R1# sh run Building configuration... Current configuration : 1356 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R1 ! boot-start-marker boot-end-marker ! no logging console enable password cisco ! no aaa new-model ! resource policy ! memory-size iomem 10 ip cef ! ! ! ! no ip domain lookup ! voice-card 0 no dspfarm ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address 120.100.1.1 255.255.255.0 ! interface GigabitEthernet0/0 no ip address shutdown duplex auto speed auto media-type rj45 negotiation auto ! interface GigabitEthernet0/1 ...No credit card required