Protocol-Independent Data Forwarding for Encapsulated Header Processing
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Solution Overview
Problem
Current data forwarding systems are limited in processing encapsulated data units, leading to performance bottlenecks and increased resource consumption when devices communicate via networks, as they fail to modify or replace innermost headers, restricting direct communication between various devices.
Innovation Solution
A protocol independent data unit forwarding system that processes and forwards data units of various communication protocols using a common set of operations, logic, and templates, allowing flexible handling of headers and encapsulation, thereby reducing resource usage and enhancing compatibility across different network segments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If current data forwarding systems process encapsulated data units, then data transmission between devices is enabled, but performance bottlenecks and increased resource consumption occur due to inability to modify innermost headers
Solution Approach 1:
The system segments the data unit processing by separating the outer header processing (performed by the data forwarding system) from the inner header processing (performed by the encapsulated protocol system). This segmentation allows each component to operate independently and efficiently, with the outer system handling routing decisions and the inner system handling protocol-specific modifications, thereby improving overall forwarding efficiency while reducing resource consumption.
Solution Approach 2:
The data forwarding system is designed with universal functionality to handle multiple protocol types through a single unified interface. The system can process different encapsulated protocols (Ethernet, IP, IPv6, UDP, etc.) without requiring protocol-specific processing logic in the outer system, enabling multi-protocol support while maintaining efficient resource utilization through standardized processing paths.
2Device complexity
If current data forwarding systems forward encapsulated data units without modifying innermost headers, then system complexity is reduced, but device compatibility and communication flexibility are restricted
Solution Approach 1:
The system introduces an intermediary mechanism where the outer data forwarding system acts as a mediator that preserves the innermost header integrity while still enabling communication between diverse devices. The outer system provides the adaptability layer that handles protocol translation and routing, allowing inner systems to maintain their original complexity levels while achieving broader device compatibility through the mediating outer forwarding layer.
Solution Approach 2:
The architecture implements a nested structure where multiple protocol headers are encapsulated within each other (outer header containing inner header). This nesting allows the outer forwarding system to operate on the outermost layer without needing to modify inner headers, maintaining low complexity while the nested inner layers provide the necessary protocol-specific functionality for device compatibility.
3Adaptability or versatility
If CPU intervention is used to re-cast data units, then protocol conversion capability is improved, but performance bottlenecks and resource consumption increase significantly
Solution Approach 1:
The system implements self-service by enabling the encapsulated inner protocol system to automatically handle its own header modifications and protocol conversions without requiring external CPU intervention. The inner system processes its own data units through dedicated hardware or firmware paths, eliminating the need for software-based re-casting by the CPU and thereby maintaining high forwarding throughput while preserving protocol conversion capability.
4Measurement precision
If protocol-specific processing is implemented for each encapsulated data unit type, then processing accuracy is improved, but system complexity and resource usage increase
Solution Approach 1:
The system applies local quality by providing protocol-specific processing accuracy only where needed (in the inner encapsulated system) while maintaining simple, unified processing in the outer forwarding system. Each protocol layer processes headers with the precision appropriate to its specific requirements, rather than the entire system being optimized for all protocols, thereby achieving high processing accuracy for each protocol type without proportionally increasing overall system complexity.
Data Source
AI summary
Disclosed are systems, methods, and non-transitory computer-readable media for protocol independent data unit forwarding. A packet forwarding system receives a data unit comprising a header byte string via an input port. The packet forwarding system parses the data unit based on a header type determined based on the input port, yielding a parsing output describing the header byte string of the data unit. The packet forwarding system updates a metadata item associated with the data unit based on the parsing output and determines a packet forwarding instruction for forwarding the data unit to a destination based on the metadata item associated with the data unit. The packet forwarding system forwards the data unit to the destination based on the packet forwarding instruction and the metadata item associated with the data unit.