Network Quality Detection via Ingress Egress Subscription
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Solution Overview
Problem
Existing In-band OAM detection schemes face challenges such as excessive resource and time consumption, low resource utilization, performance data errors, and inability to detect network quality in scenarios like east-west eX2 business due to complex routing and path inconsistencies.
Innovation Solution
A network quality detection method that sends subscription commands to only the ingress and egress network element devices, determines the service flow path based on received data, and detects network quality using predetermined thresholds, optimizing resource usage and reducing redundant subscriptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the background system calculates all possible routes, PE devices and P devices for each service flow using existing In-band detection schemes, then comprehensive routing information is obtained, but resource consumption and calculation time increase excessively (reaching ten minutes or longer for 10,000-100,000 detection tasks)
Solution Approach 1:
The system performs preliminary actions by sending subscription commands only to ingress and egress network element devices before actual detection. This preliminary subscription setup enables the system to obtain necessary routing information without performing exhaustive calculations of all possible routes, PE devices, and P devices, thereby reducing calculation time from ten minutes or longer to a much shorter duration while maintaining comprehensive routing information through the subscription mechanism.
2Measurement precision
If subscription commands are issued to nodes on all possible paths of each service flow, then complete path coverage is achieved, but In-band OAM resources are wasted due to redundant subscription points when service flows use only one path
Solution Approach 1:
The invention extracts only the essential subscription points (ingress and egress network element devices) from the set of all possible path nodes. Instead of issuing subscription commands to every node on all possible paths, the system selectively subscribes only to the boundary devices that frame the service flow, eliminating redundant subscription points while maintaining complete path detection coverage through the determined service flow path.
3Productivity
If the system uses static routing databases to determine paths, then routing information is available in advance, but the system cannot adapt to dynamic path changes and primary-secondary path reversals causing performance data errors
Solution Approach 1:
The system transitions from static routing database lookups to a dynamic path determination approach. By sending subscription commands to ingress and egress devices and determining the service flow path based on received detection data, the system dynamically adapts to actual network conditions, primary-secondary path reversals, and routing changes in real-time, ensuring both high detection efficiency and reliable performance data accuracy.
4Adaptability or versatility
If In-band OAM detection is implemented for east-west eX2 business without tunnel entities, then comprehensive service coverage is achieved, but routing calculation becomes impossible without tunnel information
Solution Approach 1:
The invention creates a universal detection mechanism that works across multiple service scenarios including traditional tunnel-based services and east-west eX2 business without tunnel entities. By sending subscription commands to ingress and egress devices and determining paths based on received data rather than relying on tunnel-specific routing calculations, the system achieves comprehensive service coverage while simplifying the routing calculation process into a unified approach.
Data Source
AI summary
A network quality detection method and device, a network element device, a computer device, and a computer readable medium. The method comprises: separately sending a subscription command to an ingress network element device and an egress network element device of a service flow, the subscription command comprising at least a detection type and a reporting period, so that network element devices bearing the service flow send data according to the detection type and the reporting period; receiving the data sent by the network element devices; determining the path of the service flow according to the data; and detecting the network quality of the path according to the data and a predetermined indicator threshold.