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Zorluk: OrtaSoftware-Defined Architectures: Overlay, Underlay, and Fabric

Match each software-defined architecture component or protocol on the left with its corresponding operational role within a Cisco enterprise fabric on the right.

  • VXLANEncapsulates Layer 2 frames into Layer 3 UDP packets to form data plane tunnels between fabric edge nodes.
  • LISPMaintains the control plane database mapping Endpoint Identifiers (EIDs) to Routing Locators (RLOCs).
  • Underlay NetworkProvides underlying physical connectivity and Layer 3 IP routing to ensure transport reachability between fabric nodes.
  • Cisco DNA CenterFunctions as the centralized management plane interface to orchestrate automation, design, and fabric policies.

Cevap

VXLAN pairs with data plane frame encapsulation via UDP tunnels; LISP pairs with control plane mapping of EIDs to RLOCs; Underlay Network pairs with physical connectivity and Layer 3 IP routing reachability; Cisco DNA Center pairs with centralized management plane orchestration and policy automation.
VXLAN handles data plane encapsulation by tunneling Layer 2 Ethernet frames over Layer 3 UDP headers. LISP functions as the fabric control plane mapping protocol connecting EIDs to RLOCs. The underlay network consists of the physical devices and IP routing protocols that provide base reachability across switches. Cisco DNA Center serves as the centralized management controller responsible for network automation, provisioning, and policy management.

Adım Adım Çözüm

1
Identify the data plane overlay tunneling mechanism.
VXLAN uses MAC-in-UDP encapsulation to build overlay tunnels across Layer 3 boundaries.
Overlay data planes require encapsulating original host frames so they can cross intermediate routed infrastructure transparently.
2
Identify the control plane protocol responsible for host mapping.
LISP maintains the mapping database connecting host IP/MAC addresses (EIDs) to their switch location (RLOCs).
Separating host location from identity minimizes flooding and enables endpoint mobility.
3
Identify the infrastructure base supporting overlay communication.
The underlay network provides basic IP routing connectivity between physical switch interfaces.
Fabric nodes must establish IP reachability via IGP routing protocols prior to forming overlay tunnels.
4
Identify the centralized management platform.
Cisco DNA Center manages policy, orchestration, and provisioning across the fabric.
Management plane platforms aggregate controller operations into a single interface for intent-based network management.

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Software-Defined Architectures: Overlay, Underlay, and Fabric plane separation
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Software-Defined Architectures: Overlay, Underlay, and Fabric

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