Cisco
300-415 · Question #106
300-415 Question #106: Real Exam Question with Answer & Explanation
The correct answer is A: Enter a valid serial number on the controllers for a given device. Control connection tear-downs, even with a valid certificate serial number, often indicate a mismatch in other device identification parameters between the WAN Edge and the controllers.
Router Deployment
Question
Refer to exhibit. An engineer is troubleshooting tear down of control connections even though a valid CertificateSerialNumber is entered Which two actions resolve the issue? (Choose two)
Options
- AEnter a valid serial number on the controllers for a given device
- BRemove the duplicate IP in the network.
- CEnter a valid product ID (model) on the PNP portal
- DMatch the serial number file between the controllers
- ERestore network reachability for the controller
Explanation
Control connection tear-downs, even with a valid certificate serial number, often indicate a mismatch in other device identification parameters between the WAN Edge and the controllers.
Common mistakes.
- B. While duplicate IPs can cause connectivity issues, the problem specifies a valid certificate serial number is entered, implying the issue is with control plane identity or registration, not basic IP reachability.
- D. Matching the serial number file between controllers is related to controller-to-controller synchronization, not the initial control connection establishment of a single WAN Edge device.
- E. If network reachability were entirely absent, the control connection would not initiate to tear down based on certificate serial number validation; the issue implies a deeper identity or registration problem.
Concept tested. SD-WAN device onboarding and control connection prerequisites
Topics
#SD-WAN Onboarding#Control Plane Troubleshooting#Device Authentication#Plug and Play (PNP)
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