AS we had no Barcamp any more in Berlin since 2008, I’m glad to see that there’s another CloudCamp this year. This time it’s in the BCC at Alexanderplatz, famous for the CCC Congress between Christmas and New Year’s Eve each year. See you there, it’s free !
Archive for the 'Berlin' Category
Now updated: Nice video about Internet Exchanges Points (IXPs) like BCIX:
At Euro-IX Meeting in Prague, there were a couple of presentations and discussions about Datacenters and Colocations. I was asked, which colocation providers are available in Berlin today, and here’s my list for you:
Area Lützowstrasse:
- I/P/B/ Carrier Colo (BCIX Peering Switch Location)
- DNS:NET Colocation
- I.T.E.N.O.S. Colocation
Area Gradestrasse:
Area Alboinkontor:
Kitzingstrasse:
- Global Crossing Colocation
And the latest and biggest Data Center in Berlin:
There are a couple of more, but smaller Colos in Berlin where I’ve no details about. Please let me know, and I’ll add them in this article.
If you need an offer for Colo or Rackspace in Berlin, please let me know, also.
Starting from April 2009 until maybe October 2009 you can climb the 456 gasometers stairs up to the roof of Berlin. With about 30 Euro Ticket fee, it’s not that cheap, but still worth visting the Gasometer in Berlin Schöneberg. If 78m are to high for you or you don’t have the chance to visit Berlin, you can enjoy my pictures with flickr slideshow.
CloudCamp Berlin 2009 has still free seats, register here, it’s free.
This Blog is now reachable via IPv6 http://2A00:CD0:1:1810::15 in addition to IPv4. As my DNS provider Hosteurope does not support AAAA DNS records, which is necessary for resolving www.wiik.de to the IPv6 address, I also have to switch my DNS to UM. The unbelievable Machine Company in Berlin offers a IPv6 hosting and DNS infrastructure. Moving the domains to another provider will need a couple of days, of course. By the way, this blog is running in a Dual Stack IPv4 / IPv6 Sun Solaris 10 10/08 Zone on ZFS, now.
Was ist Peering, BGP4, und was genau macht ein Internet Exchange? Das und ähnliches werde ich des öfteren gefragt, vor allem, seit dem ich technischer Vorstand des Berliner Internet Exchange (BCIX) bin. Auf der deutschen Wikipedia Seite findet man nur eine sehr kurze Erklärung, die englische Seite ist da schon genauer.
Hier eine kurze Zusammenfassung:
Es gibt weltweit viele verschiedene Internetprovider (ISP), jeder relevante ISP verfügt über einen eigenen IP-Backbone und über ein Autonomes System, welches durch eine AS-Nummer und eine Anzahl von IPv4 und IPv6-Adressen repräsentiert wird.
Die AS-Nummer und die IP-Adressen erhält man als ISP in Europa vom RIPE.
Damit ein Nutzer von einem DSL Provider (z.B. Versatel) mit seinem Webbrowser die Website, die bei einem Hostinganbieter (z.B. Strato) gehostet ist, aufrufen kann, müssen diese beiden ISPs ihre Datennetze über das IPv4 / IPv6 Routing Protokoll BGP4 verbinden. Das nennt man “Peering”. Typischerweise verbinden deutsche ISPs ihre Datennetze an Internet Exchanges (auch Peering-Points genannt), wie dem BCIX oder dem DE-CIX in Deutschland. Zwischen gleich “großen” ISPs findet das Peering typischerweise ohne einen finanziellen Kostenausgleich statt. Da große ISP oder auch interntionale Tier-1 Carrier (z.B. Level(3) ) aufgrund ihres weltweit umspannenden Backbones (=teuer) lieber Internet Traffic verkaufen als kostenlos zu peeren, verwendet man hier den Begriff Transit statt Peering.
Da nicht alle ISPs weltweit an einem einzigen Internet Exchange angeschlossen sind, sind die Verbindungen zwischen zwei ISPs oft nicht direkt, sondern gehen über ein oder mehrere Transit ISPs.
Wie funktioniert das praktisch?
Ein ISP (z.B. The unbelievable Machine Company) hat eine Leitung mit einer Bandbreite von 1 Gbit/s zu einem BCIX Switch in einem Telehouse (in diesem Fall e-shelter) in Berlin. Der BCIX vergibt an den ISP einen konfigurierten {Fast|Gigabit|10Gigabit}Ethernet Port, eine IPv4 und eine IPv6 Ip-Adresse, auf welche der ISP seinen Router konfiguriert. Da andere ISPs am BCIX auch IP-Adressen vom BCIX haben, können nun BGP4 Routing-Sessions zwischen den peerenden ISPs eingerichtet und IP-Internettraffic kostenneutral ausgetauscht werden.
Beginning with a nice Barcamp opening party last Friday at Möbelfabrik the Berlin webweek starts for me. BarCamp 3 Berlin on Saturday and Sunday at Hauptstadtrepräsentanz der Deutschen Telekom was really great. About 500 people attended BarCamp3 and they easily fit in the great location. The organization was quite perfect, might be to perfect for a BarCamp 
. And it was the BarCamp with the biggest twitter wall ever, as you can see in the picture (more on flickr):
On Tuesday, O’Reilly’s web2.0 EXPO Berlin started with the workshop sessions day. The location this year was much better than last year, but for all of you, who have ever been at Chaos Communication Congress at BCC between Christmas and New Year’s Eve, are knowing, that ways to use the facility could be different. My favorite session at the EXPO by the way, was “Scaling on the Cheap – Applying Lessons from Wikipedia” by Artur Bergman. Hope to see more about web performance and operations at BarCamps and at Web 2.0 Expo or even a Velocity Europe Conference !
This was a great week !
Although I was not able to visit all sessions at the RIPE 56 meeting this week in Berlin, it was really important for me to go there. Not only, that I had the chance to see the fantastic people I met at the Euro-IX Forum in Stockholm, RIPE meeting gives me also the opportunity to meet people I only knew via mail and telephone. And of course there were a lot of cool social events in the evenings over the week. My favorite event was the party in the club Trompete, sponsored by NETNOD.
Today, most of the time a was at the Sun Microsystems booth, talking to customers, partners and friends. I had the chance to see one Session today: Coding on the Shoulders of Giants by Matt Biddulph, CTO of Dopplr and this was great.
Now, I’ve a Dopplr account…
At the Sun Booth (Roman Strobl and Raju Bitter)
