|  | 4.4 | Basic Networking Testing
| 4.4.5 | Testing network layer with the show ip route command
The router offers some powerful tools at this point in the search. You can actually look at the routing table - the directions that the router uses to determine how it will direct traffic across the network. The next basic test also focuses on the network layer. Use the show ip route command to determine whether a routing table entry exists for the target network. The highlight in the graphic shows that Rome (131.108.33.0) is reachable by Paris (131.108.16.2) via the Enternet1 interface.