Question

Users on the networks connected to the R1 router report that they are unable to contact computers connected to the R3 router. Troubleshoot and correct the problem.

Answer 1

On R3, run OSPF for area 0 on Fa0/0

On R3, run OSPF for area 0 on Fa0/1

Then,

On R3, run OSPF for area 0 on serial0/1/0.

Step-by-step explanation:

Open Shortest Path First (OSPF) is a routing protocol for Internet Protocol (IP) networks. You then use a link state routing (LSR) algorithm and falls into the group of interior gateway protocols (IGPs), operating within a single autonomous system (AS).