The Smart SD-WAN Architecture

Abstract

In this paper, we propose the Smart Software-Defined Wide Area Network (SD-WAN) Architecture, which combined the traditional SD-WAN and Segment Routing over IPv6 (SRv6) to realize an end-to-end SRv6 tunnel connection. Compared to traditional SD-WAN, the Smart SD-WAN can integrate with the underlay network to realize the collaboration of underlay and overlay. In this way, many services such as the ability of underlay network slicing when subscribers have bought the underlay network slicing service can be used. Furthermore, the Smart SD-WAN can provide differentiated, guaranteed Service Level Agreement (SLA) service and integrate virtual network elements in the cloud to provide service function chain (SFC).