E#sh ip rout
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route

Gateway of last resort is not set

R    192.168.4.0/24 [120/1] via 192.168.1.1, 00:00:07, Serial1
R    192.168.5.0/24 [120/1] via 192.168.1.1, 00:00:07, Serial1
                    [120/1] via 192.168.2.1, 00:00:23, Serial0
C    192.168.1.0/24 is directly connected, Serial1
C    192.168.2.0/24 is directly connected, Serial0
R    192.168.3.0/24 [120/1] via 192.168.2.1, 00:00:24, Serial0