Ospf

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this presentation helps u to hwo to use ospf protocol

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Ospf

  1. 1. OSPF www.powerpointpresentationon.blogspot.com Presented by Devendra Kumar 8 th Sem. CP
  2. 2. Outline <ul><ul><li>Distance VS. Link-State </li></ul></ul><ul><ul><li>Route selection </li></ul></ul><ul><ul><li>Link-State network (OSPF) </li></ul></ul><ul><ul><li>Link-State Operation </li></ul></ul><ul><ul><li>Basic OSPF configuration and verification </li></ul></ul>
  3. 3. Distance Vector VS. Link-State
  4. 4. Route Selection RIP OSPF
  5. 5. OSPF Network Multiple-Area Single-Area
  6. 6. Terminology <ul><ul><li>Link </li></ul></ul><ul><ul><li>Link-State </li></ul></ul><ul><ul><li>Link-State db </li></ul></ul><ul><ul><li>Area </li></ul></ul><ul><ul><li>Cost </li></ul></ul><ul><ul><li>Routing Table </li></ul></ul><ul><ul><li>Adjacency db </li></ul></ul><ul><ul><li>DR / BDR </li></ul></ul>
  7. 7. OSPF path cost Cisco Default Value
  8. 8. OSPF Packet Header
  9. 9. Concept of link state routing
  10. 10. Cost (weight) in link state routing Cost is applied only by router Cost is applied when packet leaves the router
  11. 11. Link state packet Cost: weight (traffic, security level, link state)
  12. 12. Flooding of A ’ s LSP
  13. 13. Link state database
  14. 14. Costs in the Dijkstra algorithm
  15. 15. Shortest path calculation Step1 Step2
  16. 16. Shortest path calculation Step3 Step4
  17. 17. Shortest path calculation Step5 Step6
  18. 18. Shortest path calculation – S7
  19. 19. Shortest path calculation – S8
  20. 20. Shortest path calculation – S9
  21. 21. Shortest path calculation – S10
  22. 22. Shortest path calculation – S11
  23. 23. Shortest path calculation – S12
  24. 24. Shortest path calculation – S13
  25. 25. Link state routing table for router A
  26. 26. Basic configuration <ul><ul><li>Wildcard-Mask </li></ul></ul><ul><ul><li>Area ID </li></ul></ul>
  27. 27. Basic configuration - Loopback <ul><ul><li>Setup Loopback </li></ul></ul><ul><ul><ul><li>Ensure that at least one is active (For stability) </li></ul></ul></ul>
  28. 28. Basic configuration - priority <ul><ul><li>Setup priority </li></ul></ul><ul><ul><ul><li>For DR/BDR selection </li></ul></ul></ul>
  29. 29. OSPF verification show ip protocol show ip route show ip ospf show ip ospf interface show ip ospf database show ip ospf neighbor detail clear ip route * clear ip route a.b.c.d debug ip ospf events debug ip ospf adj
  30. 30. Thank You
  31. 31. Queries

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