1. Technical Solution Proposal
The NicIX team

2. IXP architectures Layer 2 Layer 3 Use a switch to interconnect ISPs
Layer 2 with router reflector
Layer 2 with route server
Layer 3
Use a router to interconnect ISPs

3. Selection of architecture
Layer 2 preferred
More autonomy to ISPs
No much processing in layer 2
The switch will not be bottleneck
Low cost
Simple for administration

4. Considered alternatives
Alternative A
Layer 2 with route reflector
Two switches for redundancy
Two route reflectors for redundancy
Alternative B
Layer 2

5. Alternative A - topology

6. Alternative A – some issues
The IXP is an AS( public ASN)
Public IP addresses used
BGP4 used
ISPs may/may not collocate their routers
Transit for IXP services
The IXP gets transit from one or more ISPs

7. Alternative A - transit using IGP

8. Alternative A - transit using IBGP

9. Alternative A - transit using private connection

10. Which transit method to use?
IGP
Not suitable for transit via multiple ISPs
Additional administrative overhead
IBGP
Suitable for transit via multiple ISPs
Private connection
Needs additional physical setup
IBGP preferred

11. Alternative B - Topology

12. Alternative B – some issues
The IXP is one AS (public ASN)
Public IP addresses used
BGP4 used
Full mesh peering between ISPs
IXP peers with the transit ISP(s)

13. Alternative B - transit

14. Favorite topology
Favorite Topology

15. Equipment - selection Switch Router Should have Gigabit Ethernet ports
Should have sufficient ports
Cost
Technical support
Router
Technical Support
Ipv6 support

16. Switch – list

17. Router - list

18. Overall equipment list

19. Other costs

20. Total cost

21. Refernces
Cisco Systems Inc., “Internet eXchange Points (IXP), peering and ISP Interconnection: The key stone of Internet Economy”, 1999
Barry Raveendran Greene , ”L2 Internet eXchange Point (IXP) using a BGP Route Reflector Technical Design, Configuration, and General Advice about IXPs”, 2000
Communication Systems Design 2002 Projects,”

22. Thank You