John Delmer Johnson

Title: John Delmer Johnson: Inventor in Network Buffer Management

Introduction

John Delmer Johnson is an inventor based in Los Altos, California. His patent work addresses efficient management of shared buffers and data packet queues in network systems. He is associated with Juniper Networks, Inc., and holds 2 patents.

Latest Patents

Johnson’s listed patents focus on managing network traffic efficiently while balancing performance and fairness.

- **System and method for efficient shared buffer management.** This invention describes a communication interface unit that manages bandwidth between a data processing system and a network. It performs combined dequeue and head-drop operations on packet queues within a predefined number of clock cycles, while carrying out enqueue operations in parallel. The approach is designed to make shared-buffer management more efficient.

- **System and method for fair shared de-queue and drop arbitration in a buffer.** This invention presents a mechanism for managing multiple queues while maintaining fairness among ports without adding performance demands on the memory that stores queue data. Within a port, high-priority traffic is dropped only when it exceeds its fair share of allocated bandwidth. Arbitration is performed among a port’s queues, helping keep the process relatively simple and economical in hardware.

Career Highlights

Johnson’s patent portfolio reflects work on network infrastructure, particularly packet buffering, queue arbitration, and bandwidth allocation. These technologies address the challenge of handling traffic efficiently while preserving fair access to network resources.

Collaborations

Johnson is associated with Juniper Networks, Inc. His listed coworkers include Abhijit Ghosh and Manju Agrawal.

Conclusion

John Delmer Johnson’s inventions focus on practical approaches to shared-buffer management and fair packet-queue arbitration, contributing to efficient network traffic handling.