sdn

ONF Certified SDN Associate (OCSA) – Part 1

The concept of SDN is constantly evolving. There are countless adaptations, projects, solutions, and products in this market, and we’ve just begun to see the impact. Developed network engineers will want to stay informed in this age of great change. This is why the Open Networking Foundation (ONF) put together a certification program for SDN. (more…)

Flowsim – A Web-based OpenFlow Learning Tool

Just discovered a tool developed by OpenFlow researchers and engineers called Flowsim. It’s been around for a couple of years, I’ve just never got around to using it. It’s a tool that helps you visually learn OpenFlow. It runs entirely in your browser, and all you need is a free account to get started.

You can configure OpenFlow switches and setup packets to be sent through the OpenFlow pipeline. If you’re curious about the underworkings of OpenFlow and don’t feel like setting up your own lab, definitely check it out. (more…)

OpenFlow – Basic Concepts and Theory

Spoken in the words of the Open Networking Foundation – one of the key concepts to understanding SDN is the separation of control plane and data plane. Typically a network is comprised of many routers and switches, each exchanging table information to build topologies. Each of these network devices has their own individualized control plane for brain-like functions such as route or MAC learning. Each network device also has its own data plane for forwarding packets. The challenge is each device has its own perspective of the network, and the only way you can view that perspective is by connecting to that device via a CLI and issue commands or configurations. The same is applicable for other devices like firewalls, load balancers, not just routers, and switches. (more…)

ONUG – What is it, and why am I here?

If you’ve ever seen a film with audio engineering by THX, you’ve experienced that brief, immersive surround sound that captivates your senses, completely eradicating your thoughts while the mind basks in weightless bliss.  Much like the beginning of a George Lucas film, the networking industry is currently in a state of THX, steadily swelling with that warm buzz, fantasizing about the potential for bliss.  Software-Defined Networking (SDN), Software-Defined WAN (SD-WAN), Network Function Virtualization (NFV), Hybrid Clouds, Virtual Overlays and Containerization are at the crest of this tsunami of change, promised to radically disrupt the way businesses develop and operate their networks. But change is risky, especially in regards to bleeding technologies. Companies need better opportunities to understand their options and share experiences with each other.  Enter ONUG.

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Big Switch Labs – A Playground for Big Minds

When I was chosen as a delegate for the recent Tech Field Day event (NFD10) and learned that Big Switch Networks would be presenting, I had no idea who they were or what to expect. I spent some time reading up and watching a few videos to get a better understanding of the technology, but still felt like I had gaps in comprehension. Big Switch then sent an email informing me of their lab environment called BSNLabs. I dove in and swam around for a few hours, consuming enlightenment with each doggie paddle. If you have 3 minutes to spare, I’ll do my best to quickly explain why Big Switch is cool, and how you can test drive it yourself. (more…)