Secondary NAT Table Fast Forwarding for Packet Translation
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Solution Overview
Problem
Current network address translation processes are time-consuming, leading to degraded communication performance, especially when handling large amounts of data, due to limitations in internet protocol resources and the need for extensive address searching and packet filtering.
Innovation Solution
The implementation of an electronic apparatus that utilizes a fast forwarding mechanism with a secondary network address translation table, allowing for rapid packet forwarding by pre-storing address mappings and using a signature to indicate already translated addresses, thereby reducing the need for additional address translation during processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If network address translation is performed using traditional methods, then address translation accuracy is maintained, but translation time increases significantly
Solution Approach 1:
The patent creates a secondary NAT table in advance that stores pre-processed address translation mappings. When packets arrive, the system first checks the secondary table for quick lookup before performing full address translation, significantly reducing translation time for subsequent packets while maintaining accuracy through verification against the primary NAT table.
2Speed
If address translation is performed for every packet, then translation accuracy is ensured, but processing speed decreases
Solution Approach 1:
The patent introduces a secondary NAT table as an intermediary structure between the primary NAT table and the packet processing flow. This secondary table provides fast lookup paths for common address translations while the system periodically verifies mappings against the primary table, balancing speed and accuracy through a two-layer verification mechanism.
3Productivity
If a secondary translation table is implemented for fast forwarding, then packet forwarding speed increases, but device complexity increases
Solution Approach 1:
The patent segments the address translation functionality into two distinct components: a primary NAT table for comprehensive address mapping and a secondary NAT table for fast forwarding operations. This segmentation allows the system to handle different packet types through different paths, improving efficiency while managing complexity through clear functional separation and automated synchronization mechanisms.
Data Source
AI summary
An electronic apparatus includes a first translation table that stores information of a first address and a second address; a second translation table that, in response to a condition being satisfied, stores the information of the first address and the second address based on the first translation table; at least one processor configured to translate the first address of a first packet to the second address based on the first translation table; and a forwarding manager that, in response to a second packet including the first address being received and the information of the first address and the second address being stored in the second translation table, translates the first address of the second packet to the second address based on the second translation table, prior to allocating the second packet to the at least one processor.