An exemplary embodiment provides for a method for use in a network device operative to facilitate classification of data flows in a multipath network topology by intelligently mirroring one or more packets of the data flows to a set of cooperating network devices. The method, in one implementation, can involve tracking asymmetric data flows and synchronizing at least portions of the asymmetric data flows between a plurality of network devices to facilitate classification and other operations in multipath network topologies. In one implementation, the present invention allows a plurality of network devices, each disposed on the boundaries of an autonomous system (such as an ISP network) to communicate enough information about data flows encountered at each of the network devices to enable more accurate data flow classification. Since mirrored traffic may affect available bandwidth for regular network traffic, certain implementations of the invention include optimization directed to reducing the amount of mirrored traffic between network devices.