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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">You got it wrong.
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br-int (Intergration bridge) - This is like a point-of-presence for instances to connect and send network traffic.<br>
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br-tun (tunnel bridge) - This bridge serves as the tunnel endpoints. This is also a part of your data network. This is also used by VM. The intent is to have each tenant traffic in a separate tunnel. Packets leaving the instance will carry no vlan id. In br-int
flow rules will add a vlan to the packets from each instance( the vlan id depends on the network ) . In br-tun there is one flow to translate the vlan to a particular tunnel id. So packets leaving br-tun carry tunnel id according to the tenant.
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The br-tun of various nodes (computes and network node) form a mesh of tunnels through which the vm data flows.
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Once you create br-tun and restart the neutron ovs plugin you can see the flow rules using 'ovs-ofctl dump-flows br-int/ br-tun'<br>
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If you do ovs-vsctl show you will see that the br-tun of various nodes have formed a mesh of tunnels.
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You do not need any bridge for management.<br>
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Thank you,<br>
Ageeleshwar K<br>
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<div style="direction: ltr;" id="divRpF767640"><font color="#000000" face="Tahoma" size="2"><b>From:</b> cheniour ghassen [ghacheniour@gmail.com]<br>
<b>Sent:</b> Tuesday, March 25, 2014 6:15 PM<br>
<b>To:</b> Ageeleshwar Kandavelu<br>
<b>Subject:</b> Re: [Openstack] floatting ip are not created<br>
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<div dir="ltr">Hi Ageeleshwar,
<div>I want to thank you first for your answer. I am using gre mode. As i know br-tun are using for management And br-int are used for data forwarding beteween the VMs. As documented in the openstack docs, I have created br-int and indicated tha br-tun are
for management.</div>
<div>I think the problem is because neutron doesn't detect the agents. The below pdf file contain some configurations.</div>
<div>Thank you and i am looking forward for your answer.</div>
<div>sincerely,</div>
<div>Ghassen Cheniour.</div>
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<div class="gmail_quote">On Tue, Mar 25, 2014 at 1:33 PM, Ageeleshwar Kandavelu <span dir="ltr">
<<a href="mailto:Ageeleshwar.Kandavelu@csscorp.com" target="_blank">Ageeleshwar.Kandavelu@csscorp.com</a>></span> wrote:<br>
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<div style="direction:ltr; font-size:10pt; font-family:Tahoma">If you are using gre mode. you have to create br-tun and restart your neutron-ovs agent.<br>
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If you are using vlan you have to create all bridges mentioned in bridge_mappings inside '/etc/neutron/plugins/openvswitch/ovs_neutron_plugin.ini'<br>
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You can not expect your floating ip to work untill you can ping the external router from your instance(using vnc window)<br>
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Thank you,<br>
Ageeleshwar K<br>
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