Connectivity
Software Defined Network (SDN)
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It is a network architecture approach that enables the network to be intelligently and centrally controlled or "programmed" using software applications.
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This model differs
from traditional network which use dedicated and hardware devices to control the network traffic.
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SDN
can create and control a virtual network or control a traditional hardware via software.
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This helps operators
manage the entire network consistently and holistically regardless of the underlying network technology.
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Benefits
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Increased Control with greater Speed & Flexibility
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Developers can control the flow of traffic over a network simply by
Controlled Access to Company's Resources
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Organizations can deliver connectivity to applications and data that's controlled and seecured by perimeter and internal firewalls.
Higher Productivity
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For streamlined test with collaboration tools and version control to private cloud orchestration with cloud based applications and an agile internal firewall, modern networking can dramatically improve employee productivity.
Lower Costs
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The combination of server and network virtualization enables businesses to maximize the efficient allocation of resources across on-premises and cloud infrastructure.
SDN
Three parts that make up a typical SDN which may be located in different physical locations
APPLICATION
which communicates resources requests or information about the network as a whole
CONTROLLERS
which use the information from applications to decide how to route a data packet.
NETWORKING DEVICES
which receive information from the controller about where to move the data
Physical or virtual networking devices actually move the data through the network. Virtual switches may be embedded in either the software or the hardware, then take over the responsibilities of physical switches and consolidate their function into a single.
Benefits
Centrally Managed
Data can moved easily between distributed locations which is critical for cloud applications.
Ease of Management
Support moving workloads around a network quickly.
Isolation and Traffic Control
Service providers can use a virtual network infrastructure to shift workloads from private to public cloud infrastructure as necessary.
Scalability
Makes it easier for any network to flex and scale as network administrators add or remove virtual machines whether those machines are on-premises or in the cloud.
Speed and Flexibility
Able to support emerging trends and technologies such as edge computing and Internet of Thins (IoT) which require transferring data quickly and easily between remote sites.
Developers can control the flow of traffic over a network simply by programming an open standard software-based controller
Administrators can configure network and allocate virtual resources to change the network infrastructure in real time through one centralized location.
SDN offers clear advantages over traditional networking with the proliferation of smart devices that connect to the internet.