Have you tried to add openflow.keepalive as well as your modules? Some switches will assume that an idle control connection indicates a loss of connectivity to the controller and will disconnect after some period of silence.
Thanks. Weiyang 2013/3/7 Liyuan Wang <[email protected]> > Hi all, > > I encountered a sudden connection down, while I'm running an experiment > with a 15-hour long traffic. > It seems no reason to me. > I'm wondering if anyone here know anything about this. > I attached pox log down here. > At the first beginning it was working well and printing result for me, but > then a connection closed. > BTW, I collect data every 555 seconds. > [image: 内嵌图片 1] > > Thanks, > Liyuan >
