Network namespaces in 5 min

Welcome to this brief reading of Network namespaces in 5 min. You will find answer for questions like: What are they? How they works? How they can be configured? Reader would need some understanding of Linux. If you want to know more about this sort things check my playlist “Great presentations and demos of K8s…

Introduction to BGP and cloud networking

This post is intended for people that is just entering to BGP and cloud networking (i.e. SDN). We’ll bring an introduction to BGP fundamental concepts.  BGP is fundamental for SDN to scale out large networks in the Datacenter for end-points attached to containers and virtual servers. Border Gateway Protocol (BGP) Let’s start saying that BGP…

Introduction to QoS and Cloud Networking

Relevant technologies like DPDK or SmartNICs are starting to come up lately to bring better performance options to CNF/VNF instances. Sharing a Linux kernel among other applications, is not good enough for some network functions. However, there are still other options before considering replacing your hardware. Quality of Service or QoS could be the cheapest…

Bridge your dummy interface in centos7

I had to start using a dummy interface in my server to make it portable, like a demo in-a-box. Every time that I’ve tried to disconnect it and use other network. I had to make a lot of changes to my configuration: very messy. Basically, I will tell you how to bridge your dummy interface…