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To more precise, the kernel will listen on udp port 8472 as soon as
you create a vxlan port, with ip_route2. I doubt it's your case, but i
can't figure out why you want to change the vxlan port? please tell us
about that, it could be interesting.

In your case, your config doesn't seem to be a multi-node one, so you
will have only one vxlan endpoint, which hosts network node and
compute node. If this is right, it's normal that no vxlan tunnel is
created, since you don't have any other vxlan endpoint.


On Wed, Feb 26, 2014 at 11:38 AM, Mathieu Rohon <mathieu.rohon at gmail.com> wrote:
> Hi,
>
> FYI setting the vxlan UDP doesn't work properly for the moment :
> https://bugs.launchpad.net/neutron/+bug/1241561
>
> May be your kernel has the vxlan module already loaded, which bind the
> udp port 8472. that a reason why the vxlan port can't be created by
> ovs. Check your ovs-vswitchd.log
>
> On Tue, Feb 25, 2014 at 10:08 PM, Varadhan, Sowmini
> <sowmini.varadhan at hp.com> wrote:
>> Folks,
>>
>> I'm trying to set up a simple single-node devstack + ml2 + vxlan
>> combination, and though this ought to be a simple RTFM exercise,
>> I'm having some trouble setting this up. Perhaps I'm doing something
>> wrong- clues would be welcome.
>>
>> I made sure to use ovs_version 1.10.2, and followed
>> the instructions in https://wiki.openstack.org/wiki/Neutron/ML2
>> (and then some, based on various and sundry blogs that google found)
>>
>> Can someone share (all) the contents of their localrc,
>> and if possible, a description of their VM (virtualbox?  qemu-kvm?)
>> setup so that I can compare against my env?
>>
>> FWIW, I tried the attached configs.
>> localrc.all - sets up
>>     Q_PLUGIN=ml2
>>     Q_ML2_TENANT_NETWORK_TYPE=vxlan
>>     Q_AGENT_EXTRA_AGENT_OPTS=(tunnel_type=vxlan vxlan_udp_port=8472)
>>     Q_SRV_EXTRA_OPTS=(tenant_network_type=vxlan)
>> Resulting VM boots, but no vxlan interfaces show up (see ovs-ctl.out.all)
>>
>> localrc.vxlan.only - disallow anything other than vxlan and gre.
>> VM does not boot- I get a "binding_failed" error. See ovs-ctl.out.vxlan.only
>>
>> Thanks in advance,
>> Sowmini
>>
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