for cisco

10.1.2.10 PC3 10.0.1.10 PC1 SW3 SW1 FE0/1 10.1.2.1/24 FE0/1 10.0.1.1/24 10.1.1.0/24 R3 R2 R1 .1 .2 10.1.0.0/24 .1 .2 FE0/1 FE0/1 R4 FEO/O FEO/O FE1/0 10.1.3.1/24 10.0.0.0/24 .1 .2 FE0/0 FEO/0 FE1/1 10.0.3.1/24 FE1/1 203.0.113.1/24 FE1/0 10.0.2.1/24 SW4 SW2 R5 203.0.113.2/24 FEO/O 10.1.3.2/24 FEO/1 10.0.3.2/24 Internet PC2 10.0.2.10 4. Verify the loopback interfaces are in the routing table on R3 5. Verify connectivity from PC1 to the loopback interface on R4 6. Configure the loopback interface and link to R4 as a passive-interfaces on R3. 7. Verify you configuration in part (6)