Is latency equivalent to RTT?
Michael.Dillon at radianz.com
Michael.Dillon at radianz.com
Wed May 14 14:01:06 UTC 2003
Has it become common usage to define latency in an IP network as the round
trip time in that network?
I've always considered latency to be a one-way measure of delay and RTT to
be the sum of the latencies in both directions. When I tried to find
something to back up this view, I discovered that a number of companies
define latency as equivalent to RTT in their SLAs.
Assuming that one has measuring devices in every PoP, do you think it is
harder to measure a full matrix of one way latency compared to measuring a
full matrix of RTT?
Does it even make sense to measure a full matrix of RTT when the
measurement of A to B to A should be equivalent to the measurement of B to
A to B?
--Michael Dillon
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