SR-TE Tunnel OAM Management via Intermediate Node Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for managing segment routing traffic engineering (SR-TE) tunnels lack refined management capabilities, leading to inefficient operation and maintenance, as well as suboptimal service transmission quality and efficiency.
Innovation Solution
A tunnel management method where an intermediate node within an SR-TE tunnel obtains and processes Operation, Administration, and Maintenance (OAM) packets to gather OAM information for a specific tunnel segment, enabling refined management, accurate fault locating, and improved maintenance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If OAM information is obtained only at the tail node of an end-to-end SR-TE tunnel, then the entire tunnel can be managed, but refined management cannot be performed on tunnel segments, resulting in low operation and maintenance efficiency
Solution Approach 1:
The patent divides the end-to-end SR-TE tunnel into multiple tunnel segments based on intermediate nodes. Each intermediate node obtains OAM information for its local tunnel segment (from head node to that intermediate node), enabling segmented monitoring and management. This segmentation allows refined management of individual tunnel segments while maintaining overall tunnel management capability.
2Measurement precision
If intermediate nodes obtain and process OAM packets, then refined management on tunnel segments is enabled, but the complexity of the management system increases
Solution Approach 1:
The patent enables intermediate nodes to perform multiple functions: they act as regular forwarding nodes for data traffic and simultaneously serve as OAM monitoring points for their respective tunnel segments. This multi-functionality allows the same network infrastructure to provide both data transmission and segmented OAM monitoring without adding dedicated monitoring equipment, thereby reducing system complexity while improving fault locating precision.
Data Source
AI summary
A tunnel management method includes sending, by a head node of an end-to-end segment routing traffic engineering (SR-TE) tunnel, an operation, administration, and maintenance (OAM) packet to an intermediate node of the SR-TE tunnel, setting an outer label stack of the OAM packet to enable a stack bottom label to point to the intermediate node, receiving an identifying the OAM packet by an intermediate node, obtaining, by the intermediate node, OAM information related to a tunnel between the head node and the intermediate node of the SR-TE tunnel, and sending, by one or more intermediate nodes of the SR-TE tunnel, OAM information obtained by the intermediate nodes to a control management device.