[ntp:questions] server sync's then goes away (rejected)

ken lierman kliermanm at bigfoot.com
Sat Nov 6 20:49:13 UTC 2004


Hi all!

I have a network where i have "chain" of timeservers.... the first (A) 
connects to a "real" timeserver, or uses local time time if the real one 
isn't available.  Another node (B) connects to that one (A), and other 
nodes (C-Z) all connect to it (B).

- node B always connects and sync's perfectly.  Once connected, it stays 
connected and working perfectly.

- other nodes (C-Z) exhibit a strange behavior.... they connect and sync 
time fine, but after a few minutes loose timesync, even though the IP 
connection is fine.

Any ideas on the problem, or additional info i can gather?

here's some ntpq info that might be useful:

bash-2.05# ntpq -n
ntpq> pe
      remote           refid      st t when poll reach   delay   offset 
  jitter
==============================================================================
  192.168.0.17    203.8.71.10      7 u   64 1024  377    0.207  2473.19 
   0.169
ntpq> as
ind assID status  conf reach auth condition  last_event cnt
===========================================================
   1 54092  b024   yes   yes  none    reject   reachable  2
ntpq> rv 54092
status=b024 reach, conf, 2 events, event_reach,
srcadr=192.168.0.17, srcport=123, dstadr=192.168.0.129, dstport=123,
leap=00, stratum=7, precision=-20, rootdelay=0.275,
rootdispersion=11056.717, refid=203.8.71.10, reach=377, unreach=1,
hmode=3, pmode=4, hpoll=10, ppoll=10, flash=00 ok, keyid=0, ttl=0,
offset=2473.195, delay=0.207, dispersion=0.041, jitter=0.169,
reftime=c537b05f.c53868fd  Sat, Nov  6 2004 20:19:43.770,
org=c537b082.2ef19934  Sat, Nov  6 2004 20:20:18.183,
rec=c537b07f.b5d57ff9  Sat, Nov  6 2004 20:20:15.710,
xmt=c537b07f.b5c5b4aa  Sat, Nov  6 2004 20:20:15.710,
filtdelay=     0.21    0.21    0.25    0.27    0.26    0.80    0.26    0.27,
filtoffset= 2473.19 2473.20 2473.12 2473.07 2473.08 2473.23 2472.89 2472.93,
filtdisp=      0.00    0.03    0.06    0.09    0.12    0.15    0.18    0.21
ntpq> q
bash-2.05# ping 192.168.0.17
PING 192.168.0.17 (192.168.0.17): 56 data bytes
64 bytes from 192.168.0.17: icmp_seq=0 ttl=254 time=0.1 ms


Thanks!
Ken



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