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Hi Simon,
Please check you neuron server configuration.
To support VXLAN networks, you should have the following configuration in the ml2_conf.ini:

[ml2]
type_drivers = vxlan,local
tenant_network_types = vxlan
mechanism_drivers = openvswitch

[ml2_type_vxlan]
vni_ranges = 65537:69999

For the rest of the configuration, you can check the reference at http://www.opencloudblog.com/?p=300

Regards,
Irena

From: Xu (Simon) Chen [mailto:xchenum at gmail.com]
Sent: Thursday, October 02, 2014 6:47 PM
To: openstack at lists.openstack.org
Subject: [Openstack] [openstack][neutron] ml2 network creation question

Hey folks,

I was using vanilla openvswitch plugin and upgraded to ML2 recently. My existing networks work fine, but new networks are causing me troubles.

It seems that a new network defaults provider:network_type to "local". Since I am running openvswitch agents with network_type set to VXLAN only everywhere, all ports are down in this setup.

So, I tried to create a network and specify provider:network_type to vxlan (which is the case for my existing networks). This time, the network cannot be created at all, got an error of NoNetworkAvailable: Unable to create the network.

Any ideas?

Thanks.
-Simon
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