Software Defined Networking/ Networking/ Traditional Networking/ SDN Benefits
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The document discusses the transition from traditional networking to software-defined networking (SDN), highlighting SDN's advantages such as flexibility, cost savings, and improved network management. It emphasizes the differences between traditional hardware-based networks and the software-based approach of SDN, which allows for greater agility and centralized control. Additionally, it outlines key considerations for organizations transitioning to SDN, including the need for open standards and the ability to integrate with existing infrastructure.
Software Defined Networking/ Networking/ Traditional Networking/ SDN Benefits
- 1. 1 7/8/2020
- 2. 2 7/8/2020 Biomedical Engineering Student, Co-Chair Data Science BootCamp 1.0, IEEE Region10 SAC Member, IEEE Region10 Collabratec Coordinator, SDGs Regional Advocate, IEEE YESIST12 Maker Fair 2020 Ambassador, Microsoft Specialist.
- 3. 3 Session Outline: What is networking? Traditional Networking. Software Defined Networking and it’s Components. Why SDN is the best option? Features, Operations, Use case. Benefits of SDN. Companies shifting to SDN. 7/8/2020
- 4. Software Software is a set of instructions, data or programs used to operate computers and execute specific tasks. Opposite of hardware, which describes the physical aspects of a computer, software is a generic term used to refer to applications, scripts and programs that run on a device. Computer software, or simply software, is a collection of data or computer instructions that tell the computer how to work. This is in contrast to physical hardware, from which the system is built and actually performs the work. 4 7/8/2020
- 5. 5 Networking Networking is defined as the act of making contact and exchanging information with other people, groups and institutions to develop mutually beneficial relationships, or to access and share information between computers. A computer network is a group of computers that use a set of common communication protocols over digital interconnections for the purpose of sharing resources located on or provided by the network nodes (redistribution point or communication endpoint). 7/8/2020
- 6. Application Programming Interface API is the acronym for Application Programming Interface, which is a software intermediary that allows two applications to talk to each other. 6 7/8/2020
- 7. Architecture of a System 7 7/8/2020 Controller: The SDN controller is a logical entity that receives instructions or requirements from the SDN application layer and relays them to the networking components. Application Layer: SDN applications are programs that communicate behaviors and needed resources with the SDN controller via application programming interfaces (APIs). In addition, the applications can build an abstracted view of the network by collecting information from the controller for decision-making purposes.
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- 9. 9 Traditional Networking Traditional networking is rooted in fixed-function network devices, such as a switch or router. These devices each have certain functions that operate well together and support the network. If the network's functions are implemented as hardware constructs, then its speed is usually bolstered. Traditional networks often work well with proprietary provisioning software, but this software can’t be quickly modified as needed. 7/8/2020
- 10. Architecture of Traditional Networking 10 7/8/2020
- 11. Traits of Traditional Networking Traditional networking consists of the following traits: The functions of traditional networking are primarily implemented from dedicated devices, using one or more switches, as well as routers and application delivery controllers. The functionality of traditional networking is largely implemented in dedicated hardware, such as application-specific integrated circuits (ASIC). One of the negative aspects of this traditional hardware-centric networking is its limitations. 11 7/8/2020
- 12. Software Defined Networking Software-defined networking technology is an approach to network management that enables dynamic, programmatically efficient network configuration in order to improve network performance and monitoring, making it more like cloud computing than traditional network management. SDN Diagram: In SDN, the network forwarding functions are separated from the control functions. This enables programmable networks that can rapidly adapt to business applications. 12 7/8/2020
- 13. 13 7/8/2020 SDN vs Traditional Networking
- 14. 14 7/8/2020 SDN vs Traditional Networking
- 15. SDN vs Traditional Networking The most notable difference between SDN and traditional networking is that SDN is software-based while traditional networking is usually hardware-based. Because it is software-based, SDN is more flexible, allowing users greater control and ease for managing resources virtually throughout the control plane. Control Panel: Inversely, traditional networks use switches, routers and other physical infrastructure to create connections and run the network. Northbound interface: Application developers can directly program the network, as opposed to using the protocols required by traditional networking. Proactive Arrangement: SDN lets users use software to provision new devices instead of using physical infrastructure, so IT administrators can direct network paths 15 7/8/2020
- 16. Virtualization Epitomizes: The primary difference between SDN and traditional networking. When SDN virtualizes your entire network, it generates an abstract copy of your physical network, and lets you provision resources from a centralized location. Opposingly, with a traditional network the physical location of the control plane hinders an IT administrator’s ability to control the traffic flow. Network Segmentation: With SDN, the control plane becomes software-based, allowing it to be accessed through a connected device. This access lets IT administrators manage traffic flow with greater detail from a centralized user interface (UI). The ability to quickly process different network configurations from a centralized UI is especially beneficial for network segmentation. 16 7/8/2020 SDN vs Traditional Networking
- 17. Additional Expense on Infrastructure: SDN became a popular alternative to traditional networking because it lets IT administrators provision resources and bandwidths as needed without requiring an investment of additional physical infrastructure. Hardware Requirements: Traditional networking requires new hardware to increase its network capacity. The paradigm for SDN versus traditional networking could be distilled to the generalization: one requires more equipment for expansion and the other requires only keystrokes. 17 7/8/2020 SDN vs Traditional Networking
- 18. Succinct Advantages of SDN Networking Software defined networking has the advantage of generating a framework that bolsters data-intensive applications, such as big data and virtualization. In addition to centralizing and simplifying the control of enterprise network management, SDN offers the following succinct advantages: Traffic programmability Greater agility Capacity to generate policy-driven network supervision Ability to implement network automation 18 7/8/2020
- 19. Features of SDN 19 7/8/2020
- 20. Centralized network provisioning: SDN helps centralize enterprise management and provisioning by offering a unified perspective on the whole network. SDN can also speed up service delivery and boost agility in provisioning virtual and physical network devices in a central location. Holistic enterprise management: Networks must meet the rising demand for processing requests. SDN helps your IT department adjust your network configuration with no impact on your network. More granular security: Virtual machines pose a challenge for firewalls and content filtering, a challenge that’s further compounded by personal devices. By establishing a central control point for regulating security and policy information for your enterprise, the SDN controller quickly becomes a boon for your IT department. 20 7/8/2020 Primary Advantages of SDN Networking
- 21. Lower operating costs. Several benefits to SDN, such as having an efficient administration, server utilization improvements, and improved virtualization control, can dually help cut operating costs. SDN can also help reduce operating costs and grow administrative savings. Hardware savings and reduced capital expenditures. SDN adoption helps revive older network devices and simplifies the process of optimizing commoditized hardware. By following the instructions from the SDN controller, older hardware can be repurposed while less costly hardware can be deployed to optimal effect. Cloud abstraction. Using SDN to abstract cloud resources helps simplify the process of unifying cloud resources. SDN controllers can manage all the networking components that comprise the massive data center platforms. 21 7/8/2020 Primary Advantages of SDN Networking
- 22. 22 Consistent and timely content delivery. One big benefit of SDN is the ability to manipulate data traffic. It’s easier to have quality of service for Voice over Internet Protocol (VoIP) and multimedia transmissions if you can direct and automate data traffic. SDN also helps with steaming higher-quality videos since SDN bolsters network responsiveness and, therefore, creates an improved user experience (UX). “Virtualization adoption is being driven by big data and SDN provides the means to manage virtual machines and big data network traffic.” Primary Advantages of SDN Networking 7/8/2020
- 23. Why are companies transitioning to SDN from traditional networks? Companies across many industries are already using SDN to reduce costs, drive agility and accelerate time to market. One organization lowered hardware costs by as much as 90% and another improved performance of a critical application by up to 40%. By the end of 2021, SDN is expected to influence nearly 80% of all network purchase decisions. Improved agility by allowing for external control and automation of the network. Simplified management by improving operational efficiencies. Cost saving with the ability to drive big systems. Increased innovation by decoupling network hardware and software. 23 7/8/2020
- 24. Transition to SDN However, while the transition to SDN is the clear objective for network decision- makers, the path to SDN offers a broad range of choices. Do you choose an open solution or a proprietary one? Do you have to replace your existing infrastructure? Is there an easy migration path to SDN? What are some successful applications and use cases? Here are the top five factors you should consider as you transition to SDN: 24 7/8/2020
- 25. 1- An end-to-end model incorporating data center, campus, branch and mobile networks: One of the biggest opportunities with SDN is to quickly provision applications on the network. Applications are typically deployed in the data center and used by workers in campus or branch offices or, increasingly, those who are mobile and using mobile devices. In the digital workplace, the notion of separate campus, branch and remote access networks disappears. Another characteristic of the digital workplace is that workers need to be connected to their data and apps and to one another—wherever they are located and whatever device they are using. This is becoming more important as organizations continue to embrace cloud models. Workers who use their phone or tablet to connect to a business application and access a cloud-based business service need the same security and quality-of-service policies as anyone else on the network. 25 7/8/2020
- 26. 2- Support for open standards However, in order to maximize the benefits of SDN, the network must be built on open standards with support for an open ecosystem. You want to ensure that everyone can participate—partners, customers and developers. The benefits of utilizing an open standards approach to SDN include: 26 7/8/2020 Freedom to use best-of-breed technologies wherever they are required, and not be limited to the solutions of a single vendor, cost efficiencies. Ease of adoption in a multi-vendor environment. Ability to leverage a broader ecosystem and an easily accessible marketplace to drive innovation. An investment that protects you for the future as technologies and standards continue to evolve.
- 27. 3- A solution that doesn’t force you to replace existing infrastructure One of the first questions IT leaders ask in the face of transformative change is whether (and how) they can protect their existing investments? The ideal way to evolve to SDN is through the use of a hybrid SDN solution that supports both SDN and traditional networking. A hybrid solution can assist in ease of adoption, whereby the SDN application can be deployed in a multivendor environment. In a hybrid environment, an OpenFlow-enabled switch is deployed at the edge— where the application is accessed—leaving the rest of the network intact. You can simply flip a switch to a mode that enables you to go back to traditional networking. You can also reduce total cost of ownership (TCO) by extending the lifecycle of existing equipment. 27 7/8/2020
- 28. A network partner with an ecosystem that supports a broad range of applications Why wait to deploy SDN when you can deliver measurable benefits to your business today? One of the keys to accelerating your deployment of SDN is to work with a network partner that already has an ecosystem of proven applications. Before the advent of the app store, SDN solutions were tested and purchased separately. The app store has lowered the barrier to innovation and allows you to focus on business outcomes. Solutions are integrated seamlessly and ready to install with a simple download. 28 7/8/2020
- 29. Software-defined networking is an important enabling technology for the digital workplace. SDN enables a network infrastructure that is more reliable, agile and cost-efficient than legacy networks, making it much more suitable for today’s cloud and mobile era. For IT and network decision-makers, today’s network investments have to support the SDN infrastructure of tomorrow. 29 7/8/2020
- 30. Thank you! 30 7/8/2020