High Latency Link Detection in Virtual Private Networks
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Solution Overview
Problem
Conventional methods fail to timely determine high latency links in virtual private networks, leading to inefficient data transmission and processing, as they rely on manual analysis by network management personnel, which is time-consuming and inaccurate.
Innovation Solution
A method that involves adding a latency threshold to routing messages to automatically determine high latency links by comparing actual latency with predefined thresholds, allowing for immediate identification and adjustment of load balancing policies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual analysis by network management personnel is used to determine high latency links, then the system can identify link quality issues, but the determination process is time-consuming and cannot be performed in time
Solution Approach 1:
The network device automatically adds the latency threshold to routing messages and performs self-determination of high latency links by comparing actual latency with the threshold, eliminating the need for manual analysis by network management personnel and enabling timely automated detection
Solution Approach 2:
The latency threshold is added to routing messages in advance before data transmission occurs. This preliminary configuration enables the receiving device to immediately compare actual latency against the pre-set threshold and identify high latency links without waiting for manual intervention or post-event analysis
2Productivity
If multiple links are used to transmit service data to improve processing efficiency, then data transmission capacity increases, but the complexity of monitoring and determining link quality increases
Solution Approach 1:
The routing message serves multiple functions: it not only transmits routing information but also carries the latency threshold parameter. This multi-functionality allows the same communication channel to simultaneously perform route advertisement and quality monitoring configuration, reducing the need for separate monitoring mechanisms for each link
Solution Approach 2:
The patent introduces a latency threshold parameter that can be dynamically added to routing messages. This parameter enables automated comparison with actual latency measurements, transforming the monitoring approach from complex manual multi-link analysis to simple automated threshold-based determination, thereby reducing monitoring complexity while maintaining efficiency
Data Source
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AI summary
Embodiments of this application disclose a high latency link determining method. A first PE may determine whether a link between the first PE and a second PE is a high latency link, where the second PE is a next hop of the first PE. Specifically, when the first PE determines an actual latency corresponding to the link between the first PE and the second PE, the first PE may compare the actual latency with a first latency threshold, to determine whether the link is a high latency link. When the actual latency is greater than or equal to the first latency threshold, it indicates that the actual latency exceeds a latency upper limit corresponding to the link between the first PE and the second PE. Therefore, the first PE may determine that the link is a high latency link. In this way, it is not necessary to wait for network management personnel to determine whether the link between the first PE device and the second PE device is a high latency link. After determining the actual latency corresponding to the link between the first PE and the second PE, the first PE can determine in time whether the link between the first PE and the second PE is a high latency link.