SD-WAN Link Rule Configuration via Real-Time JLP Monitoring

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Solution Overview

Problem

Current SD-WAN rules are manually configured and fail to adapt to changing network conditions, requiring manual updates for each new cloud application, which can have unique requirements, and often have unknown link requirements.

Innovation Solution

A system that monitors real-time network conditions to automatically configure SD-WAN rules on a per-application basis by categorizing jitter, latency, and packet loss values, and using machine learning to infer parameters for unknown applications, selecting the best link based on bandwidth and SLA requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If manual configuration of SD-WAN rules is used, then configuration simplicity for users is maintained, but adaptability to changing network conditions and new applications deteriorates

Engineering Contradiction:
Improveadaptability to network conditionsVSAvoidconfiguration complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system performs self-configuration by automatically monitoring network conditions, identifying applications, determining their link requirements, and configuring SD-WAN rules without user intervention. The gateway device autonomously adapts to changing network conditions and new applications, eliminating the need for manual rule configuration while maintaining simplicity for ordinary users.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system continuously monitors real-time network conditions including JLP values and uses this feedback to dynamically adjust SD-WAN link rules. Application performance metrics and network condition data feed back into the configuration process, enabling automatic adaptation to changing conditions and ensuring optimal link selection for each application.

Inventive Principle:
Principle #23Feedback

2Productivity

If manual SD-WAN rule configuration is used, then initial setup is straightforward, but productivity and response time to new applications deteriorates

Engineering Contradiction:
Improveconfiguration speedVSAvoidtime for manual updates
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The system performs preliminary actions by pre-establishing monitoring capabilities for network conditions and application behavior. When new applications are deployed or network conditions change, the system has already been gathering relevant data and can immediately configure appropriate rules without waiting for manual intervention, significantly reducing configuration time.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The automatic configuration system eliminates the time-consuming manual update process by self-configuring SD-WAN rules in real-time. The gateway device autonomously processes new applications and network condition changes, configuring appropriate link rules without requiring user action, thereby maximizing productivity and minimizing configuration delays.

Inventive Principle:
Principle #25Self-service

3Reliability

If manual configuration assumes fixed network environment, then configuration process is simple, but reliability under changing conditions deteriorates

Engineering Contradiction:
Improvenetwork performance reliabilityVSAvoidmonitoring and adaptation complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system transitions from static manual configuration to dynamic automatic configuration that continuously adapts to changing network conditions. SD-WAN link rules are dynamically adjusted based on real-time monitoring of JLP values, application performance, and network topology changes, ensuring reliable network performance despite environmental variations.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

Continuous monitoring of network conditions and application performance provides feedback that drives automatic rule adjustments. The system uses this feedback loop to maintain reliable network performance by adapting to changing conditions, including new applications, link failures, and performance degradation, without requiring manual reconfiguration.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS20240430159A1Automatic configuration of sd-wan link rules on a per application basis using real-time network conditions
Publication Date: 2024.12.26 FORTINET INC
  • US20240430159A1 patent drawing
  • US20240430159A1 patent drawing
  • US20240430159A1 patent drawing

AI summary

A new link requests are received and an application making the request is identified. SD-WAN parameters are inferred from a protocol and network use behavior. A first parameter is a JLP loss requirement for the application, and can be either low JLP, medium JLP, or high JLP SLA level. A second parameter a downstream/upstream bandwidth capability requirement. Links are determined from the pool of available links that meet the JLP requirement. One of the links is selected for the new link request, from the pool of available links that meet the JLP requirement, based on a downstream and an upstream bandwidth capability. The best link is automatically activated for the new link request.