On Tue, Mar 12, 2013 at 11:13:30AM +0800, sparveriu...@gmail.com wrote: > On 3/12/2013 1:57 AM, Ben Pfaff wrote: > Thanks for the reply, my scenario looks like this. > > [1] Use "ovs-vsctl" to set OVS fail-mode to secure mode. > > [2] Controller A connects to OVS. > > [3] Controller B connects to OVS. > > [4] Controller A sends a OFP_FLOW_MOD packet to OVS to insert a flow > entry on the flow table, also verified with "ovs-ofctl dump-flows". > e.g. ( cookie=0x0, duration=1.169s, table=0, n_packets=0, n_bytes=0, > in_port=1 actions=output:2 ) > > [5] Controller A disconnects from OVS. The flow entry still remains on > the flow table. > > [6] Controller A connects again to OVS. This time all the flow entries > are cleared from the flow table. The same scenario also occurs when > disconnecting and reconnecting Controller B instead. (For reference, > both controllers are POX)
Open vSwitch doesn't clear the flow table on controller connection or disconnection. Perhaps one of the controllers is clearing it. If you are using a new enough version of Open vSwitch, you can use "ovs-ofctl monitor <switch> watch:" to observe changes in the flow table, which might help to see what's going on. _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
