configure terminal ! hostname Router_3 ! interface Loopback0 ip address 150.1.3.3 255.255.255.0 ! interface Serial0/0 ip address 152.1.136.3 255.255.255.0 encapsulation frame-relay no shut ! interface FastEthernet0/1 ip address 152.1.34.3 255.255.255.0 duplex auto speed auto no shut ! end ! write memory