In <[EMAIL PROTECTED]> Brad Knowles <[EMAIL PROTECTED]> writes:
> Sorry, one thing I should have made clear, but didn't -- each > time the packet crosses a router, the TTL is decremented by one, and > a router won't forward a multicast packet if the TTL is zero. In > this way, using multicast ensures that you always find the servers > that are closest to you in a topological sense. Which is precisely > what we want within NTP. Actually, network topology is only an approximation of what we want because different links have different latencies and jitter. If you want to put a bunch of work into configuring your NTP clients, you should get the complete NTP pool list, send NTP packets to each of them and see what kind of latency/jitter you get, and use the best. You should repleat this periodicially so that you can see longer term trends about which links are consistently good over time. -wayne _______________________________________________ timekeepers mailing list [email protected] https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
