Dear All, I was trying to implement GRE tunneling in OVS using mininet. I have two Ubuntu 16 VMs with mininet and OVS installed on them. I saw in some youtube video that we must enable adapter 2 as shown below in order to enable networking between different VMs.
When I start the VM before the mininet topology on them, there are already two ethernet ports shown in ifconfig. I tried to ping google.com and identified which ethernet port is the NAT port and thus identified the other eth port that is used in networking for connecting the VMs. Then I set the IP addresses of those eth ports as 192.168.56.101 & 192.168.56.103 in VM1 and VM2 respectively. Then I started mininet topology on both of them using sudo mn --mac. In VM 2, I set IP of H1 and H2 as 10.0.0.3 & 10.0.0.4 respectively. Then I added the following gre tunnel configuration in VM1 & VM2 respectively. ovs-vsctl add-port s1 s1-gre1 -- set interface s1-gre1 type=gre options:remote_ip=192.168.56.103 ovs-vsctl add-port s1 s1-gre1 -- set interface s1-gre1 type=gre options:remote_ip=192.168.56.101 After this I tried the h1 ping 10.0.0.3 and the ping failed. I do not know what is wrong in this set up. If you have implemented this please help me. Also if you can identify the mistake in my setup, it would be helpful. Best Regards, Ashish Kurian Best Regards, Ashish Kurian
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