2.2 - Software Defined Networking

Question 1

SDN (Software Defined Networking)

Answer 1

• Networking devices have different functional
  planes of operation
  – Data, control, and management planes
• Split the functions into separate logical units
  – Extend the functionality and management
  of a single device
  – Perfectly built for the cloud
• Infrastructure layer / Data plane
  – Process the network frames and packets
  – Forwarding, trunking, encrypting, NAT
• Control layer / Control plane
  – Manages the actions of the data plane
  – Routing tables, session tables, NAT tables
  – Dynamic routing protocol updates
• Application layer / Management plane
  – Configure and manage the device
  – SSH, browser, API

Question 2

SDN data flows

Answer 2

Question 3

SDN: Extend the physical architecture

Answer 3