300-415 Question 99
Select 4An enterprise network running Cisco SD-WAN has multiple vEdge routers deployed across branches. A branch vEdge router is unable to establish a control plane connection with the vSmart controller. You are tasked with troubleshooting the issue. Which of the following steps will help you identify the root cause?
- A
Verify that the vEdge router has the correct system IP configured.
- B
Check the validity of the vEdge's certificate and whether it is properly installed.
- C
Ensure that the vEdge router's TLOC color matches the vSmart controller's TLOC color.
- D
Inspect network connectivity between the vEdge and vSmart controller using ping or traceroute.
- E
Confirm that the vSmart controller has the vEdge router's serial number listed in its whitelist.
Show answer and explanation
Correct answers: A, B, D, E
Explanation
To troubleshoot control plane connectivity between a vEdge router and the vSmart controller, it is essential to verify basic configuration settings like the system IP and certificate validity, check network connectivity, and ensure the vEdge is authorized by the vSmart. TLOC color is unrelated to control plane connectivity, making it an incorrect option.
- A. Correct.
The vEdge system IP must be correctly configured, as it is used to uniquely identify the device and establish control plane connections.
- B. Correct.
The vEdge's certificate is critical for authentication. If the certificate is invalid or missing, the control plane connection cannot be established.
- C. Incorrect.
The TLOC color does not need to match between the vEdge and the vSmart controller. TLOC color is used for data plane traffic routing, not control plane connectivity.
- D. Correct.
Network connectivity issues between the vEdge and the vSmart controller can prevent the control plane connection. Using tools like ping or traceroute can help identify such issues.
- E. Correct.
The vSmart controller must have the vEdge's serial number in its whitelist. If the serial number is not listed, the vEdge will be unable to establish a control plane connection.