Cisco
300-415 · Question #101
300-415 Question #101: Real Exam Question with Answer & Explanation
The correct answer is D: Restore the reachability to the vSmart. When a control connection between a WAN Edge (or controller) and vSmart is failing, restoring IP reachability to vSmart is the foundational fix because no control plane session can be established without underlying network connectivity.
Management and Operations
Question
Refer to the exhibit. The control connection is failing. Which action resolves the issue?
Options
- AImport vSmart in vManager.
- BValidate the certificates authenticity on vSmart
- CUpload the WAN Edge list on vManage.
- DRestore the reachability to the vSmart
Explanation
When a control connection between a WAN Edge (or controller) and vSmart is failing, restoring IP reachability to vSmart is the foundational fix because no control plane session can be established without underlying network connectivity.
Common mistakes.
- A. Importing vSmart in vManage is an administrative onboarding step - if vSmart is already operational and the issue is a failed control connection, re-importing does not fix underlying reachability or connectivity problems.
- B. Validating certificate authenticity addresses authentication failures after a connection is established at the transport layer - it does not help if vSmart is unreachable.
- C. Uploading the WAN Edge list on vManage is required for device authorization, not for resolving a control connection failure between already-configured controllers.
Concept tested. Cisco SD-WAN control connection troubleshooting and reachability
Topics
#SD-WAN Troubleshooting#vSmart Controller#Control Plane Connectivity#Network Reachability
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