Peter Nase <pet.nase@...> writes: > > Hello all, > > i have a basic question about queue(s) in ovs. > > As a example my Mininet-Network consists of one switch (s1) and three > hosts (h1, h2, h3). > The links between the hosts and the switch are configured as 10000 Mbps > and communication works fine. I started iperf in server mode on h3 and > use h1, h2 as clients at the same time. Both clients send with full > speed (2x times 10000 Mbps) to h3, but the link of h3 can only process > 10000 Mbps. > > For my understandig there must exist a queue that fills, because host 3 > can handle only 10000 Mbps. Am i'm right? > > Where is this queue exactly located? > Is there one (default) queue in the switch which holds all packets to be > forwarded or is there one queue per port? > How can i get the stats of such a queue to see if it gets filled up and > see if packets are dropped because the queue is full? > > I read about QoS-Queues which i can configure per port, but what about > if i do not do this. What is the default behaviour if my two hosts h1, > h2, overloads the link of h3? > > If my understanding is wrong, please correct me. > Thanks for clarifying my questions. > Greetings >
Hello Peter, Did you limit the bandwidth via tclink? If so, you probably got involved in the bug of the mininet. This bug has been issued here https://github.com/mininet/mininet/issues/91. You can solve it by using kernel mode switch, i.e. --switch=ovsk. Regards, Chien Hsin _______________________________________________ discuss mailing list [email protected] http://openvswitch.org/mailman/listinfo/discuss
