300-435 Question 136
Select 3A network administrator is tasked with deploying multiple branch routers using the Cisco Plug and Play (PnP) feature. The devices need to be onboarded automatically without manual intervention. During the process, the administrator observes that the routers are not connecting to the PnP server. Which of the following actions should the administrator take to resolve the issue and ensure successful onboarding?
- A
Verify that the DHCP server is configured to provide the option 43 with the PnP server details.
- B
Ensure that the routers have the correct startup configuration preloaded before deployment.
- C
Check that the PnP server is reachable through DNS or its IP address.
- D
Ensure that the routers are running the latest firmware that supports PnP.
- E
Confirm that the router serial numbers are registered on the PnP server.
Show answer and explanation
Correct answers: A, C, E
Explanation
Cisco Plug and Play (PnP) automates device onboarding by enabling routers to connect to a PnP server for configuration and deployment. For successful onboarding, the PnP server must be discoverable through DHCP option 43 or DNS, the server must be reachable, and the routers' serial numbers must be registered on the server. These steps ensure a seamless and automated deployment process, eliminating the need for manual configuration.
- A. Correct.
Option 1: Correct. DHCP option 43 is used to provide the PnP server's information to the devices during the onboarding process. Misconfiguration here can prevent routers from discovering the server.
- B. Incorrect.
Option 2: Incorrect. PnP does not require a preloaded startup configuration as its purpose is to automate the configuration process.
- C. Correct.
Option 3: Correct. If the PnP server is not reachable via DNS or IP, the devices cannot connect, resulting in a failed onboarding process.
- D. Incorrect.
Option 4: Incorrect. While having updated firmware is a best practice, it is not directly related to the issue of routers failing to connect to the PnP server.
- E. Correct.
Option 5: Correct. The PnP server checks the serial numbers of devices to authorize them for onboarding. If they are not registered, the process will fail.