Comparing Juniper Wistar to Eve-NG

Wistar is a tool to build virtual labs with Juniper gear. The main attraction is its ability to abstract devices consisting of separate machines in a single node in your topology. Wistar belongs in the realm of software like Eve-NG or GNS3 and brings some unique features to the table. Read on to find out more and see how it compares.

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Persistent changes to machines in Eve-NG

When using Eve-NG, most x86-based virtualization happens via Qemu. You place a so-called base image in your Eve-NG machine and that image gets used by all of your nodes. Active nodes exist as a linked clone of the base image. I ran into the need to make some persistent changes to a base image. I did not want to set up another machine just to adjust my images so I figured out how to use my Eve-NG machine to do it. Read on to find out how.
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ACM membership grants access to Safari Books

The Association for Computing Machinery (ACM) is a well known international learned society for IT professionals. I’ve known about ACM for a while because I encounter articles from their ACM Queue from time to time. I’ve looked at membership options before because they provide some benefits and because the cause of ACM is something that I would support. Until recently though, I couldn’t justify the costs of the yearly subscription which is 99 USD. That’s changed now, big time, because the professional membership now includes access to Safari Books Online.

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Networking Labs with Vagrant

Vagrant is a word that I’ve heard from time to time over the last couple of years. I knew the high-level concept but never really saw a use case, until now. My previous project had me setting up a VM on an ESXi box, taking a snapshot of a clean install and manually restoring the VM to the snapshot state every time I wanted to do a new test of my code. Standing up a single VM with a single snapshot isn’t that bad but it doesn’t scale. My next step is standing up labs with multiple machines. Vagrant can support a sensible workflow for those labs. Read on to find out why and how.

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Old Aerohive AP’s for the home

Because I run a virtual firewall at home, I have to provide a separate wireless solution. I started out with a cheap Sitecom AP. Later, I swapped that out for a Linksys WRT54GL that first ran custom Tomato firmware and DD-WRT after that. The Linksys got replaced by a Ubiquity that I kind of liked but not that much. When I noticed Aerohive AP120’s and AP121’s can be had on eBay below 20 bucks, I knew what I had to do.

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