Cisco
300-415 · Question #402
300-415 Question #402: Real Exam Question with Answer & Explanation
The correct answer is D: The gateway router for the WAN Edge device must be able to reach ztp.viptela.com.. PnP provisioning for Cisco SD-WAN devices requires the WAN Edge to reach the ZTP server and possess a valid device certificate for authentication and secure communication.
WAN Edge Router Deployment
Question
What are the two requirements for plug-and-play provisioning on Cisco IOS XE SD-WAN devices? (Choose two.)
Options
- ADevices at branch offices must be able to reach the Cisco SD-WAN vSmart controller at the headquarters site.
- BThe gateway router for the WAN Edge device must be able to reach devicehelper.cisco.com.
- CThe gateway router for the WAN Edge device must be able to reach public DNS servers.
- DThe gateway router for the WAN Edge device must be able to reach ztp.viptela.com.
- EThe WAN Edge device must have a valid certificate.
Explanation
PnP provisioning for Cisco SD-WAN devices requires the WAN Edge to reach the ZTP server and possess a valid device certificate for authentication and secure communication.
Common mistakes.
- A. While vSmart connectivity is crucial for a fully provisioned SD-WAN fabric, it's not a prerequisite for the initial PnP provisioning process itself; PnP first establishes connectivity to vBond.
- B. devicehelper.cisco.com is not directly involved in the standard PnP process for Cisco SD-WAN devices to discover the vBond or retrieve initial configurations.
- C. While DNS resolution is generally required for internet access, the specific requirement for PnP is to resolve ztp.viptela.com, which implies access to any functional DNS, not specifically "public DNS servers" as a distinct requirement.
Concept tested. Cisco SD-WAN ZTP/PnP requirements
Topics
#SD-WAN Provisioning#Zero Touch Provisioning#WAN Edge Deployment#Device Authentication
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