> On Sep 20, 2016, at 2:34 AM, Warsang <wars...@minet.net> wrote: > > Hello everyone, I am simulating a fat tree topology with ECMP. When one of my > host sends an ARP request in broadcast, the packet is broadcasted through all > switches which creates more and more traffic because I have no STP. My > question is simple. What is the best way to get rid of these immortal > packets? I thought of using something similar to a TTL header which would be > decremented every time the packet hits a switch and dropped when it gets to > zero however this method seems a bit too complicated to implement and I was > wondering if there was a better, more simple way to do so using OVS?
I'm not sure what a TTL would look like in ARP, since it doesn't have such a field, and an L2 switch wouldn't normally decrement one even if there were. Do you have enough visibility into the topology to program OVS to only forward broadcasts in such a way that they won't form loops? I've seen some SDN applications do this to make better use of their links than can be achieved with STP. --Justin _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
