https://jira.opendaylight.org This file is an XML representation of an issue en-us 8.20.10 820010 22-06-2022 https://jira.opendaylight.org/browse/L2SWITCH-44 l2switch <p>I guess related with 1995.</p> <p>To reproduce:</p> <ul class="alternate" type="square"> <li>Start controller with odl-l2switch-switch-ui</li> <li>Bring a mininet loop topology (i can provide one)</li> <li>pingall works</li> <li>Remove 1 link: link s1 s2 down</li> <li>pingall does not work</li> </ul> <p>BR/Luis</p> <p>Operating System: Linux<br/> Platform: PC</p> L2SWITCH-44

Loopremover module does not recalculate after link down

Bug Confirmed Unresolved Unassigned Luis Gomez Sat, 23 May 2015 00:29:31 +0000 Thu, 19 Oct 2017 22:33:51 +0000 unspecified General 0 1 <p>If link goes down between two switches the topology reacts correctly, but if the link connects a switch and host topology doesn't react correctly.</p> <p>Luis - Are we interested in both cases or only case between switch and switch.</p> <p>This bug is only for switch to switch link, are you saying this work now?</p> <p>Yes Luis. It works with switch-switch link.</p> <p>Here is the test I just did and failed:</p> <p>1) Start ring:</p> <p>vagrant@mininet-vm-ubuntu-new:~\&gt; sudo mn --controller=remote,ip=192.168.0.1 --mac --custom customtopo.py --topo ring</p> <ul> <li> <ul> <li> <ul> <li>Creating network</li> <li>Adding controller</li> <li>Adding hosts:<br/> h1 h2 h3 </li> <li>Adding switches:<br/> s1 s2 s3 </li> <li>Adding links:<br/> (s1, h1) (s2, h2) (s2, s1) (s3, h3) (s3, s1) (s3, s2) </li> <li>Configuring hosts<br/> h1 h2 h3 </li> <li>Starting controller<br/> c0 </li> <li>Starting 3 switches<br/> s1 s2 s3 ...</li> <li>Starting CLI:</li> </ul> </li> </ul> </li> </ul> <p>2) Pingall:<br/> mininet&gt; pingall</p> <ul> <li> <ul> <li> <ul> <li>Ping: testing ping reachability<br/> h1 -&gt; h2 h3 <br/> h2 -&gt; h1 h3 <br/> h3 -&gt; h1 h2 </li> <li>Results: 0% dropped (6/6 received)<br/> mininet&gt; dpctl dump-flows</li> <li>s1 ------------------------------------------------------------------------<br/> NXST_FLOW reply (xid=0x4):<br/> cookie=0x2b00000000000004, duration=37.310s, table=0, n_packets=14, n_bytes=1136, idle_age=28, priority=0 actions=drop<br/> cookie=0x2b00000000000005, duration=33.401s, table=0, n_packets=10, n_bytes=700, idle_age=12, priority=2,in_port=1 actions=output:2,CONTROLLER:65535<br/> cookie=0x2b00000000000006, duration=33.400s, table=0, n_packets=24, n_bytes=1680, idle_age=12, priority=2,in_port=2 actions=output:1<br/> cookie=0x2b00000000000002, duration=37.285s, table=0, n_packets=16, n_bytes=1360, idle_age=2, priority=100,dl_type=0x88cc actions=CONTROLLER:65535</li> <li>s2 ------------------------------------------------------------------------<br/> NXST_FLOW reply (xid=0x4):<br/> cookie=0x2b00000000000002, duration=37.314s, table=0, n_packets=12, n_bytes=996, idle_age=35, priority=0 actions=drop<br/> cookie=0x2b00000000000003, duration=33.403s, table=0, n_packets=12, n_bytes=840, idle_age=12, priority=2,in_port=3 actions=output:2,output:1<br/> cookie=0x2b00000000000004, duration=33.403s, table=0, n_packets=12, n_bytes=840, idle_age=12, priority=2,in_port=1 actions=output:2,output:3<br/> cookie=0x2b00000000000002, duration=33.403s, table=0, n_packets=10, n_bytes=700, idle_age=12, priority=2,in_port=2 actions=output:3,output:1,CONTROLLER:65535<br/> cookie=0x2b00000000000000, duration=37.305s, table=0, n_packets=16, n_bytes=1360, idle_age=2, priority=100,dl_type=0x88cc actions=CONTROLLER:65535</li> <li>s3 ------------------------------------------------------------------------<br/> NXST_FLOW reply (xid=0x4):<br/> cookie=0x2b00000000000000, duration=37.290s, table=0, n_packets=13, n_bytes=1058, idle_age=28, priority=0 actions=drop<br/> cookie=0x2b00000000000000, duration=33.406s, table=0, n_packets=24, n_bytes=1680, idle_age=12, priority=2,in_port=1 actions=output:2<br/> cookie=0x2b00000000000001, duration=33.406s, table=0, n_packets=10, n_bytes=700, idle_age=12, priority=2,in_port=2 actions=output:1,CONTROLLER:65535<br/> cookie=0x2b00000000000004, duration=37.309s, table=0, n_packets=16, n_bytes=1360, idle_age=2, priority=100,dl_type=0x88cc actions=CONTROLLER:65535</li> </ul> </li> </ul> </li> </ul> <p>3) From the above, link s1-s3 is being blocked by loop-remover, lets remove link s1-s2:<br/> mininet&gt; link s1 s2 down<br/> mininet&gt; dpctl dump-flows</p> <ul> <li> <ul> <li> <ul> <li>s1 ------------------------------------------------------------------------<br/> NXST_FLOW reply (xid=0x4):<br/> cookie=0x2b00000000000004, duration=114.608s, table=0, n_packets=14, n_bytes=1136, idle_age=105, priority=0 actions=drop<br/> cookie=0x2b00000000000005, duration=110.699s, table=0, n_packets=10, n_bytes=700, idle_age=89, priority=2,in_port=1 actions=output:2,CONTROLLER:65535<br/> cookie=0x2b00000000000006, duration=110.698s, table=0, n_packets=24, n_bytes=1680, idle_age=89, priority=2,in_port=2 actions=output:1<br/> cookie=0x2b00000000000002, duration=114.583s, table=0, n_packets=47, n_bytes=3995, idle_age=0, priority=100,dl_type=0x88cc actions=CONTROLLER:65535</li> <li>s2 ------------------------------------------------------------------------<br/> NXST_FLOW reply (xid=0x4):<br/> cookie=0x2b00000000000002, duration=114.612s, table=0, n_packets=12, n_bytes=996, idle_age=112, priority=0 actions=drop<br/> cookie=0x2b00000000000003, duration=110.701s, table=0, n_packets=12, n_bytes=840, idle_age=89, priority=2,in_port=3 actions=output:2,output:1<br/> cookie=0x2b00000000000004, duration=110.701s, table=0, n_packets=12, n_bytes=840, idle_age=89, priority=2,in_port=1 actions=output:2,output:3<br/> cookie=0x2b00000000000002, duration=110.701s, table=0, n_packets=10, n_bytes=700, idle_age=89, priority=2,in_port=2 actions=output:3,output:1,CONTROLLER:65535<br/> cookie=0x2b00000000000000, duration=114.603s, table=0, n_packets=47, n_bytes=3995, idle_age=0, priority=100,dl_type=0x88cc actions=CONTROLLER:65535</li> <li>s3 ------------------------------------------------------------------------<br/> NXST_FLOW reply (xid=0x4):<br/> cookie=0x2b00000000000000, duration=114.588s, table=0, n_packets=13, n_bytes=1058, idle_age=105, priority=0 actions=drop<br/> cookie=0x2b00000000000000, duration=110.704s, table=0, n_packets=24, n_bytes=1680, idle_age=89, priority=2,in_port=1 actions=output:2<br/> cookie=0x2b00000000000001, duration=110.704s, table=0, n_packets=10, n_bytes=700, idle_age=89, priority=2,in_port=2 actions=output:1,CONTROLLER:65535<br/> cookie=0x2b00000000000004, duration=114.607s, table=0, n_packets=48, n_bytes=4080, idle_age=0, priority=100,dl_type=0x88cc actions=CONTROLLER:65535</li> </ul> </li> </ul> </li> </ul> <p>4) From the above, flows do not get updated so ping will fail:<br/> mininet&gt; pingall</p> <ul> <li> <ul> <li> <ul> <li>Ping: testing ping reachability<br/> h1 -&gt; ^C<br/> Interrupt<br/> stopping h1</li> </ul> </li> </ul> </li> </ul> Development External issue ID 3345 External issue URL Priority Rank 0|i01z73: