No.  I mean:
http://www.openflow.org/downloads/OpenFlowTutorial-101311.zip

.. which is the link provided on the OpenFlow tutorial page:
http://www.openflow.org/wk/index.php/OpenFlow_Tutorial

This VM comes with Mininet, but also comes with NOX pre-built and including the 
pytutorial component.

-- Murphy

On Nov 4, 2012, at 5:17 PM, Liyuan Wang wrote:

> Do you mean Mininet?
> I'm running everything in that VM.
> 
> 2012/11/4 Murphy McCauley <[email protected]>
> pytutorial isn't part of NOX.  It's a component written for the tutorial.  
> The tutorial is meant to be run using a VM image provided by the tutorial 
> which includes it.
> 
> -- Murphy
> 
> On Nov 4, 2012, at 5:06 PM, Liyuan Wang wrote:
> 
> > Hi all,
> >
> > When I ran $ ./nox_core -v -i ptcp: pytutorial under ~/nox/build/src
> > The error is that
> > Application 'pytutorial' description not found.
> >
> > Why????
> > The tutorial is driving me crazy today. T_T
> > Many unexpected errors.....
> >
> > Thanks,
> > Liyuan
> 
> 

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