ARP – Why do we need it? In any environment, be it the physical data-center, your home, or a virtualization cloud, machines need to know the MAC, or physical network address, of the next hop. For example, let there be two machines connected directly…
Why do we need it, whatever it is? VM unicast, multicast and broadcast traffic flow is detailed in my previous post: Tunnels in Openstack Neutron TL;DR: Agent OVS flow tables implement learning. That is, any unknown unicast destination (IE: MAC addre…