<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div>I think you're probably using l2_learning, which installs exact match table entries. In OpenFlow, exact matches always have maximum priority -- you can't override it.</div><div><br></div><div>Here are some options for getting around the problem:</div><div>1. Make the "exceptional" table entries you install *also* be at maximum priority, overriding the ones that l2_learning installed.</div><div>2. If you're using Open vSwitch, use the multiple table extension. Put your exceptional entries in table 0 and have l2_learning install into table 1. Have a lowest-priority match-all entry in table 0 just submit to table 1.</div><div>3. Don't install exact matches to begin with; do something more like l2_pairs.</div><div><br></div><div>Good luck.</div><div><br></div><div>-- Murphy</div><div><br><div><div>On May 16, 2015, at 9:00 AM, Kostas Chartsias <<a href="mailto:kchartsias@yahoo.gr">kchartsias@yahoo.gr</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="background-color: rgb(255, 255, 255); font-family: 'times new roman', 'new york', times, serif; font-size: 16px;"><div style="" class="" dir="ltr" id="yiv1946143110yui_3_16_0_1_1431786202651_4651">another question and thanks for the support,Murphy you rule !!!</div><div style="" class="" id="yiv1946143110yui_3_16_0_1_1431786202651_4754" dir="ltr"><br style="" class=""></div><div style="" class="" id="yiv1946143110yui_3_16_0_1_1431786202651_4770" dir="ltr">I modify the L2_switch and i install flow rules after an event accurs.Everything works fine,but there is a problem.</div><div style="" class="" id="yiv1946143110yui_3_16_0_1_1431786202651_4942" dir="ltr">When
it behaves as normal switch it installs rules with maximum priority
65535 even though i set msg.priotiry a low value .It seams as i can't
change the flows priority for the switch,so i have to wait until
timeouts expire and the new flows from my event will work.Have you
experienced similare thing with overlapping flow matches?</div><div style="" class="" id="yiv1946143110yui_3_16_0_1_1431786202651_5121" dir="ltr"><br style="" class=""></div><div style="" class="" id="yiv1946143110yui_3_16_0_1_1431786202651_5132" dir="ltr">p.s. i used dpctl and i saw the flow of the switch always 65535,and the others with my lower priority</div><div style="" class="" id="yiv1946143110yui_3_16_0_1_1431786202651_5153" dir="ltr"><br style="" class=""></div><div style="" class="" id="yiv1946143110yui_3_16_0_1_1431786202651_5176" dir="ltr">(i only added priority in the openflow mod message which installs flows,above default switch timeouts)</div><div style="" class="" id="yiv1946143110yui_3_16_0_1_1431786202651_5190" dir="ltr"><br style="" class=""></div><div id="yui_3_16_0_1_1431786202651_23321" dir="ltr">Thanks in advance!!!</div><div style="" class="" id="yui_3_16_0_1_1431786202651_23304"><br style="" class=""></div></div></blockquote></div><br></div></body></html>