Hello Murphy:
Thanks for your replying. Your advise is useful and I can get the information from switch disconnected now. BTW, I want to ask does the ''betta'' version of POX modify the dump information ways or am I missing some commands for POX starting? The command like below doesn't work in l2_learning.py file for betta version. log.debug("Connection %s" % (event.connection,)) And I see a lot of way through ''self.msg'' to dump information in of_01.py. Thanks for replying. Wayne. 2013/3/23 Murphy McCauley <murphy.mccau...@gmail.com> > On Mar 22, 2013, at 11:19 AM, Hong Wayne wrote: > > When OpenFlow Switch disconnect to POX because the network doesn't work > at the OpenFlow Switch side, it looks like POX will not trigger any event. > > > > POX will waiting for the next connection and still binding address > through the setting previously. > > > > Then I want to ask how do we verify the disconnection from OpenFlow > Switch in POX? > > Try adding openflow.keepalive to your commandline. > > (I've also just updated the wiki entry for this component to make this > more clear.) > > -- Murphy