On Mon, Nov 18, 2013 at 4:54 PM, Nithin Nayak Sujir <nsu...@broadcom.com> wrote: > I'm following these instructions to setup a gre tunnel between two VMs on > two identical systems with Fedora 19. > http://networkstatic.net/open-vswitch-gre-tunnel-configuration/ > > With the fedora openvswitch module it works and I'm able to ping between VMs > (I had to unload ip_gre and gre modules before loading openvswitch). > However, if I compile and use the master branch, it doesn't work. The kernel > is 3.11.8-200.fc19.x86_64. > > > I have two identical systems with the latest openvswitch master branch > running. Each has physical interface p4p1. They're connected back-to-back. > > Switch setup on system 1 is below. The other system is exactly the same > except of course for remote_ip 173.16.50.100. > > Bridge "br2" > Port "br2" > Interface "br2" > type: internal > Port "tap0" > Interface "tap0" > Port "gre0" > Interface "gre0" > type: gre > options: {remote_ip="173.16.50.101"} > Bridge "br0" > Port "p4p1" > Interface "p4p1" > Port "br0" > Interface "br0" > type: internal > > > My VMs are connected to tap0 on each system. I have set ips 173.16.50.100 > and 173.16.50.101 on br0 of the systems and I can ping between them. > > However, I'm not able to ping vm-vm. Digging into this, I see it's because > ARP is not resolved. On the destination system, I see the GRE encapsulated > ARP packets being received at p4p1 and br0. But they don't get forwarded and > delivered via br2 - tap0 to the VM and therefore get no reply.
There shouldn't be any differences in requirements. Are you sure that the GRE module initialized correctly (look in dmesg for OVS-related errors) and there are no iptables rules? _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
