In Cisco SD-Access, VXLAN provides which function?
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Correct answer: data plane forwarding.
Why this is the answer
In Cisco SD-Access, VXLAN (Virtual Extensible LAN) is used for data plane forwarding. It encapsulates Ethernet frames within UDP packets, allowing Layer 2 segments to be extended over a Layer 3 underlay network. This creates an overlay network that carries user traffic. Policy plane forwarding is handled by Cisco TrustSec, which uses Security Group Tags (SGTs) to enforce policies. Control plane forwarding is managed by LISP (Locator/ID Separation Protocol), which provides host mobility and reachability information. Systems management and orchestration are handled by Cisco DNA Center, which provides centralized management and automation for the SD-Access fabric.
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