GRE Tunnel in OVS

Quick command references to set up GRE tunnel with OVS 


/*Add a bridge br0*/
sudo ovs-vsctl add-br br0

/*Add a temp internal interface to connect to guest VM*/
sudo ovs-vsctl add-port br0 tep0 -- set interface tep0 type=internal



/*set new subnet IP for guest to reach other end of GRE tun*/
sudo ifconfig tep0 192.168.200.20 netmask 255.255.255.0


/*create a GRE(Genric Encapsulation) tunnel interface */
sudo ovs-vsctl add-port br2 gre0 -- set interface gre0 type=gre options:remote_ip=<GRE tunnel endpoint on other hypervisor>

#sudo ovs-vsctl show
3fb59768-6943-496f-8963-2cd2e2935075
    Bridge "br0"
        Port "br0"
            Interface "br0"
                type: internal
        Port "tep0"
            Interface "tep0"
                type: internal
    ovs_version: "2.0.2"