Forward Path-Based Return Routing for Fault Detection
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Solution Overview
Problem
Existing path fault detection methods in communication networks often result in false detection due to inappropriate return path configurations, leading to incorrect switching and impaired communication quality.
Innovation Solution
A method where the head node sends a fault detection packet indicating that the return path includes the forward path, allowing the head node to determine if the forward path is faulty by receiving feedback through the return path, ensuring the return path covers the forward path and reducing false detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the return path is manually configured or instantly computed using shortest path algorithm, then the path configuration is simplified, but false detection is caused when the return path does not match the forward path
Solution Approach 1:
The patent applies preliminary action by pre-configuring the return path to exactly match the forward path before fault detection occurs. The network device determines the return path based on the forward path in advance, ensuring that both paths are identical before any fault detection is performed. This prevents false detection by ensuring the return path already exists and matches the forward path configuration, rather than trying to compute or manually configure it later.
Solution Approach 2:
The patent applies copying by making the return path an exact copy of the forward path. The network device creates the return path by copying the forward path configuration, ensuring that both paths have identical link sequences. This copying approach guarantees that the return path matches the forward path, eliminating false detection caused by path mismatches while maintaining configuration simplicity.
2Productivity
If the return path is manually configured or instantly computed, then configuration effort is reduced, but false switching occurs affecting communication quality
Solution Approach 1:
The patent applies preliminary action by establishing the return path configuration before fault detection and switching operations. The network device determines the return path based on the forward path in advance, ensuring proper path matching is already in place before any switching decisions are made. This prevents false switching by ensuring the return path is correctly configured beforehand, maintaining both configuration efficiency and communication quality.
3Adaptability or versatility
If the return path does not include the forward path, then path diversity is achieved, but false detection occurs reducing fault detection reliability
Solution Approach 1:
The patent applies preliminary action by determining the return path based on the forward path before fault detection occurs. The network device ensures the return path includes the forward path by establishing this relationship in advance, preventing false detection while still allowing for path diversity in other aspects of the network architecture.
Data Source
AI summary
Embodiments of this application disclose a path fault detection method and apparatus, a related device, and a storage medium, and belong to the field of communication technologies. In embodiments of this application, a return path is determined according to a forward path. In a path fault detection process, the return path through which a fault detection packet fed back by a tail node to a head node passes includes the forward path. In this way, if the head node receives the fault detection packet fed back by the tail node, it indicates that the forward path is not faulty.