Ben, Thanks for your reply. So is there a possible indirect method to achieve it? In my case too the QoS need not do anything when there is no congestion, but I want to invoke them when there is congestion. I am able to get the network statistics, but am unable to proceed after that. It would be helpful if you could suggest something.
Thanks On Sat, May 14, 2016 at 11:51 AM, Ben Pfaff <b...@ovn.org> wrote: > On Fri, May 13, 2016 at 11:19:19PM -0700, Aravind Ganesan wrote: > > I have created QoS classes, and am able to separate the traffic based on > > source address. > > What I want to do now is enable QoS classes only when link is congested. > > For example, if there are 3 hosts, h1, h2, h3, connected by single switch > > s1. Suppose h1 is sending file to h3. Simultaneously h2 wants to send > file > > to h3. I measure the bandwidth of s1->h3. If it is less than say 100 > Mbps, > > I invoke QoS class and give priority to packets from h2. > > Is it possible to do this? > > OVS can't do that directly, but there's not much value in it anyway > because most QoS strategies don't do anything if the link is not > congested. >
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