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The information you found in the guide you mentioned indicate you want to
use br-eth1 as the uplink for the VMs attached to your network.
However, creating br-eth1 (or whatever is the name of the bridge) is beyond
the scope of Quantum. It is up to who deploys Quantum configure
connectivity on the host appropriately.

Dan's instruction will indeed allow you to create br-eth1, and plug eth1 to
it - this will allow all your vms traffic to be uplinked through that
interface.

Regards,
Salvatore

On 17 October 2012 22:10, Srikanth Kumar Lingala <
srikanthkumar.lingala at gmail.com> wrote:

> Hi Dan,
> I am following Folsom Installation guide provided by Emilien Macchi. In
> that document it is mentioned to create a bridge 'br-int' attached to
> 'eth1' through ovs. And also it suggests to assign this '*br-int*' bridge
> as '*integration_bridge*' and '*br-eth1*' as '*bridge_mappings*' in
> '/etc/quantum/plugins/openvswitch/ovs_quantum_plugin.ini' like the
> following:
>
> *integration_bridge = br-int*
> *bridge_mappings = default:br-eth1*
> *
> *
> Please clarify me, is it necessary to enable 'bridge_mappings' field.
> *
> *
> Regards,
> Srikanth.
>
> On Wed, Oct 17, 2012 at 10:13 PM, Dan Wendlandt <dan at nicira.com> wrote:
>
>> It sounds like your config file is saying that you have an OVS bridge
>> named "br-eth1", but it looks like you do not.
>>
>> Did you intend to do this, or is this a config copied from somewhere else?
>>
>> If you actually intended to use VLANs that send traffic out eth1, you
>> can do the following:
>>
>> # create bridge
>> ovs-vsctl add-br br-eth1
>>
>> # add eth1 as a port on this bridge
>> ovs-vsctl add-port br-eth1 eth1
>>
>> dan
>>
>> On Wed, Oct 17, 2012 at 1:53 AM, Srikanth Kumar Lingala
>> <srikanthkumar.lingala at gmail.com> wrote:
>> > Hi all,
>> > If we run Quantum OVS Agent as a service ... 'service
>> > quantum-plugin-openvswitch-agent start', it is unable to start the
>> agent. It
>> > is throwing the following error to '/var/log/quantum/agent-ovs.log'
>> >
>> > Stderr: 'Device "br-eth1" does not exist.\n'
>> > 2012-10-16 12:48:10    ERROR
>> > [quantum.plugins.openvswitch.agent.ovs_quantum_agent] Bridge br-eth1 for
>> > physical network default does not exist
>> >
>> > if we run the agent manually like the following command, it is able to
>> > start:
>> >
>> > /usr/bin/quantum-openvswitch-agent --
>> > --config-file=/etc/quantum/plugins/openvswitch/ovs_quantum_plugin.ini
>> > --log-file=/var/log/quantum/agent-ovs.log
>> > --config-file=/etc/quantum/quantum.conf
>> >
>> > Please suggest.
>> > --
>> > ----
>> > Srikanth.
>> >
>> >
>> >
>> > _______________________________________________
>> > Mailing list: https://launchpad.net/~openstack
>> > Post to     : openstack at lists.launchpad.net
>> > Unsubscribe : https://launchpad.net/~openstack
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>> >
>>
>>
>>
>> --
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> Dan Wendlandt
>> Nicira, Inc: www.nicira.com
>> twitter: danwendlandt
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>
>
> _______________________________________________
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