Large enterprises typically have a global footprint spanning multiple geographical regions and often desire a Software-Defined Wide Area Network (SDWAN) for such multi-region deployments. A hierarchical SDWAN solution provides a simple, feature rich and scalable option for such deployments by dividing a network into regions and providing inter-region connectivity via border routers (BRs). However, SDWAN deployments typically enforce a strict hierarchy such that all inter-region traffic must flow through the border routers. Presented herein are techniques that address such challenges by providing for the ability to offload only critical traffic over a premium backbone, thereby keeping operational costs low. Further, the techniques allow for the ability to form several non-overlapping cliques via a connectivity graph, thereby alleviating bottlenecks at the border routers and providing extreme flexibility and control over the direction of inter-region traffic.
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Mahadevan, Satish; Ponnuru, Laxmikantha Reddy; Thoria, Samir; Agarwal, Vivek; and Kardame, Hamzah, "PREMIUM PATH OFFLOADING OF CRITICAL TRAFFIC AND DIRECT CONNECTIVITY CLIQUES IN HIERARCHICAL SDWAN NETWORKS", Technical Disclosure Commons, (April 20, 2022)