OpenDaylight JIRA https://jira.opendaylight.org This file is an XML representation of an issue en-us 8.20.10 820010 22-06-2022 [NETVIRT-17] Make Gateway Arp resolve cluster aware https://jira.opendaylight.org/browse/NETVIRT-17 netvirt <p>In 3-node cluster setup, all instances of net-virt runs the gateway mac resolver and send out ARP request for the external network gateway address. Although it's does not affect the functionality, but it generate x3 time ARP packets, which it should not do.</p> <p>Operating System: All<br/> Platform: All</p> NETVIRT-17 Make Gateway Arp resolve cluster aware Bug Medium Resolved Won't Do Anil Vishnoi Anil Vishnoi Wed, 11 May 2016 09:06:24 +0000 Fri, 9 Mar 2018 18:21:29 +0000 Fri, 9 Mar 2018 17:53:06 +0000 Beryllium 0 4 <p>Anil,<br/> To reproduce the bug, we've used 3 nodes cluster setup, a control and compute node.<br/> Once the stack is up, we created an external network (external 192.164.1.1). </p> <p>Following are the commands we have used:</p> <ul> <li>source openrc admin admin</li> <li>neutron net-create public --router:external</li> <li>neutron subnet-create public 192.165.1.0/24 --name vlan --enable_dhcp=False --allocation_pool start=192.165.1.25,end=192.165.1.45 --gateway 192.165.1.1</li> <li>neutron router-create router1</li> <li>neutron router-gateway-set &lt;router-id&gt; &lt;external sub-network-id&gt;</li> <li>neutron floatingip-create public</li> </ul> <p>and we got the dump flows for br-ex</p> <p>PFB dump flows:</p> <p><span class="error">&#91;stack@devstack-control devstack&#93;</span>$ sudo ovs-ofctl -O OpenFlow13 dump-flows br-ex<br/> OFPST_FLOW reply (OF1.3) (xid=0x2):<br/> cookie=0x0, duration=14247.554s, table=0, n_packets=0, n_bytes=0, dl_type=0x88cc actions=CONTROLLER:65535<br/> cookie=0x0, duration=14247.554s, table=0, n_packets=1968, n_bytes=118128, priority=0 actions=NORMAL<br/> <span class="error">&#91;stack@devstack-control devstack&#93;</span>$<br/> <span class="error">&#91;stack@devstack-control devstack&#93;</span>$<br/> <span class="error">&#91;stack@devstack-control devstack&#93;</span>$ sudo ovs-ofctl -O OpenFlow13 dump-flows br-ex<br/> OFPST_FLOW reply (OF1.3) (xid=0x2):<br/> cookie=0x0, duration=14248.969s, table=0, n_packets=0, n_bytes=0, dl_type=0x88cc actions=CONTROLLER:65535<br/> cookie=0x0, duration=14248.969s, table=0, n_packets=1968, n_bytes=118128, priority=0 actions=NORMAL<br/> <span class="error">&#91;stack@devstack-control devstack&#93;</span>$ sudo ovs-ofctl -O OpenFlow13 dump-flows br-ex<br/> OFPST_FLOW reply (OF1.3) (xid=0x2):<br/> cookie=0x0, duration=14249.906s, table=0, n_packets=0, n_bytes=0, dl_type=0x88cc actions=CONTROLLER:65535<br/> cookie=0x372, duration=0.748s, table=0, n_packets=1, n_bytes=60, priority=10000,arp,dl_dst=fa:16:3e:f0:84:92,arp_spa=192.164.1.6,arp_tpa=192.164.1.25,arp_op=2,arp_tha=fa:16:3e:f0:84:92 actions=CONTROLLER:65535<br/> cookie=0x0, duration=14249.906s, table=0, n_packets=1968, n_bytes=118128, priority=0 actions=NORMAL<br/> <span class="error">&#91;stack@devstack-control devstack&#93;</span>$<br/> <span class="error">&#91;stack@devstack-control devstack&#93;</span>$ sudo ovs-ofctl -O OpenFlow13 dump-flows br-ex<br/> OFPST_FLOW reply (OF1.3) (xid=0x2):<br/> cookie=0x0, duration=14254.949s, table=0, n_packets=0, n_bytes=0, dl_type=0x88cc actions=CONTROLLER:65535<br/> cookie=0x372, duration=5.791s, table=0, n_packets=2, n_bytes=120, priority=10000,arp,dl_dst=fa:16:3e:f0:84:92,arp_spa=192.164.1.6,arp_tpa=192.164.1.25,arp_op=2,arp_tha=fa:16:3e:f0:84:92 actions=CONTROLLER:65535<br/> cookie=0x0, duration=14254.949s, table=0, n_packets=1969, n_bytes=118188, priority=0 actions=NORMAL<br/> <span class="error">&#91;stack@devstack-control devstack&#93;</span>$<br/> <span class="error">&#91;stack@devstack-control devstack&#93;</span>$ sudo ovs-ofctl -O OpenFlow13 dump-flows br-ex<br/> OFPST_FLOW reply (OF1.3) (xid=0x2):<br/> cookie=0x0, duration=14298.204s, table=0, n_packets=0, n_bytes=0, dl_type=0x88cc actions=CONTROLLER:65535<br/> cookie=0x0, duration=14298.204s, table=0, n_packets=1976, n_bytes=118608, priority=0 actions=NORMAL</p> <p>According to our observation, the packet count varies periodically in a particular time interval. Kindly let us know whether our observation is right.</p> <p>Attachment br-ex_dumpflows.jpg has been added with description: br-ex dump-flows</p> <p>(In reply to Arthi Bhattacharjee from comment #1)<br/> &gt; Created attachment 1010 <span class="error">&#91;details&#93;</span><br/> &gt; br-ex dump-flows<br/> &gt; <br/> &gt; Anil,<br/> &gt; To reproduce the bug, we've used 3 nodes cluster setup, a control and<br/> &gt; compute node.<br/> &gt; Once the stack is up, we created an external network (external 192.164.1.1). <br/> &gt; <br/> &gt; Following are the commands we have used:<br/> &gt; <br/> &gt; * source openrc admin admin<br/> &gt; * neutron net-create public --router:external<br/> &gt; * neutron subnet-create public 192.165.1.0/24 --name vlan<br/> &gt; --enable_dhcp=False --allocation_pool start=192.165.1.25,end=192.165.1.45<br/> &gt; --gateway 192.165.1.1<br/> &gt; * neutron router-create router1<br/> &gt; * neutron router-gateway-set &lt;router-id&gt; &lt;external sub-network-id&gt;<br/> &gt; * neutron floatingip-create public<br/> &gt; <br/> &gt; and we got the dump flows for br-ex<br/> &gt; <br/> &gt; PFB dump flows:<br/> &gt; <br/> &gt; <span class="error">&#91;stack@devstack-control devstack&#93;</span>$ sudo ovs-ofctl -O OpenFlow13 dump-flows<br/> &gt; br-ex<br/> &gt; OFPST_FLOW reply (OF1.3) (xid=0x2):<br/> &gt; cookie=0x0, duration=14247.554s, table=0, n_packets=0, n_bytes=0,<br/> &gt; dl_type=0x88cc actions=CONTROLLER:65535<br/> &gt; cookie=0x0, duration=14247.554s, table=0, n_packets=1968, n_bytes=118128,<br/> &gt; priority=0 actions=NORMAL<br/> &gt; <span class="error">&#91;stack@devstack-control devstack&#93;</span>$<br/> &gt; <span class="error">&#91;stack@devstack-control devstack&#93;</span>$<br/> &gt; <span class="error">&#91;stack@devstack-control devstack&#93;</span>$ sudo ovs-ofctl -O OpenFlow13 dump-flows<br/> &gt; br-ex<br/> &gt; OFPST_FLOW reply (OF1.3) (xid=0x2):<br/> &gt; cookie=0x0, duration=14248.969s, table=0, n_packets=0, n_bytes=0,<br/> &gt; dl_type=0x88cc actions=CONTROLLER:65535<br/> &gt; cookie=0x0, duration=14248.969s, table=0, n_packets=1968, n_bytes=118128,<br/> &gt; priority=0 actions=NORMAL<br/> &gt; <span class="error">&#91;stack@devstack-control devstack&#93;</span>$ sudo ovs-ofctl -O OpenFlow13 dump-flows<br/> &gt; br-ex<br/> &gt; OFPST_FLOW reply (OF1.3) (xid=0x2):<br/> &gt; cookie=0x0, duration=14249.906s, table=0, n_packets=0, n_bytes=0,<br/> &gt; dl_type=0x88cc actions=CONTROLLER:65535<br/> &gt; cookie=0x372, duration=0.748s, table=0, n_packets=1, n_bytes=60,<br/> &gt; priority=10000,arp,dl_dst=fa:16:3e:f0:84:92,arp_spa=192.164.1.6,arp_tpa=192.<br/> &gt; 164.1.25,arp_op=2,arp_tha=fa:16:3e:f0:84:92 actions=CONTROLLER:65535<br/> &gt; cookie=0x0, duration=14249.906s, table=0, n_packets=1968, n_bytes=118128,<br/> &gt; priority=0 actions=NORMAL<br/> &gt; <span class="error">&#91;stack@devstack-control devstack&#93;</span>$<br/> &gt; <span class="error">&#91;stack@devstack-control devstack&#93;</span>$ sudo ovs-ofctl -O OpenFlow13 dump-flows<br/> &gt; br-ex<br/> &gt; OFPST_FLOW reply (OF1.3) (xid=0x2):<br/> &gt; cookie=0x0, duration=14254.949s, table=0, n_packets=0, n_bytes=0,<br/> &gt; dl_type=0x88cc actions=CONTROLLER:65535<br/> &gt; cookie=0x372, duration=5.791s, table=0, n_packets=2, n_bytes=120,<br/> &gt; priority=10000,arp,dl_dst=fa:16:3e:f0:84:92,arp_spa=192.164.1.6,arp_tpa=192.<br/> &gt; 164.1.25,arp_op=2,arp_tha=fa:16:3e:f0:84:92 actions=CONTROLLER:65535<br/> &gt; cookie=0x0, duration=14254.949s, table=0, n_packets=1969, n_bytes=118188,<br/> &gt; priority=0 actions=NORMAL<br/> &gt; <span class="error">&#91;stack@devstack-control devstack&#93;</span>$<br/> &gt; <span class="error">&#91;stack@devstack-control devstack&#93;</span>$ sudo ovs-ofctl -O OpenFlow13 dump-flows<br/> &gt; br-ex<br/> &gt; OFPST_FLOW reply (OF1.3) (xid=0x2):<br/> &gt; cookie=0x0, duration=14298.204s, table=0, n_packets=0, n_bytes=0,<br/> &gt; dl_type=0x88cc actions=CONTROLLER:65535<br/> &gt; cookie=0x0, duration=14298.204s, table=0, n_packets=1976, n_bytes=118608,<br/> &gt; priority=0 actions=NORMAL<br/> &gt; <br/> &gt; <br/> &gt; According to our observation, the packet count varies periodically in a<br/> &gt; particular time interval. Kindly let us know whether our observation is<br/> &gt; right.</p> <p>Hi Anil,</p> <p>In above test, we used external gateway address as 192.164.1.6.</p> <p>Legacy NetVirt is deprecated.</p> Development External issue ID 5872 External issue URL Rank 0|i01p7b: