NTP: ntpdate: Server dropped: strata too high
Felipe Alfaro Solana
felipe_alfaro at linuxmail.org
Fri Aug 1 17:14:39 UTC 2003
On Fri, 2003-08-01 at 18:07, Tom Diehl wrote:
> > I have just set up an NTP server on a Taroon Beta 1 machine. The NTP
> > server seems to be running, but when trying to do an "ntpdate" against
> > it, the client receives the following error:
> >
>
> Have a look at the server with ntpq. Once you start ntpq run the pe, as,
> and rv commands and you should get an idea what is going on. It sounds
> to me like your server is not synced. AN unsynced server is normally
> strat 16.
The server should be synched, since upon starting "ntpd", the "ntpdate"
command is invoked and the time is synched. At least, that's what is
seems from looking at "/var/log/messages" and invoking "ntpdate"
manually.
NOTE: I have had to modify "/etc/init.d/ntpd" because my firewall is
preventing any UDP traffic from privileged (<1023) ports from passing
through it. Thus, I've had to add the "-u" option to "ntpdate". Could
this be affecting the NTP server? Is there any ntpd option to force
usage of non-privileged source UDP ports?
I must say that I have no idea about NTP, so all of this is completely
new to me. Here are is the output of "ntpq":
ntpq> pe
remote refid st t when poll reach delay
offset disp
==============================================================================
woon.curie.fr 0.0.0.0 16 u - 64 0 0.00 0.000
16000.0
xoon.curie.fr 0.0.0.0 16 u - 64 0 0.00 0.000
16000.0
lip.curie.fr 0.0.0.0 16 u - 64 0 0.00 0.000
16000.0
time.nist.gov 0.0.0.0 16 u - 64 0 0.00 0.000
16000.0
clock.redhat.co 0.0.0.0 16 u - 64 0 0.00 0.000
16000.0
ntpq> as
ind assID status conf reach auth condition last_event cnt
===========================================================
1 44140 8000 yes no
2 44141 8000 yes no
3 44142 8000 yes no
4 44143 8000 yes no
5 44144 8000 yes no
ntpq> rv
status=c011 sync_alarm, sync_unspec, 1 event, event_restart
system="Linux", leap=11, stratum=16, rootdelay=0.00,
rootdispersion=0.00, peer=0, refid=0.0.0.0,
reftime=00000000.00000000 Thu, Feb 7 2036 7:28:16.000, poll=4,
clock=c2d51d07.8b3aa000 Fri, Aug 1 2003 19:08:23.543, phase=0.000,
freq=0.00, error=0.00
What's really strange is how all the NTP servers from which time is
synched are set an stratum of 16. For example, "woon.curie.fr" is really
an stratum 1 server:
# ntptrace woon.curie.fr
woon.curie.fr: stratum 1, offset 0.211136, synch distance 0.00000, refid
'GPS'
What's going on here? Any ideas?
Thanks!
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