Cumulus Linux in Unetlab

Cumulus Linux provides a virtual appliance for testing and development. It’s free to download. The post below shows how to get Cumulus VX up and running in UNL.

How to add Cumulus VX to Unetlab

  • Follow my previous post to install Unetlab
  • Download Cumulus VX from here – Download the KVM edition

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Unetlab – Installation

During my CCIE studies I used Unetlab for all my lab activities. I found it to be extremely useful for starting up a quick lab with a few routers to work on a specific technology and also for full scale labs – running 30 devices wasn’t an issue.

The Unetlab host runs in a virtual machine or as a bare-metal server and supports IOU, Dynamips and QEMU nodes. The full list of the supported nodes is listed here. Since completing my CCIE I’ve continued to use it for multi-vendor labs, in future I’ll post about some of the other supported vendors, showing how to get their devices up and running.

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Why oh Why?

Why do we need another blog?…

….Why not? I was listening to the Packet Pushers Datanauts Podcast Episode 61, titled Trials & Tribulations Of Technical Blogging on a flight back from some work with a customer, thinking about the work that I’d been doing over the last few weeks. Off the top of the top of my head I could think of a few topics for posts. So here we are…

The content on this blog will mostly be about things that I’m working on, some technical demos and things that I think are relevant in the industry. It’s a very busy time for the industry at the moment, new technologies, vendors and products are appearing constantly. At my $dayjob I’m slowly seeing a change in the mindset of the people I talk to – traditional enterprises are open to new solutions (Cloud, SDN, SD-WAN etc), which means I need to know they are bringing to the table.

Please feel free to comment or provide feedback – I’m not too precious, so be honest! – the underlay network is the foundation. It provides the underlying physical transport, as a fabric, for the overlay to consume. The industry is adopting overlay networking models, where intelligence resides in the overlay. Importantly, the overlay is decoupled from the underlay, adding a layer of abstraction. This model will allow for innovative solutions in the overlay – but you’ve got to remember…

“the loftier the building, the deeper must the foundations be laid”


and .io because it’s cool 🙂