North American Network Operators Group Date Prev  Date Next  Date Index  Thread Index  Author Index  Historical Is latency equivalent to RTT?
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 oneway 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
