iljitsch.com

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Hi, I'm Iljitsch van Beijnum. This page has all posts about all subjects.

BGP and IPv6 routing training courses on 6 and 7 October

I've been teaching BGP training courses for more than ten years now. Shortly after my BGP book came out, I teamed up with NL-ix, the operators of the neutral internet exchange, to teach the people connecting to NL-ix (and anyone else interested) about BGP. What makes our training course unique is that we don't just cover the theory, but also have people configure BGP on a Cisco router, where they have to set up peerings toward the other participants.

When we added an IPv6 training course, the content was based on my IPv6 book, which didn't really lend itself to the same approach because it covers a much wider range of topics: enabling IPv6 on various operating systems, routing, tunnels, DNS, applications, security. I was never really happy doing just theory with no hands-on part. So I decided to focus more on routing with the IPv6 training course, and include tunnel, OSPF, BGP and DHCPv6 assignments so the participants can get some hands-on experience with the new protocol. As always, there were a few surprises when participants were trying to do the assignments for the first time, but the new format was a success.

If you're interested in one of these training courses (or both), the next dates are October 6 for the BGP course and October 7 for the IPv6 routing course. The location is the NL-ix office in The Hague, and the language will be English unless all participants speak Dutch. (The next time after October the language will be Dutch.) See the NL-ix training course page for details and the sign up form.

Permalink - posted 2014-07-16 - 🇳🇱 Nederlandse versie

Comparing black-and-white film and digital

I've been experimenting with shooting film a bit recently, which gives me that nice retro feel. And nothing is more retro than shooting black-and-white film. So let's compare the results to the black-and-white images current cameras produce.

In addition to using some classic Ilford HP5 film (well, Ilford HP5 Plus these days), which is very similar to Kodak Tri-X, I also wanted to try out some chromogenic film. Chromogenic film is black-and-white film that is developed using the same C41 process that is used to develop regular color negatives, so you can have it processed pretty much anywhere.

Full article / permalink - posted 2014-07-13

PCC op de brug over het kanaal

Image link - posted 2014-07-12 in

Treinkaartje 1839 - 2014

Image link - posted 2014-07-09 in

De nieuwe Avenio tram staat op het punt op Haagse rails geplaatst te worden

Image link - posted 2014-07-05 in

Vint Cerf about IPv4's 32-bit address length

A few weeks ago, I wrote With the Americas running out of IPv4, it's official: The Internet is full for Ars Technica, where I explain where all the IPv4 addresses went.

In the comments, a reader posted a link to an interview with Vint Cerf where Cerf explains how we ended up with the limited 32-bit IPv4 address space. Well worth a listen. The 32-bit thing starts 26 minutes in. Basically, IPv4 is the test version of IP, and IPv6 is the production version!

Permalink - posted 2014-07-04

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