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RE: Long haul latency calculation?
Hi Chris, On long haul and reasonable bandwidth, I figure as a rough estimate to divide the distance in kilometers by 100 will be a very close approximation to an RTT in ms. For instance I get 147 ms ICMP RTT on the Southern Cross Sydney-Seattle link where the fibre path is about 14700 km. It assumes a transmission speed close to .66 the speed of light. The calculation using miles is a little messier ;-) Bruce > -----Original Message----- > From: [email protected] [mailto:[email protected]]On Behalf Of > Christopher Wolff > Sent: Monday, 1 October 2001 12:09 PM > To: [email protected] > Subject: Long haul latency calculation? > > > > Dear Nanog: > > I was wondering if there is a benchmark for long-haul circuit > latency... For example if I had a T1 circuit with 2900 miles > between the two end-points (and assuming the provider is best > case scenario) can I do something like (miles*latencyfactor) = 5 > ms for 2900 miles? > > Thanks, > Christopher >