![Internet Traffic Policies and Routing Vic Grout Centre for Applied Internet Research ( CAIR ) University of Wales NEWI Plas Coch Campus, Mold Road Wrexham, LL11 2AW, UK [email_address] http://www.newi.ac.uk/Computing/Research NEWI North East Wales Institute of Higher Education - Centre for Applied Internet Research](https://image.slidesharecdn.com/itpr-1259494586-phpapp02/85/internet-1-320.jpg)
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- 1. Internet Traffic Policies and Routing Vic Grout Centre for Applied Internet Research ( CAIR ) University of Wales NEWI Plas Coch Campus, Mold Road Wrexham, LL11 2AW, UK [email_address] http://www.newi.ac.uk/Computing/Research NEWI North East Wales Institute of Higher Education - Centre for Applied Internet Research
- 3. Example 1 Access Control Lists (ACLs) Routers
- 4. Example 1 Access Control Lists (ACLs) Rules
- 5. Example 1 Access Control Lists (ACLs)
- 6. Example 1 Access Control Lists (ACLs)
- 7. Example 1 Access Control Lists (ACLs) Optimal? No – considerable duplication
- 8. Example 1 Access Control Lists (ACLs) True optimum can only come from taking a ‘global’ view
- 9. Example 2 Traffic Routing in Wireless Networks Wireless nodes Feasible links
- 12. Traffic Routing in Wireless Networks: Feasible Links
- 13. Traffic Routing in Wireless Networks: MST Solution Number of switches
- 20. Traffic Routing in Wireless Networks: MST Solution Number of switches
- 21. Traffic Routing in Wireless Networks: Add Solution Number of switches
- 22. Traffic Routing in Wireless Networks: Drop Solution Number of switches Heavily loaded links
- 23. Example 3 Routing Algorithms
- 24. Example 3 Routing Algorithms Routers exchange link status information …
- 25. Example 3 Routing Algorithms ? ? ? ? ? ? ? ? Routers exchange link status information … … to build a complete knowledge of the current network topology.
- 26. Example 3 Routing Algorithms Then each router …
- 27. Example 3 Routing Algorithms Then each router … … calculates the shortest path to each of the others in turn
- 28. Example 3 Routing Algorithms Is this optimal?
- 29. Example 3 Routing Algorithms Is this optimal? No!
- 31. Routing Algorithms: Routers and Networks Network Network Network Network
- 40. Any questions? Vic Grout Centre for Applied Internet Research ( CAIR ) University of Wales NEWI Plas Coch Campus, Mold Road Wrexham, LL11 2AW, UK [email_address] http://www.newi.ac.uk/Computing/Research Thank you NEWI North East Wales Institute of Higher Education - Centre for Applied Internet Research