Presented by Wendell Odom, CCIE No. 1624 pearsonITcertification/odom

1. OSPF Concepts and Configuration Presented by Wendell Odom, CCIE No. 1624 pearsonITcertification.com/odom

2. Welcome – Our Agenda Today • Tutorial • Q&A - Use WEBEX event CHAT to ask Wendell a Question • Live Event Survey Feedback wanted. Attendees from the Live event, please complete survey and be registered to win a FREE Cisco Press or Pearson IT Certification book, eBook or video of your choice. Three (3) winners.

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4. R2 R3 R4 R1 R4 Today’s Sample Network Fa0/0 10.1.12.2 10.2.2.2 S0/0/1 10.1.12.1 S0/0/0 Fa0/0 S0/0/1 S0/0/0 Fa0/0 10.1.1.1 10.1.13.1 10.1.13.3 10.3.3.3 S0/1/0 10.1.14.1 S0/0/0 Fa0/0 10.1.14.4 10.4.4.4 For copies of key figures during the live show, browse to Certskills.com, lower right. Captured at 150 % mag for OneNote

5. OSPF Configuration Options • Enable OSPF (router ospf process-id) • Enable OSPF on interfaces (network DDN WC_mask area area-id) • Set Router ID (router-id DDN, or • interface loopback number) • Set Hello and Dead Intervals (ip ospf hello-interval number, • ip ospf dead-interval number) • Tune OSPF metrics (ip ospf cost number, or • bandwidth number, or • auto-cost-reference-bandwidth number ) • Enable OSPF authentication (ip ospf authentication, or • area authentication) • Set Number of equal routes (maximum-paths number)

6. Likely Points of CCNA Config Confusion • Mechanics of network commands and wildcard masks • “Best” options for same • OSPF Process ID matching (or not) • Unique OSPF Router ID

7. OSPF WC Mask Options

8. R1 Exact Match network 10 . 1. 12 . 1 0 . 0 . 0 . 0 0 . 0 . 0 . 0 10 . 1 . 1 . 1 10 . 1 . 12 . 1 10.1.12.1 10 . 1 . 13 . 1 S0/0/0 10 . 1 . 14 . 1 Fa0/0 S0/0/1 10.1.1.1 10.1.13.1 S0/1/0 10.1.14.1

9. OSPF WC Mask Options

10. Match Subnet 255 . 255 . 255 . 255 255 . 255 . 255 . 0 Subnet Mask Wildcard Mask 0 . 0 . 0 . 255

11. R1 Match Subnet network 10 . 1. 12 . 1 0 . 0 . 0 .255 network 10 . 1. 12 . 0 0 . 0 . 0 .255 10 . 1 . 1 . 1 10 . 1 . 12 . 1 10.1.12.1 10 . 1 . 13 . 1 S0/0/0 10 . 1 . 14 . 1 Fa0/0 S0/0/1 10.1.1.1 10.1.13.1 S0/1/0 10.1.14.1

12. OSPF WC Mask Options

13. Match Class A Network 255 . 255 . 255 . 255 255 . 0 . 0 . 0 Default Class A Network Mask Wildcard Mask 0 . 255 . 255 . 255

14. R1 Match Network network 10 . 1. 12 . 1 0 .255 . 255 .255 network 10 . 0. 0 . 0 0 .255 . 255 .255 10 . 1 . 1 . 1 10 . 1 . 12 . 1 10.1.12.1 10 . 1 . 13 . 1 S0/0/0 10 . 1 . 14 . 1 Fa0/0 S0/0/1 10.1.1.1 10.1.13.1 S0/1/0 10.1.14.1

15. OSPF WC Mask Options

16. R1 Match All network 10 . 1. 12 . 1 255 .255 . 255 .255 255 .255 . 255 .255 network 0 . 0. 0 . 0 10 . 1 . 1 . 1 10 . 1 . 12 . 1 10.1.12.1 10 . 1 . 13 . 1 S0/0/0 10 . 1 . 14 . 1 Fa0/0 S0/0/1 10.1.1.1 10.1.13.1 S0/1/0 10.1.14.1

18. R4 R3 R2 R1 R4 Single Area OSPF Design Area 0 Fa0/0 10.1.12.2 10.2.2.2 S0/0/1 10.1.12.1 S0/0/0 Fa0/0 S0/0/1 S0/0/0 Fa0/0 10.1.1.1 10.1.13.1 10.1.13.3 10.3.3.3 S0/1/0 10.1.14.1 S0/0/0 Fa0/0 10.1.14.4 10.4.4.4 Captured at 150 % mag for OneNote

19. R4 R2 R3 R1 R4 Single Area OSPF Config router ospf 1 network 0.0.0.0 255.255.255.255 area 0 router ospf 1 network 0.0.0.0 255.255.255.255 area 0 router ospf 1 network 10.1.0.0 0.0.255.255 area 0 Fa0/0 10.1.12.2 10.2.2.2 S0/0/1 10.1.12.1 S0/0/0 Fa0/0 S0/0/1 S0/0/0 Fa0/0 10.1.1.1 10.1.13.1 10.1.13.3 10.3.3.3 S0/1/0 router ospf 4 network 10.1.14.0 0.0.0.255 area 0 network 10.4.4.0 0.0.0.255 area 0 10.1.14.1 S0/0/0 Fa0/0 10.1.14.4 10.4.4.4 Captured at 150 % mag for OneNote

20. R2 R3 R4 R1 R4 Multi-Area OSPF Design Area 0 Fa0/0 10.1.12.2 10.2.2.2 S0/0/1 10.1.12.1 S0/0/0 Fa0/0 S0/0/1 S0/0/0 Fa0/0 10.1.1.1 10.1.13.1 10.1.13.3 10.3.3.3 S0/1/0 10.1.14.1 Area 14 S0/0/0 Fa0/0 10.1.14.4 10.4.4.4 Captured at 150 % mag for OneNote

21. R4 R3 R2 R1 R4 Multi-Area OSPF Config (Unchanged) (Unchanged) router ospf 1 network 10.1.1.1 0.0.0.0 area 0 network 10.1.12.1 0.0.0.0 area 0 network 10.1.13.1 0.0.0.0 area 0 network 10.1.14.1 0.0.0.0 area 14 Fa0/0 10.1.12.2 10.2.2.2 S0/0/1 10.1.12.1 S0/0/0 Fa0/0 S0/0/1 S0/0/0 Fa0/0 10.1.1.1 10.1.13.1 10.1.13.3 10.3.3.3 S0/1/0 router ospf 4 network 10.1.14.0 0.0.0.255 area 14 network 10.4.4.0 0.0.0.255 area 14 10.1.14.1 S0/0/0 Fa0/0 10.1.14.4 10.4.4.4 Captured at 150 % mag for OneNote

22. R4 R2 R3 R1 R4 What are the OSPF Router IDs? Fa0/0 10.1.12.2 10.2.2.2 10.2.2.2 S0/0/1 10.1.12.1 S0/0/0 Fa0/0 S0/0/1 S0/0/0 Fa0/0 10.1.1.1 10.1.13.1 10.1.13.3 10.3.3.3 10.3.3.3 S0/1/0 10.1.14.1 10.1.14.1 S0/0/0 Fa0/0 10.4.4.4 10.4.4.4 10.1.14.4 Captured at 150 % mag for OneNote

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26. Q&A

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