Im using XEN 4.3.2-rc1 and the 'xl' toolstack. vif = ["ip=127.0.0.1,mac=00:00:00:00:00:00,bridge=br0,rate=100Mb/s"] --> Limits only outgoing bandwidth vif = ["ip=127.0.0.1,mac=00:00:00:00:00:00,bridge=br0,5Mb/s@25ms"] --> Did nothing. I've also tried 'tc' command but I could not get it reliable(connections stalled that barely used bandwidth) Here's my solution with 'tc' http://serverfault.com/questions/261021/xen-limit-incoming-traffic-speed I could not get it reliable. Connections got stalled. So what is a proper way to do it or is there one?