Patent ID: 9634851
Date: 2017-04-25
CPC Classifications: H04L

Claim:
1. A passive method for computing network latency through the use of flow records wherein the network comprises at least two endpoint devices and at least one network infrastructure device, the method comprising the step of: receiving flow records from at least one device, said flow records comprising at least two flows associated with a first transmission sent from a first communications device and a second transmission from a second communications device, said first transmission comprising a connection set-up indicator and said second transmission comprising a connection set-up acknowledgment indicator; wherein the flow records comprise at least a start time stamp and an end time stamp of the flow associated with said first transmission and at least a start time stamp and an end time stamp of the flow associated with said second transmission; matching said at least two flows; wherein said step of matching said at least two flows comprises the steps of: determining a intermediate-to-endpoint latency measure based on said time stamps; and storing said intermediate-to-endpoint latency measure on a computer readable storage medium.