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Hi, I'm Iljitsch van Beijnum. I'm a freelance network architect, specializing in internet routing (BGP) and interconnection between networks (peering and more).

This is my old website that mixes work-related and less work-related articles and links. I have a new business web site at and a new personal web site at (which has all the new content that's posted here). Some of the blog posts here are in Dutch, others are in English.

Archiving data: storage prices in 2013 and 2020

Back in 2013, I wrote a blog post about archiving. In it, I compared the costs per terabyte (and the weight per terabyte) of several ways to store data for archival purposes. When I read Beyond Time Machine: 5 Archiving over at The Eclectic Light Company blog, I realized that it’s time revisit this topic.

Full article / permalink - posted 2020-04-19

BGP hands-on training courses in 2020

For 2020, there will be hands-on BGP training courses in association with NL-ix on the following dates:

Full article / permalink - posted 2020-02-12 - Nederlandse versie

BGP hands-on trainingen in in 2020

In 2020 zijn er BGP hands-on trainingen in samenwerking met NL-ix op de volgende dagen::

Volledig artikel / permalink - geplaatst 2020-02-12 - English version



Image link - posted 2020-01-31

Winner doesn't take all: IPv6 is now a success, even at 25% deployment

We shouldn't gauge the success of IPv6 by looking at how much IPv6 replaces IPv4, but by how much IPv6 complements IPv4. And it's already doing that quite well today by making IPv4aaS (IPv4 as a service) possible. And IPv4aaS will make ISPs require IPv6 when peering with streaming services and other big content providers.

Permalink - posted 2020-01-23 - Nederlandse versie

IPv6 is nu een succes, zelfs bij 25% adoptie

We moeten niet het succes van IPv6 afmeten aan in hoeverre IPv6 IPv4 vervangt, maar in hoeverre IPv6 IPv4 aanvult. En dat doet het al heel aardig op dit moment door IPv4aaS (IPv4 as a service) mogelijk te maken. En IPv4aaS zal ervoor zorgen dat ISPs IPv6 gaan eisen voor peering met streamingdiensten en andere grote contentaanbieders.

Permalink - posted 2020-01-23 - English version

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