Match each Cisco Software-Defined Architecture component or protocol on the left with its corresponding architectural role or operational function on the right.
- Physical Routed UnderlayProvides underlying IP reachability between network switches using traditional routing protocols without tracking endpoint locations.
- VXLAN Overlay Data PlaneEncapsulates Layer 2 frames into UDP packets (port 4789) to transport tenant traffic securely across the network infrastructure.
- LISP Fabric Control PlaneMaintains the centralized mapping database correlating Endpoint Identifiers (EIDs) to Routing Locators (RLOCs).
- Fabric Edge NodeConnects user endpoints to the fabric, authenticates host attachments, and initiates overlay encapsulation toward destination RLOCs.
Cevap
The Physical Routed Underlay provides transport IP reachability via traditional routing protocols; the VXLAN Overlay Data Plane encapsulates data frames into UDP packets; the LISP Fabric Control Plane manages the mapping database between Endpoint Identifiers (EIDs) and Routing Locators (RLOCs); and the Fabric Edge Node authenticates endpoints and initiates overlay encapsulation.
In software-defined fabric architectures, responsibilities are strictly divided: the physical routed underlay provides IP transport for fabric nodes using standard IGPs; VXLAN handles data plane encapsulation of user traffic into UDP tunnels; LISP acts as the control plane to map host identities (EIDs) to switch locations (RLOCs); and Fabric Edge nodes interface directly with endpoints to perform authentication and overlay encapsulation.
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Software-Defined Fabric Architecture: Separation of Underlay, Overlay Data Plane, Control Plane, and Edge Roles
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