Refer to the exhibit. A WAN Edge device cannot connect to SD-WAN Validator; however, can ping it. Which action resolves the issue?

The ability to ping the SD-WAN Validator confirms that its IP address is correct and reachable from the WAN Edge, ruling out an incorrect IP as the root cause.

Modifying the system IP on the WAN Edge device is a logical identifier change and would not directly resolve a failure to establish a secure control connection when basic network reachability (ping) is confirmed.

In Cisco SD-WAN, control plane connections (DTLS/TLS) between WAN Edges and the SD-WAN Validator (vBond) are secured using certificates; if the WAN Edge lacks the correct root certificate to validate the Validator's certificate, the secure connection will fail despite basic IP connectivity.

Switching the peer protocol between DTLS and TLS does not address the underlying issue of certificate validation, as both protocols rely on properly installed and trusted certificates for secure communication.