Software Defined Networking Flashcards
What is Software-defined Networking (SDN)?
SDN is a networking approach that uses software controllers or APIs to control traffic on the underlying network infrastructure. It can manage a virtual network or a traditional hardware network with software.
How does SDN enhance network flexibility?
SDN moves the control plane to software, leaving the data plane in hardware. This allows for network control, configuration changes, resource provisioning, and capacity increases from a centralized interface without adding more hardware.
What is an API in the context of SDN?
API is a method that sends information back and forth between software applications and users, essentially facilitating interaction in the network.
What components are included in a typical SDN architecture?
A typical SDN architecture includes Applications (of the management plane), Controllers (of the control plane), and Network Devices (of the data plane).
How does SDN handle workloads and traffic?
SDN allows workloads to move easily between multiple locations, adjusts capacity based on demand, and ensures traffic bypasses any failed networking device for seamless operation.
How does SDN improve network provisioning?
SDN makes it easier to provision virtual networks on demand, allowing administrators to add or remove virtual machines as needed, whether they reside on-premises or in the cloud.
