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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 143

Scott Lowe

Here’s a quick look at using Envoy as a load balancer in Kubernetes. I saw this blog post about Curiefense , an open source Envoy extension to add WAF (web application firewall) functionality to Envoy. It’s a good starting point for thinking about operating your own active-active architecture. Virtualization.

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Why Kubernetes Is So Popular in the Tech World

Galido

Information Technology Blog - - Why Kubernetes Is So Popular in the Tech World - Information Technology Blog. This tool automates deploying, scaling, and managing containerized applications on a cluster of servers (virtual or bare metal). You cannot possibly deny that Kubernetes is built on a very mature and proven architecture.

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Technology Short Take 143

Scott Lowe

Here’s a quick look at using Envoy as a load balancer in Kubernetes. I saw this blog post about Curiefense , an open source Envoy extension to add WAF (web application firewall) functionality to Envoy. It’s a good starting point for thinking about operating your own active-active architecture. Virtualization.

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Technology Short Take 88

Scott Lowe

Romain Decker has an “under the hood” look at the VMware NSX load balancer. This graphical summary of the AWS Application Load Balancer (ALB) is pretty handy. This version introduces vulnerability scanning (leveraging the Clair project ), and Henry Zhang has a blog post with more details.

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Technology Short Take #25

Scott Lowe

Some folks from Nicira (now part of VMware) recently published a blog post discussing the OVSDB IETF draft (see here ). 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. Virtualization. Networking.

Storage 92
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CLDS006: Exploring New Xeon E5 Optimizations for 10 Gb Ethernet

Scott Lowe

Using 1 GbE would have required too many ports, too many cables, and too many switches; 10 GbE offered Expedient a 23% reduction in cables and ports, a 14% reduction in infrastructure costs, and offered a significant bandwidth improvement (compared to the previous 1 GbE architecture). it’s not a great general-purpose solution.

Intel 109