! version 12.3 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R3 ! boot-start-marker boot-end-marker ! enable secret 5 $1$OwuI$bTQP78KbnFGWuHpLu0Co8. ! no aaa new-model ip subnet-zero ! no ip domain lookup ! ip cef ipv6 unicast-routing ! interface Loopback0 no ip address ipv6 address 2001:DB8:0:172::3/128 ! interface FastEthernet0/0 no ip address shutdown duplex half ! interface Serial1/0 no ip address shutdown serial restart-delay 0 ! interface Serial1/1 description to R2 s1/1 no ip address ipv6 address 2001:DB8:0:2::2/64 serial restart-delay 0 ! interface Serial1/2 no ip address shutdown serial restart-delay 0 ! interface Serial1/3 no ip address shutdown serial restart-delay 0 ! interface Serial1/4 no ip address shutdown serial restart-delay 0 ! interface Serial1/5 no ip address shutdown serial restart-delay 0 ! interface Serial1/6 no ip address shutdown serial restart-delay 0 ! interface Serial1/7 no ip address shutdown serial restart-delay 0 ! ip classless no ip http server no ip http secure-server ! gatekeeper shutdown ! line con 0 exec-timeout 0 0 logging synchronous stopbits 1 line aux 0 stopbits 1 line vty 0 4 password network login ! end