SD-WAN Access Point Flow Tables Using Virtual IP Mapping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The large number of flow tables required in SD-WAN networks leads to increased load on controllers and decreased data forwarding performance due to complex routing information and frequent service activations.
Innovation Solution
Generate flow tables based on preset address information, specifically virtual IP addresses, for access points in the SD-WAN network, reducing the correlation with real routing information and simplifying the number of tables needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If flow tables are generated based on real routing information for each device, then routing accuracy is improved, but the number of flow tables increases substantially
Solution Approach 1:
The patent uses virtual IP addresses as simplified copies or representations of real device addresses. Instead of creating flow table entries for each actual device, the system creates entries based on virtual IP assignments, reducing the number of flow tables while maintaining routing functionality through the mapping relationship between virtual and real addresses.
2Speed
If flow tables are generated for frequent service activations, then service responsiveness is improved, but controller load increases
Solution Approach 1:
The system performs preliminary actions by pre-assigning virtual IP addresses to access points and pre-generating flow table entries based on these virtual addresses. When services are activated, the controller can quickly respond by updating existing flow tables with virtual IP mappings rather than processing complete real routing information, reducing controller load while maintaining service responsiveness.
3Measurement precision
If flow tables correlate with device count, then routing precision is improved, but network scalability deteriorates
Solution Approach 1:
The patent changes the parameter basis for flow table generation from real device addresses to virtual IP addresses. This parameter transformation allows the system to maintain routing precision through virtual-to-real address mapping while decoupling the number of flow tables from the actual device count, thereby improving network scalability.
Data Source
AI summary
The present disclosure relates to a flow table processing method. The method comprises: obtaining a type of an access point in a target branch network of a software defined wide area network, and determining a first access point and a second access point in the target branch network; obtaining preset address information assigned to the first access point; generating a flow table of the second access point based on the preset address information; and sending the flow table to the second access point, to cause the second access point to transmit data in the target branch network based on the flow table