! hostname Router_A ! interface FastEthernet0/0 ip address 172.16.1.1 255.255.255.0 duplex auto speed auto ! interface Serial0/0/0 bandwidth 64 ip address 172.16.2.1 255.255.255.0 clock rate 64000 ! ip classless ip route 172.16.3.0 255.255.255.0 172.16.2.2 ip route 172.16.4.0 255.255.255.0 172.16.2.2 !
! hostname Router_B ! interface Serial0/0/0 bandwidth 64 ip address 172.16.2.2 255.255.255.0 ! interface Serial0/0/1 bandwidth 64 ip address 172.16.3.1 255.255.255.0 clock rate 64000 ! ip classless ip route 172.16.1.0 255.255.255.0 172.16.2.1 ip route 172.16.4.0 255.255.255.0 172.16.3.2 !
! hostname Router_C ! interface FastEthernet0/0 ip address 172.16.4.1 255.255.255.0 duplex auto speed auto ! interface Serial0/0/0 bandwidth 64 ip address 172.16.3.2 255.255.255.0 ! ip classless ip route 172.16.1.0 255.255.255.0 172.16.3.1 ip route 172.16.2.0 255.255.255.0 172.16.3.1 !