ADAPTIVE ROUTING OF BRANCH TRAFFIC IN SOFTWARE-DEFINED WIDE AREA NETWORK (SDWAN) DEPLOYMENTS

• Main Authors: Muthiah, Sivappirakasam, GS, Manjunatha, Theogaraj, Isaac
• Format: Patent
• Language: English
• Published: 10.09.2020
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; PHYSICS; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

A method including selecting, with a network orchestrator, a first virtual internet gateway (VIG) as a primary VIG for a branch gateway, is provided. The method includes selecting a second VIG as a secondary VIG for the branch gateway. The method includes monitoring roundtrip times for multiple packets between the primary VIG and the branch gateway, and between the secondary VIG and the branch gateway, and determining a first forecast roundtrip time associated with the connection between the primary VIG and branch gateway, as well as determining a second forecast roundtrip time associated with the connection between the secondary VIG and the branch gateway. The method includes selecting a new primary VIG based on the first forecast roundtrip time and the second forecast roundtrip time, and further based on a skew of active branches between the primary VIG and the secondary VIG.