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Old 01-16-2008, 09:38 AM
Tim Bradshaw
 
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Default Re: Need help setting up NTP in simple network

* ohaya wrote:

> We tried to set this up yesterday, and got the xnptd running on all 4
> machines, but when we tested, it didn't seem that anything was happening
> (we ran snoops on port 123 on several of the machines).


If you're not seeing any traffic on port 123 then I think ntp isn't
running (or isn't doing anything)

> We tested by first using ntpdate on Solaris2, 3, and 4 to get them
> synched to Solaris1, then starting the xnptd on those machines, then
> setting the system clock on Solaris1 back about 10 minutes, and then
> watching the snoop output for awhile.


But you shouldn't do this! ntp is for dealing with clock drift, it's
not designed to deal with massive changes in time. I can't remember
what happens in cases like this but in at least some cases the clients
will just log something to the effect of `I'm not going to try to fix
that because it's too large an offset' and do nothing.

--tim
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