OSPF
224.0.0.5
224.0.0.6
ip protocol 89
Hello
LSU
LSAck
ip ospf pri
ip ospf cost
ip ospf hello
ip ospf dead
[ip ospf net]
band [kbps]

router-id
net 1.0.0.0 0.255.255.255 a 0
default-inf ori
auto ref [Mbps]

sh ip ospf nei
sh ip ospf data
sh ip ospf int
clear ip ospf process

11.1.4.2 adjancy condition: hello, dead, type
11.1.6.1 link state concept
11.1.7.1 Administrative Distance table
11.2.3.1 ospf commands
11.2.4.1 router-id order
11.4.1.2 five network types
*11.4.2.2 DR/BDR election