4-68192.168.1.2 Broadcast DROther 1 0 192.168.1.1 192.168.1.3The interface state DROther means the interface is not the DR/BDR.Configuring OSPF Virtual LinksNetwork requirementsz In the following figure, Area 2 has no direct connection to Area 0, and Area 1 acts as the TransitArea to connect Area 2 to Area 0 via a configured virtual link between Switch B and Switch C.z After configuration, Switch B can learn routes to Area 2.Figure 4-28 Network diagram for OSPF virtual link configurationArea 0Swtich AVlan-int30010.1.1.1/24Swtich BSwitch CSwitch D Area 2Vlan-int30010.1.1.2/24Vlan-int10010.3.1.2/24Vlan-int10010.3.1.1/24Virtual linkVlan-int20010.2.1.1/24Vlan-int20010.2.1.2/24Area 1Configuration procedure1) Configure IP addresses for interfaces (omitted)2) Configure OSPF basic functions# Configure Switch A. system-view[SwitchA] ospf 1 router-id 1.1.1.1[SwitchA-ospf-1] area 0[SwitchA-ospf-1-area-0.0.0.0] network 10.1.1.0 0.0.0.255[SwitchA-ospf-1-area-0.0.0.0] quit# Configure Switch B. system-view[SwitchB] ospf 1 router-id 2.2.2.2[SwitchB-ospf-1] area 0[SwitchB-ospf-1-area-0.0.0.0] network 10.1.1.0 0.0.0.255[SwitchB-ospf-1-area-0.0.0.0] quit[SwitchB-ospf-1] area 1[SwitchB–ospf-1-area-0.0.0.1] network 10.2.1.0 0.0.0.255[SwitchB–ospf-1-area-0.0.0.1] quit[SwitchB-ospf-1] quit# Configure Switch C. system-view
