300-415 Question 25
Select 3An enterprise has deployed Cisco SD-WAN in its network and is using vSmart controllers to manage routing policies. During a network outage, one of the vEdges reports that it is missing a specific route to a remote branch. Upon investigation, it is discovered that the vRoute for the remote branch is not being advertised to this vEdge. What could be the possible reason for this issue?
- A
The vSmart policy is not configured to advertise the route to the affected vEdge.
- B
The remote branch vEdge is not advertising its routes to the vSmart controller.
- C
The vEdge device is not authenticated with the vManage controller.
- D
The control plane connectivity between the vEdge and vSmart is down.
- E
The vRoute for the remote branch was filtered out by a data policy on the vEdge.
Show answer and explanation
Correct answers: A, B, D
Explanation
vRoutes in Cisco SD-WAN are distributed by the vSmart controller to vEdge devices, enabling communication across the network. If a route is missing, the issue could stem from incorrect vSmart policies, a lack of route advertisement from the remote branch to vSmart, or control plane connectivity issues between the vEdge and vSmart. Understanding the roles of vSmart, vManage, and vEdge, as well as the difference between control and data policies, is crucial for diagnosing such issues.
- A. Correct.
Correct: The vSmart controller may have a policy misconfiguration that prevents the route from being advertised to the affected vEdge.
- B. Correct.
Correct: If the remote branch vEdge is not advertising its routes to the vSmart controller, the vSmart will not have the vRoute to share with other vEdges.
- C. Incorrect.
Incorrect: Authentication with vManage is related to device onboarding and management, not vRoute advertisement or propagation.
- D. Correct.
Correct: If the control plane connectivity between the affected vEdge and the vSmart controller is down, the vEdge cannot receive vRoutes from vSmart.
- E. Incorrect.
Incorrect: Data policies on the vEdge only affect traffic forwarding, not route advertisement or reception from vSmart.