OSPF Trouble 集锦 排错 详解

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                 r1–e0/0———————e0/0       —–r2

         e0/1     |

                  |       e0/1

                   r3

r1:

interface Ethernet0/0
ip address 10.10.13.1 255.255.255.0
half-duplex
end

interface Ethernet0/1
ip address 10.10.31.1 255.255.255.0
half-duplex
end

router ospf 10
router-id 10.10.3.3
log-adjacency-changes
network 10.10.13.1 0.0.0.0 area 0
network 10.10.31.1 0.0.0.0 area 0

r2

interface FastEthernet0/3
no switchport
ip address 10.10.13.2 255.255.255.252
end

router ospf 10
router-id 10.10.7.7
log-adjacency-changes
network 10.10.7.7 0.0.0.0 area 0
network 10.10.13.2 0.0.0.0 area 0

r3

interface FastEthernet0/3
no switchport
ip address 10.10.31.2 255.255.255.252
end

router ospf 10
router-id 10.10.8.8
log-adjacency-changes
network 10.10.31.2 0.0.0.0 area 0
network 10.10.43.1 0.0.0.0 area 43

现像

r1

#show ip ospf nei

Neighbor ID          Pri        State                Dead Time        Address              Interface

r2#show ip ospf nei

Neighbor ID          Pri        State                Dead Time        Address              Interface

r3#show ip ospf nei

Neighbor ID          Pri        State                Dead Time        Address              Interface

本题OSPF 邻居起不来 是因为掩码不一致

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