Remote SD-WAN Policy Engine for Bandwidth Interruption Mitigation
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Solution Overview
Problem
Existing SD-WAN solutions require on-site specialty appliances, leading to bandwidth interruptions and delays due to poor configuration and setup, and have limited monitoring capabilities due to ISP or other constraints.
Innovation Solution
A software-defined networking (SD-WAN) device comprising a network monitor, metrics collector, traffic manager, and policy engine that operates remotely, allowing for real-time network parameter observation, traffic evaluation, and mitigation strategy implementation to optimize network performance without additional on-site appliances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If on-site specialty appliances are deployed for SD-WAN services, then network performance optimization is achieved, but bandwidth interruptions and delays occur due to routing or network conditions
Solution Approach 1:
The patent extracts the SD-WAN control functionality from on-site specialty appliances and relocates it to a remote server. The network monitor, metrics collector, traffic manager, and policy engine are implemented as remote services that communicate with network devices via API, eliminating the need for local appliances and their associated bandwidth interruptions.
Solution Approach 2:
The patent introduces an API as an intermediary between the remote SD-WAN service and network devices. This allows the remote server to manage network devices without requiring direct on-site presence, thereby eliminating bandwidth interruptions caused by local appliance routing while maintaining full control capabilities.
2Ease of operation
If on-site specialty appliances are used for SD-WAN services, then network management functionality is provided, but monitoring capabilities are limited due to ISP or other constraints
Solution Approach 1:
The patent extracts the network monitor and metrics collector components from on-site appliances and relocates them to a remote server. This allows monitoring capabilities to bypass local ISP constraints and network device limitations, enabling comprehensive network-wide monitoring with enhanced precision and flexibility.
Solution Approach 2:
The patent uses an API-based intermediary communication mechanism that allows the remote monitoring system to access network device metrics and performance data without being constrained by local network limitations. This enables precise measurement and monitoring capabilities that were previously unavailable due to ISP or device constraints.
3Adaptability or versatility
If on-site specialty appliances are deployed, then SD-WAN services are provided, but device complexity and configuration requirements increase
Solution Approach 1:
The patent extracts the complex SD-WAN control plane functionality (network monitor, metrics collector, traffic manager, policy engine) from on-site appliances and consolidates it into a remote server. This eliminates the need for complex on-site device configuration while maintaining full SD-WAN service capabilities through centralized management via API.
Solution Approach 2:
The patent implements a universal remote server platform that provides all SD-WAN services (monitoring, metrics collection, traffic management, policy enforcement) through a single centralized system. This multi-functional approach replaces multiple specialized on-site appliances, reducing overall system complexity and configuration requirements while maintaining versatility.
Data Source
AI summary
The present invention relates to a software defined networking in a wide area network (SD-WAN) device, comprising a network monitor which observes and gathers network parameters reflecting network conditions and stores them to a database; a metrics collector which receives and gathers node parameters reflecting node status stores them to the database, a traffic manager which performs a traffic evaluation on the network parameters or node parameters to identify if a network traffic level is within a performance range, and a policy engine which performs a mitigation evaluation on the analysis done by the traffic manager to determine if a mitigation strategy must be initiated. If a mitigation strategy must be initiated, the policy engine determines a target node to receive the mitigation strategy and translates the mitigation strategy into a format understandable to the target node and pushes a mitigation command containing the mitigation strategy to the target node.