Software Defined Networking

Question 1

What does SDN stand for?

Answer 1

Software Defined Networking.

Question 2

What are the three functional planes in SDN?

Answer 2

The three functional planes are:

1.	Data plane
2.	Control plane
3.	Management plane

Question 3

How does SDN split the functions of networking devices?

Answer 3

SDN splits the functions into separate logical units, extending functionality and management for devices.

Question 4

Why is SDN considered suitable for cloud environments?

Answer 4

SDN is perfectly built for the cloud due to its logical separation of functions, allowing better flexibility and control.

Question 5

What is the role of the Infrastructure layer / Data plane in SDN?

Answer 5

It processes the network frames and packets, including forwarding, trunking, encrypting, and NAT

Question 6

What is the function of the Control layer / Control plane in SDN?

Answer 6

It manages the actions of the data plane, including routing tables, session tables, NAT tables, and dynamic routing protocol updates.

Question 7

What tasks does the Application layer / Management plane perform in SDN?

Answer 7

It configures and manages the device using tools like SSH, browser, and API

Question 8

How do data flows work in SDN

Answer 8

Data flows through dynamic routing protocols between the control and data planes, and management protocols like SSH, SNMP, and API configure the devices.

Question 9

What are the three parts of a network box

Answer 9

1- application manager
2- control layer/ control plane
3- infrastructure plane/data plane