Frame Processing Device Using Parse Command Bitmaps
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Solution Overview
Problem
Current frame processing methods are inefficient in handling and converting frames between different communication protocols, as they require complex parsing and multiple iterations to determine the correct processing instructions, leading to a need for a more streamlined and efficient approach.
Innovation Solution
A method and device that utilize parse commands with bitmaps to extract and generate lookup keys, allowing for efficient frame processing by linking parse commands and providing default commands to simplify the parsing process, enabling multiple iteration parsing and interworking between various protocol suites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex parsing and multiple iterations are used to determine correct processing instructions, then frame processing accuracy is improved, but processing efficiency deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-defining parse commands with bitmaps that specify which frame fields to extract and how to generate lookup keys. This preparation work is done in advance, allowing the processing device to directly execute predefined parsing operations without performing complex analysis during actual frame processing, thus achieving high accuracy while maintaining efficiency
Solution Approach 2:
The patent segments the frame processing task into distinct components: parse commands define extraction rules, bitmaps specify field selections, lookup keys are generated from extracted fields, and processing instructions are retrieved based on these keys. This segmentation transforms a complex monolithic parsing process into manageable discrete steps, improving both accuracy and efficiency
2Adaptability or versatility
If multiple iteration parsing is implemented to handle various protocol suites, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements universality through a unified parse command structure that can handle multiple protocol suites (Ethernet, PPP, ATM, etc.) using the same basic mechanism. The bitmap field in parse commands can be configured to extract fields from different protocol headers, and the lookup key generation process remains consistent across protocols. This single universal parsing system replaces the need for multiple protocol-specific parsing implementations, achieving high adaptability while actually reducing device complexity
Data Source
AI summary
A device and a method for processing a frame, the method includes: receiving a frame; retrieving a lookup key parse command that includes an instruction field and an bitmap representative of selected frame fields to be searched in the frame; generating a lookup key by extracting at least one frame field if the type of the received frame matches an expected frame type; and looking up, using the lookup key, for additional frame processing instructions.