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Thumbnail of an article about How to configure VNFs using a Virtual Network Function Descriptor
NETWORKS

How to configure VNFs using a Virtual Network Function Descriptor

Virtual Network Functions (VNFs) are software network elements like routers, firewalls or load balancers that replace networking hardware. Network services are performed by dedicated software that runs on Virtual Machines (VMs) managed by Virtual Infrastructure Managers (VIMs). In this blog post, we describe how to configure VNFs using a Virtual Network Function Descriptor (VNFD) together with a Network Service Descriptor (NSD) and the Open Source MANO platform. Additionally, we will present an initial configuration of a new Virtual Machine (VM) instance using cloud-init.
Multiple authors

Multiple authors

on Feb 12, 2021
Thumbnail of an article about Managing data center physical infrastructure with Tungsten Fabric
NETWORKS

Managing data center physical infrastructure with Tungsten Fabric

A data center’s physical infrastructure can consist of multiple devices including switches and routers. Managing them can be a time-consuming and error-riddled process. Adding an SDN solution to your legacy data center network makes the entire problem even more complex. Tungsten Fabric, an open-source SDN controller, may be the answer. Read on to know more. Modern data centers are built as flat two/three layers of deeply interconnected devices known as a fabric. This leaf-spine architecture is robust and easy to scale out by adding new devices instead of replacing older devices with more powerful ones.
Paweł Marchewka

Paweł Marchewka

on Jan 27, 2021
Thumbnail of an article about Deploying a Kubernetes operator in OpenShift 4.x platform
CLOUD

Deploying a Kubernetes operator in OpenShift 4.x platform

Contrail-operator is a recently released open-source Kubernetes operator that implements Tungsten Fabricas a custom resource. Tungsten Fabric is an open-source Kubernetes-compatible, network virtualization solution for providing connectivity and security for virtual, containerized or bare-metal workloads. An operator needed to be adjusted to the OpenShift 4.x platform, which introduced numerous changes to its architecture compared with previous versions. In this blog post, you’ll read about three interesting use cases and their solutions.
Szymon Krasuski

Szymon Krasuski

on Jan 20, 2021
Thumbnail of an article about Tungsten Fabric architecture — an overview
NETWORKS

Tungsten Fabric architecture — an overview

SDN or Software-Defined Networking is an approach to networking that enables the programmatic and dynamic control of a network. It is considered the next step in the evolution of network architecture. To implement this approach effectively, you will need a mature SDN Controller such as Tungsten Fabric. Read our blog post to get a comprehensive overview of Tungsten Fabric architecture. Tungsten Fabric (previously OpenContrail) is an open-source SDN controller that provides connectivity and security for virtual, containerized or bare-metal workloads.
Multiple authors

Multiple authors

on Jan 14, 2021
Thumbnail of an article about The modern, interoperable DC — Part 3: Seamless and secure connectivity for edge computing and hybrid clouds
NETWORKS

The modern, interoperable DC — Part 3: Seamless and secure connectivity for edge computing and hybrid clouds (video)

In the third part of our “Modern DC” webinar series we focus on connectivity with resources located beyond the local data center, somewhere in the Internet. This includes extending Layer 2 and Layer 3 tunnels to public clouds (such as AWS, Azure and GCP), branch offices, Edge Computing servers and IoT devices based on single-board computers.
Multiple authors

Multiple authors

on Dec 16, 2020
Thumbnail of an article about How to create a custom resource with Kubernetes Operator
NETWORKS
CLOUD

How to create a custom resource with Kubernetes Operator

While developing projects on the Kubernetes platform I came across an interesting problem. I had quite a few scripts that ran in containers and needed to be triggered only once on every node in my Kubernetes cluster. This could not be solved using default Kubernetes resources such as DaemonSet and Job. So I decided to write my own resource using Kubernetes Operator Framework. How I went about it is the subject of this blog post. When I confronted this problem, my first thought was to use a DaemonSet resource that utilizes initContainers and then starts a dummy busybox container running `tail -f /dev/null` or another command that does nothing.
Szymon Krasuski

Szymon Krasuski

on Nov 12, 2020
Thumbnail of an article about Network monitoring challenges in heterogeneous environments
OPERATIONS
NETWORKS

Network monitoring challenges in heterogeneous environments

The growing complexity of network environments poses great challenges to effective network monitoring. This should come as no surprise: such environments can include bare metals (on-prem solutions), data centers, private and public clouds. Additionally, automation, orchestration and SDNs can greatly enhance your network management, but at the same time add yet another level of complexity. In this blog post, we will discuss the main challenges related to monitoring and how to solve them to streamline the entire monitoring process.
Multiple authors

Multiple authors

on Oct 27, 2020
Thumbnail of an article about P4-programmable smartNIC controlled by ONOS (video)
SOFTWARE DEVELOPMENT
NETWORKS

P4-programmable smartNIC controlled by ONOS (video)

The traditional NIC (Network Interface Card) is a relatively simple device equipped with Ethernet interface(s) and used to enable connectivity between machines. SmartNICs, by contrast, offer much more sophisticated capabilities and allow you to perform advanced operations on packets. SmartNICs are thus perfectly suited to optimize network performance in a data center, especially those that are programmable and offer the computing resources required.
Multiple authors

Multiple authors

on Sep 29, 2020
Thumbnail of an article about The modern, interoperable DC — Part 2: EVPN as a universal solution for VM, container and BMS networking
NETWORKS

The modern, interoperable DC — Part 2: EVPN as a universal solution for VM, container and BMS networking (video)

This video is a part of our series The modern, interoperable DC, which walks you through connectivity between different types of resources.
Multiple authors

Multiple authors

on Sep 4, 2020
Thumbnail of an article about The modern, interoperable DC — Part 1: Solving "last mile" problems with BGP (video)
NETWORKS

The modern, interoperable DC — Part 1: Solving "last mile" problems with BGP (video)

This video is a part of our webinar series The modern, interoperable DC, which walks you through connectivity challenges between different types of resources.
Multiple authors

Multiple authors

on Sep 2, 2020
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