1. T Network Application Frameworks and XML Additional material: On networks Sasu Tarkoma

2. FICIX FICIX (Finnish Communication and Internet Exchange - FICIX ry)
Started in 1993
Largest peering point in Finland
Neutral entity
Two Ethernet switches (Otaniemi,FICIX1), Pasila (FICIX2)
Each operator provides physical connection to the two switches
Only switches on data link layer (Ethernet)

3. FUNET Connects Finnish universities and institutes
Ethernet and dark fibre
Connections to Finnish ISPs
Peering in Finland with FICIX
Nordunet outside Finland, 10 Gbit/s

4. Source:

5. Weathermap

6. Peering Peering is done using BGP on top of the switches Transit
Always between two ISPs
Through physical connections
Settlement free (FICIX)
Exchange of routing information using BGP
Public peering (shared switch)
Private peering (point-to-point interconnection)
Transit
Costs money
Agreements and settlements

7. Source: http://en.wikipedia.org/wiki/Image:AS-interconnection.png

9. Next We have been covering network layer routing
Naming, Addressing, Routing
Naming and address resolution are critical
Much needed indirection (typical solution in distributed computing)
Distributed hash tables