What is a VPN in a Cisco SD-WAN deployment?

Question

Options

• Acommon exchange point between two different services
• Battribute to identify a set of services offered in specific places in the SD-WAN fabric
• Cvirtualized environment that provides traffic isolation and segmentation in the SD-WAN fabric
• Dvirtual channel used to carry control plane information

• A
  6% (2)
• C
  91% (29)
• D
  3% (1)

Explanation

VPN in Cisco SD-WAN

In Cisco SD-WAN, a VPN functions as a virtualized network segment that isolates and separates traffic flows within the fabric - similar to VRFs (Virtual Routing and Forwarding) in traditional networking - allowing different departments, services, or customers to share the same physical infrastructure without their traffic mixing. This makes option C correct, as VPNs are the primary mechanism for traffic segmentation and isolation across the SD-WAN overlay.

Why the distractors are wrong:

• A describes a peering or interconnection point (more like an IXP or service chaining concept), not a VPN
• B describes a tag or service attribute, which aligns more with SD-WAN concepts like localized policies or service labels, not VPNs
• D describes an OMP (Overlay Management Protocol) session or a control plane tunnel - VPNs carry data plane traffic, not control plane information

Memory Tip: Think of SD-WAN VPNs like floors in a building - everyone shares the same structure (physical network), but each floor (VPN) is completely separated. VPN 0 is always the transport/control VPN, and VPN 512 is management - all others are for user traffic segmentation.

No community discussion yet for this question.