Segment Routing Transfer Apparatus SID List Conversion
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Solution Overview
Problem
Networks using segment routing face restricted extensibility due to differences in SID list acquisition methods between nodes, leading to potential failures in packet transfer.
Innovation Solution
A transfer apparatus that stores node management information for each node, allowing it to receive and convert packets to match SID list acquisition methods between source and destination nodes, enabling seamless packet transfer through segment routing regardless of method differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If nodes use different SID list acquisition methods, then network configuration flexibility is improved, but transfer reliability between nodes deteriorates
Solution Approach 1:
The transfer apparatus acts as an intermediary between nodes with different SID list acquisition methods. It receives packets from a first node, determines the SID list acquisition method of a second node, and automatically acquires and embeds the appropriate SID list into the packet before forwarding. This mediator function enables reliable transfer across nodes with different acquisition methods without requiring manual configuration changes.
2Reliability
If manual network configuration modification is performed to ensure compatibility, then transfer reliability is improved, but device complexity and operation difficulty increase
Solution Approach 1:
The transfer apparatus performs self-service by automatically determining the SID list acquisition method of the destination node and acquiring the appropriate SID list without human intervention. The system monitors packet routing information, identifies compatibility issues, and autonomously adjusts the SID list embedding to ensure successful transfer, eliminating the need for manual configuration modifications.
3Ease of operation
If automatic SID list acquisition is implemented, then ease of operation is improved, but information processing complexity increases
Solution Approach 1:
The transfer apparatus performs preliminary actions by monitoring and storing routing information and SID list acquisition methods in advance. When a packet needs forwarding, it already has the necessary information cached, allowing rapid determination of the appropriate SID list without complex real-time processing. This preliminary preparation simplifies the operational process while managing information processing complexity through proactive data collection.
Data Source
AI summary
A transfer apparatus configured to control transfer of a packet from a transmission source node to a destination node through segment routing includes: a storage unit storing node management information T1 indicating, for each node that functions as a transmission source node or a destination node, an SID list acquisition method of the nodes; a packet reception unit for receiving a reception packet from the destination node; an information setting unit for, if a destination-side SID list acquisition method of the destination node and a transmission source-side SID list acquisition method of the transmission source node do not match each other based on the node management information T1, setting the information that is needed to execute the transmission source-side SID list acquisition method in the reception packet; and a packet transmission unit configured to transmit the reception packet that was subjected to the setting to the transmission source node.