2.2 – Network Devices: Software Defined Networking
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Questions and Answers

What is the primary function of the data plane in a networking device?

  • To facilitate communication between different interfaces (correct)
  • To manage configurations and settings of the device
  • To store historical traffic data for analysis
  • To provide a user interface for device management

What is the responsibility of the control layer in a software defined networking architecture?

  • To create tables for traffic routing and forwarding (correct)
  • To monitor network performance metrics
  • To execute the actual data forwarding actions
  • To interface with the user for management tasks

Which method is NOT commonly used to access the management plane of a device?

  • Application Programming Interface
  • Secure Shell
  • Simple Network Management Protocol
  • Windows Remote Desktop (correct)

How does software defined networking alter traditional network architecture?

<p>It allows for a modular architecture across multiple devices. (B)</p> Signup and view all the answers

What does the management plane allow administrators to do?

<p>Configure and manage device settings remotely (D)</p> Signup and view all the answers

What is a key characteristic of the control plane in software defined networking?

<p>It handles dynamic routing and creates forwarding tables. (B)</p> Signup and view all the answers

In a cloud-based infrastructure using software defined networking, what is created from the physical devices?

<p>A software-based version of network devices (D)</p> Signup and view all the answers

When traffic traverses different devices, which plane manages this communication?

<p>The data plane (B)</p> Signup and view all the answers

What is the primary function of the infrastructure layer in Software Defined Networking?

<p>To perform packet-level operations such as forwarding and encrypting (C)</p> Signup and view all the answers

Which component contains the routing and translation tables necessary for forwarding decisions in SDN?

<p>Control layer (C)</p> Signup and view all the answers

What role does the application layer play in managing networking devices?

<p>Logging and accessing the device through interfaces (D)</p> Signup and view all the answers

How does Software Defined Networking (SDN) transform traditional networking devices?

<p>By separating device functions into individual software components (C)</p> Signup and view all the answers

What is the significance of the term 'data plane' in the context of SDN?

<p>It performs the actual forwarding and processing of packets (D)</p> Signup and view all the answers

What technology enables access to networking devices for management purposes in SDN?

<p>Application Programming Interfaces (APIs) (D)</p> Signup and view all the answers

Which of the following is NOT a characteristic of the control layer in SDN?

<p>Responsible for packet encryption (C)</p> Signup and view all the answers

What happens when a network administrator SSHs into a router in the context of SDN?

<p>They are managing the device through the management plane (C)</p> Signup and view all the answers

Flashcards

Data Plane

The part of a network device that handles the actual forwarding of data packets.

Control Plane

The brain of a network device that manages routing tables, protocols, and forwarding decisions.

Management Plane

The interface used to manage and configure network devices.

Software Defined Networking (SDN)

A software-based network infrastructure that separates network functions into distinct layers.

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Data Plane in SDN

A communication layer in SDN responsible for data forwarding between devices.

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Control Plane in SDN

A communication layer in SDN that manages routing information and protocols.

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Management Plane in SDN

A communication layer in SDN that provides access for configuration and management.

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Modular Architecture in SDN

The ability to extend and customize network infrastructure using software-defined networking.

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Infrastructure Layer (Data Plane)

The layer responsible for handling all packet-level operations like forwarding, trunking, encryption, and Network Address Translation (NAT). It acts as the workhorse for data movement within a network.

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Control Layer (Control Plane)

The layer responsible for storing and managing network configurations like routing tables, forwarding tables, and NAT rules. It defines the routes and access rules for data packets.

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Application Layer (Management Plane)

The layer that allows users or administrators to configure and manage network devices. It provides interfaces like SSH or web consoles for interaction.

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Software Defined Networking (SDN) - Device Decomposition

The process of separating the functions of a traditional network device into individual, software-based components. It allows for greater flexibility and scalability in cloud environments.

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Network Management Using APIs

A method for managing and configuring network devices through APIs, rather than traditional CLI interfaces. It enables automated deployment and management.

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Study Notes

Cloud Networking and Software Defined Networking (SDN)

  • Cloud networking eliminates physical routers, switches, and other infrastructure devices.
  • Software Defined Networking (SDN) virtualizes networking components.
  • SDN separates networking device functions into layers:
    • Infrastructure Layer (Data Plane): Handles forwarding, trunking, encryption, and network address translation (NAT) at the packet level.
    • Control Layer (Control Plane): Contains routing protocols, forwarding tables (switches), and NAT tables (routers), directing traffic.
    • Management Layer (Management Plane): Provides device management via APIs (Application Programming Interfaces) & consoles (SSH, graphical interfaces).
  • Physical network devices (switches, routers, firewalls) are deconstructed into these three layers.
  • Data plane software emulates the forwarding and routing functionalities.
  • Control plane software creates/manages routing protocols and forwarding tables.
  • Management plane software allows device configuration.
  • SDN creates a new networking infrastructure within the cloud, modularized by layer (data, control, management).
  • SDN allows traffic flow between devices through data plane-based communication.
  • Control plane handles dynamic routing and forwarding table management.
  • Management plane is accessed for device management through mechanisms like SSH, SNMP, and APIs.

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Description

This quiz explores the concepts of Cloud Networking and Software Defined Networking (SDN). Learn about the different layers of SDN, including the Infrastructure, Control, and Management layers, and how they work together to optimize network functionality. Test your knowledge on how virtualization impacts networking components.

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