Ccna 00-301, Volume Official

Example 16-9

  show ip route Command with Overlapping Routes

R1# show ip route 172.16.4.3

Routing entry for 172.16.0.0/16

  Known via "ospf 1", distance 110, metric 65, type intra area

  Last update from 10.2.2.5 on GigabitEthernet0/2/0, 14:22:06 ago

  Routing Descriptor Blocks:

  * 172.16.25.129, from 172.16.25.129, 14:22:05 ago, via GigabitEthernet0/1/0

      Route metric is 65, traffic share count is 1

Certainly, if you have an option, just using a command to check what the router actually 

chooses is a much quicker option than doing the subnetting math.