Cisco Technology, Inc.

Oren Shemesh

Ravid Sagy

Clarence Filsfils

Michael F Keohane

Yuki Arbel

A communication system includes multiple routers interconnected by a packet-based communication network. Each of the routers includes a monitoring application that monitors quality of one or more packet flows during each of multiple successive monitoring periods. For each of the packet flows, the monitoring application determines quality metrics based on information obtained from transport headers of packets.

Monitoring quality of a packet flow in packet-based communication networks

Multiple networked devices behind a NAT device are identified by sampling a proportion of data packets traversing the network and comparing the packet IP Identification fields. Depending on proximity of the values in different packets, each sampled packet is associated with one of currently known devices using the NAT, or identified with a newly recognized device.

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Gilboa, Israel

Oren Shemesh