[ovs-discuss] Configuring in-band control

[Pedro Maia]

No, in mininet by default each switch is “directly” connected to the controller.
You configure a ip address at each switch in a interface that is also used to forward traffic, this way it will always have the “in-band behaviour”.
When you do this openvswitch will create a few hidden flows with a higher priority that the controller can configure which you will able to see executing “ovs-appctl bridge/dump-flows s1”.

Regards,
Pedro

> On 17 Dec 2015, at 13:26, André Mantas <andremantas7 at gmail.com> wrote:
> 
> Hi.
> 
> I thought in-band was default in mininet topologies?
> 
> Anyway, sometimes OvS processes control messages using ingress tables <http://openvswitch.org/pipermail/discuss/2015-December/019580.html> in "in-band" environments, and it can be configured to always have this behavior <http://openvswitch.org/pipermail/discuss/2015-December/019582.html>. I wanted to know how to make this configuration.
> 
> Thanks for your help.
> 
> Pedro Maia <pmaia at lasige.di.fc.ul.pt <mailto:pmaia at lasige.di.fc.ul.pt>> escreveu no dia quinta, 17/12/2015 às 10:51:
> Hi Andre,
> 
> An in-band controller just means that it sits in the “middle” of the network connected to a given switch. This way when some switch sends a packet in it uses the link it normally uses to forward traffic.
> If you want to emulate it using mininet there are a few examples just look for "in-band controller mininet”, for example http://techandtrains.com/2013/10/04/in-band-controller-with-mininet/ <http://techandtrains.com/2013/10/04/in-band-controller-with-mininet/> . The important thing is to give each switch a ip address and then run the controller in a mininet host.
> 
> Regards,
> Pedro
> > On 17 Dec 2015, at 10:23, André Mantas <andremantas7 at gmail.com <mailto:andremantas7 at gmail.com>> wrote:
> >
> > Hi all.
> >
> > I want to configure in-band control so that specific controller-switch messages (i.e., barrier reply, bundle commit reply) are processed by the ingress tables instead of being forwarded through the switch's controller port.
> >
> > Is there any documentation on how to configure in-band control?
> >
> > Thanks in advance.
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> 

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