& OpenDaylight & OpenDaylight – dedication and continuous support

The year was 2001, when, the software research, and development company was established in Bratislava, Slovakia. It had a focus on computer network technologies with love and care for open-source software development.

12 years into the life of, on 22 March 2013 to be exact, OpenDaylight (ODL) project has seen the first daylight with the initial code drop. It had the ambition to be the biggest and most successful, open-source, Software Defined Networking (SDN) controller in the world.

ODL is a collaborative open-source project aimed to speed up the adoption of SDN and create a solid foundation for Network Functions Virtualization (NFV). ODL was founded by the global industry leaders such as Cisco, Ericsson, Intel, IBM, Dell, HP, Red Hat, Microsoft and and open to all.’s nurture for OpenDaylight goes back, to when it was forming. In a sense, had led the way to define how an SDN controller is and should be. This requires dedication, which was proven over the years with an extensive amount of contribution thanks to its expert developers.

In ODL’s lifespan, had always been within the top 5 contributors.

Considering the committer’s view on the left chart, the top committer proved his dedication, by having over 20% of the total commits single-handedly – Robert Varga.

State of Commits had made 12,098 commits with sharp developers in over 50 ODL projects throughout OpenDaylight’s lifespan. That is 740,919 added and 664,588 removed lines of code.

That translates roughly around 20 great novels written in.

ODL continues to be a great example of what open-source software is and how international contributors can collaborate beautifully to create the next great thing.

In the last week of November 2018, Bitergia, a software development analytics company, published a report on the past and current status of the OpenDaylight project, which plays a significant role in’s offerings and solutions.’s CTO Robert Varga is leading the list of per-user-contributions to the source code of OpenDaylight, with over 980 commits to the source code in Q3 of 2018. This achievement further establishes’s position as one of the largest contributors to the OpenDaylight project.

As for the list of companies that contribute to the source code of OpenDaylight, is the 2nd largest contributor for Q3/2018, with 1034 commits. We were just 34 commits shy of the top contributor position, which belongs to Red Hat.

Inside OpenDaylight

Now, let’s touch on the OpenDaylight’s internal governance, TSCs, and PTLs, etc.

ODL is now a founding member of LF Networking (LFN), an entity that integrates the governance of participating projects to enhance operational excellence, simplify member engagement, and increase collaboration across open source networking projects and standards bodies.

OpenDaylight Technical Steering Committee (TSC) provides leadership regarding the technical direction of the ODL platform, as well as guidance on collaborative practices. Developers are elected by the ODL community to serve one-year terms. Currently, there are only 13 TSC members on duty and proudly a’s CTO – Robert Varga is one of them.

Project Technical Lead (PTL) is the leader of the OpenDaylight projects, who gets to decide if any of the proposed changes become part of the project or not. They are elected by the committers thanks to their expertise in the field.

Anyone can contribute to ODL which is an open-source project, but PTLs are the ones who lead the project to the prospected direction. If you want to learn how to get started with OpenDaylight, you can read more as a developer or as a user.

ODL had started with just five projects and thrived. Currently, there are 91 active projects and proudly involved, contributed to a very big proportion of it. Just another example of its expertise on the subject.

Apart from’s top contribution to ODL, has always been a strong supporter of the open-source community. This support covers a wide range of developers from local private open-source development groups to international open-source platforms. Such examples continuously supports our Local Open Source Networking User Groups, (OSNUG) OpenDaylight User Groups, OSS weekend meetings to name a few. But, the most generous of was to open-source one of its best developments, called

Future of OpenDaylight

The development of OpenDaylight Sodium is already producing significant improvements, some of which are finding their way to the upcoming Service Release of Neon.

These are the test results for OpenDaylight Neon SR2. We have recorded significant improvements in the following areas:

  • Datastore snapshot-size: ~49% reduction
  • Processing time: ~58% reduction
  • In-memory size: ~25% reduction
  • Object count: ~25% reduction
  • NodeIdentifier: ~99.9% reduction
  • AugmentationIdentifier: ~99.9% reduction

These enhancements will also be present in the future, the long-awaited release of Sodium.