A fire district designs Cisco SD-WAN so transport underlays stay separate from departmental overlay routing. Which model correctly separates those planes?
Select an answer to reveal the explanation.
Short Explanation
Picture the fire district WAN like a highway versus the trucks on it. VPN 0 is the highway—the underlay circuits that Edges use to reach each other—while service VPNs are the cargo lanes that carry Fire Ops, EMS, and admin routes. Mix those jobs and you’ve tangled transport with departments.
Full Explanation
In Cisco SD-WAN, VPN 0 is the transport VPN used for underlay connectivity and control connections toward the controllers. Service VPNs hold customer or departmental overlay routing and are kept separate so civic prefixes do not share the transport table. Correct design keeps underlay attachments and TLOCs in VPN 0 while departmental routes live in one or more service VPNs.