difference),
>kiss of death because of the excess query rate from the router (I think
>the refid would be special); the two servers have error bands that do
>not overlap (I can't remember whether this would produce a special flag
>in the ntpq output))
>> constant; the servers are accepted occasionally, but not for very long.
>That does sound like kiss of death, except for the refid.
>What would help is the result of running rv against each association ID,
>to get the detailed state for the association.
Ok, here goes. I hope this means something to someone else...
# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
server1 172.16.2.5 2 u 24 64 377 2.159 -51835. 8.729
server2 172.16.2.5 2 u 46 64 377 2.200 -51822. 19.581
# ntpq -c as
ind assID status conf reach auth condition last_event cnt
===========================================================
1 20192 9024 yes yes none reject reachable 2
2 20193 9024 yes yes none reject reachable 2
# ntpq
ntpq> rv 20192
assID=20192 status=9024 reach, conf, 2 events, event_reach,
srcadr=taus-idc2.dom1.taus.us.thales, srcport=123,
dstadr=192.168.58.250, dstport=123, leap=00, stratum=2, precision=-7,
rootdelay=0.000, rootdispersion=14089.050, refid=172.16.2.5, reach=377,
unreach=0, hmode=3, pmode=4, hpoll=6, ppoll=6, flash=400 peer_dist,
keyid=0, ttl=0, offset=-51835.943, delay=2.159, dispersion=9.549,
jitter=10.021, reftime=cc74ddf3.bd083558 Fri, Sep 12 2008 5:24:19.738,
org=cc754432.c147ae14 Fri, Sep 12 2008 12:40:34.755,
rec=cc754466.9b66e174 Fri, Sep 12 2008 12:41:26.607,
xmt=cc754466.9ad85a70 Fri, Sep 12 2008 12:41:26.604,
filtdelay= 2.17 2.20 2.16 3.68 4.14 2.25 4.47 2.24,
filtoffset= -51850. -51846. -51835. -51848. -51831. -51832. -51829. -51846.,
filtdisp= 7.81 8.80 9.75 10.72 11.70 12.66 13.65 14.59
ntpq> rv 20193
assID=20193 status=9024 reach, conf, 2 events, event_reach,
srcadr=taus-idc1.dom1.taus.us.thales, srcport=123,
dstadr=192.168.58.250, dstport=123, leap=00, stratum=2, precision=-7,
rootdelay=0.000, rootdispersion=14089.630, refid=172.16.2.5, reach=377,
unreach=0, hmode=3, pmode=4, hpoll=6, ppoll=6, flash=400 peer_dist,
keyid=0, ttl=0, offset=-51822.970, delay=2.200, dispersion=12.060,
jitter=24.499, reftime=cc7533f1.d8de6ddf Fri, Sep 12 2008 11:31:13.847,
org=cc754459.c0418937 Fri, Sep 12 2008 12:41:13.751,
rec=cc75448d.9bb36a6e Fri, Sep 12 2008 12:42:05.608,
xmt=cc75448d.9b19fbd7 Fri, Sep 12 2008 12:42:05.605,
filtdelay= 2.34 2.64 4.18 3.24 2.71 2.40 2.93 2.20,
filtoffset= -51856. -51847. -51849. -51851. -51844. -51838. -51840. -51822.,
filtdisp= 7.81 8.76 9.72 10.69 11.65 12.63 13.59 14.56
--
Dave Close, Compata, Costa Mesa CA +1 714 434 7359
dave at compata.com dhclose at alumni.caltech.edu
"Technology has the shelf life of a banana." - Scott McNealy
--
Dave Close, Compata, Costa Mesa CA "Politics is the business of getting
dave at compata.com, +1 714 434 7359 power and privilege without
dhclose at alumni.caltech.edu possessing merit." - P. J. O'Rourke
More information about the questions
mailing list