[ntp:questions] set up NTP

Richard B. Gilbert rgilbert88 at comcast.net
Wed Nov 5 16:35:01 UTC 2008

Melanie Pfefer wrote:
> Hello,
> I have 2 Solaris 10 servers and want them to be the office's NTP servers.
> I understood that there are what we call stratum servers.
> What should I install on my servers?
> thank you

Solaris ships with an ANCIENT version of ntpd.  You can use that if you 
wish.  You can also download the source for the latest version and build 
it.  The newer version offers more features, maybe some fixes.

You will need to create a configuration file that tells ntpd which 
servers to use, whether or not to insist on cryptographic 
authentication, and a bunch of other fun stuff.

The expression "stratum servers" is not, AFAIK, used anywhere in the NTP 
world.  Each system running ntpd operates at a particular stratum. 
Stratum one servers have a direct connection to an atomic clock. 
Stratum two servers get time from stratum one servers, stratum three 
from stratum two and so on.  Stratum is best understood as the number of 
"hops" from the atomic clock at the root of the tree to your system.

Stratum has little or nothing to do with accuracy; the last NTP survey 
found a server claiming to be stratum one that didn't even have the 
correct year!

More information about the questions mailing list