Hi Xiao, Thank you for your quick response. That means there are several ways to insert OF flows! Then, if I insert OF rules by using ovs-ofctl and by a controller, is there any way to ensure installed rules are not overlap or interfere with the others? Or is there any way to only allow one way to communicate with the switch?
Best regards, Minh. 2015-09-15 18:43 GMT+09:00 Xiao Liang (xiaolia) <[email protected]>: > Hi Minh, > > > > As far as I know, most controllers will include OpenFlow protocol > implementation. They communicate with switches by OpenFlow message. In this > way, ovs-ofctl makes no difference, it sends / receives messages via > sockets (unix, tcp, etc.). Some controller might also have OVSDB > southbound, which manipulates OVS bridges as ovs-vsctl. > > Some applications (like Openstack, IIRC) might have an agent running on > the host to call OVS utils. > > > > Thanks, > > Xiao > > > > *From:* discuss [mailto:[email protected]] *On Behalf Of *Minh > Nghiem Gia > *Sent:* Tuesday, September 15, 2015 16:43 > *To:* [email protected] > *Subject:* [ovs-discuss] way to speak with OpenFlow module > > > > Hello, > > > > It is easy to push OpenFlow rules to OVS by using the OVS utility such > as ovs-ofctl. Thanks all OVS developers! > > However, I now want to try that function with a SDN controller and I > wonder that does the SDN controller (i.e., pox, nox or floodlight) will > call ovs-ofctl to install OF flows or they implement their own way (which > probably works in a similar way to ovs-ofctl) to complete that tasks? > > Anyone please help on my dummy question. > > > > Thanks a lot, > > Minh. >
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