网络拓扑：
R1:
ipv6 unicast-routing ===========开启ipv6
int f0/0
ip address 192.168.12.1 255.255.255.0
no shutdown
interface Loopback0
ipv6 address 2012:2012::1/64
ip route 192.168.23.0 255.255.255.0 192.168.12.2 ============配置静态路由
R2:
interface FastEthernet0/0
ip address 192.168.12.2 255.255.255.0
interface FastEthernet0/1
ip address 192.168.23.2 255.255.255.0
R3:
ipv6 unicast-routing ===============开启ipv6
interface FastEthernet0/1
ip address 192.168.23.3 255.255.255.0
interface Loopback0
ipv6 address 2014:2014::3/64
ip route 192.168.12.0 255.255.255.0 192.168.23.2 =============配置静态路由
测试：
R1#ping 192.168.23.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.23.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/56/76 ms
R1#
R3#ping 192.168.12.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.12.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/65/132 ms
R3#
配置tunnel隧道
R1：
ipv6 router ospf 1 ==========启用OSPFV3
router-id 1.1.1.1 ==========必须手动配置router-id
interface Tunnel1
no ip address
ipv6 address 2001::1/64
ipv6 ospf 1 area 0
tunnel source 192.168.12.1
tunnel destination 192.168.23.3
tunnel mode ipv6ip
!
interface Loopback0
ipv6 ospf 1 area 0
R3：
ipv6 router ospf 1
router-id 3.3.3.3
interface Tunnel1
no ip address
ipv6 address 2001::2/64
ipv6 ospf 1 area 0
tunnel source 192.168.23.3
tunnel destination 192.168.12.1
tunnel mode ipv6ip
!
interface Loopback0
ipv6 ospf 1 area 0
测试：
R1#ping 2014:2014::3 source 2012:2012::1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2014:2014::3, timeout is 2 seconds:
Packet sent with a source address of 2012:2012::1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/64/100 ms
R1#
R3#ping 2012:2012::1 source 2014:2014::3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2012:2012::1, timeout is 2 seconds:
Packet sent with a source address of 2014:2014::3
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/59/104 ms
R3#
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