2016-04-12 4:29 GMT+03:00 Ben Pfaff <b...@ovn.org>: >> In some usecases such as VM migration or when VMs reuse IP addresses, >> VMs become unreachable externally because >> external switches/routers on localnet >> have stale port-mac or arp caches. The problem resolves >> after some time when the caches ageout which could be >> minutes for port-mac bindings or hours for arp caches. >> >> To fix this, send some gratuitous ARPs when a logical >> port on a localnet datapath gets added. Such gratuitous arps >> help on a best-effort basis to update the mac-port bindings and arp-caches >> of external switches and routers on the localnet.
Why send garp and not to create two flows that duplicates all traffic to source and destination vm? So in this case we don't need garp at all. -- Vasiliy Tolstov, e-mail: v.tols...@selfip.ru _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
