A municipal hospital campus must explain to leadership why both LISP and VXLAN appear in the SD-Access fabric story. Which division of roles is accurate?
Select an answer to reveal the explanation.
Short Explanation
LISP is the phone book—“where does this endpoint live?”—and VXLAN is the shipping carton that wraps the frame across the underlay. SD-Access needs both: mappings in the control plane, encapsulation in the data plane. Mixing those jobs up confuses every design review.
Full Explanation
In Cisco SD-Access, LISP functions as the fabric control plane that maps endpoint identifiers to routing locators (RLOCs/VTEPs). VXLAN encapsulates Ethernet frames across the underlay between fabric nodes for the data plane. Underlay routing remains separate; neither LISP nor VXLAN is merely an AAA or WAN crypto substitute in this architecture.