"How DNS works" - Blender Animation

This Animation is simplified for a non IT-Audience!
Corrections & Notes (based on the feedback I got):
- the servers are not all in one rack
- the 13 root servers are "logical" servers not physical servers
- the root servers are not managed by ICANN (I've never mentioned it but someone stated it in the comment section)

Eine kurze, simple Animation wie eine DNS anfrage funktioniert als Beitrag für die VO GSI
Lizenz: Creative Commons

Rechtschreibfehler vorbehalten.

Category:

Science & Technology

Tags:

• blender
• how
• dns
• works

[markoer]

There are NOT 13 servers, and (answering to another comment) they are all not managed by ICANN. Also, from the animation you get the idea that root servers are just one rack unit machines next to the local DNS... they are 250 and totally disperse around the World, and addressed via anycast. I think this animation is highly misleading.

[ArchonFZ]

@markoer You are right, there are not exactly 13 physical servers, but as far as I know you can refer to them als as 13 logical servers. I don't remember that I've said that they are all managed by the ICANN but as far as I know the ICANN coordinates them in a way.

It's also right that the servers are not in one rack - thats mostly because I've had only 1 week for this animation and I was running out of time.

Also mention: this animation is simplified for a non IT-audience.

[ArchonFZ]

@markoer I've updated the description based on your feedback 

[ArchonFZ]

@ManOfMeans

I'm sorry - I misunderstood your previous comment - Thanks !

[ManOfMeans]

@ArchonFZ "Stupendous" means awe-inspiring, totally wonderful and very great. I was commenting on how very nice your animation was. It is a positive critisism! Good job

[digerpaji]

@ArchonFZ I don't know about english, but you do have a very kind heart. Thank you

[ArchonFZ]

@digerpaji

I hope that helps a bit and sorry for the typo-errors - my english is not that good ;-)

[ArchonFZ]

@digerpaji

I just mentioned the could cache the data, this depends on the configuration of the different servers. So how caching exactly done is dependent on the owner of that server.

The root servers get the IP-adresses from the registrar who is responsible for that specific top-level domain.

I'm sorry I can't answer your last question because it's too specific, but keep in mind that those registrar records keep more information than just the domainname to identify the DNS servers.

[digerpaji]

@ArchonFZ and one last question...Alot of times the address for the DNS server of a domain in whois is a a subdomain of that very domain. How is the ip address for such a nameserver suppose to be resolved?

I am sorry to bug you, but i can't get confirmed answers to these questions. Thank you SOO MUCH!!!

[digerpaji]

@ArchonFZ So the 13 ICAN root servers, and the ".tld" root server also cache the records along with the ISPs? Where does the root servers get the DNS server's ip from, from the registrar's records? Also I would assume any number of subdomains on the mail domain such as sub1.sub2.sub3.domain.tld are all records in the domain.tld's authoritative DNS server, and are cache further down the cache tree upon requests by users?