[What Is] AF_XDP and its potential

AF_XDP is a new type of socket, presented into the Linux Kernel 4.18, which does not completely bypass the kernel, but utilizes its functionality and enables to create something alike DPDK or the AF_Packet.

DPDK (Data Plane Development Kit) is a library, developed in 2010 by Intel and now under the Linux Foundation Projects umbrella, that accelerates packet processing workloads on a broad pallet of CPU architectures.

AF_Packet is a socket in the Linux Kernel, which allows applications to send & receive raw packets through the Kernel. It creates a shared mmap ring buffer between the kernel and userspace, which reduces the number of calls between these two.

AF_XDP Basics described by redhat


As opposed to AF_Packet, AF_XDP moves frames directly to the userspace, without the need to go through the whole kernel network stack. They arrive in the shortest possible time. AF_XDP does not bypass the kernel, but creates an in-kernel fast path.

It also offers advantages like zero-copy (between kernel space & userspace) or offloading of the XDP bytecode into NIC. AF_XDP can run in interrupt mode, as well as polling mode, while DPDK polling mode drivers always poll – this means that they use 100% of the available CPU processing power.

Future potential

One of the potentials in the future for an offloaded XDP (being one of the possibilities of how an XDP bytecode can be executed) is, that such an offloaded program can be executed directly in a NIC and therefore does not use any CPU power, as noted at FOSDEM 2018:

Because XDP is so low-level, the only way to move packet processing further down to earn additional performances is to involve the hardware. In fact, it is possible since kernel 4.9 to offload eBPF programs directly onto a compatible NIC, thus offering acceleration while retaining the flexibility of such programs.


Furthermore, all signs lead to a theoretical, decentralized architecture – with emphasis on community efforts in offloading workloads to NICs – for example in a decentralized NIC switching architecture. This type of offloading would decrease costs on various expensive tasks, such as the CPU itself having to process the incoming packets.

We are excited about the future of AF_XDP and looking forward to the mentioned possibilities!

For a more detailed description, you can download a presentation with details surrounding AF_XDP & DPDK and another from FOSDEM 2019.

You can contact us at https://pantheon.tech/

Explore our Pantheon GitHub.

Watch our YouTube Channel.

[Announcement] PANTHEON.tech @ ONS EU 2019!

PANTHEON.tech will be attending this years Open Network Summit Europe in Belgium, Antwerp. We are looking forward to this event, organized by the Linux Foundation Networking & Linux Network Foundation.

As is tradition, we will be participating, networking and presenting a variety of projects, ideas, and our skills to potential business-partners & like-minded open-source enthusiasts.

You will be able to meet with:

  • COO Štefan Kobza 
  • VP of Engineering Miroslav Mikuš
  • Technical Business Development Manager Martin Varga

Come talk to us @ Booth B8

Our demo with Orange

This year, we will be presenting a demo (as part of the LF Networking Demo section), in a partnership with Orange. The presentation itself is named:

TransportPCE: SDN Controller & Simulators for WDM Optical Networks (OpenDaylight, FD.io, Open ROADM, lighty.io)

TransportPCE is an open-source implementation of an optical SDN controller officially integrated into OpenDaylight Fluorine and Neon releases. It allows managing optical WDM devices, compliant with the Open ROADM specifications, the current only open standard that focuses on WDM devices full interoperability.

Along with the controller implementation, TransportPCE also embeds a device simulator, derived from the FD.io project honeycomb. A full functional test suite was built on top of this simulator for CI/CD sake. The demo will simulate a small WDM network topology with FD.io honeycomb and shows how to create and delete a WDM service with the TransportPCE test suite. The design of TransportPCE relies on a modular approach that leverages the classical OSGi OpenDaylight framework.

This design allows considering more deployment scenarios than the monolithic WDM network management systems classically found on commercial products. lighty.io is an alternative framework to OSGI for OpenDaylight, that is developed by PANTHEON.tech and is partially open-sourced. It is thought for deployment scenarios, that require streamlined applications with minimalistic resource consumption (e.g. microservices).

TransportPCE supports both OSGi and lighty.io (without any proprietary component). The demo will propose a comparison of OSGi and lighty.io.

Who is PANTHEON.tech?

PANTHEON.tech is a software research & development company, located in Bratislava, Slovakia. Our focus lies on network technologies and the development of software, with over 17 years of experience.

We were part of developing OpenDaylight components: MD-SAL, YANG Tools, Clustering, NETCONF, RESTCONF, SNMP, OpenFlow, BGP & PCEP. We look forward to helping speed up the development of open-source networking technology & participating in the SDN revolution.

lighty.io Summer 2019 News

[News] all-lighty.io Summer 2019

It has been a busy summer for PANTHEON.tech & our developers of our leading product lighty.io. For all those interested in new information, here is a round-up of all the examples and demos we have published on our social media.

Integrating lighty.io & CCSDK (ONAP)

In the last weeks, we are intensively working, together with the wonderful ONAP community, on proposing to remove existing dependencies on the OSGi Framework and Karaf from the CCSDK project – while still maintaining the same OpenDaylight services, which the community knows and uses. We will deep-dive on our proposal soon in a separate post, so stay tuned!

Spring Boot Example

Full NETCONF/RESTCONF stack for the Spring Boot runtime.

We have recently succeeded in running RESTCONF in a Springboot example, designed for lighty. Springboot is now able to run in a full OpenDaylight/lighty.io stack.

Spring Boot makes it easy to just run & create stand-alone, Spring-based Applications. It boasts no code generation or requirement for XML configuration, automatic configuration of Spring functionality and radically improves the pure Spring deployment and development.

Clustered Application Demo

lighty.io running as a clustered RESTCONF/NETCONF SDN controller application. From now on, it supports deployment in Akka cluster, so you are not limited to single-node SDN controllers.

Furthermore, you can deploy lighty.io as a Kubernetes cluster.

TransportPCE Controller

lighty.io TransportPCE Controller is now upstreamed in the OpenDaylight Project! We have previously managed to migrate TransportPCE into lighty. Now, you can see the code for yourself in the OpenDaylight repository. 

We have previously published a how-to on how to migrate the OpenDaylight TransportPCE to lighty.io.


We are planning on extending the BGP function of an SDN controller with an EVPN extension in the BGP control-plane. We will discuss BGP-EVPN functions in SDN controllers and how the lighty.io BGP function can replace existing legacy BGP route reflectors, running in service provider’s WAN or DC networks.

Match Made In Heaven: Spring Boot & lighty.io

lighty.io brings you full NETCONF/RESTCONF stack for the Spring Boot runtime.

Check out our example, which runs core OpenDaylight components integrated into a Springboot application.

You are no longer restricted to the cumbersome legacy ODL Karaf runtime. lighty.io makes accessible spring component ecosystem for wide SDN development. Go ahead and enjoy features of ODL ecosystem and advantages of the vast spring project ecosystem.

Popular Java Framework

We have recently succeeded in running RESTCONF in a Springboot example, available for lighty.io. Springboot is now able to run in a full OpenDaylight/lighty.io stack, this includes:

  • MD-SAL

Spring Boot makes it easy to just run & create stand-alone, Spring-based Applications. It boasts no code generation or requirement for XML configuration, automatic configuration of Spring functionality and radically improves the pure Spring deployment and development.

MD-SAL, part of the OpenDaylight Controller, provides infrastructure services for data stores, RPC (& Service Routing) and notification subscriptions, as well as publish services.

Model-Driven SAL Queries is a tool developed by PANTHEON.tech, aimed at OpenDaylight developers. Its goal is to speed up work with the MD-SAL API. On top of this, we added two new features: query operations on a data store. Check out our introductory video on this project:

RESTCONF is a REST-like protocol running over HTTP. It helps to access data defined in YANG, for which it uses datastores defined in NETCONF. Its aim is to provide a simple interface with REST-like features and principles, with device abstraction based on available resources.

NETCONF, on the other hand, is a network management protocol, developed and maintained by the Internet Engineering Task Force. It is able to manage (install, delete, manipulate) network device configurations. All of these processes are done on top of an RPC layer.

You can contact us at https://pantheon.tech/

Explore our Pantheon GitHub.

Watch our YouTube Channel.

[Comparison] OpenDaylight Neon SR1 vs. SR2

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, long-awaited release of Sodium.

Our commitment – more commits

PANTHEON.tech’s CTO, Robert Varga, is currently the top-single committer to OpenDaylights source-code, according to recent reports. PANTHEON.tech also resides as the number 1 contributor to its source-code.

Bitergia, a software development analytics company, regularly tracks the number of commits to OpenDaylight – based on single commiters and companies. OpenDaylight plays a significant role in PANTHEON.tech’s offerings and solutions.

Apart from PANTHEON.tech’s position as a top contributing organization to ODL, PANTHEON.tech 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 as ONAP, OPNFV or FD.io.

What is OpenDaylight?

OpenDaylight is a collaborative, open-source project, established in 2013. It aims to speed up the adoption of SDN and create a solid foundation for Network Functions Virtualization.

It was founded by global industry leaders, such as Cisco, Ericsson, Intel, IBM, Dell, HP, Red Hat, Microsoft, PANTHEON.tech and open to all.

PANTHEON.tech’s involvement in OpenDaylight goes way back to its beginnings. We have led the way in what an SDN controller is and should aspire to be. This requires dedication, which was proven over the years with an extensive amount of contribution and a successful track record, thanks to our expert developers.

Contact us, if you are interested in our solutions, which are based on, or integrate OpenDaylights framework.

[Release] OpenDaylight Sodium, YANG Tools & MD-SAL

It is no secret, that OpenDaylight is more than a passion project here at PANTHEON.tech. As one of the staples in the SDN revolution, we are also proud that we are one of the largest contributors to the project, with our CTO Robert Varga leading in the number of individual commits. Let us have a look at what is new.

YANG Tools 3.0.0

YANG Tools is a set of libraries and data modeling language, used to model state & configuration data. It’s libraries provide support for NETCONF and YANG for Java-based projects and applications.  What’s new in the world of the latest Yangtools release?

It implements new RFCs: RFC7952 (Defining and Using Metadata with YANG) and RFC8528 (YANG Schema Mount).

YANG parser now supports RFC6241 & RFC8528, while adding strict QName rules for “node identifiers”.

JDK11 support has been added together with lots of small bugfixes, which you can read in detail in its changelog.

MD-SAL 4.0.0

The Model-Driven Service Abstraction Layer is OpenDaylight’s kernel – it interfaces between different layers and modules. MD-SAL uses APIs to connect & bind requests and services and delegates certain types of requests.

The new version of MD-SAL has been released for ODL. MD-SAL is one of the central OpenDaylight components. This release contains mainly bugfixes and brings pre-packaged model updates for newly released IETF  models: RFC8519, RFC8528, RFC8529, RFC8530.

OpenDaylight Release Sequence

Get ready for OpenDaylight Sodium

OpenDaylights development has a new important milestone ahead: the Sodium release, currently scheduled around September 2019. This release will bring new versions of YANG Tools, MD-SAL and other core OpenDaylight components.

JDK11, as well as JKD8, is supported, providing an opportunity for OpenDaylight users to try new features of JDK11. It bids farewell to Java EE modules & JavaFX, as well as performance & bug fixes.

We believe you are also looking forward to these releases and encourage you to try them out!

Don’t forget to contact us, in case you are interested in a commercial solution for your business!

You can contact us at https://pantheon.tech/

Explore our Pantheon GitHub.

Watch our YouTube Channel.

[Release] VPPTop

Here at PANTHEON.tech, we really enjoy perfecting the user experience around VPP and creating projects based around this framework. That is why we have developed a handy tool, which lets you analyze several crucial data points while using VPP. We call it VPPTop.


In order to run VPPTop, you will need to install these dependencies first:

  1. [Go] version 1.11+
  2. [VPP], version 19.04-3~g1cb333cdf~b41 is recommended. You can find the installation guide here.
  3. Configure VPP, according to the README file

How to install & run

1. Follow the above requirements, in order to have all dependencies for this software installed

2. Make sure VPP is running beforehand

3. Install VPPTop via Terminal to $GOPATH/bin:

go get -u github.com/PantheonTechnologies/vpptop

4. Run the tool from Terminal:

sudo -E vpptop

What is VPPTop?

VPPTop is an application for sysadmins and testers, implemented in Go. The goal of VPPTop is to provide VPP statistics which are updated in real-time, in one terminal window.

Before the release of our tool, admins could only rely on the usage of a CLI, to first request the data flow and then receive information, which are not up-to-date, nor in real-time.

Now, you can use our VPPTop tool, to find up-to-date information on your framework!

Version 1.11 supports statistics for:

  • Interfaces
  • Nodes
  • Errors
  • Memory Usage per Thread
  • Per Thread-Data

Version 1.11 supports these functionalities:

  • Clearing counters
  • Filter by Name
  • Sorting

Why should you start to use Vector Package Processing?

The main advantages are:

  • high performance with a proven technology
  • production level quality
  • flexible and extensible

The main advantage of VPP is, that you can plug in a new graph node, adapt it to your networks purposes and run it right away. Including a new plugin does not mean, you need to change your core-code with each new addition. Plugins can be either included in the processing graph, or they can be built outside the source tree and become an individual component in your build.

Furthermore, this separation of plugins makes crashes a matter of a simple process restart, which does not require your whole build to be restarted because of one plugin failure.

You can read more in our PANTHEON.tech series on VPP.

You can contact us at https://pantheon.tech/

Explore our Pantheon GitHub.

Watch our YouTube Channel.

PANTHEON.tech joins the Telecom Infra Project

In January 2019, PANTHEON.tech has become a member of the Telecom Infra Project community – a collaborative telecom community.

The Telecom Infra Project is a network of companies which aim to share, create and collaborate on innovative technologies in the field of telecommunication. Its members comprise a variety of operators, technology providers, developers, startups and other institutions, outside of telecommunication services. It was launched in February 2016, with the aim of accelerating the pace of innovation in the telecom industry.

How it works

The Telecom Infra Project has a structure, in which its members can actively contribute and share their expertise in the wide range of telecom technologies:

Project groups design and build technologies. They are divided into three network areas, that altogether create an end-to-end network: AccessBackhaulCore and Management.

Community Labs test and validate the technologies from Project Groups in field and production trials. There are 6 active TIP Community Labs from all around the world, which share their testing results and respond to the members outputs.

Ecosystem Acceleration Centers aim to build a dedicated space with venture capital funding and experienced advisors, in order to help upcoming and promising telecom startups bring their ideas to the market and consumers.

PANTHEON.tech is proud to be part of the driving force in telecommunication innovation.We believe that we will prove ourselves worthy of this membership with our expertise in SDN, NFV or open-source solutions.

We are looking forward to cooperating with other TIP members on improving and creating technologies.

You can contact us at https://pantheon.tech/

Explore our Pantheon GitHub. Follow us on Twitter.

Watch our YouTube Channel.



PANTHEON.tech adds OC4VPP code to Sweetcomb

Recently, PANTHEON.tech has decided to contribute to FD.io’s Sweetcomb project source-code. This was mainly due to the fact, that our new project OC4VPP would compliment the idea and possibilities of the project, while improving its functionality.

What was the OC4VPP project?

Network administrators have the possibility to use protocols, such as gNMI or NETCONF, in order to communicate with sysrepo.

OC4VPP was a sysrepo plugin, with which we were able to setup and orchestrate the VPP framework. This plugin was part of our in-house solution that we were working on.

Sweetcomb and OC4VPP both use VAPI, in order to communicate with the VPP API. Here at PANTHEON.tech, our developers managed to include more YANG models into OC4VPP. But we  realized soon, that Sweetcomb was in advanced development and provided some of the functionality, we wanted to work on.

How will Sweetcomb benefit from OC4VPP?

Sweetcomb is a management agent, used to expose YANG modules, with the help of RESTCONF and NETCONF, in order to immediately allow  management of the VPP instance. It translates all communication between the Northbound interface and the VPP API.

We believe, that Sweetcomb will directly benefit from PANTHEON.tech’s solution, in form of the source-code of OC4VPP. This will provide the project with more YANG models to expand its functionality.

Due to Sweetcomb being a new project and mainly proof of concept, it currently supports only these 5 IETF-YANG models:

  • /ietf-interfaces:interfaces/interface
  • /ietf-interfaces:interfaces/interface/enabled
  • /ietf-interfaces:interfaces/interface/ietf-ip:ipv4/address
  • /ietf-interfaces:interfaces/interface/ietf-ip:ipv6/address
  • /ietf-interfaces:interfaces-state

First of all, Sweetcomb will gain support for OpenConfig models, which expands its usability and improves the projects deployment scale.

In case of OC4VPP, we managed to include 10 additional YANG models we would like to implement into the actual list of supported modules in Sweetcomb:

  • /openconfig-interfaces:interfaces/interface/config
  • /openconfig-interfaces:interfaces/interface/state
  • /openconfig-interfaces:interfaces/interface/subinterfaces/subinterface/state
  • /openconfig-interfaces:interfaces/interface/subinterfaces/subinterface/openconfig-if-ip:ipv4/openconfig-if-ip:addresses/openconfig-if-ip:address/openconfig-if-ip:config
  • /openconfig-interfaces:interfaces/interface/subinterfaces/subinterface/openconfig-if-ip:ipv4/openconfig-if-ip:addresses/openconfig-if-ip:address/openconfig-if-ip:state
  • /openconfig-local-routing:local-routes/static-routes/static/next-hops/next-hop/config
  • /openconfig-local-routing:local-routes/static-routes/static/next-hops/next-hop/interface-ref/config
  • /openconfig-local-routing:local-routes/static-routes/static/state
  • /openconfig-local-routing:local-routes/static-routes/static/next-hops/next-hop/state
  • /openconfig-local-routing:local-routes/static-routes/static/next-hops/next-hop/interface-ref/state

As a regular open-source contributor and supporter, we are glad that we were able to make this important decision and showcase crucial principles of open-source development:

Communication – Participation – Collaboration

You can find the source-code for Sweetcomb in the official GitHub.

You can contact us at https://pantheon.tech/

Explore our Pantheon GitHub. Follow us on Twitter.

Watch our YouTube Channel.

PANTHEON.tech is the 2nd largest OpenDaylight contributor for Q3/2018

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 PANTHEON.tech’s offerings and solutions.

PANTHEON.tech’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 PANTHEON.tech’s position as one of the largest contributors to the OpenDaylight project.

As for the list of companies which contribute to the source code of OpenDaylight, PANTHEON.tech 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.

[visualizer id=”6864″]

Due to ODL’s open-source nature, anyone can contribute to the project and improve it in the long-run. Any change that gets added to the source code is defined as a commit. These types of changes need an approval and can not be any type of automated activity – including bot-actions or merges. This means, that each single commit is a unique change, added to the source code.

PANTHEON.tech will continue its commitment to improving OpenDaylight and we are looking forward to being a part of the future of this project.

What is OpenDaylight?

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).

PANTHEON.tech’s nurture for ODL goes back when it was forming. In a sense, PANTHEON.tech has led the way is and how an SDN controller is and should be. This requires dedication, which was proven over the years with the extensive amount of contribution thanks to its expert developers.

Click here if you are interested in our solutions, which are based on, or integrate ODL’s framework.

You can contact us at https://pantheon.tech/

Explore our Pantheon GitHub.

Watch our YouTube Channel.

PANTHEON.tech @ OTKD – 345 km in 33,5 hours.

PANTHEON.tech’s running team participated in the From Tatry To Danube Run (OTKD) 2018.

The relay run named From Tatry To Danube (OTKD) is 345 kilometers long run and may comprise a maximum of 12 runners per team. This year, 214 teams had taken part. PANTHEON.tech running team took part in this adventure with our 12 runners who had to cover 345 kilometers in less than 36 hours. We are proud that our colleagues were successful. The running team finished the run in the overall 33 hours 34 minutes.

The run took place from Saturday, August 18 to Sunday, August 19. The runners started on Saturday morning in Demenovská valley and ran non-stop. Day and night, in harsh weather and terrain, to reach the finish in Bratislava on the bank of Danube river. Each of the runners covered approximately 30 kilometers in average.

PANTHEON.tech believes, a healthy mind can only cherish on a healthy body is happy to support its employees in participating in such activities. See you at OTKD 2019!

[lighty.io] Welcome lighty.io to Open-Source!

PANTHEON.tech, the proven supporter of open-source software and its communities, and leader in Software Defined Networking (SDN) and the OpenDaylight (ODL) platform, decided to open-source the core components of the current go-to SDN controller development kit: lighty.io.

Last Open Networking Summit, USA witnessed the announcement of lighty.io. This ONS will be the place where all OpenDaylight users will remember.

Today, PANTHEON.tech continues to push forward the open-source community projects and its commercial applications developed on open-source software, especially the lighty.io core.

What is lighty.io?

lighty.io journey started when we realized the way to move the upstream project to the direction we envisioned was to provide a solution rather than talk about it. Therefore we’ve focused on a solution of the biggest pain point of current ODL, and turned it into the idea-bearer of the whole product. We’ve taken the biggest obstacle – Apache Karaf, out of the ODL developers lives, and hence improving their efficiency tremendously.

On the other hand the lighty.io commercial product is available for purchase is developed using the same lighty.io core which gets open-sourced today. We are tirelessly adding new features with the demand and cooperation with our customers. Such as the lighty.io Network Topology Visualisation Component, Go/Java/Python RESTCONF clients, improved RESTCONF notifications with HTTP 2.0 support, improved southbound NETCONF plugin with the implemented support of YANG actions, NETCONF simulator to name a few.

Our vision from the start was to enhance the commercial version of lighty.io with bleeding edge features and improvements that are not yet in open-source ODL. This will leverage lighty.io users capability to speed up their development and deployment. Today, users will get the chance to experience these changes, instead of waiting until such improvements appear in the upstream or developing themselves.

PANTHEON.tech released lighty.io core components under Eclipse Public License v1.0 as a continuous support to the community.

Future of SDN

We believe this generous act will result in spinning up new projects based on OpenDaylight components making them faster and cheaper to develop and will give you a competitive edge in today’s fast evolving world of micro service and cloud-oriented deployments.

We encourage all OpenDaylight users, Data Center managers, Telco and Service Provider DevOps to give lighty.io a try with their existing applications. It will be amaze you.

Today, PANTHEON.tech will officially release the lighty-core as free and open-source software at the event. Please join us in the Open Networking Summit Europe/Amsterdam at booth #14.

There is more to come, as we will reveal how lighty.io cuts down the software development costs and time, helping our customers to consume complex data center management features with ease.

Stay tuned and watch this space for the other great announcements around lighy.io which will take space in the event. Be there to witness the amazing.

Meet Martin Varga – PANTHEON.tech @ ONS 2018

Martin Varga represents PANTHEON.tech as the Technical Business Development Manager and is responsible for the growth of the company’s business portfolio and goal to establish new partnerships. Martin has over two decades of professional experience in marketing, sales management, and international business development fields.

He has acquired many titles in his long career, ranging from Artist Manager to COO. He is an excellent negotiator and peoples person.

Recently, Martin had started to be very interested in the Hi tech business, especially in the networking field, which is on the rise nowadays and will be for the next decades. He quickly got absorbed in the networking field and discovered his new passion. Hence he accepted the challenge and is using all his previously acquired experience to expand the business development for PANTHEON.tech.

Connect with Martin via his LinkedIn.

Martin will be available to establish new business relationships with international partners and to discover new market share. He will be representing PANTHEON.tech the silver sponsor of Open Networking Summit Europe which will take place on Sep 25-27 in Amsterdam.

Join Martin at PANTHEON.tech’s booth #14 in the event possibly to shake hands into a partnership which will last.

Meet Robert Varga – PANTHEON.tech @ ONS 2018

Robert Varga is PANTHEON.tech’s  Chief Technology Officer who has almost two decades of Information Technology Industry experience ranging from being a C code monkey, through various roles in telecommunications’ IT operations to architecting bleeding edge software platforms.

Robert has a deep expertise in Software Defined Networking, its applications and the OpenDaylight platform.

Within those decades, some of the technologies he had experience are: C/C++, Java, Python, various UNIX-like systems and database systems.

Robert has a very strong background in design, development, deployment, and administration of large-scale platforms with the primary focus on high availability and security.

Robert has been involved in OpenDaylight from its start, architecting, designing and implementing the MD-SAL. He is the most prolific OpenDaylight contributor and a member of the OpenDaylight Technical Steering Committee, representing kernel projects. His code contributions revolve around key infrastructure components, such as YANG Tools, MD-SAL and Clustered Data Store. He also designed and implemented the first versions of the BGP and PCEP plugins.

[visualizer id=”6717″] 

Source: Bitergia Analytics

Until today, Robert Varga had made 11,368 commits in 66 ODL projects over the course of ODL’s lifespan. That is 621,236 added and 524,842 removed lines of code and that translates roughly around 12 great novels written in </code>. ODL continues to be a great example of what an open-source software is and how international contributors can collaborate beautifully to create the next great thing.  There are currently only 13 TCLs in ODL who help steer the project forward and lead the ODL to be the most successful SDN controller in the world. He is proudly one of the ODL Technical Steering Committee Members and a committer to a range of projects.

The all-time top contributor of ODL  Robert Varga, Chief Technology Officer of PANTHEON.tech makes the company proud to be among the top contributor of such innovative, successful project.

Robert shares the PANTHEON.tech’s ambition to create the biggest and most successful open-source Software Defined Networking (SDN) controller in the world.

Robert will be available to share his deep expertise in the field and representing PANTHEON.tech the silver sponsor of Open Networking Summit Europe which will take place on Sep 25-27 in Amsterdam.

Join Robert at PANTHEON.tech’s booth #14 in the event to get a glimpse of the Software Defined Networking future.


lighty.io @ Open Network Summit 2018

PANTHEON.tech, the proven supporter of open-source software and its communities, leader in Software Defined Networking (SDN) and the OpenDaylight (ODL) platform, has announced the development of lighty.io at the Open Networking Summit, USA.

Since then PANTHEON.tech’s initiative had received a great positive feedback. We got to know how lighty.io eased their SDN controller development pain and shortened the development time. Or how the removal of Apache Karaf enabled them to shorten product to market time and how the improved RESTCONF NB interface helped them spend time on their applications instead of solving technical debts.

Today, we to push forward the open-source community projects and its commercial applications developed on open-source software, especially the lighty.io core.

PANTHEON.tech will be again attending another summit on 25-27 September.

Find PANTHEON.tech, the Silver sponsor of the Open Networking Summit Europe, at the booth #14.

Stay tuned and watch this space for the other great announcements around lighty.io which will take space in the event.

Meet Štefan Kobza – PANTHEON.tech @ ONS 2018


Štefan Kobza is Chief Operation Officer at PANTHEON.tech with almost two decades of professional Information Technology industry experience.

He started his career as a software developer and built his way up. Štefan has worked on different projects ranging from developing proprietary code for major networking vendors to rating and billing services mainly in computer networking and telecommunication industries. All of his coding experiences helped Štefan to understand his game and stay on top of the projects he is involved and for PANTHEON.tech’s current customers to provide the highest quality engineering services.

Štefan has taken part in the process of defining some IETF RFCs ¹ ², which was an experience on its own.

Lately, he had developed a special interest for open-sourced projects and its communities.

Understanding the daily life of a software developer, Štefan helps in building an ever growing and ever improving environment that helps PANTHEON.tech provide the highest quality engineering services.

You can find his published articles and activities on his LinkedIn profile.

Besides leading day-to-day business in PANTHEON.tech, Štefan also watches closely the development around OpenDaylight, OPNFV, ONAP, FD.IO, Sysrepo, Contiv, Ligato, and others.

Find Štefan representing PANTHEON.tech the silver sponsor, at booth #14 in the Open Networking Summit Europe to exchange ideas and to get a glimpse of the Software Defined Networking future.

Save the date and get your tickets. #ons2018, Amsterdam Sep 25-27

PANTHEON.tech releases lighty.io version 9.0

OpenDaylight Fluorine 9 LogoPANTHEON.tech is proud to announce the release of lighty.io 9.0 following the official  OpenDaylight Fluorine release.

lighty.io has been adapted to reflect the latest upstream changes and made fully compatible with.

Check out our latest lighty.io release on our GitHub account.

Here are some noteworthy improvements what OpenDaylight Fluorine established:

  •  Yangtools cleanup and refactoring.
  •  Streamlined generated Yang module APIs.
  •  Improved Java bindings.
  •  NETCONF and RESTCONF improvements.

The biggest ODL improvement is the new set of core services provided by the MD-SAL project. Older services provided previously by the controller project have been marked as dprecated and will be removed in future ODL/lighty.io releases.

lighty.io provides new MD-SAL services as well as deprecated controller implementations.

Please see lighty.io Services for reference.

If your application uses any of the deprecated marked services, you should consider refactoring. Contact us for any troubleshooting requirements.

In addition to the latest ODL improvements, lighty.io has more to offer:

  • Up-to-date web server Jetty 9.4.11.v20180605 with better HTTP2 support.
  • RESTCONF implementations are now in compliance with HTTP2.
  • YANG actions implementation as it was defined in RFC 7650.
  • gNMI / OpenConfig south-bound plugin.
  • Minor changes leading the controller to startup faster
  • Improved Javadoc for main APIs.
  • The easier pathway towards JDK 11 adoption.
  • Spring.io dependency injection integration.
  • And many more, please check them out on the lighty.io web.

List of new and deprecated services:

List of new MD-SAL services: List of deprecated services:































 lighty.io by PANTHEON.tech

Meet Juraj Veverka – PANTHEON.tech @ ONS 2018

Juraj Veverka is PANTHEON.tech’s Technical Leader and Solution Design Architect who has over 15 years of technical experience. Juraj has a deep expertise in design and implementation of Software Defined Networking applications using the OpenDaylight platform. Some of the technologies he uses from his toolbox are Java, Python, JEE7, SpringBoot, GRPC, OpenDaylight, ONAP, Yang, Netconf, Restconf, OpenFlow, BGP, FD.io, C/C++, HTML.

Juraj has a Telecommunication and Electrical Engineering degree from the University of Zilina, Slovakia. Juraj shares the company’s mission to create the best development stack for SDN applications and has a passion for Java and embedded platforms.

You can find his published articles on his LinkedIn profile and see what he is working on, on GitHub.

Juraj will be available to share his deep expertise in the field and representing PANTHEON.tech the silver sponsor of Open Networking Summit Europe which is going to take place on Sep 25-27 in Amsterdam.

Find PANTHEON.tech at booth #14 in the event to get a glimpse of the Software Defined Networking future.

Meet Miroslav Miklus – PANTHEON.tech @ ONS 2018

Miroslav Mikluš is the vice president of engineering department at PANTHEON.tech.

Since he has had graduated from Slovak Technical University in Bratislava, Miroslav had almost two decades of Information Technologies experience mainly in the Slovak Republic tech companies with titles as Director of Engineering, Head of Information Technology Services division, Senior Technical Leader, etc.

He started his career as a software developer and had climbed many steps of the tech industry to reach where he is now.

Miroslav has helped to develop and deliver dozens of successful software developments and integration projects mostly for the computer networking industry.

He loves to play basketball and running.

You might remember him from the last Open Networking Summit North America with his presentation named ‘Ligato as a Golang integration platform of a BGP daemon with VPP.”

Miroslav will be representing PANTHEON.tech the silver sponsor of Open Networking Summit Europe which is going to take place on Sep 25-27 in Amsterdam. Be sure to be there to meet with him in person in PANTHEON.tech’s booth #14 or the on 5k Fun Run on September 26.


Press Release for #ONS2018

Pantheon Technologies is looking forward to showcasing the latest software developments at #ONS2018

From one summit to another. We will be at the Open Networking Summit in Amsterdam on 25-27 September. Come and find us in the event to talk over a cup of coffee about the exciting improvements.


We have been working hard since the last ONS. It will be worth your time when you hear the new software developments.

  • lighty.io will prove its compatibility with the latest version of OpenDaylight Fluorine.
  • lighty.io UI; Network Topology Visibility Component. The component enables you to visualize any topology on any device with a web browser.
  • lighty.io is a radio access network (xRAN) ready. We will show you how the SDN SDK is making its way to xRAN.
  • We have replaced OpenDaylight (ODL) by lighty.io in ONAP’s SDN-C component.

The Linux Foundation Networking Fund (LFN) community will get together once again on 25-27 Sep in Amsterdam in industry’s premier event Open Networking Summit gathering enterprises, service providers and cloud providers across the ecosystem to share learnings, highlight innovation and discuss the future of Open Source Networking including SDN, NFV, orchestration and the automation of cloud, network and IoT services.

“Pantheon Technologies has made rapid advancement in developing comprehensive software solutions that will continue to set new industry standards for the future of the Open Source revolution and innovation,” said Robert Varga, CTO at PANTHEON.tech.

Pantheon Technologies is a Software Research & Development company located in Bratislava, Slovakia focusing strongly on network technologies and development or improving the software with over 15 years of experience. All aspects of OpenDaylight MD-SAL, YANG Tools, clustering, NETCONF, RESTCONF, SNMP, OpenFlow, BGP, PCEP, to contribute our expertise in these key areas. The Linux Foundation is leading the way with open source projects and we look forward to helping speed up development of open source networking technology with our proven record entry to associated project OpenDaylight, our work will leverage and shape the Open Source Networking revolution.