Using GRE tunneling to connect Mininet networks on different virtual machines

1.IP description

VM1 192.168.2.2

VM2 192.168.2.3

2. Start the POX controller on the VM1

CD pox

./pox.py forwarding.l2_learning

3. Start the mininet on VM1, use the simplest topology, connect to the Pox controller

sudo mn--controller=remote,ip=192.168.2.2

4. Start the mininet on vm2, use the simplest topology, connect to the Pox controller

sudo mn--controller=remote,ip=192.168.2.2

5. Modify the IP of H1, H2 on VM2

Mininet> xterm H1 H2

Terminal Input in H1

Ifconfig H1-eth0 inet 10.0.0.3

Terminal input in H2

Ifconfig H2-eth0 inet 10.0.0.4

6. Test whether the host in VM1 month vm2 can ping through

Running in VM2

mininet> H1 PING-C1 10.0.0.1

7. Adding GRE Tunnels

Under root permissions in Vm1, enter

Ovs-vsctl add-port S1 GRE0--set interface gre0 Type=gre options:remote_ip=192.168.2.3

Under root permissions in VM2, enter

Ovs-vsctl add-port S1 Gre1--set interface Gre1 Type=gre options:remote_ip=192.168.2.2

8. Test again

Can ping through

Using GRE tunneling to connect Mininet networks on different virtual machines