VMware SD-WAN by VeloCloud Specialist — Question 1

A customer is migrating a branch site with a VMware SD-WAN Edge replacing the CE. The Edge will have both MPLS and internet links.
MPLS underlay is the preferred path for communication from this site to branch sites that have no VMware SD-WAN Edges. Communication from this site to branch sites that have VMware SD-WAN Edges should go through overlay.
Which design should be used to prevent this branch site from becoming a transit site?

Answer options

• A. Use BGP as the routing protocol on the Edge, flag its BGP neighbor to PE as Uplink, and advertise overlay prefixes over Uplink.
• B. Use BGP as the routing protocol on the Edge, and flag its BGP neighbor to PE as Uplink.
• C. Use OSPF as the routing protocol on the Edge, and put the LAN connected to the Edge in a stub area.
• D. Use OSPF as the routing protocol on the Edge, and put the LAN connected to the Edge in a totally stub area.

Correct answer: A

Explanation

Option A is correct because it ensures that the overlay prefixes are advertised while preventing the branch site from functioning as a transit site. Options B, C, and D do not provide the necessary configuration to control routing behavior effectively, which is essential for maintaining the desired communication paths.