time reference servers?

Wed Nov 12 12:55:40 UTC 2003

> Which time servers (port 13, 37, 123) do you use to set your system
> time?  I would like to find machines closer to me than <time.apple.com>
> and <time.windows.com>. 

Two suggestions:

1.  Put "server pool.ntp.org" in /etc/ntp.conf, perhaps more than once.

    This returns (via a DNS round-robin process) the IP of one of a
    considerable number of NTP servers.

2.  Do a traceroute to [somewhere] and then try out each of the IPs
    along the way.  One or more is likely to be a CISCO box run by your
    ISP that runs NTP.

traceroute to tlug.ss.org (204.225.177.38), 30 hops max, 38 byte packets
 1  HSE-MTL-ppp74224.qc.sympatico.ca (64.229.208.1)  53.017 ms  51.720 ms  47.888 ms
 2  64.230.244.130 (64.230.244.130)  48.141 ms  50.087 ms  50.855 ms
 3  206.108.107.181 (206.108.107.181)  49.783 ms  48.608 ms  50.142 ms
 4  64.230.242.106 (64.230.242.106)  50.431 ms  49.791 ms  50.168 ms
 5  206.108.98.126 (206.108.98.126)  52.010 ms  51.427 ms  51.071 ms
 6  64.230.230.162 (64.230.230.162)  53.432 ms  52.320 ms  50.885 ms
 7  tlug.ss.org (204.225.177.38)  52.784 ms  52.872 ms  54.657 ms
godel% su -
Password:

godel:~# /etc/init.d/ntp-simple stop
Stopping NTP server: ntpd.
godel:~# ntpdate  64.230.244.130  
12 Nov 07:51:32 ntpdate[5249]: adjust time server 64.230.244.130 offset 0.002855 sec
godel:~# ntpdate  206.108.107.181
12 Nov 07:51:41 ntpdate[5250]: adjust time server 206.108.107.181 offset -0.004029 sec
godel:~# ntpdate 64.230.242.106 
12 Nov 07:51:48 ntpdate[5251]: adjust time server 64.230.242.106 offset 0.000315 sec
godel:~# ntpdate 206.108.98.126
12 Nov 07:52:02 ntpdate[5252]: no server suitable for synchronization found
godel:~# ntpdate 64.230.230.162
12 Nov 07:52:15 ntpdate[5253]: no server suitable for synchronization found
godel:~# 

There are three candidates right there that are known to be "relatively
nearby."
--
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