SD-WAN SRv6 Path Selection via Controller-Synchronized IFIT Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The inability to implement distributed end-to-end intelligent policy routing in SDWAN SRv6 networking environments due to heterogeneous start and end point devices from different manufacturers, leading to failed quality path selection.
Innovation Solution
A software-defined wide area network end-to-end policy that utilizes a tunnel-based IFIT quality detection function and a controller as a bridge for synchronizing blinding segment identifier (BSID) quality detection information, enabling interaction between devices from different manufacturers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If distributed intelligent policy routing is implemented in SDWAN SRv6 networks with heterogeneous devices from different manufacturers, then path selection capability is improved, but device compatibility and information synchronization become problematic
Solution Approach 1:
The patent introduces a standardized information interaction mechanism that acts as an intermediary between heterogeneous devices from different manufacturers. This mechanism enables quality detection information to be transmitted and synchronized across devices regardless of their manufacturer, solving the compatibility problem while maintaining path selection capability. The standardized interface allows devices from different vendors to exchange BSID quality detection information effectively.
2Area of stationary object
If the number of branch/outlet accesses is increased to tens of thousands in SDWAN scenarios, then network coverage is improved, but the number of policies becomes unmanageably large for device support
Solution Approach 1:
The patent segments the large-scale SDWAN network into manageable domains with hierarchical policy management. Instead of managing policies for each individual branch/outlet separately, the system divides the network into regions or domains, each with its own policy set. This segmentation allows tens of thousands of branch accesses to be covered while keeping policy complexity manageable through domain-based aggregation and hierarchical control.
Solution Approach 2:
The patent creates universal policy templates and standardized policy structures that can be applied across multiple branch outlets simultaneously. Rather than configuring unique policies for each of the tens of thousands of branches, the system uses universal policy frameworks that can be instantiated and adapted for different locations, significantly reducing the total number of policies needed while maintaining comprehensive coverage.
3Stability of the object's composition
If traditional centralized WAN scheduling scheme is used for SDWAN, then policy consistency is maintained, but scheduling timeliness deteriorates due to controller pressure
Solution Approach 1:
The patent implements local quality routing at network edges, allowing branch outlets to make autonomous path selection decisions based on locally cached policy information and real-time quality detection data. This local decision-making capability maintains policy consistency through standardized templates while dramatically improving scheduling timeliness by eliminating the need for real-time centralized controller intervention for each routing decision.
Solution Approach 2:
The patent performs preliminary policy configuration and path selection preparation in advance, caching routing policies and quality parameters at network edges before actual traffic flow occurs. This preliminary action allows the system to maintain policy consistency through pre-configured standardized templates while achieving timely scheduling by having routing decisions already prepared locally, eliminating real-time controller processing delays.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure provides a path selecting method and apparatus based on a software-defined wide area network distributed end-to-end policy and a device, to solve the technical problem that distributed end-to-end intelligent policy routing cannot be realized due to heterogeneous start and end points. The present disclosure provides a device with a tunnel-based IFIT quality detection function and the ability to support specifying end point parameters, takes the controller as a bridge for synchronizing quality detection information of the blinding segment identifier BSID, and facilitates the interaction of quality detection information between devices from different manufacturers, thereby achieving distributed end-to-end policy routing in the SDWAN Srv6 networking environment.