Method and system of providing quality of experience visibility in an sd-wan

Abstract

In one aspect, a computerized method useful for providing quality of experience visibility in a software-defined networking in a wide area network (SD-WAN) includes the step of providing a path state machine. With the path state machine, the method establishes a set of flags configured to determine a path eligibility that meets a specified scheduling criteria for a path selection condition. The method provides a link state machine. With the link state machine, the method establishes another set of flags configured to determine a link eligibility that meets a scheduling criteria for an event reporting parameter.

What is claimed as new and desired to be protected by Letters Patent of the United States is: 
     
         1 . A computerized method useful for providing quality of experience visibility in a software-defined networking in a wide area network (SD-WAN) comprising:
 providing a path state machine;   with the path state machine, establishing a set of flags configured to determine a path eligibility that meets a specified scheduling criteria for a path selection condition;   providing a link state machine;   with the link state machine, establishing another set of flags configured to determine a link eligibility that meets a scheduling criteria for an event reporting parameter.   
     
     
         2 . The computerized method of  claim 1  further, wherein the link state machine determines that the path selection conditions are met before setting and clearing a flag. 
     
     
         3 . The computerized method of  claim 2 , wherein a network event is generated when the flag is set or cleared. 
     
     
         4 . The computerized method of  claim 3 , wherein an orchestrator displays a summary chart of a quality of a link as measured by the link state machine. 
     
     
         5 . The computerized method of  claim 4 , wherein the orchestrator displays a summary chart of a quality of the link as measured for a set of target metrics. 
     
     
         6 . The computerized method of  claim 5 , wherein a voice data network traffic, a video data network traffic, a transactional data network traffic or a bulk data network traffic are measured separately. 
     
     
         7 . The computerized method of  claim 6  further comprising:
 generating a quality score based on the target metrics and quality measurements. 
 
     
     
         8 . The computerized method of  claim 1 , wherein the path state machine comprises a finite state machine that runs periodically to monitor and update a state of set of paths between a set of network endpoints in the wide area network. 
     
     
         9 . The computerized method of  claim 2 , wherein the link state machine comprises another finite state machine that runs periodically to monitor and update the state of links in the wide area network. 
     
     
         10 . The computerized method of  claim 3 , wherein a link comprises a collection of paths to a remote network endpoint that originates from a common network source. 
     
     
         11 . A computer system useful for providing quality of experience visibility in a software-defined networking in a wide area network (SD-WAN) comprising:
 at least one processor configured to execute instructions;   a memory containing instructions when executed on the processor, causes the at least one processor to perform operations that:
 provide a path state machine; 
 with the path state machine, establish a set of flags configured to determine a path eligibility that meets a specified scheduling criteria for a path selection parameter; 
 provide a link state machine; 
 with the link state machine, establish another set of flags configured to determine a link eligibility that meets a scheduling criteria for an event reporting parameter. 
   
     
     
         12 . The computer system of  claim 11 , wherein the path state machine comprises a finite state machine that runs periodically to monitor and update a state of set of paths between a set of network endpoints in the wide area network. 
     
     
         13 . The computer system of  claim 11 , wherein the link state machine comprises another finite state machine that runs periodically to monitor and update the state of links in the wide area network. 
     
     
         14 . The computer system of  claim 11 , wherein a link comprises a collection of paths to a remote network endpoint that originates from a common network source.