[ntp:questions] Doubt about Syncronization of GPS SPECTRACOM(2)

Ronan Flood usenet at umbral.org.uk
Thu Mar 1 14:23:30 UTC 2007


mlonisto at gmail.com (Marcos Onisto) wrote:

> I dont understand the output of this command , but follow below:
> 
> # /usr/local/bin/ntpdate -qd 127.0.0.1
> 28 Feb 14:37:12 ntpdate[1081]: ntpdate 4.2.0 at 1.1161-r Thu Apr  1
> 03:24:08 EST 2004 (1)
> Looking for host 127.0.0.1 and service ntp
> host found : localhost
> transmit(127.0.0.1)
> receive(127.0.0.1)
> transmit(127.0.0.1)
> receive(127.0.0.1)
> transmit(127.0.0.1)
> receive(127.0.0.1)
> transmit(127.0.0.1)
> receive(127.0.0.1)
> transmit(127.0.0.1)
> server 127.0.0.1, port 123
> stratum 1, precision -20, leap 00, trust 000
> refid [WWVB], delay 0.02580, dispersion 0.00002
> transmitted 4, in filter 4
> reference time:    c9903c22.a8a70d71  Wed, Feb 28 2007 14:36:34.658
> originate timestamp: c9903c48.4aab241b  Wed, Feb 28 2007 14:37:12.291
> transmit timestamp:  c9903c48.4a9c6e1b  Wed, Feb 28 2007 14:37:12.291
> filter delay:  0.02621  0.02586  0.02580  0.02580
>          0.00000  0.00000  0.00000  0.00000
> filter offset: 0.000186 0.000036 0.000009 0.000010
>          0.000000 0.000000 0.000000 0.000000
> delay 0.02580, dispersion 0.00002
> offset 0.000009
> 
> 28 Feb 14:37:12 ntpdate[1081]: adjust time server 127.0.0.1 offset 0.000009 sec

It worked!  Transmitted 4 queries, received 4 replies, reported offset
of 9 microseconds; which is about as expected as the server is querying
its own system clock.  That's what you wanted to see, isn't it?

> # netstat -an | grep 123
>       *.123                                 Idle
>       *.123                                 Idle
> 127.0.0.1.123                               Idle
> 10.0.0.2.123                                Idle
> 192.168.64.69.123                           Idle
>       *.123                                                         Idle
>
> Everything is all right? What's is wrong?

Looks like your server is not listening on the IPv6 local address ::1,
which is what your "ntpdate -q localhost" said it was trying before

> > > # /usr/local/bin/ntpdate -q localhost
> > > Looking for host localhost and service ntp
> > > host found : localhost
> > > server ::1, stratum 0, offset 0.000000, delay 0.00000

and that's why that did not work.

What operating system are you using?  Perhaps you have some problem with
the definition of localhost in /etc/hosts (or maybe /etc/inet/ipnodes) ?
Or some IPv6 configuration problem?

Your ntpdate says "version 4.2.0 at 1.1161-r", what is your ntpd version,
shown by "ntpq -crv" ?

-- 
Ronan Flood <usenet at umbral.org.uk>




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