1. Network autoconfiguration

2. Hubs

Who receives what?

3. Multiple hubs

Who receives what?

4. What if we make a loop? 5. Switches

Who receives what?

6. SwitchesSelf-learning

Maps MAC addresses to port

7. If MAC address is unknown send to all ports (Flooding) 8. Entries are removed after timeout (aging time) For extra credit: find an animation that illustrates the mechanism. 9. Multiple switches

Who receives what?

10. What if we make a loop? 11. Spanning tree protocol Breaking loops.

Animation

12. Bridge Protocol Data Units & IEEE 802.1D -link 13. Exercise

Use wireshark on the schools network.

Where do you get STP packages and where don't you?

14. What information does the packages carry? (consult the BPDU link) 15. Routers

Which PC can connect to which PC?

16. Multiple routers

Which PC can connect to which PC?

17. What about loops? 18. Routing tables

This is repetition...

19. Homework Each group picks a topic

Autonomous System

20. Routing algorithms

Link state

21. Distance-vector OSPF (LS) 22. RIP (DV)

10 minute presentations

23. Autonumous systems

ASN

24. IANA

RIPE etc.

Stub AS 25. Inter-AS vs. Intra-AS 26. IGP and EGP IGP (using RIP or OSPF) EGP (using BGP) 27. IGP

Linkt state

28. Distance vector 29. RIP 30. OSFP 31. Animation? 32. Border gateway protocol

Live demo!

Starthere

33. Choose a server an telnet to it 34. sho ip bgp summary 35. sho ip ngp