Switch1R1R2R3 P3,P2 on vlan 10 and PC W10 on vlan 20 can ping interface e0/0 (168.0.0.1) on R2 but cannot ping interface e0/0 (168.0.0.2) on R3. I configured OSPF protocol on all routers. I would like to connect vlan 10 to vlan 10 and vlan 20 to vla...