在R1上的配置
[R1]ipv6
[R1]interface Tunnel 0/0/0
[R1-Tunnel0/0/0]tunnel-protocol ipv6-ipv4
[R1-Tunnel0/0/0]source 12.1.1.1
[R1-Tunnel0/0/0]destination 12.1.2.1
[R1-Tunnel0/0/0]ipv6 enable
[R1-Tunnel0/0/0]ipv6 address 2001:2::1 64
[R1-Tunnel0/0/0]quit
[R1]ipv6 route-static 2001:3:: 64 2001:2::2
在R3上的配置
[R3]ipv6
[R3]interface Tunnel 0/0/0
[R3-Tunnel0/0/0]tunnel-protocol ipv6-ipv4
[R3-Tunnel0/0/0]source 12.1.2.1
[R3-Tunnel0/0/0]destination 12.1.1.1
[R3-Tunnel0/0/0]ipv6 enable
[R3-Tunnel0/0/0]ipv6 address 2001:2::2 64
[R3-Tunnel0/0/0]quit
[R3]ipv6 route-static 2001:1:: 64 2001:2::1
相关视频教程
http://edu.51cto.com/course/11268.html