Sonus Networks, Inc.

Ribbon Communications Operating Company, Inc.

Kevin Pilotte

Shiping Li

Toru Mike Yamanishi

Tolga Asveren

Subhransu S Nayak

Mark Duffy

Methods and apparatus for detecting and minimizing the effects of Denial Of Service (DOS) attacks in high-speed networks in which packet processing is carried out by multiple processing cores. In one embodiment of the invention a communications method and apparatus detects and deletes denial of service attack packets in a multi-core distributed packet processing system using a lightweight DOS attack packet detection and deletion process.

Methods and apparatus for detecting and/or dealing with denial of service attacks

Methods and apparatus for sharing bandwidth over a link in a packet-oriented telecommunications system or network that supports multiple types of traffic including, e.g., real time packet flows, opportunistic rate packet flows, control and signaling traffic, are described. In one exemplary embodiment the method includes the steps of receiving a bandwidth allocation request requesting allocation of a required amount of bandwidth for a new real time packet flow, allocating the requested bandwidth from bandwidth reserved for newly-allocated real time packet flows, updating the measure of the total amount of bandwidth allocated to real time packet flows to reflect the allocation of the bandwidth to the new real time packet flow, and generating new bandwidth allocations for existing opportunistic rate packet flows based on a measure of the total amount of bandwidth allocated to real time packet flows. Some embodiments of the invention include methods to enforce the dynamic bandwidth allocations.

Methods and apparatus for bandwidth management in a telecommunications system

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Londonderry, NH, United States of America

Kevin Pilotte