[ntp:questions] ntptrace returns stratum 16, ntpq -p shows sync with stratum 2 server.

usenet at jaloob.com usenet at jaloob.com
Mon Jun 26 16:10:33 UTC 2006


I've googled for this problem and generally it seems to be caused by a
networking problem, although I can't see anything that would indicate
that. I'm running ubuntu , with only a couple of changes from the
default configuration... uncommenting the pool NTP server, and adding a
local ISP ntp server. I've been playing with this all afternoon, and
I've come against a dead end. I'll probably realise I've done something
stupid as soon as I send this off :-)

to start off:

# ntptrace
localhost.localdomain: stratum 16, offset -0.025048, synch distance
0.012000

# ntpq -p
     remote           refid      st t when poll reach   delay   offset
jitter
==============================================================================
*fortitude.route 82.96.64.2       2 u   56   64  377   10.235  -105.53
23.437
+fiordland.ubunt 193.79.237.14    2 u   60   64  377   11.248  -95.855
24.182
xclock-b.develoo 192.12.19.20     2 u   53   64  377  564.283  -348.56
47.912
 LOCAL(0)        LOCAL(0)        13 l   55   64  377    0.000    0.000
 0.002

# ntpq -c rv
assID=0 status=c624 sync_alarm, sync_ntp, 2 events,
event_peer/strat_chg,
version="ntpd 4.2.0a at 1:4.2.0a+stable-8-r Fri Sep  9 16:44:48 UTC 2005
(1)"?,
processor="i686", system="Linux/2.6.12-9-386", leap=11, stratum=16,
precision=-19, rootdelay=0.000, rootdispersion=13.275, peer=7780,
refid=INIT, reftime=00000000.00000000  Thu, Feb  7 2036  6:28:16.000,
poll=6, clock=0xc84a82b7.98087442, state=3, offset=-25.048,
frequency=0.000, noise=36.622, jitter=22.695, stability=0.000



and here's my ntp.conf





# /etc/ntp.conf, configuration for ntpd

# ntpd will use syslog() if logfile is not defined
#logfile /var/log/ntpd

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


# You do need to talk to an NTP server or two (or three).
server ntp.keme.net iburst #isp's ntp server
server ntp.ubuntulinux.org

# pool.ntp.org maps to more than 100 low-stratum NTP servers.
# Your server will pick a different set every time it starts up.
#  *** Please consider joining the pool! ***
#  ***  <http://www.pool.ntp.org/#join>  ***
server pool.ntp.org

# ... and use the local system clock as a reference if all else fails
# NOTE: in a local network, set the local stratum of *one* stable
server
# to 10; otherwise your clocks will drift apart if you lose
connectivity.
server 127.127.1.0
fudge 127.127.1.0 stratum 13

# By default, exchange time with everybody, but don't allow
configuration.
# See /usr/share/doc/ntp-doc/html/accopt.html for details.
restrict default kod notrap nomodify nopeer noquery

# Local users may interrogate the ntp server more closely.
restrict 127.0.0.1 nomodify

# Clients from this (example!) subnet have unlimited access,
# but only if cryptographically authenticated
#restrict 192.168.123.0  mask  255.255.255.0 notrust

# If you want to provide time to your local subnet, change the next
line.
# (Again, the address is an example only.)
#broadcast 192.168.123.255

# If you want to listen to time broadcasts on your local subnet,
# de-comment the next lines. Please do this only if you trust everybody
# on the network!
#disable auth
#broadcastclient




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