Hello all, I just want to ask two questions regarding Openflow. I am following this tutorial<http://www.openflowswitch.org/foswiki/bin/view/OpenFlow/Deployment/HOWTO/LabSetup> to setup the Openflow test bed. I just want to ask one question in this tutorial I have to create a "of0" interface during setting up the testbed. And then I created the datapath n1:0 and add interface eth1 to it. Before adding the interface I have assigned the IP address to eth1 (10.0.0.156/24suppose). And when I tried to ping that interface from host1 that is attached to that interface, I got reply 'Network unreachable' from the openflow switch. But when I assign the ip address (ip address of the eth1 ( 10.0.0.156/24) ) to interface "of0" I got echo reply from the openflow switch and flows are populated in the flow table.
Question? What is puropose of the 'of0' interface ? Do we have to create as many data paths as many interfaces we have on the open flow switch? And we dont have to assign the IP addresses on the actual interfaces (eth1,eth2 etc) rather we have to assign the IP addresses on the (of1,of2,.. etc.) and add that interface on the created data path? Do we have to add that interface in the data path also that is connected with another openflow switch ? Best Regards, Waqas Daar
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