Patent ID: 9438517
Filing Date: 2016-09-06
CPC Classification: H04L

Claim Text:
1. A method, comprising: receiving, by a device, a first subset of a first plurality of packets, receiving, by the device, a second subset of a second plurality of packets, parsing, by the device, each packet in the first subset and the second subset to extract invariant header fields from an outermost internet protocol (IP) header until a minimal set of invariant header fields is obtained, for each packet, that uniquely identifies each packet throughout the network, or until the minimal set of invariant header fields cannot be obtained for each packet, computing, by the device, a packet signature from the minimal set of invariant header fields for each packet in the first subset and the second subset for which a minimal set of invariant header fields is obtained; and comparing, by the device, packet signatures associated with the first subset and packet signatures associated with the second subset to identify matching packets with a same packet signature in the first subset and the second subset.