<div class="socmaildefaultfont" dir="ltr" style="font-family:Arial, Helvetica, sans-serif;font-size:10pt" ><div dir="ltr" >THanks for the answer, my env is actually running test after applying <a href="https://github.com/openvswitch/ovs/commit/e120ff1f8e4dbb0b889b26e0be082376a32090bc" >https://github.com/openvswitch/ovs/commit/e120ff1f8e4dbb0b889b26e0be082376a32090bc</a></div>
<div dir="ltr" >so can't restart neutron agent (a different story) </div>
<div dir="ltr" > </div>
<div dir="ltr" >I will post what we saw when stop neutorn agent when the system finish the test, basically, the br-ex flow will be wiped out unless you restart neutorn-ovs-agent... thanks</div>
<div dir="ltr" > </div>
<div dir="ltr" ><div class="socmaildefaultfont" dir="ltr" style="font-family:Arial, Helvetica, sans-serif;font-size:10.5pt" ><div class="socmaildefaultfont" dir="ltr" style="font-family:Arial, Helvetica, sans-serif;font-size:10.5pt" ><div dir="ltr" ><div style="font-size: 12pt; font-weight: bold; font-family: sans-serif; color: #7C7C5F;" >Ji Chen</div>
<div style="font-size: 10pt; font-weight: bold; font-family: sans-serif;" >z Infrastructure as a Service architect</div>
<div style="font-size: 8pt; font-family: sans-serif; margin-top: 10px;" ><div><span style="font-weight: bold; color: #336699;" >Phone: </span>10-82451493</div>
<div><span style="font-weight: bold; color: #336699;" >E-mail: </span><a href="mailto:jichenjc@cn.ibm.com" style="color: #555" >jichenjc@cn.ibm.com</a></div></div></div></div></div></div>
<div dir="ltr" > </div>
<div dir="ltr" > </div>
<blockquote data-history-content-modified="1" dir="ltr" style="border-left:solid #aaaaaa 2px; margin-left:5px; padding-left:5px; direction:ltr; margin-right:0px" >----- Original message -----<br>From: Slawek Kaplonski <skaplons@redhat.com><br>To: Chen CH Ji <jichenjc@cn.ibm.com><br>Cc: openstack-discuss@lists.openstack.org<br>Subject: [EXTERNAL] Re: [openstack-discuss][neutron] is neutron-openvswitch-agent needed for network connection on provider network?<br>Date: Mon, Feb 24, 2020 6:03 PM<br>
<div><font face="Default Monospace,Courier New,Courier,monospace" size="2" >Hi,<br><br>It isn’t expected behaviour that data plane is broken just because neutron-ovs-agent is stopped. Agent should configure flows/iptables/ports and it should works even if agent is down.<br>Can You check exactly what is causing packet drops? Is it some missing open flow rule, something in iptables? Or maybe something else?<br><br>> On 21 Feb 2020, at 10:17, Chen CH Ji <jichenjc@cn.ibm.com> wrote:<br>><br>> We are running provider network with VLAN /FLAT, does the neutron-openvswitch-agent is mandatory to be running in order to make the VM deployed able to connect outside?<br>> <br>> e.g. I have a VM instance-00000027, I login the VM and ping out side, in the mean time, use another session to<br>> systemctl stop neutron-openvswitch-agent.service then wait for a few minutes, the ping will stop, does this is an expected behavior?<br>> I know nova-compute is not running won't affect VM functionality, but does neutron openvswitch agent is needed or not? Thanks a lot<br>> <br>> [root@kvm02 ~]# virsh list<br>> Id Name State<br>> -----------------------------------<br>> 4 instance-00000027 running<br>> <br>> [root@kvm02 ~]# virsh console 4<br>> Connected to domain instance-00000027<br>> Escape character is ^]<br>> [root@dede ~]# ping<br>> [root@dede ~]# ping 172.16.32.1<br>> PING 172.16.32.1 (172.16.32.1) 56(84) bytes of data.<br>> 64 bytes from 172.16.32.1: icmp_seq=1 ttl=64 time=19.8 ms<br>> 64 bytes from 172.16.32.1: icmp_seq=2 ttl=64 time=0.667 ms<br>> 64 bytes from 172.16.32.1: icmp_seq=3 ttl=64 time=0.774 ms<br>> <br>> Ji Chen<br>> z Infrastructure as a Service architect<br>> Phone: 10-82451493<br>> E-mail: jichenjc@cn.ibm.com<br>><br><br>—<br>Slawek Kaplonski<br>Senior software engineer<br>Red Hat</font><br><br> </div></blockquote>
<div dir="ltr" > </div></div><BR>