ipSpace.net blog

When I started the netlab project, Vagrant was the go-to tool if you wanted to build a virtual environment described in a text configuration file (an idea popularized as infrastruct...

TL&DR: Badly. The vagrant-libvirt plugin mysteriously crashes when an existing virtual network (with a different libvirt name) uses the same IP subnet as the desired management network.

Background: netlab is using the

As we discussed in the BGP-Free Core with SR-MPLS blog post, SR-MPLS works as a drop-in replacement for the traditional MPLS control plane. No wonder it works well (when properly implemented) with MPLS/VPN services – the second “

It goes without saying that if you want to configure (virtual) network devices with any semi-sane configuration mechanism1, the device must have a working IP address. Here’s the time-honored method2 to assign an IP address to a virtual network device...

One of the toughest hurdles to overcome when building your own virtual networking lab is the slog of downloading VM images for your favorite network devices and building Vagrant boxes[^VB] in case you want to use them with Vagrant or netlab.

You can find box-building recipes on the Internet...