On Thu, Jul 7, 2011 at 11:44 PM, Ben Pfaff <[email protected]> wrote: > On Thu, Jul 07, 2011 at 06:36:32PM +0900, Tamura, Yoshiaki wrote: > > I've been playing around with OVS 1.1 and have a question regarding > > emergency mode specified in OpenFlow 1.0. > > OVS doesn't support that mode. >
Well, the problem that Yoshi is reporting is that OVS kind of supports an emergency mode (which should be supported per OpenFlow 1.0.0), in that it drops all normal flows when the controller is disconnected, but only in "standalone" mode, and not in "secure" mode. Why that difference in behavior between the "standalone" and "secure" modes? Since OVS doesn't support flows with the EMERG flag set, there is no way to configure an OVS switch to drop all traffic when the controller is disconnected. Could you please give us a hint on how to achieve that with the current OVS? Currently, the only solution we found is patching OVS to remove the "&& mgr->fail_mode == OFPROTO_FAIL_STANDALONE" in the test in connmgr.c. What you accept such a patch? Regards, -- Romain Lenglet
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