Adaptive WAN Traffic Policing for Bandwidth Bottleneck Resolution
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Solution Overview
Problem
Bandwidth limitations at hubs in enterprise wide area networks (WANs) cause bottlenecks, leading to data drop issues and inefficient bandwidth usage, as existing solutions require manual grouping of nodes or additional processing for bandwidth shaping, which can be cumbersome and inefficient.
Innovation Solution
Implement a method to dynamically manage traffic across a WAN by identifying and policing Direct Internet Access (DIA) traffic at nodes, adapting bandwidth based on comparisons with Software-Defined WAN (SD-WAN) traffic thresholds, allowing for real-time adjustments to prevent data drops and optimize bandwidth distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual grouping of nodes or additional processing is implemented for bandwidth shaping, then bandwidth management capability is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The network nodes automatically perform bandwidth policing and adaptation based on local measurements of SD-WAN traffic levels. Each node monitors its own SD-WAN traffic and dynamically adjusts DIA traffic policing without requiring centralized manual configuration or grouping, making the system self-configuring and eliminating cumbersome manual node grouping operations
Solution Approach 2:
The system dynamically changes the policing parameters for DIA traffic based on real-time SD-WAN traffic measurements. When SD-WAN traffic exceeds thresholds, the system automatically adjusts policed bandwidth levels, transforming static bandwidth management into a dynamic parameter-adjustment system that adapts to changing network conditions
2Ease of operation
If static bandwidth allocation is used for DIA traffic, then ease of operation is improved, but adaptability to changing network conditions deteriorates
Solution Approach 1:
The system transforms static DIA traffic policing into a dynamic process by continuously monitoring SD-WAN traffic levels and automatically adjusting policed bandwidth allocations. The policing rate adapts in real-time based on whether SD-WAN traffic is below or above defined thresholds, enabling the network to respond to changing conditions without manual reconfiguration
Solution Approach 2:
The system implements feedback control by measuring SD-WAN traffic levels and using this information to adjust DIA traffic policing. The policing mechanism receives feedback about network conditions and automatically modifies its behavior to optimize bandwidth utilization, creating a closed-loop control system that balances simplicity with adaptability
3Device complexity
If bandwidth policing is not dynamically adjusted, then device complexity is reduced, but productivity and network performance deteriorate due to data drops and bottlenecks
Solution Approach 1:
Network nodes automatically monitor their own SD-WAN traffic levels and self-adjust DIA traffic policing without requiring external control or complex centralized management. This self-service approach maintains low device complexity while preventing data drops and optimizing throughput through automatic bandwidth adaptation
Solution Approach 2:
The system takes preliminary action by proactively adjusting DIA traffic policing before bandwidth exhaustion occurs. When SD-WAN traffic approaches threshold levels, the system preemptively reduces DIA policed bandwidth to prevent bottlenecks and data drops, maintaining network productivity without requiring complex reactive measures
Data Source
AI summary
Embodiments of methods and systems for managing traffic across a WAN are disclosed. A method for managing traffic across a WAN involves identifying incoming traffic as Direct Internet Access (DIA) traffic at a first node, identifying incoming traffic as SD-WAN traffic at the first node, policing the DIA traffic at the first node, and adapting the policing of the DIA traffic at the first node in response to a comparison between the SD-WAN traffic and an SD-WAN traffic threshold.