Software Defined Networking

Question 1

Is IS-IS a control or data plane protocol? Explain Why.

Answer 1

control – this is used to calculate routes that allow routers to later forward data packets, but does not carry data for any application

Question 2

Is IP a control or data plane protocol? Explain Why.

Answer 2

data. the actual IP packets that are forwarded by routers are the packets that contain application data

Question 3

Is UDP a control or data plane protocol? Explain Why.

Answer 3

data. similar to IP these UDP packets contain application data

Question 4

Is DHCP a control or data plane protocol? Explain Why.

Answer 4

control – this is used to automatically assign IP addresses to end hosts (and sometimes subnet and DNS server locations as well), which is required for that end host to then be able to send and receive data packets, but DHCP messages do not contain any application data themselves.

Question 5

Is 802.11(WiFi) a control or data plane protocol? Explain Why.

Answer 5

data – this is a link layer protocol that carries data for applications or higher level protocols (which would be considered “data” by the link layer, even if they are not data at the application layer)

Question 6

Network Management

Answer 6

the Process of configuring the network to achieve a variety of tasks such as:
§ Load Balancing
§ Security
§ Business Relationships

Question 7

3 things provided by SDN

Answer 7

Network-wide views of topology and traffic
Ability to satisfy network-level objectives
Load balance
Security
Direct Control
An operator can write a control program that
directly affects the data plane

Question 8

Function of the Data Plane

Answer 8

Forward Traffic according to control plane logic.

Question 9

Function of the Control Plane

Answer 9

Compute Routing Tables.

Contains Logic that controls forwarding behavior.