On Jan 28, 2013, at 9:17 AM, Julius Bachnick wrote: > thank you so much for your support so far! My current issue (and I admit it's > a bit urgent ;)) is to listen to Changes in a Port Status of an OVS, for > example if a port goes down or is disconnected. > > According to the POX Wiki this can be achievend through using > openflow.discovery but I cannot find any example on how to use this.
Well, it depends what you mean by a port going down. If you mean a port being administratively downed, you can see this by listening for port events. But if you are looking for links which are dying/disappearing (e.g., cables cut), then you might want to use discovery. The forwarding.l2_multi component uses discovery. Basically you just listen to it and it will raise events when links are discovered/"undiscovered". -- Murphy
