IP Fragmentability Header for Packet Drop Reporting
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Solution Overview
Problem
Current communication networks face challenges in effectively controlling packet fragmentation, particularly in IPv4 and IPv6 environments, where fragmentation policies and reporting mechanisms are limited, leading to issues like packet drop reporting and MTU management across network hops.
Innovation Solution
The introduction of an IP fragmentability header that includes a fragmentability flag and reporting indicators, allowing for controlled packet fragmentation and reporting of dropped packets to specific addresses, enabling network elements to manage packet sizes and report drops accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If packet fragmentation is allowed in IPv6 networks, then packet transmission flexibility is improved, but packet drop reporting capability deteriorates
Solution Approach 1:
The patent segments the IP header into two distinct parts: a standard IP header and a new IP fragmentability header. This segmentation allows the fragmentability header to independently provide packet drop reporting capabilities while the standard IP header maintains fragmentation functionality, thus resolving the contradiction between flexibility and reporting capability.
Solution Approach 2:
The IP fragmentability header acts as an intermediary element between the IP packet and the network infrastructure. It mediates the communication by carrying reporting address information that enables packet drop notifications to be sent to specific addresses, thereby providing reporting capability without restricting fragmentation.
2Loss of information
If IP fragmentability header is added to provide reporting capability, then packet drop reporting is improved, but device complexity increases
Solution Approach 1:
The IP fragmentability header is designed to serve multiple functions: it provides packet drop reporting capability, indicates fragmentability status, and carries reporting address information. By making this single header multi-functional, the patent avoids the need for multiple separate headers, thereby limiting the increase in device complexity while achieving comprehensive reporting capability.
3Reliability
If fragmentation control is implemented, then network performance is improved, but ease of operation deteriorates
Solution Approach 1:
The IP fragmentability header enables network elements to automatically determine whether to fragment packets based on the fragmentability flag and reporting address information. The system performs self-service by making fragmentation decisions autonomously without requiring complex manual configuration, thus improving network performance while maintaining ease of operation.
Data Source
AI summary
Various example embodiments for supporting control over fragmentation of packets in communication networks are described. Various example embodiments for supporting control over fragmentation of packets in communication networks may be configured to support control over fragmentation of Internet Protocol (IP) packets. Various example embodiments for supporting control over fragmentation of IP packets in communication networks may be configured to support control over fragmentation of an IP packet based on inclusion of an IP fragmentability header, including information indicative as to whether the IP packet is permitted to be fragmented, within the IP packet. The IP packet may include a header and a payload, where the header includes an IP packet header and the IP fragmentability header including the information indicative as to whether the IP packet is permitted to be fragmented and, optionally, additional information.