You may hear of SDN before, but do you know the detailed features of SDN? This blog will take you to deep dive into the world of SDN, which is required in the Cisco technology. Why Software-defined networking (SDN)? Enterprises, Organizations, as well as service providers, would be surrounded by several competing forces. If you want to find a problem that would be coping with unpredictable traffic patterns, large data centers would be demanded. These traffic patterns would be causing a very high demand for particular resources. That they wouldn’t be meeting with existing network infrastructure. So there are going to be two choices: Scaling network infrastructure for meeting the peaks, which would be very expensive and complex. Or you could be building a network in such a way that it could be reconfigured automatically to cope up with those peaks as well as the channel for meeting appropriate demands. That’s where SDN would be coming into existence. If you want to learn more about the SDN, follow SPOTO and contact us to get the latest technology information! What is SDN? Software-defined networking, shortly known as the SDN, is considered to be a unique approach or an umbrella term for cloud computing as well as networking. It would simplify the management of the network and enable the programmatically efficient configuration of a network to improve the performance of networks and monitoring results. Software-defined networking would be emphasized on the fact that the basic architecture of the traditional network is considered to be so much complex as well as decentralized while the present network would be requiring more flexible architecture with a simple troubleshoot option. Software-defined networking would be recommending centralization of network intelligence by withdrawing the forwarding process of network packets, data packets, from the routing process, control process. Check out the training courses of SPOTO Club to gain more knowledge regarding the same. Software-defined networking (SDN) Architecture Software-defined networking architecture layers would be consisting of 3 layers. The Application Layer The Control Layer The Infrastructure Layer The Application Layer The application layer would be containing programs that programmatically and explicitly would be communicating their desired network behavior as well as network requirements to the SDN Controller. The Control Layer The SDN Controller is considered to be the mid-layer that would be connecting the application layer and the infrastructure layer. The northbound interface is considered to be the connection between the controller and applications. In contrast, the southbound interface would be considered as the connection between the controller and the infrastructure layer. This layer would be processing the instructions as well as requirements sent by the application layer, through the southbound interface and proceed them to the networking components, through a northbound interface. It would also be communicated backing necessary information which would be extracted from the networking devices to the application for it function optimally. The Infrastructure Layer This consists of networking devices that would be controlling the forwarding as well as data processing capabilities for the network. The devices would be responsible for handling packets, which would be based on the rules which would be provided by a controller. It is the physical layer responsible for collecting the network statuses like the traffic statistics, network usage, network topology, etc. and send them to the control layer. The SDN Architecture would have the following features: Directly Programmable Network control could be directly programmable as it would be decoupled from forwarding functions. Centrally Managed In Software-based SDN controllers, network intelligence is centralized, maintaining an overall view of the network. Agile Abstracting control from forwarding letting admin allows managing network-wide traffic flow dynamically for meeting the changing requirements. Programmatically Configured In SDN, network managers would be able to manage, secure, configure, as well as optimize resources of the network quickly and easily. Vendor-Neutral SDN Implementation instructions would be provided by SDN controllers instead of vendors as well as protocols. So it is considered to be Vendor neutral. Hence, Software-defined networking technology is believed to be ideal for customers who would be having faced rapid changes in their day to day network load. For more details regarding the SDN, you should opt for the training courses offered at the SPOTO Club.

The bigger promise of software-defined networking (SDN) is that it'll centralize and simplify control of enterprise network management. Lots of vendors would be claiming differently, but the most commonly quoted advantages of software-defined networking would be traffic programmability, greater agility, the ability to create policy-driven network supervision, and implementing network automation. For more details on SDN, you should opt for the training courses offered at the SPOTO Club. Below mentioned are some of the advantages of software-defined networking: 1. Centralized network provisioning. Software-defined networks would be providing a centralized view of the entire network, making it would be quite easier to centralize enterprise management and provisioning. Through abstracting the control and data planes, SDN might be accelerating service delivery and providing more agility in provisioning virtual and physical network devices from a central location. 2. Holistic enterprise management. Enterprise networks need to establish new applications and virtual machines on-demand to accommodate new processing requests like those for big data. SDN would be allowing IT managers to experiment with network configuration without impacting the network. SDN would also support the management of physical and virtual switches and network devices from a central controller, something you couldn't do with SNMP. SDN would be providing a single set of APIs for creating a single management console for physical as well as virtual devices. 3. More granular security. One of the advantages of security defined networking that would be appealing most to IT managers would be centralized security. Virtualization has made network management much more challenging. With virtual machines going and coming as part of physical systems, it is considered to be more difficult for consistently applying firewall and content filtering policies. When you would be adding in complexities like securing BYOD devices, the security problem would be compounded. 4. Lower operating costs. Administrative efficiency, improvements in server utilization, better control of virtualization, as well as other benefits, should be resulting in operational savings. Although it might still be early for showing real proof of savings, SDN should lower overall operating costs and end in administrative savings since many of the routine network administration issues might be automated and centralized. 5. Hardware savings and reduced capital expenditures. Adopting SDN could also be giving new life for existing network devices. SDN would be making it easier for optimizing the commoditized hardware. Existing hardware can be repurposed for mounting instructions from the SDN controller, and less expensive hardware could be deployed to greater effect. Because new devices essentially become white box switches with all the intelligence which would be centered at the SDN controller. 6. Cloud abstraction. Cloud computing is here to stay, and it is going to be evolving into a unified infrastructure. By abstracting cloud resources utilizing software-defined networking, it would be easier to unify cloud resources. The networking components that would be making up massive data center platforms could all be managed from the SDN controller. 7. Guaranteed content delivery. The ability to shape as well as control data traffic is considered to be one of the primary advantages of software-defined networking. Being able to automate and direct data traffic makes it easier for implementing quality of services (QoS) for voice over IP as well as multimedia transmissions. A high-quality video streaming would be easier because SDN would improve network responsiveness to ensure flawless user experience. For more details regarding the SDN and about Cisco Certification, you should opt for the training courses offered at the SPOTO Club. When it comes to IT Certification, SPOTO Club is the best training provider for the same.