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On Network Virtualization and SDN

Scott Lowe

Is there a difference between network virtualization and Software-Defined Networking (SDN)? So, in a similar fashion to my post on network overlays vs. network virtualization , I thought I’d weigh in with some thoughts. With this definition in hand, let’s compare network virtualization to SDN.

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Technology Short Take 123

Scott Lowe

Eric Sloof mentions the NSX-T load balancing encyclopedia (found here ), which intends to be an authoritative resource to NSX-T load balancing configuration and management. Servers/Hardware. Now I really want to see hardware security key support in the desktop and mobile apps! Virtualization.

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Technology Short Take 153

Scott Lowe

Xavier Avrillier walks readers through using Antrea (a Kubernetes CNI built on top of Open vSwitch—a topic I’ve touched on a time or two) to provide on-premise load balancing in Kubernetes. Servers/Hardware. Cabling is hardware, right? Virtualization. Some of it is still too advanced for me right now.

Linux 74
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CLDS006: Exploring New Xeon E5 Optimizations for 10 Gb Ethernet

Scott Lowe

Next the presentation shifts focus a little bit to discuss FCoE. Johnson shows a great diagram that reviews all the various types of VM-to-VM communications that can exist in modern data centers: VM-to-VM (on the same host) via the software-based virtual switch (could be speeds of 30 to 40 Gbps in this use case).

Intel 108
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Technology Short Take 95

Scott Lowe

has a nice write-up on Cisco XR stemming from a presentation at NFD 17. VPCs, or Virtual Private Clouds, are Amazon’s software-defined networking mechanism for workloads running on AWS.). Viktor van den Berg writes on deploying NSX load balancers with vRA. Servers/Hardware. Virtualization. Networking.

Vmware 60
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Technology Short Take #25

Scott Lowe

Erik Smith, notably known for his outstanding posts on storage and FCoE, takes a stab at describing some of the differences between SDN and network virtualization in this post. Servers/Hardware. Virtualization. In any case, this article by Frank Denneman on Storage DRS load balancing frequency might be useful to you.

Storage 92
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Technology Short Take #58

Scott Lowe

Before I present this episode’s collection of links, articles, and thoughts on various data center technologies, allow me to first wish all of my readers a very merry and very festive holiday season. If you’d like to play around with Cumulus Linux but don’t have a compatible hardware switch, Cumulus VX is the answer. Servers/Hardware.

Vmware 60