On Sat, Mar 16, 2013 at 12:06:30AM -0500, Steve wrote: > Here's the issue. I want to communicate between virtual machines, second Ethernet virtual port. But I would like to use the host loopback for that so as to not be limited to Ethernet port speeds, for large copies, etc. Right now, the machine is connected to a 10mbps switch on port 2 and would like to get far faster transfer speeds when using the so called private LAN. Bridging eth1 merely limits the speed to 10 Mbps. If it was bridged to the host loopback, I was hoping it could achieve far faster speeds and also not saturate the switch. > > So, could I make a br1 that is assigned to 127.0.0.1 and then each host can use that as eth1?-- Guest<->guest communication is not affected by physical NIC link speed. A software bridge with the guest tap interfaces and the host's physical interface should allow guests to communicate >10 Mbps. Have you measured the speed of guest<->guest networking and found it is <10 Mbps? If you still experience poor performance, please post your QEMU command-line, ifconfig -a (on host), and brctl show (on host) output. Stefan -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
