The section "Communicating with a Datapath (Switch)" in the manual may be useful to you.
-- Murphy On Feb 22, 2014, at 11:33 PM, Rizwan Jamil <u_r_wel...@hotmail.com> wrote: > Dear All ! > > > My question is regarding the controller: that how can I access the parameters > of other switches of a network FROM WITHIN the event handler of one of the > switches of that same network? > > > For example, I require to delete all flows in all switches in a network > whenever any port of any one of the switches goes down. So I think I would > have to access the flow tables of other switches from within the event > handler (Ports Status) of the switch which has triggered the removal/deletion > of one of its ports. But is it possible to do? How? > > > Another example is that, in a ring-protected network, I want to install the > flow in a switch for the shorter of the two paths with the help of an > algorithm. But while handling the packet_in event and before installing the > flow for the shorter path, I also require to make a check that whether or not > the ports of all switches upto the destination switch are up. If up, then > install that flow (for the shorter path), otherwise install the flow for the > other i.e. longer path. So it is possible to read the ports states of other > switches from within the packet_in handler of one of the switches which is > asking for a flow to the destination? > > > Please help!
