Virtual Revolution BBC

1. Root Servers

2. Summary
• What are the Root Servers?
• DNS & stuff
• THE Root Servers
• Shutdown the Internet?
• Conclusion

3. What are the Root Servers?
- 1st step resolving host names
- Answer record in root zone
- 13 servers addresses
- With anycast  632 servers

4. DNS & stuff
- Essential to the Internet
- Phone book
- Map name to Internet ressources
- Type of records:
- SOA
- A/AAAA
- MX
- NS
- PTR
- CNAME

5. DNS & stuff
ARPANET  Early packet switching
- Telephone during business hours to the NIC
- Add manually
HISTORICALLY

6. DNS & stuff
Anycast addressing
One-to-nearest association
- Clusters of hosts
- 12/13 exist in multiple locations
For example: Root server H exists in 2 US location

7. DNS & stuff
Authoritative name servers
- Can me primary or secondary server

8. DNS & stuff
Regrouping all the information
VIDEO 1

9. THE Root Servers
Who is running them?

10. THE Root Servers
Where are they situated?

11. Shutdown the Internet?
VIDEO 2

12. Conclusion
Do you have any questions?