On Fri, Aug 30, 2013 at 03:50:36PM +0000, Dmitri Chebotarov wrote: > I'm looking for some help with an OVS option ? is there a way to > allow interface of connected VM to operate in promiscuous mode? > > VMWare vSwitch has this under Security, VirtualBox under > Network->[Adapter]->Advanced->Promiscuous mode.
VMware made a terrible, confusing mistake in naming here. "Promiscuous mode" has a specific meaning. As defined at e.g. http://en.wikipedia.org/wiki/Promiscuous_mode, promiscuous mode is when a network interface card passes every packet it receives to the CPU, instead of filtering out and discarding the packets not destined to that host. In a switched network, like the ones you'll find pretty much everywhere these days, promiscuous mode doesn't have much effect, because few packets not destined to a host are delivered to the host's NIC. What the VMware vSwitch calls "promiscuous mode" is quite different. When you configure promiscuous mode on a VMware vNIC, the vSwitch sends a copy of every packet received by the vSwitch to that vNIC. That has a much bigger effect: rather than getting a few stray packets for which the switch does not yet know the correct destination, the vNIC gets every packet. On a physical switch, what the VMware vSwitch calls "promiscuous mode" is called "port mirroring" or "SPAN". Open vSwitch supports port mirroring, and you can find instructions for configuring it in the documentation. _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
