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Imperative & Declarative Programming

[What Is] Declarative vs. Imperative Approach

by Filip Čúzy | Leave us your feedback on this post! A DevOps paradigm, programmatic approach, or Kubernetes management. The decision between a declarative or imperative approach is not really a choice – which we will explain in this post. The main difference between the declarative and imperative approach is: Declarative: You will say what […]


[What Is] SDN & NFV

by Filip Čúzy | Leave us your feedback on this post! For newcomers to our blog – welcome to a series on explanations from the world of software development. Today, we will be looking at what software-defined networking is – what it stands for, it’s past, present, future – and more. What is SDN […]

Firewall Orchestration by

Cloud-Native Firewall Orchestration w/ ServiceNow®

by Slavomír Mazúr | Leave us your feedback on this post! s.r.o., its products or services, are not affiliated with ServiceNow®, neither is this post an advertisement of ServiceNow® or its products. ServiceNow® is a cloud-based platform, that enables enterprise organizations to automate business processes across the enterprise. We have previously shown, how to use ServiceNow® […]

[NSO Guide] Cisco NSO with

by Samuel Kontriš | Leave us your feedback on this post! 3/24/2020 Update: Small tweaks in the code used in our demonstration, enjoy! This is a continuation of our guide on the Cisco Network Service Orchestrator. In our previous article, we have shown you how to install and run Cisco NSO with three virtual devices. […] Guide for Cisco NSO

[NSO Guide] Cisco Network Services Orchestrator

by Samuel Kontriš | Leave us your feedback on this post! 3/23/2020 Update: Small tweaks in the code used in our demonstration, enjoy! A network can get messy. That is why many service providers require a Network Orchestrator, to fill the gap between managing hundreds of devices & corresponding services like SNMP, NETCONF, REST and […]

A Guide on ONAP SDN-C & Cisco NSO

[NSO Guide] Cisco NSO with SDN-C (ONAP)

by Samuel Kontriš | Leave us your feedback on this post! Welcome to the third and final part of our guide on Cisco’s Network Service Orchestrator. In previous parts, we managed to install and run the NSO on Ubuntu & connected it with Prerequisites This tutorial was tested on Ubuntu 18.04 LTS. In this […]

OpenAPI 3.0 Integration in OpenDaylight

OpenAPI 3.0 & OpenDaylight: A Initiative has created a commit in the official OpenDaylight repository, which updates the version of Swagger generator to OpenAPI 3.0. This feature allows us to easily generate a JSON with RESTCONF API documentation of OpenDaylight RESTCONF applications and import it into various services, such as ServiceNow®. This feature is not only about the generation of JSON with […]

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AF_XDP featured image / logo

[What Is] XDP/AF_XDP and its potential

What is XDP? XDP (eXpress Data Path) is an eBPF (extended Berkeley Packet Filter) implementation for early packet interception. Received packets are not sent to kernel IP stack directly, but can be sent to userspace for processing. Users may decide what to do with the packet (drop, send back, modify, pass to the kernel). A […]

Network Service Mesh & CNF's by

[Integration] Network Service Mesh & Cloud-Native Functions

by Milan Lenčo & Pavel Kotúček | Leave us your feedback on this post! As part of a webinar, in cooperation with the Linux Foundation Networking, we have created two repositories with examples from our demonstration “Building CNFs with VPP and Network Service Mesh + VPP Traceability in Cloud-Native Deployments“: CNF NSM Example VPP Traceability […]

Business Update for March 2020

Business Update: March 2020

Here at, we are saddened by the current situation in the world, regarding the COVID-19 outbreak and are fully supporting everybody in the front-line of this fight. As the world is continuously relying on stable networks and improvements in technology, our day-to-day business needs to continue as usual. Firstly, we needed to asses the […]

[OpenDaylight] Sodium: A Developers Perspective

by Robert Varga | Leave us your feedback on this post! continued to be the leader in terms of contributions to the OpenDaylight codebase. While our focus remained on the core platform, we also dabbled into individual plugins to deliver significant performance, scalability and correctness improvements. We are therefore glad to be a significant […]