[ntp:questions] difference between sntp and ntp server
david at ex.djwhome.demon.co.uk.invalid
Mon Mar 31 10:05:05 UTC 2008
Peter Sprenger wrote:
> a simple question: Is there a difference between a ntp server and a sntp
> server? I studied the RFC's, but found no evidence, that for the server
> side there are differences.
NTP servers are always (give or take version and permission
considerations) acceptable to SNTP clients.
An SNTP server behaves the same as a stratum 1, NTP server, supporting
only client/server and broadcast modes. It must only be used where an
NTP server would be stratum 1 (i.e. early (pre-Windows 2003) versions of
w32time cannot legally act as servers).
Earlier version of the SNTP spec permitted more association modes.
Earlier versions didn't allowed impending leap seconds to be signalled.
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