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Tag Archives: SDN

What is SDN?

Software Defined Networking (SDN) means different things to different people. Some of the key words often associated with SDN are Automation, OpenFlow, Network virtualization and Overlay networking. Lets look at each of these in turn and see how they fit with SDN. Automation Managing large networks has always been painful, …

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What is it? Micro-Segmentation is a way to apply a granular security policy that protects and restricts access to devices in your network. Isn’t that a Firewall? You can think of it as a distributed host firewall that doesn’t sit on your host. Huh? OK, so traditionally you have a …

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Cisco ACI Overview

Cisco Application Centric Infrastructure (ACI) Cisco ACI is the Cisco’s turnkey SDN solution. Currently based on the Nexus 9000 series of switches, the ACI abstracts the underlying Data Center network to a level where it can almost be seen as a service provider network for attached client systems. The solution …

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VMware NSX Overview

What is it? Part of VMware’s Software Defined Data Center (SDDC), NSX is VMware’s network and security solution. NSX a virtual alternative to the physical network appliances located in the Data Center placing routers, firewalls and load balancers into the hypervisor. This removes the reliance on the physical network and if you read some of the literature the network team. …

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