A METHOD AND SYSTEM FOR IDENTIFICATION OF TRAFFIC FLOWS CAUSING NETWORK CONGESTION IN CENTRALIZED CONTROL PLANE NETWORKS

摘要

A method and a central network controller for identification of traffic flows causing network congestion are described. In response to a detection of congestion at an egress network interface of a network element, the network element is configured to include a forwarding pipeline including a plurality of forwarding table entries. The forwarding table entries include: an egress forwarding table entry, a group table entry, and a meter table entry. In response to the configuring the network element to include the forwarding table entries, a subset of packets from a copy of the packets is received at the central network controller from the network element at a predetermined threshold rate. A packet flow causing the congestion at the egress network interface is identified from the received subset of packets.