还是ipv6 ccnp中的一个实验，简单介绍，拓扑图同上个差不多。

两个loop0都是ipv6地址，两个以太口都是ipv4，通过tunnel双栈联通。

一、配置

r2#sh run

ipv6 unicast-routing
!        
!
interface Loopback0
no ip address
ipv6 address 2001:4EEE::2/128
ipv6 rip loneblog enable
!
interface Tunnel0
no ip address
ipv6 unnumbered Loopback0
ipv6 rip loneblog enable
tunnel source 192.168.1.2
tunnel destination 192.168.1.1
!
!直接使用loop0的ip地址，也可以随意写
!启用ripng不同端口可以通信
!
interface Ethernet0/0
ip address 192.168.1.2 255.255.255.0
half-duplex
ipv6 rip loneblog enable
!
ipv6 router rip loneblog

r1#sh run

ipv6 unicast-routing
!        
!
interface Loopback0
no ip address
ipv6 address 2001:3EEE::1/128
ipv6 rip loneblog enable
!
interface Tunnel0
no ip address
ipv6 unnumbered Loopback0
ipv6 rip loneblog enable
tunnel source 192.168.1.1
tunnel destination 192.168.1.2
!
interface Ethernet0/0
ip address 192.168.1.1 255.255.255.0
half-duplex
ipv6 rip loneblog enable
!
ipv6 router rip loneblog

二、验证

r2#p 2001:3eee::1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:3EEE::1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/48/96 ms

r1#p 2001:4EEE::2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:4EEE::2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/52/148 ms

原来不用加ipv6也可以直接ping v6的地址