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Network autoconfiguration
Hubs <ul><li>Who receives what? </li></ul>
Multiple hubs <ul><li>Who receives what?
What if we make a loop? </li></ul>
Switches <ul><li>Who receives what? </li></ul>
Switches  Self-learning <ul><li>Maps MAC addresses to port
If MAC address is unknown – send to all ports (Flooding)
Entries are removed after timeout (aging time) </li></ul>For extra credit: find an animation that illustrates the mechanism.
Multiple switches <ul><li>Who receives what?
What if we make a loop? </li></ul>
Spanning tree protocol Breaking loops. <ul><li>Animation
Bridge Protocol Data Units & IEEE 802.1D -  link </li></ul>
Exercise <ul><li>Use wireshark on the schools network. </li><ul><li>Where do you get STP packages and where don't you?
What information does the packages carry? (consult the BPDU link) </li></ul></ul>
Routers <ul><li>Which PC can connect to which PC? </li></ul>
Multiple routers <ul><li>Which PC can connect to which PC?
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Itet2 networking autoconfiguration

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Itet2 networking autoconfiguration

  1. 1. Network autoconfiguration
  2. 2. Hubs <ul><li>Who receives what? </li></ul>
  3. 3. Multiple hubs <ul><li>Who receives what?
  4. 4. What if we make a loop? </li></ul>
  5. 5. Switches <ul><li>Who receives what? </li></ul>
  6. 6. Switches Self-learning <ul><li>Maps MAC addresses to port
  7. 7. If MAC address is unknown – send to all ports (Flooding)
  8. 8. Entries are removed after timeout (aging time) </li></ul>For extra credit: find an animation that illustrates the mechanism.
  9. 9. Multiple switches <ul><li>Who receives what?
  10. 10. What if we make a loop? </li></ul>
  11. 11. Spanning tree protocol Breaking loops. <ul><li>Animation
  12. 12. Bridge Protocol Data Units & IEEE 802.1D - link </li></ul>
  13. 13. Exercise <ul><li>Use wireshark on the schools network. </li><ul><li>Where do you get STP packages and where don't you?
  14. 14. What information does the packages carry? (consult the BPDU link) </li></ul></ul>
  15. 15. Routers <ul><li>Which PC can connect to which PC? </li></ul>
  16. 16. Multiple routers <ul><li>Which PC can connect to which PC?
  17. 17. What about loops? </li></ul>
  18. 18. Routing tables <ul><li>This is repetition... </li></ul>
  19. 19. Homework Each group picks a topic <ul><li>Autonomous System
  20. 20. Routing algorithms </li><ul><li>Link state
  21. 21. Distance-vector </li></ul><li>OSPF (LS)
  22. 22. RIP (DV) </li></ul><ul><li>10 minute presentations </li></ul>
  23. 23. Autonumous systems <ul><li>ASN
  24. 24. IANA </li><ul><li>RIPE etc. </li></ul><li>Stub AS
  25. 25. Inter-AS vs. Intra-AS </li></ul>
  26. 26. IGP and EGP IGP (using RIP or OSPF) EGP (using BGP)
  27. 27. IGP <ul><li>Linkt state
  28. 28. Distance vector
  29. 29. RIP
  30. 30. OSFP
  31. 31. Animation? </li></ul>
  32. 32. Border gateway protocol <ul><li>Live demo! </li><ul><li>Start here
  33. 33. Choose a server an telnet to it
  34. 34. “sho ip bgp summary”
  35. 35. “sho ip ngp <IP>” </li></ul></ul>

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