Contents We Will Cover
What is SDN
How does
SDN work?
What are the
challenges of
SDN?
SDN architecture
What are the
benefits of SDN?
SDN use cases
WHAT IS SDN
 Software-defined networking (SDN) is an
SDN
architecture that abstracts different, distinguishable
layers of a network to make networks agile and
flexible.
SDN architecture
 A typical representation of SDN architecture
comprises three layers: the application layer, the
control layer and the infrastructure layer. These
layers communicate using northbound and
southbound application programming interfaces
SDN architecture
 The application layer contains the typical network
applications or functions organizations use. This
can include intrusion detection systems, load
balancing or firewalls.
SDN architecture
 The control layer represents the centralized SDN
controller software that acts as the brain of the
software-defined network.
SDN architecture
 The infrastructure layer is made up of the
physical switches in the network. These switches
forward the network traffic to their destinations.
How does SDN work?
 SDN encompasses several types of technologies,
including functional separation, network
virtualization and automation through
programmability.
What are the benefits of SDN?
What are the benefits of SDN?
 Simplified policy changes
 With SDN, an administrator can change any
network switch's rules when necessary -prioritizing, deprioritizing or even blocking specific
types of packets with a granular level of control and
security.
Challenges of SDN
01
02
03
04
Security
Unclear definition
Market
confusion
Slow adoption and
costs
Some networking
initiatives are
often mistaken
for SDN,
SDN technology
emerged with a lot
of hype around
2011 when it was
introduced
alongside the
OpenFlow protocol.
Security is both a
benefit and a
concern with SDN
technology.
Another challenge
with SDN is the
industry really has
no established
definition
of software-defined
networking.
SDN use cases
DevOps
SDN can
facilitate DevOps by
automating application
updates and deployments.
Service provider
networks.
SDN helps service
providers simplify and
automate
Campus networks
SDN controllers can
benefit campus networks
by offering centralized
management
Data center
security.
SDN supports more
targeted protection and
simplifies firewall
administration.
Any
Question
?
References Link:
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1/7/2023
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