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/NETVIRT-58 netvirt <p>ODL version: Beryllium SR3<br/> openstack version: Mitaka</p> <p>issue scenario:<br/> Instance in Openstack to use multiple external provider networks.<br/> we are using ODL for L2 handling and Neutron L3-agent to handle L3.<br/> because ODL does not support Multiple external network.<br/> in this scenario we are expecting ODL to create patch port in br-int and br-ex during external network creation.Also ODL controller to wirte the flows which forward the traffic via patch ports when the user attach the gateway and interface to the router.</p> <p> The same use case with openvswitch as L2 and Neutron L3-agent to handle L3.Openvswitch driver creating patch ports also writing flows(converting local VLAN to provider VLAN and sending the packets to respective interface) in br-int and br-ex to forward the packets to external Network host.</p> <p>steps to reproduce the Bug:</p> <p>1.in devstack local.conf file make changes to create vlan network.<br/> Q_ML2_PLUGIN_TYPE_DRIVERS=vlan,gre,vxlan,flat <br/> <span class="error">&#91;ovs&#93;</span><br/> local_ip=$HOST_IP<br/> bridge_mappings = physnet1:br-ex<br/> <span class="error">&#91;ml2_type_vlan&#93;</span><br/> network_vlan_ranges=physnet1:171:172</p> <p>2.comment "ovsdb.l3.fwd.enabled=yes" in "etc/custom.properties" file.<br/> 3.start the controller and install "odl-ovsdb-openstack".<br/> 4.Run the devstack "./stack.sh"<br/> 5.After stack UP create br-ex and add port to it.<br/> "sudo ovs-vsctl add-br br-ex"<br/> "sudo ovs-vsctl add-port br-ex ens35"<br/> 6.now create internal network and VM'scenario<br/> 7.Create two VLAN provider network.<br/> 8.Create two Routers and attach Gateway.<br/> 9.Associate floating IP try to reach external Gateway from the openstack VM instance.</p> <p>Operating System: All<br/> Platform: All</p> NETVIRT-58

Patch ports are not created while using ODL for L2 handling and Neutron L3-agent to handle L3 in legacy netvirt

Bug Resolved Done balakrishnan k balakrishnan k Fri, 12 Aug 2016 06:10:31 +0000 Mon, 8 Apr 2019 16:58:29 +0000 Tue, 27 Dec 2016 05:05:52 +0000 Beryllium 0 5 <p>Approach:<br/> 1.Added new flag in "etc/custom.properties" enable the flag (ovsdb.l3.multiple.network.enabled=yes) and start the controller.<br/> 2.Create external bridge manually in openstack control node and set provider mappings.<br/> "sudo ovs-vsctl add-br br-ex" <br/> "ovs-vsctl set Open_vSwitch 5d633410-99d6-4ada-b371-71ccd1f99546 other_config:provider_mappings=physnet1:br-ex"<br/> 3.Add potrs to the external bridge and add VLAN tag.<br/> "sudo ovs-vsctl add-port br-ex ens36"<br/> "sudo ovs-vsctl add-port br-ex ens36.100"<br/> "ovs-vsctl set port ens36.100 tag=100"<br/> 4.Execute "sudo ovs-vsctl set-manager tcp:10.106.138.159:6640" in openstack control node.<br/> 5.During set-manager execution in netvirt check the new flag(ovsdb.l3.multiple.network.enabled=yes) value, if it is enabled,<br/> create patch port between br-int and external bridge.</p> <p> a.Read the external bridge from provider-mappings/bridge_mappings.<br/> b.Use external bridge name and integration bridge name to create patch ports between them.</p> <p>6.Neutron L3-agent will create a port in br-int for router-gateway,netvirt receives port event for router-gateway.in southbound handler check the newflag(ovsdb.l3.multiple.network.enabled=yes) is enabled and port update is for router-gateway then write the following flows to support Vlan external network.</p> <p>6a.Handle the packets coming from external router gateway to br-int(write the flow to match the external router gateway port and MAC then forward the packets to br-ex via patch port)<br/> 6b.Handle the packets reaching on br-ex via patch port(write the flow to tag the VLAN and forward the packets to external interface connected on br-ex).<br/> 6c.Handle the packets coming from br-ex via patch port to br-int.</p> <p> sample flows:</p> <p> flows added in br-int:<br/> 6a.cookie=0x0, duration=7451.336s, table=100, n_packets=147, n_bytes=6230, idle_age=6506, priority=4,in_port=5,dl_src=fa:16:3e:74:a9:2e actions=output:3<br/> 6c.cookie=0x0, duration=7451.336s, table=0, n_packets=147, n_bytes=6230, idle_age=6506, priority=4,in_port=3,dl_vlan=100 actions=strip_vlan,output:5</p> <p> flows added in br-ex:</p> <p> 6b.cookie=0x0, duration=7451.336s, table=0, n_packets=147, n_bytes=6230, idle_age=6506, priority=4,in_port=3,dl_src=fa:16:3e:74:a9:2e actions=mod_vlan_vid:100,NORMAL</p> <p>additionally default flow in external bridge to drop the packets coming from patch port and no match found.<br/> cookie=0x0, duration=282604.211s, table=0, n_packets=180, n_bytes=12500, idle_age=5680, hard_age=65534, priority=2,in_port=3 actions=drop</p> <p> port 5 --&gt;external network gateway.<br/> port 3--&gt;patch-ext created in br-int<br/> port 3--&gt;patch-int created in br-ex</p> <p>we are using table 100 to write the flows in br-int is that fine?<br/> All the above operation performed only when flag(ovsdb.l3.multiple.network.enabled=yes) is enabled, so this will not affect existing functionality of ODL.</p> <p>we have tested this approach manually by creating patch ports and adding the flows.patch pushed for above aproach: <a href="https://git.opendaylight.org/gerrit/#/c/45812/" class="external-link" target="_blank" rel="nofollow noopener">https://git.opendaylight.org/gerrit/#/c/45812/</a></p> Development External issue ID 6395 External issue URL Rank 0|i01pgf: