[Openstack] Quantum Networking Issue with Single Flat Network

Tyler Wilson kupo at linuxdigital.net
Tue Sep 24 22:34:51 UTC 2013

Hello All,

I've been utilizing the Ubuntu 12.04 quickstart guide to setup my OpenStack
cluster and ran into a snag on the networking. As I don't need all traffic
tunneled through the controller/network node how would I configure my
compute nodes to send traffic out a specified port (

Here are my current configurations (mostly as default) on the compute node
quantum.conf http://pastebin.mozilla.org/3140225
ovs_quantum_plugin.ini http://pastebin.mozilla.org/3140226
IP -a http://pastebin.mozilla.org/3140257
root at hv1:~# ovs-vsctl show
    Bridge br-tun
        Port br-tun
            Interface br-tun
                type: internal
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
    Bridge br-int
        Port "int-br-eth0"
            Interface "int-br-eth0"
        Port "tap4de167c0-b3"
            Interface "tap4de167c0-b3"
        Port br-int
            Interface br-int
                type: internal
    Bridge "br-eth0"
        Port "br-eth0"
            Interface "br-eth0"
                type: internal
        Port "phy-br-eth0"
            Interface "phy-br-eth0"
        Port "eth0"
            Interface "eth0"
    ovs_version: "1.4.2"

Here's a log entry from booting an instance;
/var/log/quantum/openvswitch-agent.log http://pastebin.mozilla.org/3140153
/var/log/libvirt/libvirtd.log http://pastebin.mozilla.org/3140174

Thanks for any and all assistance.
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