Hitting 100% CPU after restore on Firepower Management Center

I recently purchased a new microserver to reduce my power footprint at home. And I had to move the FMC (Firepower Management Center) from the OpenStack deployment that I previously ran at home. However, I ran into several bugs in OpenStack that were fixed in later versions, but I couldn’t upgrade because of another bug. Essentially I hit a catch-22 and had to deploy a new FMC on that new microserver and use a restore to move the data and policies. In that process I did hit a bug for which I’d like to share some info on. Continue reading “Hitting 100% CPU after restore on Firepower Management Center”

Swift & Network programmability, a good combo? An introduction.

Swift is commonly known by iOS and MacOSX Software developers as Apple introduced the language in 2014 for MacOSX, iOS and Linux application development.
In my role as software engineer I’ve used different programming languages to build small tools, solutions or prototypes. For network programmability I’ve used Java as my primary language. I have my reasons, which I might share later in another post.

Network Programmability on the web pretty much evolves around Python. Is Swift mature enough and powerfull enough to be used for programming the network? Time to write up my experiences in a blog series. The first post is an introduction to Swift. Continue reading “Swift & Network programmability, a good combo? An introduction.”

Using scrivener as a blogging tool

It’s been a while since I’ve posted a blog. Time has just flown by and I can’t even believe that it’s almost october! I do have enough ideas to blog on but finding the time has been difficult. Today we had an ad hoc coffee hour with the Cisco Champions and the conversation was about which tool you use to write as well. Reason for this was of course also that I’ve started to author a CiscoPress book on Intent-based networking. Continue reading “Using scrivener as a blogging tool”