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<P><FONT SIZE=2>Hi Bill</FONT>
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<P><FONT SIZE=2> I would like the jitter to b within 200 usec.</FONT>
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<P><FONT SIZE=2> How precise NTP can be ? </FONT>
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<P><FONT SIZE=2> Hesham</FONT>
</P>
<P><FONT SIZE=2>-----Original Message-----</FONT>
<BR><FONT SIZE=2>From: Bill Manning [<A HREF="mailto:bmanning@ISI.EDU">mailto:bmanning@ISI.EDU</A>]</FONT>
<BR><FONT SIZE=2>Sent: Wednesday, October 31, 2001 12:43 PM</FONT>
<BR><FONT SIZE=2>To: Elbakoury, Hesham [SC5:323:EXCH]</FONT>
<BR><FONT SIZE=2>Cc: braden@ISI.EDU; end2end-interest@postel.org</FONT>
<BR><FONT SIZE=2>Subject: Re: [e2e] Clock Synchronization Protocols/Algorithms</FONT>
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<P> <FONT SIZE=2>How accurate do you need? NTP can be very precise.</FONT>
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<BR><FONT SIZE=2>% Hi Bob</FONT>
<BR><FONT SIZE=2>% </FONT>
<BR><FONT SIZE=2>% I know about NTP. I am looking for other protocols that can provide more</FONT>
<BR><FONT SIZE=2>% accurate clock synchronization.</FONT>
<BR><FONT SIZE=2>% </FONT>
<BR><FONT SIZE=2>% Thanks</FONT>
<BR><FONT SIZE=2>% </FONT>
<BR><FONT SIZE=2>% Hesham</FONT>
<BR><FONT SIZE=2>% </FONT>
<BR><FONT SIZE=2>% -----Original Message-----</FONT>
<BR><FONT SIZE=2>% From: Bob Braden [<A HREF="mailto:braden@ISI.EDU">mailto:braden@ISI.EDU</A>]</FONT>
<BR><FONT SIZE=2>% Sent: Wednesday, October 31, 2001 12:00 PM</FONT>
<BR><FONT SIZE=2>% To: end2end-interest@postel.org; Elbakoury, Hesham [SC5:323:EXCH]</FONT>
<BR><FONT SIZE=2>% Subject: Re: [e2e] Clock Synchronization Protocols/Algorithms</FONT>
<BR><FONT SIZE=2>% </FONT>
<BR><FONT SIZE=2>% </FONT>
<BR><FONT SIZE=2>% </FONT>
<BR><FONT SIZE=2>% *> From end2end-interest-admin@postel.org Wed Oct 31 11:55:34 2001</FONT>
<BR><FONT SIZE=2>% *> From: "Hesham Elbakoury" <helbakou@nortelnetworks.com></FONT>
<BR><FONT SIZE=2>% *> To: end2end-interest@postel.org</FONT>
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<BR><FONT SIZE=2>% *> X-Orig: <helbakou@americasm06.nt.com></FONT>
<BR><FONT SIZE=2>% *> Subject: [e2e] Clock Synchronization Protocols/Algorithms</FONT>
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<BR><FONT SIZE=2>% *> Date: Wed, 31 Oct 2001 11:51:01 -0800</FONT>
<BR><FONT SIZE=2>% *> </FONT>
<BR><FONT SIZE=2>% *> </FONT>
<BR><FONT SIZE=2>% *> I am interested to find out what are the protocols (e.g. NTP) that</FONT>
<BR><FONT SIZE=2>% are</FONT>
<BR><FONT SIZE=2>% *> developed for clock synchronization and their methods </FONT>
<BR><FONT SIZE=2>% *> to reduce/eliminate the effect of jitter in the distribution of</FONT>
<BR><FONT SIZE=2>% *> clock/timestamp informations. This jitter is due to queuing delays and</FONT>
<BR><FONT SIZE=2>% *> S/W packet processing overhead.</FONT>
<BR><FONT SIZE=2>% *> </FONT>
<BR><FONT SIZE=2>% *> Thanks</FONT>
<BR><FONT SIZE=2>% *> </FONT>
<BR><FONT SIZE=2>% *> Hesham</FONT>
<BR><FONT SIZE=2>% </FONT>
<BR><FONT SIZE=2>% Go to the RFC Editor Web page www.rfc-editor.org and search for "NTP".</FONT>
<BR><FONT SIZE=2>% </FONT>
<BR><FONT SIZE=2>% Bob Braden</FONT>
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<BR><FONT SIZE=2>% <TITLE>RE: [e2e] Clock Synchronization Protocols/Algorithms</TITLE></FONT>
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<BR><FONT SIZE=2>% <P><FONT SIZE=3D2>Hi Bob</FONT></FONT>
<BR><FONT SIZE=2>% </P></FONT>
<BR><FONT SIZE=2>% </FONT>
<BR><FONT SIZE=2>% <P><FONT SIZE=3D2>&nbsp; I know about NTP. I am looking for other =</FONT>
<BR><FONT SIZE=2>% protocols that can provide more accurate clock synchronization.</FONT></FONT>
<BR><FONT SIZE=2>% </P></FONT>
<BR><FONT SIZE=2>% </FONT>
<BR><FONT SIZE=2>% <P><FONT SIZE=3D2>&nbsp; Thanks</FONT></FONT>
<BR><FONT SIZE=2>% </P></FONT>
<BR><FONT SIZE=2>% </FONT>
<BR><FONT SIZE=2>% <P><FONT SIZE=3D2>&nbsp; Hesham</FONT></FONT>
<BR><FONT SIZE=2>% </P></FONT>
<BR><FONT SIZE=2>% </FONT>
<BR><FONT SIZE=2>% <P><FONT SIZE=3D2>-----Original Message-----</FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>From: Bob Braden [<A =</FONT>
<BR><FONT SIZE=2>% HREF=3D"<A HREF="mailto:braden@ISI.EDU">mailto:braden@ISI.EDU</A>"><A HREF="mailto:braden@ISI.EDU">mailto:braden@ISI.EDU</A></A>]</FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>Sent: Wednesday, October 31, 2001 12:00 PM</FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>To: end2end-interest@postel.org; Elbakoury, Hesham =</FONT>
<BR><FONT SIZE=2>% [SC5:323:EXCH]</FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>Subject: Re: [e2e] Clock Synchronization =</FONT>
<BR><FONT SIZE=2>% Protocols/Algorithms</FONT></FONT>
<BR><FONT SIZE=2>% </P></FONT>
<BR><FONT SIZE=2>% <BR></FONT>
<BR><FONT SIZE=2>% <BR></FONT>
<BR><FONT SIZE=2>% </FONT>
<BR><FONT SIZE=2>% <P><FONT SIZE=3D2>&nbsp; *&gt; From =</FONT>
<BR><FONT SIZE=2>% end2end-interest-admin@postel.org&nbsp; Wed Oct 31 11:55:34 2001</FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>&nbsp; *&gt; From: &quot;Hesham Elbakoury&quot; =</FONT>
<BR><FONT SIZE=2>% &lt;helbakou@nortelnetworks.com&gt;</FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>&nbsp; *&gt; To: end2end-interest@postel.org</FONT></FONT>
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<BR><FONT SIZE=2>% &lt;helbakou@americasm06.nt.com&gt;</FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>&nbsp; *&gt; Subject: [e2e] Clock Synchronization =</FONT>
<BR><FONT SIZE=2>% Protocols/Algorithms</FONT></FONT>
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<BR><FONT SIZE=2>% gt;</FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>&nbsp; *&gt; Date: Wed, 31 Oct 2001 11:51:01 =</FONT>
<BR><FONT SIZE=2>% -0800</FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>&nbsp; *&gt; </FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>&nbsp; *&gt; </FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>&nbsp; *&gt;&nbsp;&nbsp;&nbsp; I am interested to =</FONT>
<BR><FONT SIZE=2>% find out what are the protocols (e.g. NTP) that are</FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>&nbsp; *&gt; developed for clock synchronization and =</FONT>
<BR><FONT SIZE=2>% their methods </FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>&nbsp; *&gt;&nbsp;&nbsp;&nbsp; to reduce/eliminate =</FONT>
<BR><FONT SIZE=2>% the effect of jitter in the distribution of</FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>&nbsp; *&gt; clock/timestamp informations. This =</FONT>
<BR><FONT SIZE=2>% jitter is due to queuing delays and</FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>&nbsp; *&gt;&nbsp;&nbsp;&nbsp; S/W packet processing =</FONT>
<BR><FONT SIZE=2>% overhead.</FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>&nbsp; *&gt; </FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>&nbsp; *&gt;&nbsp;&nbsp;&nbsp; Thanks</FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>&nbsp; *&gt; </FONT></FONT>
<BR><FONT SIZE=2>% <BR><FONT SIZE=3D2>&nbsp; *&gt;&nbsp;&nbsp;&nbsp; Hesham</FONT></FONT>
<BR><FONT SIZE=2>% </P></FONT>
<BR><FONT SIZE=2>% </FONT>
<BR><FONT SIZE=2>% <P><FONT SIZE=3D2>Go to the RFC Editor Web page www.rfc-editor.org and =</FONT>
<BR><FONT SIZE=2>% search for &quot;NTP&quot;.</FONT></FONT>
<BR><FONT SIZE=2>% </P></FONT>
<BR><FONT SIZE=2>% </FONT>
<BR><FONT SIZE=2>% <P><FONT SIZE=3D2>Bob Braden</FONT></FONT>
<BR><FONT SIZE=2>% </P></FONT>
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<P><FONT SIZE=2>-- </FONT>
<BR><FONT SIZE=2>--bill</FONT>
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