Hi, First to make sure there are no misunderstandings: the entries in the switch are installed by the POX controller (as you have probably already noticed).
For the test below (what you proposed) I added the /31 entry by hand to make sure the issue is not due to some controller logic issue. And just a remark: traffic is same as in the previous mail but at 1000 packet/s to make it easier to interpret the values. So starting traffic, let controller install entries and dump after a some time: NXST_FLOW reply (xid=0x4): cookie=0x3e8, duration=23.611s, table=0, n_packets=28, n_bytes=16520, idle_age=0, icmp,nw_src=10.1.6.0/30,nw_dst=10.1.4.0/30 actions=output:1 cookie=0x0, duration=52.033s, table=0, n_packets=31, n_bytes=1860, idle_age=0, priority=65000,dl_dst=01:23:20:00:00:01,dl_type=0x88cc actions=CONTROLLER:65535 cookie=0x3eb, duration=18.558s, table=0, n_packets=0, n_bytes=0, idle_age=18, arp,dl_src=00:25:90:64:f9:3e,dl_dst=90:e2:ba:00:9f:86 actions=output:2 cookie=0x3ea, duration=18.598s, table=0, n_packets=1, n_bytes=60, idle_age=18, arp,dl_src=90:e2:ba:00:9f:86,dl_dst=00:25:90:64:f9:3e actions=output:1 cookie=0x3e9, duration=23.606s, table=0, n_packets=23544, n_bytes=25097904, idle_age=0, udp,nw_src= 10.1.4.0/30,nw_dst=10.1.6.0/30,tp_src=20,tp_dst=1000 actions=output:2 Kill traffic generation and dump: NXST_FLOW reply (xid=0x4): cookie=0x3e8, duration=40.183s, table=0, n_packets=30, n_bytes=17700, idle_age=15, icmp,nw_src=10.1.6.0/30,nw_dst=10.1.4.0/30 actions=output:1 cookie=0x0, duration=68.605s, table=0, n_packets=41, n_bytes=2460, idle_age=0, priority=65000,dl_dst=01:23:20:00:00:01,dl_type=0x88cc actions=CONTROLLER:65535 cookie=0x3eb, duration=35.13s, table=0, n_packets=1, n_bytes=60, idle_age=10, arp,dl_src=00:25:90:64:f9:3e,dl_dst=90:e2:ba:00:9f:86 actions=output:2 cookie=0x3ea, duration=35.17s, table=0, n_packets=2, n_bytes=120, idle_age=10, arp,dl_src=90:e2:ba:00:9f:86,dl_dst=00:25:90:64:f9:3e actions=output:1 cookie=0x3e9, duration=40.178s, table=0, n_packets=*25049, n_bytes=26702234 *, idle_age=15, udp,nw_src= 10.1.4.0/30,nw_dst=10.1.6.0/30,tp_src=20,tp_dst=1000 actions=output:2 Starting traffic again and dump: cookie=0x3e8, duration=64.755s, table=0, n_packets=55, n_bytes=32450, idle_age=0, icmp,nw_src=10.1.6.0/30,nw_dst=10.1.4.0/30 actions=output:1 cookie=0x0, duration=93.177s, table=0, n_packets=54, n_bytes=3240, idle_age=3, priority=65000,dl_dst=01:23:20:00:00:01,dl_type=0x88cc actions=CONTROLLER:65535 cookie=0x3eb, duration=59.702s, table=0, n_packets=3, n_bytes=180, idle_age=9, arp,dl_src=00:25:90:64:f9:3e,dl_dst=90:e2:ba:00:9f:86 actions=output:2 cookie=0x3ea, duration=59.742s, table=0, n_packets=4, n_bytes=240, idle_age=9, arp,dl_src=90:e2:ba:00:9f:86,dl_dst=00:25:90:64:f9:3e actions=output:1 cookie=0x3e9, duration=64.75s, table=0, n_packets=44305, n_bytes=47229130, idle_age=0, udp,nw_src=10.1.4.0/30,nw_dst=10.1.6.0/30,tp_src=20,tp_dst=1000actions=output:2 Adding entry by hand (sudo ovs-ofctl add-flow br0 cookie=0x3e8,table=0,udp,nw_src= 10.1.4.0/31,nw_dst=10.1.6.2/31,tp_src=20,tp_dst=1000,priority=65100,actions=output:2) and dump: NXST_FLOW reply (xid=0x4): cookie=0x3e8, duration=1.584s, table=0, n_packets=38256, n_bytes=40780896, idle_age=0, priority=65100,udp,nw_src= 10.1.4.0/31,nw_dst=10.1.6.2/31,tp_src=20,tp_dst=1000 actions=output:2 cookie=0x3e8, duration=83.559s, table=0, n_packets=74, n_bytes=43660, idle_age=0, icmp,nw_src=10.1.6.0/30,nw_dst=10.1.4.0/30 actions=output:1 cookie=0x0, duration=111.981s, table=0, n_packets=67, n_bytes=4020, idle_age=0, priority=65000,dl_dst=01:23:20:00:00:01,dl_type=0x88cc actions=CONTROLLER:65535 cookie=0x3eb, duration=78.506s, table=0, n_packets=4, n_bytes=240, idle_age=3, arp,dl_src=00:25:90:64:f9:3e,dl_dst=90:e2:ba:00:9f:86 actions=output:2 cookie=0x3ea, duration=78.546s, table=0, n_packets=5, n_bytes=300, idle_age=3, arp,dl_src=90:e2:ba:00:9f:86,dl_dst=00:25:90:64:f9:3e actions=output:1 cookie=0x3e9, duration=83.554s, table=0,* n_packets=25049, n_bytes=26702234 *, idle_age=2, udp,nw_src= 10.1.4.0/30,nw_dst=10.1.6.0/30,tp_src=20,tp_dst=1000 actions=output:2 So indeed, it seems to return to the values when the flow was idle. Does this help? Kind regards, Tim 2013/5/1 Ben Pfaff <b...@nicira.com> > On Tue, Apr 30, 2013 at 12:49:26PM +0200, Tmusic wrote: > > Let me post some more debug information then: > > [...] > > > Does this provides more useful information? > > It gets me past the "I don't really believe this, it must be some > misunderstanding" hurdle ;-) > > Are you willing to do a few experiments? Here is one idea: > > 1. Start your stream and add the initial flow to the flow table (in > whatever order you like). Let it run for a while, a few seconds at > least. > > 2. Dump stats with "ovs-ofctl dump-flows". > > 3. Stop your stream and "sleep 5" (or just wait 5 or more seconds > patiently). > > 4. Dump stats with "ovs-ofctl dump-flows". > > 5. Restart your stream. Let it run for a while, a few seconds at least. > > 6. Add your higher-priority flow to the flow table. Let the stream run > for a while, a few seconds at least. > > 7. Dump stats with "ovs-ofctl dump-flows". > > The question I'm trying to answer is whether the low-priority flow's > stats drop to zero in step 7, or to the values seen in step 2, or > something else entirely. > > Thanks, > > Ben. >
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