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Configuring OSPF
147
Internet Address 10.11.230.20/24, Area 0
Process ID 1, Router ID 172.16.240.1, Network Type
BROADCAST, Cost: 10
Transmit Delay is 1 sec, State DR, Priority 1
Designated Router (ID) 172.16.240.1, Interface address
10.11.230.20
No backup designated router on this network
Timer intervals configured, Hello 10, Dead 40, Wait 40,
Retransmit 5
Hello due in 00:00:08
Neighbor Count is 0, Adjacent neighbor count is 0
Suppress hello for 0 neighbor(s)
Loopback0 is up, line protocol is up
Internet Address 172.16.240.1/24, Area 0
Process ID 1, Router ID 172.16.240.1, Network Type
LOOPBACK, Cost: 1
Loopback interface is treated as a stub Host
Serial0 is up, line protocol is up
Internet Address 172.16.10.5/30, Area 0
Process ID 1, Router ID 172.16.240.1, Network Type
POINT_TO_POINT, Cost: 64
Transmit Delay is 1 sec, State POINT_TO_POINT,
Timer intervals configured, Hello 10, Dead 40, Wait 40,
Retransmit 5
Hello due in 00:00:02
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 172.16.241.1
Suppress hello for 0 neighbor(s)
Serial1 is administratively down, line protocol is down
OSPF not enabled on this interface
show ip ospf neighbor
This is a very useful command. It summarizes the pertinent OSPF informa-
tion regarding neighbors and the adjacency state. If a DR or BDR exists, that
information is also displayed. Here is a sample:
RouterA#show ip ospf neighbor
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