Yes.  Use 0xffff as the second parameter to set_action_output().

-- Murphy

On Oct 17, 2011, at 7:14 AM, andrea simeoni wrote:

> You are right Murphy,
> 
> in the case of simplerouting, I receive error messages by all switches along 
> the path except for the first (as it is the only having a non empty buffer-id 
> for that packet). I didn't know that those OF errors could be ignored.
> 
> I solved also the question for the send_openflow_packet() instruction. Since 
> the reason of my packet-in events is "explicitely send to controller", then 
> packets are never buffered in switches.
> 
> However I've a little question more: When I configure the action 
> OFPP_CONTROLLER using ofp_action, is there a way to tell the switch to send 
> the whole packet to the controller, using the 
> ofp_action::set_action_output()? 
> 
> Thank you very much
> 
> 2011/10/17 Murphy McCauley <jam...@nau.edu>
> Assuming you're installing a route along multiple switches, all of them 
> except maybe one should probably have an empty (0xffffffff) buffer_id.  This 
> doesn't seem like it should be the problem.
> 
> I can't even hazard a guess without knowing more about the situation.
> 
> What version of NOX are you running?
> What kind of switch?
> What does the NOX log show?
> Can you provide a capture of the OpenFlow traffic between a switch that sends 
> an error and the controller?
> 
> -- Murphy
> 
> On Oct 17, 2011, at 6:33 AM, andrea simeoni wrote:
> 
> > Hi guys,
> >
> > I'm trying to run the simplerouting component, and found that when 
> > installing the route it receives "Malformed packet error" messages back 
> > from the switches.
> > The same happens when calling send_openflow_packet(..).  If i go in 
> > wireshark to analyse the controller->switches openflow packets, I find that 
> > the field buffer-id has "None" value in both cases.
> >
> > Any suggestions? How can I make things working properly?
> >
> > --
> > Andrea Simeoni
> > _______________________________________________
> > nox-dev mailing list
> > nox-dev@noxrepo.org
> > http://noxrepo.org/mailman/listinfo/nox-dev
> 
> 
> 
> 
> -- 
> Andrea Simeoni

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