OSPF Virtual Link OSPF virtual link is use for that area far from backbone area 0. At this figure 1.1 area 2 is far from area 0 so area 2 can't reach other area. Figure 1.1 After configure OSPF, neighbor is up but router 2 don't see 3.3.3.0/24 network. R3#sh ip ospf nei Neighbor ID Pri State Dead Time Address Interface 2.2.2.2 1 FULL/DR 00:00:39 10.1.2.1 FastEthernet0/0 R2#sh ip route 10.0.0.0/30 is subnetted, 2 subnets C 10.1.2.0 is directly connected, FastEthernet1/0 C 10.1.1.0 is directly connected, FastEthernet0/0 One of OSPF rule all area must connect to area 0.In this cause we can use virtual link at area 1. R2 router ospf 1 router-id 2.2.2.2 log-adjace...
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