Why aren't ISPs providing stratum 1 NTP service?

Vadim Antonov avg at ncube.com
Wed Jul 17 06:34:39 UTC 1996

>From customer's point of view, getting stratum 1 service is not
a good idea.  The stratum 2 clocks tend to be more stable.

I think it would be a good idea to stop providing startum 1 service
to anybody but ISPs who would then provide s2 clocks straight
out of their ciscos to customers thus avoiding the symmetry issues.

Reducing load on s1 clocks is also a good thing, as it could improve


>I just crossed the 200th machine syncing of one of my stratum 1 servers. I
>like providing the service and it doesn't cost very much for me to offer the
>service. the problem I have with this is that NTP hates asymmetric routing,
>so the likelyhood is that for most people outside the provider that serves
>this machine, NTP time is suspect.
>It seems to me that the days when running a GPS refclock into an NTP server
>was exotic are long past. Why don't providers give NTP stratum 1 service to
>their customers? Then I can at least shed some of the most suspect clients
>(it's the routing path not the user that is suspect.)

>In search of good time for all,

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