Floating Static and GRE-tunnel

R1(config)#int tunnel 1

R1(config-if)#ip add 192.168.1.1 255.255.255.0

R1(config-if)#tunnel source fa0/0

R1(config-if)#tunnel destination 10.1.34.4

R1(config-if)#end

R4(config)#int tunnel 1

R4(config-if)#ip add 192.168.1.2 255.255.255.0

R4(config-if)#tunnel source fa0/0

R4(config-if)#tunnel destination 10.1.12.1 

R4(config-if)#end

R1#sho ip int bri

Interface                  IP-Address      OK? Method Status                Protocol

FastEthernet0/0            10.1.12.1       YES manual up                    up     

Loopback0                  1.1.1.1         YES manual up                    up     

Loopback1                  11.11.11.11     YES manual up                    up     

Tunnel1                    192.168.1.1     YES manual up                    up 

R2#sho ip int bri

Interface                  IP-Address      OK? Method Status                Protocol

FastEthernet0/0            10.1.12.2       YES manual up                    up     

FastEthernet1/0            10.1.23.2       YES manual up                    up     

Serial2/0                  10.1.32.2       YES manual up                    up  

R3#sho ip int bri

Interface                  IP-Address      OK? Method Status                Protocol

FastEthernet0/0            10.1.23.3       YES manual up                    up     

FastEthernet1/0            10.1.34.3       YES manual up                    up     

Serial2/0                  10.1.32.3       YES manual up                    up  

R4#sh ip int bri

Interface                  IP-Address      OK? Method Status                Protocol

FastEthernet0/0            10.1.34.4       YES manual up                    up     

Loopback0                  4.4.4.4         YES manual up                    up     

Loopback1                  44.44.44.44     YES manual up                    up     

Tunnel1                    192.168.1.2     YES manual up                    up 

R1#sho run | s ip rout

ip route 4.4.4.0 255.255.255.0 10.1.12.2

ip route 10.1.23.0 255.255.255.0 10.1.12.2

ip route 10.1.32.0 255.255.255.0 10.1.12.2

ip route 10.1.34.0 255.255.255.0 10.1.12.2

ip route 44.44.44.0 255.255.255.0 192.168.1.2

R2#sho run | s ip route

ip route 1.1.1.0 255.255.255.0 10.1.12.1

ip route 4.4.4.0 255.255.255.0 10.1.32.3 50

ip route 4.4.4.0 255.255.255.0 10.1.23.3 100

ip route 10.1.34.0 255.255.255.0 10.1.32.3 100

R3#sh run | s ip route

ip route 1.1.1.0 255.255.255.0 10.1.32.2 50

ip route 1.1.1.0 255.255.255.0 10.1.23.2 100

ip route 4.4.4.0 255.255.255.0 10.1.34.4

ip route 10.1.12.0 255.255.255.0 10.1.32.2 50

ip route 10.1.12.0 255.255.255.0 10.1.23.2 100

R4#sh run | s ip route

ip route 1.1.1.0 255.255.255.0 10.1.34.3

ip route 10.1.12.0 255.255.255.0 10.1.34.3

ip route 10.1.23.0 255.255.255.0 10.1.34.3

ip route 10.1.32.0 255.255.255.0 10.1.34.3

ip route 11.11.11.0 255.255.255.0 192.168.1.1

R1#ping 4.4.4.4

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 92/115/160 ms

R1#ping 44.44.44.44

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 44.44.44.44, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 124/128/132 ms