6 to 4 ( ipv4 over ipv6 tunneling )

R1 Configuration !!!!!

R1#
R1#configure terminal
R1(config)#interface ethernet 1/0
R1(config-if)#ip address 10.0.1.1 255.255.255.252
R1(config-if)#no shut
R1(config-if)#do write me
R1(config-if)#exit

BGP Basic

Router R1 Configuration !!!!!

R1>enable
R1#configure terminal
R1(config)#interface serial 1/0
R1(config-if)#ip address 200.200.200.1 255.255.255.252
R1(config-if)#no shut down
R1(config-if)#encapsulation ?
R1(config-if)#encapsulation ppp
R1(config-if)#do write me
R1(config-if)#exit