I'm pretty sure that the last time I checked, Mininet only had partial support 
for multiple controllers. You might try asking on the mininet-discuss mailing 
list (or maybe someone else will jump in here).

-- Murphy

On Jun 1, 2012, at 4:19 AM, Anthony Salim wrote:

> Hi Murphy,
> 
> Yes i am using open vswitch and not physical switches.
> 
> I just realised that if i run the topology from the examples folder in 
> mininet, it will not add switch ports to the created switches, whereas if i 
> run using the custom topology or sudo mn (any topology) it will add the ports 
> number to the switches. 
> 
> What i am trying to create is a topology with multiple switches with the 
> switch ports so whenever a flow comes in , i can go to that particular switch 
> and see the flow table. 
> 
> Now i have created the custom topology however it only runs one controller. 
> Any way i can do two controllers like multiple controllers in mininet 
> examples? i tried to call the class controller and add one more controller 
> but it says could not find the object controller. What do i miss here? Thanks.
> 
> Regards,
> Anthony
> 
> On Fri, Jun 1, 2012 at 10:19 AM, Murphy McCauley <[email protected]> 
> wrote:
> On May 30, 2012, at 11:32 PM, Anthony Salim wrote:
>> Thanks for the command however it shows port 0,1,2 and 3 and when i type 
>> dpctl show tcp:127.0.0.1:0 or 1 or 2 or 3 it says connection refused. Any 
>> idea why? Thanks.
> 
> I think we may be miscommunicating here.  Are you talking about TCP ports or 
> switch ports (like ethernet ports)?
> 
> More to the point: what is it that you're trying to accomplish?
> 
> Lastly, which switch are you using with Mininet?  Open vSwitch?  The 
> reference switch?
> 
> -- Murphy
> 

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