Configuring Open vSwitch tunnels with VxLan

The following diagram represents two instances running on two separate hosts connected by a VxLan tunnel. Also illustrated are the required supporting physical and virtual components. VTEP interfaces allows us to create Layer 2 network over layer 2.

The example depicted earlier steps through the creation of a VXLaN tunnel between two OVS bridges running on two separate bare metal hosts named KVMhost1 and KVMhost2.

KvmHOST1 host side configuration

We have to first create a virtual tunnel endpoint and then connect it to the virtual tunnel endpoint created on a second host to form the tunnel. The following steps are involved in VTEP creation:

1. First verify to which OVS bridge the vm1 is connected:

   #virsh domiflist vm1
   Interface  Type     Source   Model     MAC
   -------------------------------------------------------
   vnet0    bridge   vswitch_vlans_portgroup rtl8139   52:54:00:b7:d1:3a
   

2. Check the configuration of the ovs switch:

    ovs-vsctl show
   6e121fc0-2f05...