We add two OSPFv3 areas and a single OSPFv3 router R4 to the single-area scenario presented in the last section, as shown in Figure 14-7. You have to perform additional configuration on FasEthernet0/0 and FastEthernet0/1 of R1. You also have to configure R4 from scratch assigning OSPF areas to interfaces as shown in Figure 13-7. We will configure FastEthernet0/0 of R4 as passive as there are not any OSPFv3 neighbors off this interface. //////////////////
R1 Configuration: