Hi User,
The Huawei SD-WAN connects all nodes of an enterprise network. Branches can connect to other branches, to headquarters, to data centers, and to the cloud. The software of the SD-WAN is application-aware and accomplishes intelligent traffic steering of application traffic. Such traffic is sent on an optimal path across the network links depending on the way bandwidth is currently being used.
There are three layers to Huawei SD-WAN. At the top, there is the service presentation layer. Below that is the network orchestration and control layer. At the bottom is the network connection layer.
https://www.sdxcentral.com/wp-content/uploads/2019/11/Huawei-SD-WAN-Arch.jpg
The Huawei SD-WAN Architecture depicting its three layers. Source: Huawei
Service Presentation Layer
This layer is where network administrators perform end-to-end service configuration and processing of the SD-WAN. Huawei developed the dashboard, which is meant for carriers, managed service providers, and large enterprise customers (who are likely to have large IT staffs capable of self-managing the SD-WAN). The service presentation layer has open APIs that integrate the Huawei SD-WAN to third party portals, application stores, and any operations support system (OSS) or business support system (BSS).
Network Orchestration and Control Layer
The Huawei Agile Controller-Campus (AC-Campus) handles most of the functions in the Network Orchestration and Control Layer. Through it, traditional CPEs, universal CPEs (uCPEs), and virtual CPEs (vCPEs) are uniformly managed through the southbound HTTP 2.0 channel and NETCONF. The AC-Campus also has control over virtual overlay networks and can automatically deliver services. To communicate with the service presentation layer, the controller uses the northbound RESTful interfaces.
In the case of third-party value-added services (VASs) in a uCPE, a third-party element management system (EMS) can be integrated into the AC-Campus.
The virtual Route Reflector (vRR) is also in this layer and creates VPN route and tunneling information. This is done on-demand and is for securely connecting CPEs anywhere in the SD-WAN based on VPN topology policies as defined by network admins.
Network Connection Layer
The Network Connection Layer allows the various types of CPEs to act as gateways. Traditional CPEs or uCPEs can be used by enterprise headquarters and branches to connect to the SD-WAN. In other words, a CPE or uCPE connects enterprise locations to other enterprise locations. A vCPE is used as a gateway to public and private clouds. For branch gateways, MPLS, internet, and LTE links can be combined in multiple ways when connecting to the headquarters, data center, or clouds.
hope this answer helps you.