Patent ID: 9258388
Filing Date: 2016-02-09
CPC Classification: H04L

Claim Text:
1. A method of operating a packet dropper in a congestion exposure-enabled network, comprising: sending hosts and receiving hosts communicating with each other by sending flows of packets over network paths via intermediate routers, which, upon detecting congestion, mark packets of said flows as congestion packets; indicating congestion to the sending hosts with a congestion feedback mechanism; the sending hosts, upon receiving a congestion indication, declaring a subset of the packets they send as congestion response packets that produce either conformant flows or non-conformant flows, depending on whether the amount of congestion response packets is balanced with the indicated congestion level; and said packet dropper carrying out in succession a series of traffic analyzing steps for identifying said non-conformant flows, an initial step of said series of traffic analyzing steps including monitoring an overall traffic aggregate at network egress and aggregating said congestion marked packets and said congestion response packets for said overall traffic aggregate, and subsequent steps of said series of traffic analyzing steps being triggered when a running difference between said congestion marked packets and said congestion response packets exceeds a predefined threshold.