<div dir="ltr"><div>Chen , <br><br></div> I think ur packets is getting dropped. U can verify this by just checking the packets coming from compute node hitting which of the rules in br-int. <br></div><div class="gmail_extra">
<br><br><div class="gmail_quote">On Wed, Feb 12, 2014 at 10:56 AM, Robert Collins <span dir="ltr"><<a href="mailto:robertc@robertcollins.net" target="_blank">robertc@robertcollins.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Check the outbound ofctl rules on your hypervisor nodes. If they<br>
aren't tagging traffic properly, it won't be processed by the incoming<br>
gre rules and you'll see the symptoms you have.<br>
<div class="HOEnZb"><div class="h5"><br>
On 8 February 2014 05:41, Chris Baker <<a href="mailto:openstack2014@qq.com">openstack2014@qq.com</a>> wrote:<br>
> Hi guys,<br>
><br>
> My havana installation has 3 nodes:<br>
> control node, runs keystone APIs and neutron server;<br>
> network node, runs l3, dhcp, metadata, ovs agents; with VLAN mode<br>
> compute node, runs nova compute and ovs agents;<br>
><br>
> repo from <a href="http://repos.fedorapeople.org/repos/openstack/openstack-havana" target="_blank">http://repos.fedorapeople.org/repos/openstack/openstack-havana</a>,<br>
> and the os gets updated well with latest kernel.<br>
><br>
><br>
> Currently my VM can't get dhcp ack from network node.<br>
> Based the topology picture for the package flow:<br>
> <a href="http://docs.openstack.org/admin-guide-cloud/content/figures/10/a/common/figures/under-the-hood-scenario-1-ovs-network.png" target="_blank">http://docs.openstack.org/admin-guide-cloud/content/figures/10/a/common/figures/under-the-hood-scenario-1-ovs-network.png</a><br>
><br>
> With the tcpdump result on both network and compute node, it says the dhcp<br>
> request successfully leaves compute node, and it can reach the "int-br-eth1"<br>
> of network node, but not the next step br "br-int", so the dnsmasq would not<br>
> able to ack. I think this is the problem why I can't get dhcp ipaddr.<br>
><br>
> # uname -r<br>
> 2.6.32-358.123.2.openstack.el6.x86_64<br>
><br>
> # ip netns (should we say namespace works well?)<br>
> qdhcp-11f3adc1-6a2e-429b-9679-b565347e2f74<br>
> qdhcp-4aaa7c19-7864-4b17-aebc-d6aa354d4cd5<br>
> qdhcp-285e259e-e3ec-4149-81db-8e94e1713aa2<br>
> qdhcp-4044cdf0-717b-4628-9ce0-a9ff49533d8f<br>
> qrouter-76c9b884-5928-42f4-a016-afab1b72066b<br>
><br>
> Anyone can help where/which section I should check for the issue next? or<br>
> let me know if other info is needed.<br>
> Thanks a lot.<br>
><br>
> Chris<br>
><br>
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<br>
<br>
<br>
</div><span class="HOEnZb"><font color="#888888">--<br>
Robert Collins <<a href="mailto:rbtcollins@hp.com">rbtcollins@hp.com</a>><br>
Distinguished Technologist<br>
HP Converged Cloud<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
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