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Zorluk: OrtaComparing Traditional Networks with Controller-Based Networking

Match each architectural concept to its corresponding description within traditional and controller-based networking environments.

  • Southbound Interface (SBI)Enables communication between the SDN controller and network forwarding devices, using protocols such as NETCONF, RESTCONF, or OpenFlow.
  • Northbound Interface (NBI)Enables communications between the SDN controller and external applications or orchestration software, typically utilizing RESTful APIs.
  • Distributed Control PlaneProcesses routing logic independently on each individual device, requiring per-device configuration and local neighbor state maintenance.
  • Centralized Control PlaneConsolidates topology intelligence into a single controller that calculates policy decisions and pushes forwarding rules to network nodes.

Cevap

Southbound Interface pairs with communication between controller and forwarding elements via protocols like NETCONF/OpenFlow. Northbound Interface pairs with RESTful API communication between controller and applications. Distributed Control Plane pairs with autonomous per-device processing. Centralized Control Plane pairs with consolidated global topology control.
The correct pairings accurately map interface directions and control plane locations: Southbound Interfaces interact downwards with physical or virtual network devices via protocols such as NETCONF, RESTCONF, or OpenFlow; Northbound Interfaces interact upwards with applications and management suites using REST APIs; Distributed Control Planes compute logic independently per device; and Centralized Control Planes aggregate network intelligence into a controller to manage policies centrally.

Adım Adım Çözüm

1
Identify controller communication directionality (Northbound vs. Southbound).
Northbound interfaces point up toward applications/REST APIs; Southbound interfaces point down toward network switches/routers using protocols like NETCONF, RESTCONF, or OpenFlow.
Establishing API directional planes differentiates controller-based interface functions.
2
Differentiate control plane placement (Distributed vs. Centralized).
Traditional distributed control planes compute routing tables locally on every switch/router, whereas controller-based centralized control planes consolidate network logic within a central controller.
Locating control plane logic is the fundamental structural distinction between traditional and SDN-based network architectures.

Anahtar Kavram

Architectural Plane and Interface Separation in Traditional vs. Controller-Based Networks
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Konular

Comparing Traditional Networks with Controller-Based Networking

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