Azure RedHat Openshift and Hybrid Networking

Hey there! As you might have read, some time ago I wrote a pretty detailed “A day in the life of a packet” post series on how networking works in detail in Azure RedHat Openshift (ARO). Some of the feedback around those blog posts was that they are far too technical, and hard to read … Continue reading Azure RedHat Openshift and Hybrid Networking

A day in the life of a packet in Azure Redhat Openshift (part 2)

In this part 2 of my blog series around ARO networking we will have a look and how inbound and outbound Internet connectivity works, as well as connectivity between different pods in the cluster. Other posts in the series: Part 1: Intro and SDN Plugin Part 2: Internet and Intra-cluster Communication Part 3: Inter-Project and … Continue reading A day in the life of a packet in Azure Redhat Openshift (part 2)

Setting up /31 interfaces and BGP on a CentOS machine

After reading the title above, you might be wondering why the heck you would want to do such a thing. The reason in my particular case is to connect an Azure Stack installation to an Azure ExpressRoute circuit, since Azure Stack needs some kind of connectivity to Azure. Azure Stack uses internally BGP and /31 … Continue reading Setting up /31 interfaces and BGP on a CentOS machine

What do Cisco ACI, microsegmentation, service insertion, REST and Docker containers have in common?

Lately I have been involved in quite some conversations, where organisations have shown a lot of interest in the integration between Cisco ACI and F5 BigIP and BigIQ (or should I say iWorkflow?). As you might know, Cisco ACI offers the option to integrate L4-L7 services in the network. What does this mean? Optionally, you … Continue reading What do Cisco ACI, microsegmentation, service insertion, REST and Docker containers have in common?

Using NX-API to deploy full networks

Do you have a network lab to try out new technologies? Then you might have experienced this problem: you finished testing technology A, and you start testing technology B. For that you need to reconfigure your devices, obviously. Now you need to try out something new in technology A, for example a new functionality brought … Continue reading Using NX-API to deploy full networks

A command-line REST client for ACI

First of all, Happy New Year! Thanks for looking at my first post in 2016. As you might already know, Cisco ACI is a new concept of network management. In short, it is a network that brings along embedded network management functionality, that sits in a centralised controller cluster. If you want to manage a … Continue reading A command-line REST client for ACI