Hi Viral, do you think the logic would depend on the application you have in mind? For example, on this class project I am doing for distributed ethernet monitoring, http://blog.pythonicneteng.com/, all I need is to specify a pair of incoming / outgoing port for a specific duration of time. I don't even need a 'controller', just a few dpctrl commands.
One thing that I think might help is to use a linear topology from Mininet's documentation, http://mininet.org/walkthrough/, such as: mininet@mininet-vm:~$ sudo mn --topo linear,3 --mac --switch ovsk --controller remote <skip> mininet> net c0 s1 lo: s1-eth1:h1-eth0 s1-eth2:s2-eth2 s2 lo: s2-eth1:h2-eth0 s2-eth2:s1-eth2 s2-eth3:s3-eth2 s3 lo: s3-eth1:h3-eth0 s3-eth2:s2-eth3 h1 h1-eth0:s1-eth1 h2 h2-eth0:s2-eth1 h3 h3-eth0:s3-eth1 mininet> Each switch has one host connection and one inter-switch connection. Then you can start playing with your multi-switch application. All the switch can register with the same controller and the controller would identify each switch via DPID. It is not different than having each switch has a topological view contracted via, say, spanning-tree or any routing protocol, except now it is in a centralize controller. :) Hope it helps, Eric On Apr 14, 2013, at 4:46 AM, viral parmar <viral_par...@outlook.com> wrote: > Hello, > I want to program the basic functionality of the controller. I found out many > articles on this , but none of them are unable to clear my concept. The > Article i saw up till now is having only 1 switch connected to 1 controller > instead i want to analyze the controller behavior with 2 or more switches > connected to 1 controller. > > What happens when a packet arrive a switch 1 and having the destination > address of a node that is connected to switch 2 ? So basically i am wanted to > know the basic functionality (basic logic), so that on the basis of that i > can prepared my own program. > > Thank you, > > Regards > Viral Parmar > _______________________________________________ > openflow-discuss mailing list > openflow-discuss@lists.stanford.edu > https://mailman.stanford.edu/mailman/listinfo/openflow-discuss
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