Simulated Network Packets for Packet Processing Pipeline Diagnostics
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increased demand for evaluating networking device performance through diagnostic testing consumes bandwidth and resources, making existing diagnostic methods impactful and resource-intensive.
Innovation Solution
Simulating network packets within a packet processing pipeline allows for the direct simulation of network packet processing scenarios without generating and sending test packets, leveraging the capabilities of the packet processing pipeline to process simulated packets, which can be dummy or metadata-only, thereby reducing the burden on controllers and optimizing CPU resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If network packets are sent to a networking device for diagnostic testing, then performance evaluation is achieved, but bandwidth and resources are consumed
Solution Approach 1:
The patent creates simulated network packets that copy the essential characteristics and metadata of real network packets without transmitting actual data. These simulated packets are injected into the packet processing pipeline to trigger processing operations, allowing performance evaluation while consuming minimal bandwidth and resources compared to sending real diagnostic packets across the network
Solution Approach 2:
The patent introduces a simulation layer that acts as an intermediary between the diagnostic testing system and the packet processing pipeline. This simulation layer generates synthetic packets with controlled metadata that interact with the pipeline's processing stages, enabling performance measurement without direct network traffic, thus reducing bandwidth consumption while maintaining evaluation accuracy
2Measurement precision
If network packets are sent to a networking device for diagnostic testing, then performance evaluation is achieved, but resources at the networking device are consumed
Solution Approach 1:
The simulated network packets replicate only the necessary metadata and processing triggers needed for performance evaluation, omitting actual payload data. This allows the packet processing pipeline to execute processing operations on duplicate representations of network traffic, enabling diagnostic testing without consuming processing resources that would be required for handling real traffic during the same period
Solution Approach 2:
The patent applies partial action by implementing only the essential packet processing operations needed for performance evaluation rather than full packet handling. The simulated packets trigger specific processing stages and metadata operations without requiring complete packet inspection, forwarding, or state management, thus reducing resource consumption while maintaining sufficient measurement precision
3Loss of energy
If simulated network packets are processed through the packet processing pipeline, then diagnostic testing impact is reduced, but device complexity increases
Solution Approach 1:
The patent implements a universal simulation framework that can generate various types of simulated network packets with different metadata characteristics to test multiple aspects of packet processing performance. The same simulation infrastructure handles different packet types, processing stages, and evaluation scenarios, reducing overall system complexity compared to implementing separate testing mechanisms for each diagnostic objective
Data Source
AI summary
Simulated network packets may be processed via a network processing pipeline. A packet processor may implement packet processing stages to process network packets received via physical network interface at the packet processor. A controller for the packet processor may provide simulated network packets to the packet processor for processing at the different packet processing stages, bypassing the physical network interface. Dummy simulated packets may be provided to or generated at the packet processor on behalf of the controller to be parsed, processed, and returned to the controller. Metadata simulated packets may be injected into the packet processing stages and recaptured in storage locations that are accessible to the controller.