Why wouldn't you use NTP for this purpose? On Fri, 29 Sep 2006, Gary Price (iPrimus) wrote:
> I deal with this problem by using a second, fast (LAN) network path and > sending periodic UDP "synchronization packets" between a timing server at > one end and a timing client at the other. The timing packets from the timing > server contain a 64-bit UTC timestamp. The timing client sets the time on > its machine to the UTC time from the packet. I send the packets about every > 30 seconds. This keeps the clocks in synch and allows accurate one-way > transit time estimates. Without the packets the clocks drift enough to mess > up the measurement. I have tested wireless links (GPRS, EVDO) as well with > this method. > > Gary Price > ICT > > ----- Original Message ----- > From: "Yan Gu" <[EMAIL PROTECTED]> > To: <nistnet@antd.nist.gov> > Sent: Friday, September 29, 2006 6:26 AM > Subject: [nistnet] clock synchronization for NISTNet measurement > > > > Hi, > > > > I set up the Nistnet router with two machines connected to it. > > > > A -->Nistnet router -->B > > > > I want to measure one way delay from A to B and wonder how everyone is > > dealing with the clock synchronzation problem on A and B. > > > > I see that the one-way delay is less than 1 msecond between A and B so a > > somewhat > > accurate synchronization is preferred and I am not quite sure if NTP > > itself is enough in this case. > > > > Thanks > > > > Yan > > > > > > -Yan Gu ([EMAIL PROTECTED]) > > > > > > _______________________________________________ > > nistnet mailing list > > nistnet@antd.nist.gov > > http://www-x.antd.nist.gov/mailman/listinfo/nistnet > > > > _______________________________________________ > nistnet mailing list > nistnet@antd.nist.gov > http://www-x.antd.nist.gov/mailman/listinfo/nistnet > _______________________________________________ nistnet mailing list nistnet@antd.nist.gov http://www-x.antd.nist.gov/mailman/listinfo/nistnet
