Multi-Fiber Optic Link Bandwidth Adaptation
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Solution Overview
Problem
Multi-lane links in data transmission can fail silently if one lane becomes faulty, leading to unsatisfactory bandwidth and potential service outages, as existing systems do not effectively manage reduced bandwidth scenarios.
Innovation Solution
A device determines fault states for each lane in a multi-lane link and selectively operates the link at a reduced bandwidth by distributing data only through healthy lanes, terminating the link if the available bandwidth falls below a set threshold to ensure satisfactory communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the multi-lane link continues to operate with faulty lanes, then data transmission can be maintained, but the bandwidth is reduced and service quality deteriorates
Solution Approach 1:
The system dynamically adjusts the operational bandwidth of the multi-lane link based on real-time fault detection. When lanes are identified as faulty, the system automatically reconfigures to use only healthy lanes, changing the link's operational characteristics from fixed to adaptive, thereby maintaining reliability while optimizing bandwidth utilization.
Solution Approach 2:
The system changes the operational parameters of the multi-lane link by modifying the active lane configuration. Instead of operating at the original full bandwidth, the system adjusts the bandwidth parameter to match the available healthy lanes, ensuring continuous operation at an optimized level rather than maintaining degraded performance.
2Productivity
If the multi-lane link is terminated when bandwidth falls below threshold, then service quality is maintained, but service outages increase
Solution Approach 1:
The system implements continuous feedback through fault detection and bandwidth monitoring. This feedback loop allows the system to detect when lanes become faulty, calculate the resulting bandwidth, and make informed decisions about termination based on predefined thresholds, thereby maintaining service quality while avoiding unnecessary outages.
Solution Approach 2:
The system performs preliminary actions by establishing threshold criteria before service degradation occurs. By pre-defining bandwidth thresholds and continuously monitoring lane health, the system can proactively determine the optimal termination point, preventing complete service failure while maintaining quality above acceptable levels.
3Measurement precision
If fault detection is performed on each lane, then accurate bandwidth determination is achieved, but system complexity increases
Solution Approach 1:
The system segments the multi-lane link into individual lane units, allowing independent fault detection and status monitoring for each lane. This segmentation enables precise identification of faulty lanes without requiring complex analysis of the entire link, simplifying the detection mechanism while maintaining high measurement precision through localized monitoring.
Data Source
AI summary
A device is configured to store information indicating a threshold bandwidth with which a multi-lane link is permitted to operate. The device may establish the multi-lane link with a peer device. The multi-lane link may include multiple lanes used to communicate data with the peer device. The device may determine fault states for the lanes included in the multi-lane link. A fault state, for a particular lane, may indicate that the particular lane is faulty. The device may determine an available bandwidth for the multi-lane link based on the fault states for the lanes. The device may selectively terminate the multi-lane link or operate the multi-lane link at the available bandwidth based on whether the available bandwidth satisfies the threshold bandwidth.