Multi-Domain Packet Forwarding With Segmented Path Headers
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Solution Overview
Problem
Existing packet transmission technologies struggle with planning and processing transmission paths across multiple domains due to the inability to effectively manage and process path information within a single path extension header.
Innovation Solution
The method involves generating packets with multiple path extension headers, each corresponding to a specific domain, allowing for precise path management and processing by encapsulating and forwarding packets based on these headers, with mechanisms for insertion and deletion of headers as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If one path extension header is used to represent transmission path information across multiple domains, then the packet structure remains simple, but the planning and processing of transmission paths becomes difficult and inefficient
Solution Approach 1:
The patent divides the transmission path information into multiple separate path extension headers, with each header corresponding to a specific domain. This segmentation allows each header to be independently processed and managed, making path planning and processing easier while maintaining a clear and organized packet structure.
2Ease of operation
If multiple path extension headers are used to represent transmission paths in different domains, then path planning and processing becomes easier, but the packet structure becomes more complex
Solution Approach 1:
The patent extracts domain-specific path information from a unified path representation and places it into separate path extension headers. Each header contains only the relevant path information for its corresponding domain, which simplifies processing while the overall packet structure remains manageable through this organized extraction approach.
3Quantity of substance
If path information for multiple domains is placed in a single path extension header, then the packet header count remains low, but the transmission path cannot be efficiently managed across different domains
Solution Approach 1:
By segmenting path information into multiple domain-specific path extension headers, the patent enables efficient transmission path management across different domains. Each header can be processed independently by the corresponding domain's forwarding nodes, improving overall path management efficiency despite increasing the number of headers.
Solution Approach 2:
The patent applies local quality by making each path extension header domain-specific, so that each header contains path information optimized for its particular domain. This allows forwarding nodes in each domain to efficiently process only the relevant path information without being burdened by unrelated domain-specific data from other domains.
Data Source
AI summary
The present disclosure provides a method for sending a packet, applied to a head node, including: generating a packet according to a transmission path, and sending the packet, with the transmission path passing through at least two domains, the packet including at least one path extension header, and each path extension header corresponding to one domain through which the transmission path passes and being configured to define the transmission path of the packet in the one domain. The present disclosure further provides a method for forwarding a packet, a head node, a forwarding node and a computer-readable medium.