What do you do if you're a network engineer transitioning to software-defined networking (SDN)?

Educate Yourself: Dive into SDN concepts, technologies, and architectures through online courses and certifications. ?? Hands-On Practice: Experiment with SDN in a lab environment using simulators like GNS3 or real SDN controllers. ?? Join Communities: Engage with SDN communities on platforms like Reddit, LinkedIn, and GitHub for insights and networking. ?? Update Your Resume: Highlight your learning and any practical SDN experience to attract potential employers. ?? Stay Updated: Follow industry trends and news to understand evolving SDN technologies and best practices. ?? Collaborate: Work on projects or with teams that focus on SDN to gain real-world experience. ??

In my experience, there's no substitute for on-the-job, hands-on experience. Engaging in an actual SDN implementation is the most effective way to learn. However, few engineers have the opportunity to learn new technologies while simultaneously working on a project, not to mention the time constraints involved. SDN implementations vary from vendor to vendor; for example, deploying Cisco ACI is different from deploying Juniper Contrail, but the fundamentals remain consistent. Just remember, SDN is simply a new approach to programming network devices. If your networking basics are solid, you'll discover that programmability becomes a valuable ally, simplifying your life as a network engineer.

Network engineers must adjust to new technologies and procedures while switching from traditional networking to software-defined networking (SDN). The key concept of SDN is forwarding of a packet in the data plane is managed by a separate (remote) control plane and Data plane and control plane are decoupled. Advantages of SDN. Increased flexibility, enabling network evolution, and Simplify network management.

All the above, but also: if you've been in networking for more than 5 years and don't have some SDN rudiments and a bit of labbing experience, why not? Maybe use this as a learning point: in a few years your skills will be a lot less relevant if not obsolete - learn about emerging trends now - possibly see if you can see winners, losers and use cases.

No point repeating the great advice offered here but from an older network engineer in his 50s who went from programming 3200 Cisco switches in the 90's to running ACI and ISE environments in the 20's the one thing I learned was transitioning through the roles meant as I moved up the ladder I became less connected to the technical side of things and delegated that to the new and upcomings. Once I realised this I was able to take a completely different view of my job and that alone eliminated stress and gave me additional confidence to know that I could actually do the job. The point I'm really making is yes, you have to keep up with the technology and learn it but you don't need to be the expert to run it but you do need years of expertise.

SDWAN is a technology that solves specific design criteria. Like any new technology, assess your needs and check if the technology can solve. While it is a very useful technology if it fixes or solves a problem, it's not useful if it can't improve your network.

I'm skeptical about our readiness for a software-defined network. While it does have applications, we're only beginning to embrace this need, and many other countries don't even require it. Our shift to SDN is primarily driven by manufacturers' convenience in maintaining a single platform without the need for frequent hardware depreciation. Additionally, the licensing structure allows them to charge for something as inexpensive as software rather than costly hardware.

The most dificult about SDN for network infrastructure engineers is the fact that sometimes programming abilities should be developed in a way to solve common protocol compatibility issues

Recognize that SDN represents a significant shift in networking paradigms. Embrace the change with an open mindset and willingness to learn new concepts and approaches.

Always be prepared for change mentally because being able to shift helps with self motivation. Therefore, knowing that technology is constantly evolving having the mental power to take it all in positively is key!

Basically SDN is just the evolution of traditional networking, so one would only need to upgrade his skills, to keep up with the pace, mainly an experienced network engineer will have all the basic requirements before going for SDN. Understand Control Plane, Data Plane and management plane separation, underlay and overlay protocols and how they should work. Get familiar with Python, JSON, Net conf and automation tools such as Ansible, as it will always come in handy. If you're a Cisco Geek, I would highly recommend INE SDA/SDWAN courses.

Identify the specific skills and knowledge gaps you need to fill to excel in SDN. This may include programming languages (e.g., Python), automation tools, virtualization technologies, and understanding of SDN controllers.

To transition into SDN: Learn Python for network automation. Master SDN controllers and configuration tools. Enhance coding skills for modern network management.

Start with some YouTube videos to find a starting point and dig in. That maybe CBT course, and for dummies. Use the approach that works for you.

Network engineers will continue to play a crucial role even after the arrival of Software-Defined Networking (SDN). While SDN automates many tasks and centralizes network management, network engineers will still be needed to design, implement, and troubleshoot complex networks. Their roles may evolve to focus more on software and automation, as well as higher-level network architecture and security. Rather than becoming extinct, network engineers will likely adapt to the changing landscape of networking technologies.

Network coding is pivotal in SDN. Master these skills: Write scripts for network automation. Automate provisioning and event responses. Configure network devices programmatically. Understand RESTful APIs for SDN interaction. Set up a virtual lab for hands-on practice.

Learn python and embrace automation in everything, day to day tasks and routine tasks. Be proactive and start documenting the process, eliminate gaps and automate the work flow.

Gain practical experience by working on SDN projects, contributing to open-source SDN projects, or participating in SDN-related communities and forums.

Stay abreast of the latest developments and trends in SDN through blogs, forums, conferences, and webinars. Continuous learning is essential in the rapidly evolving field of SDN.

To transition from a network engineer to a software-defined networking (SDN) professional, start by understanding the basic concepts and principles of SDN. Learn about SDN technologies and protocols, and gain hands-on experience with SDN controllers and switches in a lab environment. Update your networking skills to include knowledge of SDN concepts and programming languages like Python. Consider seeking training and certification in SDN technologies, and stay informed about the latest trends in SDN. Network with other professionals in the field to learn from their experiences, and be prepared to face challenges such as integrating SDN into existing infrastructure and addressing security concerns.

Consider pursuing relevant certifications like Cisco's CCNA or CCNP in Data Centers or certifications specific to SDN technologies, such as ONF Certified SDN Associate (OCSA) or ONF Certified SDN Engineer (OCSE).

Let’s take a closer look at what an API is. SDN controllers typically use a?REST API (Representational State Transfer). The REST API uses HTTP messages to send and receive information between the SDN controller and another application. It uses the same HTTP messages that you use when you browse a webpage on the Internet or when you enter a contact form online: HTTP GET: used when we want to retrieve information. HTTP POST/PUT: used when we want to upload or update information. It is similar browsing a webpage, only this time, you are not requesting a webpage or picture but a particular object from the SDN controller, for example, a list with all VLANs in the network.

Transitioning from a traditional network engineering role to software-defined networking (SDN) requires a comprehensive understanding of SDN principles, including centralized control, programmability, and automation. Engage in targeted learning through online courses, workshops, and literature to deepen expertise. Hands-on experience with SDN platforms and tools, such as EVE-NG etc is essential. Stay abreast of industry developments by participating in SDN communities, attending conferences, and networking with peers. Leverage existing networking skills to contribute effectively to SDN projects within the organization, drawing upon experience in design, implementation, and troubleshooting.

Consider open source, there are millions of great open source packages that can help you automotive almost everything. Starting from backup snaps to configuration management.

Deep understanding is required in both classical as well as modern technologies in order to make the transition successful. Clear requirement why we are moving to SDN and what values/features we can add, is the key point. SDN encompasses several types of technologies, including functional separation,?virtualization?and automation through programmability. Originally, SDN technology focused solely on the separation of the network?control plane from the data plane, however it has come a long way now.