Which statement about site discovery in a Versa Secure SD-WAN solution is true?

In the Versa Secure SD-WAN architecture, the Versa Controller acts as the centralized control plane. It functions as a Multi-Protocol BGP (MP-BGP) route reflector. When a new branch site (CPE) is provisioned and comes online, it establishes a secure control plane connection and an MP-BGP peering session with the Controller. The Controller then reflects the new site's reachability information, specifically its Transport Locators (TLOCs), to all other existing sites that are also peered with it. This MP-BGP route reflection mechanism enables existing sites to automatically learn about the new site and its WAN transport endpoints, facilitating dynamic, on-demand tunnel creation without manual intervention on existing devices.

A. This describes a static, manual process that is contrary to the automated and scalable nature of a software-defined WAN solution.

B. Versa Director is the management and orchestration plane, responsible for configuration and monitoring, not for real-time control plane notifications between sites.

C. The Controller does not "reconfigure" existing sites. It facilitates the dynamic exchange of routing and topology information via MP-BGP, which updates forwarding tables, not the device's base configuration.

1. Versa Networks

"Secure SD-WAN Configuration Guide": In the sections describing the control plane

it is detailed that the Versa Controller operates as a route reflector for MP-BGP. It states

"The controller advertises the TLOCs of a branch to other branches so that the branches can form IPsec tunnels between them." This process of advertising TLOCs via MP-BGP is the mechanism for auto-discovery. (Reference: Chapter on "Control Plane

" Section on "Overlay Service and Transport VPN (O-ST-VPN)").

2. Versa Networks

"Controller Deployment Guide": This guide specifies the role of the Controller in the architecture. It explains

"The Versa Controller is the control plane of the SD-WAN network... It uses MP-BGP to communicate with the CPE devices... The Controller acts as a BGP route reflector

reflecting routes learned from one branch to all other branches." This confirms that MP-BGP is the protocol used for disseminating site information for auto-discovery. (Reference: Section "Controller Architecture Overview").