R1#sh ip route

R1#sh ip route
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

C    192.168.1.0/24 is directly connected, Serial0/2/0
     192.168.10.0/24 is variably subnetted, 2 subnets, 2 masks
D       192.168.10.0/24 is a summary, 00:24:21, Null0
C       192.168.10.0/29 is directly connected, FastEthernet0/0
     192.168.11.0/24 is variably subnetted, 2 subnets, 2 masks
D       192.168.11.0/24 is a summary, 00:24:21, Null0
C       192.168.11.16/28 is directly connected, FastEthernet0/1
D    192.168.20.0/24 [90/2172416] via 192.168.1.254, 00:20:24, Serial0/2/0
D    192.168.21.0/24 [90/2172416] via 192.168.1.254, 00:20:24, Serial0/2/0
D    192.168.23.0/24 [90/2172416] via 192.168.88.2, 00:01:52, Serial0/2/1
D    192.168.24.0/24 [90/2172416] via 192.168.88.2, 00:01:52, Serial0/2/1
     192.168.88.0/24 is variably subnetted, 2 subnets, 2 masks
D       192.168.88.0/24 is a summary, 00:02:02, Null0
C       192.168.88.0/30 is directly connected, Serial0/2/1
D    192.168.99.0/24 [90/2681856] via 192.168.1.254, 00:20:00, Serial0/2/0
                     [90/2681856] via 192.168.88.2, 00:01:52, Serial0/2/1