Wired and Wireless network on Ubuntu for OpenStack

In data center and cloud environment, servers used for hosting the virtual machines usually have more than one wired networking interfaces. In fact there are multiple Ethernet interfaces on each server. It is common practice to use one of the interface for ‘managing’ the host itself. This interface is usually accessible from corporate networks and administrators will use this interface for doing SSH into the server. The other interfaces are usually used for virtual machine traffic or storage traffic.

Intel NUC DN2820FYKH Review

Most of us have “cloud storage” accounts to keep our important files backed up in a central location and yet be accessible across devices. But these accounts have limits unless you are willing to shell out more money. Also the network traffic for big files will eat up into your monthly broadband quota (especially in India). Therefore it is still common to have a “backup” store at home. Most people are probably using USB hard disk drives for this.

OpenStack Networking – an introduction

I continue the series on virtual networking with an overview of OpenStack networking concepts. OpenStack is an open source project with an aim to create a scalable cloud operating platform. The primary goal of this software platform is to help build public and private clouds. Specifically it allows users to build and operate infrastructure as a service or IaaS clouds.

Are the NFV products comparable to dedicated-hardware products?

This is a guest post by Suryanarayana M N V. Having led teams working on Networking protocols, Surya has in-depth knowledge of networking. He has keen interest in the areas of Network Virtualization and NFV.

The most common NFV product that I had come across is in security domain viz., firewalls. To get an idea on how good they are, I checked the Juniper, PaloAlto & Fortinet Virtual Firewall products.

Introduction to NFV

This is a guest post by Suryanarayana M N V. Having led teams working on Networking protocols, Surya has in-depth knowledge of networking. He has keen interest in the areas of Network Virtualization and NFV. One of the buzzwords in the networking industry is NFV. In a series of blogs, I plan to share my understanding of NFV, its benefits, some of the products and its relationship with SDN.

KVM and QEMU – do you know the connection?

If you were to ask someone “what is the most popular open source hypervisor” chances are that the answer will be KVM. Indeed KVM (or Kernel-based Virtual Machine) has played a key role in the open source Linux based virtualization environment. However is it really a hypervisor? Moreover, can KVM by itself run virtual machines? We will delve more into such questions in this blog. We will also understand the relationship between KVM and QEMU (Quick EMUlator).

Introduction to VMware Virtual Networking

In the previous blog we saw how Linux supports virtual networking using bridges. VMware vSphere is the most popular hypervisor brand in the world and it is natural that it also supports virtual networking. In fact vSphere supports some very advanced networking functions, that are not available in most of the other hypervisors. Let me introduce the key elements of VMware virtual networking. After reading this blog, I recommend that you read the official guide about virtual networking.