Do you have the OFPFF_SEND_FLOW_REM flag set on the flow entries that you
intend to receive Flow removed msg from?
Nitin Sharma
On Wed, May 7, 2014 at 5:50 AM, Ricardo Schmidt <[email protected]>wrote:
> Hi all,
>
> I'm trying some first steps with Ryu and a Pica8 openflow switch (running
> open vswitch). I run the testing application simple_switch_13.py that comes
> with Ryu package. I see packet_in msgs and I'm able to alter the timeouts
> of flow entries in the switch by simply changing values in the default code
> of simple_switch_13.py.
>
> On setting a very small timeout, such as 2s, I see packet_in msgs coming
> roughly every 2s, which means that it seems to be working fine.
>
> On the timeout expiration I expect to see a flow_removed msg from the
> switch to the controller. I added this to the simple_switch_13.py:
>
> @set_ev_cls(ofp_event.EventOFPFlowRemoved, MAIN_DISPATCHER)
> def flow_removed_handler(self, ev):
> self.logger.info("flow removed received")
>
> However, I never see a "flow removed received" in between two packet_in
> msgs, being the second of them due to the expiration of the previous flow
> entry.
>
> Any ideas of something basic that I'm missing here?
>
> Many thanks,
> Ricardo
>
>
>
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