[ntp:questions] Peer swapping at startup
pateretou Pateretou
pateretou at hotmail.com
Fri Oct 15 17:13:03 UTC 2010
Hello,
I'm
trying to setup on my network 2 meimberg GPS clocks: 1 in europe and 1 in the
US for my different datacenters.
I have a
strange behavior when I launch NTP client on my servers
172.17.11.20
is my LONDON GPS
172.17.10.20
is my NY GPS
My test
server is in London.
I run a
ntpdate on my London GPS
When I
launch the NTP client on my test box in london it's sync first with my London
GPS during 1 or 2s and switch to my NY GPS
remote refid st t when poll reach delay
offset jitter
==============================================================================
+172.17.11.20 .PPS. 1 u 16
16 377 0.225
0.125 0.046
*172.17.10.20 .PPS. 1 u 14
16 377 67.210
0.141 0.049
I can't
understand why my client doesn't stay connected with my London GPS Clock?
The
delay/offset and jitter are much better on London
Here my
client conf file:
driftfile
/var/lib/ntp/ntp.drift
statsdir
/var/log/ntpstats/
statistics
loopstats peerstats clockstats
filegen
loopstats file loopstats type day enable
filegen
peerstats file peerstats type day enable
filegen
clockstats file clockstats type day enable
logfile
/var/log/ntpd.log
server
172.17.11.20 minpoll 4 maxpoll 4 prefer
server
172.17.10.20 minpoll 4 maxpoll 4 prefer
#backup
server
172.17.12.20 minpoll 4 maxpoll 4
restrict
-4 default ignore
restrict
-6 default ignore
restrict
127.0.0.1
restrict
::1
restrict
172.17.10.20 nomodify notrap nopeer
restrict
172.17.11.20 nomodify notrap nopeer
restrict
172.17.12.20 nomodify notrap nopeer
Thanks
you for your help
Pat
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