Linux Networking for the Cisco Admin

Posted on Sat 22 May 2021 in Networking

If your job as a network administrator is anything like mine then you often get pulled somewhat out of your comfort zone by supposed network issues in end hosts. Some of the problems I've had to deal with in this regard are the following:

  • Servers with multiple network interfaces where …

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A quick introduction to netsim-tools

Posted on Thu 13 May 2021 in Networking

The somewhat newly released netsim-tools by Ivan Pepelnjak has been on my "check-this-out" list for a couple of weeks now. It contains a set of tools to simplify the process of creating virtual network labs. In the following sections I will lay out how to quickly get started with labbing …


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Improvements to the Netbox webhook receiver

Posted on Sat 19 December 2020 in Programming

You can find the the code used in this post here. If you just need a webhook receiver for Netbox follow the instructions in the README.md file in that repository.

This is a follow-up to my earlier blog post Netbox webhook receiver with Python, Celery and FastAPI. Here we …


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Docker alongside GNS3 on a Windows / AMD system

Posted on Mon 23 November 2020 in Networking

When trying to run Docker and GNS3 on the same Windows system with an AMD processor I was faced with the following challenges:

  • Docker for Desktop on Windows requires Hyper-V or WSL2, the latter in turn requires Hyper-V
  • Hyper-V on AMD processors only supports nested virtualization as of 2020 (in …

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Netbox webhook receiver with Python, Celery and FastAPI

Posted on Sat 21 November 2020 in Programming

You can find the the code used in this post here. If you just need a webhook receiver for Netbox follow the instructions in the README.md file in that repository.

The Netbox IPAM and DCIM tool provides webhooks as a means of integrating with other software. External software you …


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About me

Posted on Mon 16 November 2020 in articles

Network engineer at CGI Germany, automation enthusiast and hobbyist sourdough bread baker.