[ovs-discuss] Issue: ovs send many packets of a table miss flow to controller

[Ben Pfaff]

OVS sends a packet to the controller if the flow table tells it to do
so.  There's nothing in OpenFlow that restricts this on the basis of a
flow or a response from the controller.

n_buffers is not adjustable.

On Thu, Mar 16, 2017 at 10:22:38PM +0800, Big Strong wrote:
> @Ben, does it mean ovs would repeatedly send packet in messages as long as
> no response is got from controller? What will happen when a same packet
> comes to ovs while the old packet in message is still not handled?
> 
> Another question, is the n_buffers size adjustable using
> ovs-ofctl/ovs-vsctl command? I want a larger n_buffers rather than the
> default 256.
> 
> Regards.
> 
> 2017-03-16 4:54 GMT+08:00 Ben Pfaff <blp at ovn.org>:
> 
> > On Wed, Mar 15, 2017 at 01:34:56PM +0800, yiyefuping198425 wrote:
> > > I'm asking for assistance to fix this issue: ovs send many packets of a
> > table miss flow instead of the first packet.
> >
> > That's how OpenFlow works.
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> >