Routing and Switching Expert Witness Services

For over a decade Dr. Lavian served as a principal scientist, architect and senior software engineer at Nortel Networks, where he designed software for switches, routers, and network communications devices and developed systems and architectures for managing them. Similarly, his doctorate in computer science from UC Berkeley focused on communication networks. Routing and switching are thus a natural fit for his expert witness practice.

There are cases where analyzing the behaviors of packet switching and routing is an integral part of the litigation. Furthermore, there is a need to understand networking principles, routing algorithms, software and hardware architectures, ASIC, firmware, high-speed backplanes, control plane, data plane, blocking and none-blocking architectures, priority queuing, time-to-live, packet addressing, routing and switching table structures, just to name a few. Dr. Lavian has both the academic background as well as industry experience to analyze and review the technical aspects of routing and switching for patent validity or infringement, and if required in the broader contexts of cloud architectures, Internet protocols, wireless networking and unified communications.

Dr. Lavian served as a Principal Investigator for projects at the Defense Advanced Research Projects Agency (DARPA) of the US Department of Defense, including a research project for the US Air Force Research Lab (AFRL) involving routing and switching in optical SONET and DWDM high-speed networks. As an academic and industrial researcher, he has developed systems and architectures for switches, routers and network management.

Selected Patents – Routing and Switching

In addition to his research and development work, Dr. Lavian is also listed as an inventor of 120 patents. A few of the patents in the field of routing and switching are listed below:

• US 9,083,728: Systems and methods to support sharing and exchanging in a network
• US 6,976,054: Method and system for accessing low-level resources in a network device
• EP 1,142,213: Dynamic assignment of traffic classes to a priority queue in a packet forwarding device
• CA 2,358,525: Dynamic assignment of traffic classes to a priority queue in a packet forwarding device
• US 20080040630: Time-Value Curves to Provide Dynamic QoS for Time-Sensitive File Transfers
• WO/2005/033899: Method and apparatus for scheduling resources on a switched underlay network

Selected Publications – Routing and Switching

Scientific publications co-authored by Dr. Lavian on the subject of routing and switching:

• DWDM-RAM: Enabling Grid Services with Dynamic Optical Networks. Figueira S.; Naiksatam S.; Cohen H.; Cutrell D.; Gutierrez D.; Hoang D.B.; Lavian T.; Mambretti J.; Merrill S.;
• An Extensible, Programmable, Commercial-Grade Platform for Internet Service Architecture. Lavian T.; Hoang D.B.; Travostino F.; Wang P.Y.; Subramanian S.; Monga I.; IEEE Transactions on Systems, Man, and Cybernetics on Technologies Promoting Computational Intelligence, Openness and Programmability in Networks and Internet Services Volume 34, Issue 1, Feb. 2004, pp.58-68.
• Enabling Active Flow Manipulation in Silicon-Based Network Forwarding Engines. Lavian T.; Wang P.; Travostino F.; Subramanian S.; Duraraj R.; Hoang D.B.; Sethaput V.; Culler D.; Proceeding of the Active Networks Conference and Exposition, 2002. (DANCE) 29-30 May 2002, pp. 65-76.
• Intelligent Network Services through Active Flow Manipulation. Lavian T.; Wang P.; Travostino F.; Subramanian S.; Hoang D.B.; Sethaput V.; IEEE Intelligent Networks 2001 Workshop (IN2001), Boston, May 2001.
• Enabling Active Networks Services on a Gigabit Routing Switch. Wang P.; Jaeger R.; Duncan R.; Lavian T.; Travostino F.; 2nd Workshop on Active Middleware Services, 2000.
• Dynamic Classification in Silicon-Based Forwarding Engine Environments. Jaeger R.; Duncan R.; Travostino F.; Lavian T.; Hollingsworth J.; Selected Papers. 10th IEEE Workshop on Metropolitan Area and Local Networks, 1999. 21-24 Nov. 1999, pp.103-109.
• Open Programmable Architecture for Java-Enabled Network Devices. Lavian, T.; Jaeger, R. F.; Hollingsworth, J. K.; IEEE Hot Interconnects Stanford University, August 1999, pp. 265-277.

Selected Presentation – Routing and Switching

Presentations and lectures by Dr. Lavian on the subject of routing and switching:

• Active Network Node in Silicon-Based L3 Gigabit Routing Switch
• Enabling Active Flow Manipulation In Silicon-based Network Forwarding Engines
• Active Nets Technology Transfer through High-Performance Network Devices
• Enabling Active Networks Services on A Gigabit Routing Switch
• Open Distributed Networking Intelligence: A New Java Paradigm
• Open Networking Better Networking Through Programmability
• Open Programmability
• Active Networking On A Programmable Networking Platform
• Open Programmable Architecture for Java-enabled Network Devices
• Integrating Active Networking and Commercial-Grade Routing Platforms
• Active Networking
• Programmable Network Devices

Dr. Lavian provides expert witness services to his clients in the area of routing and switching.

• Thanks to his longstanding academic and industry experience, Dr. Lavian can analyze and review routing and switching patents for validity or infringement and, when required, assess them in the broader context of cloud architectures, Internet protocols and wireless networking and unified communications.