R1#show ip route

　　Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP

　　o - ODR, P - periodic downloaded static route

　　Gateway of last resort is 11.11.11.6 to network 0.0.0.0

　　1.0.0.0/24 is subnetted, 1 subnets

　　C       1.1.1.0 is directly connected, Loopback0

　　11.0.0.0/24 is subnetted, 1 subnets

　　C       11.11.11.0 is directly connected, Serial0/1

　　o*   0.0.0.0/0 [160/1] via 11.11.11.6, 00:00:27, Serial0/1

　　R1#

　　R2#show ip route

　　Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP

　　o - ODR, P - periodic downloaded static route

　　Gateway of last resort is 22.22.22.6 to network 0.0.0.0

　　2.0.0.0/24 is subnetted, 1 subnets

　　C       2.2.2.0 is directly connected, Loopback0

　　22.0.0.0/24 is subnetted, 1 subnets

　　C       22.22.22.0 is directly connected, Serial0/2

　　o*   0.0.0.0/0 [160/1] via 22.22.22.6, 00:00:13, Serial0/2

　　R2#

　　R3#show ip route

　　Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP

　　o - ODR, P - periodic downloaded static route

　　Gateway of last resort is 33.33.33.6 to network 0.0.0.0

　　33.0.0.0/24 is subnetted, 1 subnets

　　C       33.33.33.0 is directly connected, Serial0/3

　　3.0.0.0/24 is subnetted, 1 subnets

　　C       3.3.3.0 is directly connected, Loopback0

　　o*   0.0.0.0/0 [160/1] via 33.33.33.6, 00:00:36, Serial0/3