Nelson Minar wrote:
> Ah, perverse time, you have to love it. Interesting find. I can't get it
> to answer any NTP monitoring queries, how did you get it to divulge an
> upstream time source?
If you add the server as a synchronization source, it will show its current
system peer in the refid column of the 'ntpq -p' banner. You can do it on
the fly with ntpdc so you don't have to restart the server, but you need to
set up authentication to do it.
ntpdc> addserver 63.240.161.99 iburst
Keyid:
MD5 Password:
done!
ntpdc> quit
saturn:$ ntpq -pn
remote refid st t when poll reach delay offset jitter
============================================================================
*127.127.28.0 .PPS. 0 l 1 16 377 0.000 0.004 0.001
+127.127.20.0 .GPS. 0 l 2 16 377 0.000 9.082 3.955
x192.168.1.103 .WWVB. 1 u 7 16 373 0.173 19.874 0.041
+140.142.16.34 .USNO. 1 u 108 128 377 13.419 2.543 1.413
-132.249.20.88 .WWVB. 1 u 122 128 377 43.062 0.558 1.744
-216.218.254.202 .CDMA. 1 u 105 128 377 32.504 2.066 1.690
-198.60.22.240 .GPS. 1 u 106 128 377 53.792 2.345 2.845
63.240.161.99 129.6.15.28 2 u 53 64 0 0.000 0.000 0.000
I think that server is DOA as that query was done 10 minutes after I added
it as a source and still no reply.
> I think what's most interesting about this is we've found a case where
> the pool's simple scoring mechanism isn't enough to identify an
> obviously bad server. It's been serving lousy time for at least 4 days,
> but decaying at a rate that it's score is still above the cutoff. Not
> sure what the solution for that is. OTOH, it's only 300ms off. For
> casual users who ask one server for the time, this one's close enough to
> be useful. And for the time nerds who really care about < 100ms
> accuracy, they're going to have multiple sources and hopefully will
> ignore this turkey. So the damage isn't that bad.
>
> PS: those are some ugly opentpd bugs you're talking about.
>
>
> http://www.pool.ntp.org/scores/63.240.161.99
--
Dennis Hilberg, Jr. \ [EMAIL PROTECTED]
NTP Server Information: \ http://saturn.dennishilberg.com/ntp.php
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