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Video of OSPF Adjacencies // CCNP ENCOR 350-401 Complete Course in Cisco CCNP course by Jeremy's IT Lab channel, video No. 70 free certified online
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0:00 Intro
0:27 OSPF packet types
2:28 The OSPFv2 header
3:38 1: Hello
4:53 2: DBD
6:35 3: LSR, 4: LSU, 5: LSAck
8:17 OSPF neighbor states
10:44 Down - Init - 2-Way
13:24 ExStart - Exchange
16:02 Loading - Full
17:34 Troubleshooting adjacencies
18:15 interface down
18:51 different subnet
19:44 mismatched netmasks
22:27 ACL blocking OSPF
23:30 MTU mismatch
25:02 OSPF disabled
26:08 passive interfaces
26:45 area mismatch
27:36 Hello/Dead timer mismatch
28:49 duplicate router IDs
29:51 network type mismatch
33:33 Review
34:25 Quiz 1
35:07 Quiz 2
35:55 Quiz 3
37:05 Outro
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