Creating an IPv6 in IPv4 tunnel for traversing a public network

This example creates an IPv6 in IPv4 tunnel between two switches, enabling traffic from two networks to traverse a public network.

Procedure
  1. 在开关1:
    1. Enable interface1/1/1and assign the IP address10.1.1.1/24to it. 
      switch#configswitch(config)#interface 1/1/1switch(config-if)#ip address 10.1.1.1/24switch(config-if)#no shutdown
    2. Enable interface1/1/2and assign the IP address2080::2/64to it. 
      switch#configswitch(config)#interface 1/1/2switch(config-if)#ipv6地址2080::2/64switch(config-if)#no shutdownswitch(config-if)#exit
    3. Create IPv6 in IPv4 tunnel10and assign the IP address2001:DB8::1/32, source address10.1.1.1, and destination address20.1.1.1to it. 
      switch(config)#interface tunnel 10 mode ip 6in4switch(config-ip-if)#ipv6 address 2001:DB8::1/62switch(config-ip-if)#source ip 10.1.1.1switch(config-ip-if)#destination ip 20.1.1.1switch(config-ip-if)#no shutdownswitch(config-ip-if)#exit
    4. 定义了路线s so that traffic from network 1 can reach network 2 through the tunnel. 
      switch(config)#ip route 20.1.1.0/24 10.1.1.2switch(config)#ipv6 route 290::0/64 tunnel10
  2. On switch 2:
    1. Enable interface1/1/1and assign the IP address20.1.1.1/24to it. 
      switch#configswitch(config)#interface 1/1/1switch(config-if)#ip address 20.1.1.1/24switch(config-if)#no shutdown
    2. Enable interface1/1/2and assign the IP address2090::2/64to it. 
      switch(config)#interface 1/1/2switch(config-if)#ipv6 address2090::2/64switch(config-if)#no shutdownswitch(config-if)#exit
    3. Create IPv6 in IPv4 tunnel10and assign the IP address2001:DB8::2/32, source address10.1.1.1, and destination address20.1.1.1to it. 
      switch(config)#interface tunnel 10 mode ip 6in4switch(config-ip-if)#ipv6 address 2001:DB8::2/62switch(config-ip-if)#source ip 20.1.1.1switch(config-ip-if)#destination ip 10.1.1.1switch(config-ip-if)#no shutdownswitch(config-ip-if)#exit
    4. 定义了路线s so that traffic from network 2 can reach network 1 through the tunnel. 
      switch(config)#ip route 10.1.1.0/24 20.1.1.2switch(config)#ip route 2080::0/64 tunnel10