Not able to create external physical network

[Darko]

Hello Team,

I am trying to create new physical external network, however that fails with the message:
"Error while executing command: ConflictException: 409, Unable to create the flat network. Physical network physnet1 is in use.".

This is how i try to create it :

``openstack network create --provider-physical-network physnet1 --provider-network-type flat --external public``

I attached same command with debug flag. I dont have any networks created at the moment.

``(control1-oslab1-office) # openstack network list
  (control1-oslab1-office) # openstack port list
``
Other config files that might be relevant:

cat ml2_conf.ini
[DEFAULT]
[ml2]
type_drivers = vlan,flat
extension_drivers = port_security,dns_domain_ports
tenant_network_types =
mechanism_drivers = openvswitch,linuxbridge,l2population
[ml2_type_vlan]
network_vlan_ranges = br-int:10:20
[securitygroup]
enable_ipset = true
[ml2_type_flat]
flat_networks = physnet1

cat openvswitch_agent.ini
[ovs]
bridge_mappings = physnet1:br-ex

[James Denton (james-denton)]

One issue may be that a flat network already exists using physnet1. You only get one flat network per provider interface.

Another issue I see is that 'network_vlan_ranges' may be setup incorrectly. The bridge br-int is used for overlay purposes. The 'network_vlan_ranges' configuration should be <provider interface>:<vlan start>:<vlan end>.

Example:
network_vlan_ranges = physnet1:10:20

[Rodolfo Alonso (rodolfo-alonso-hernandez)]

That's weird, are you sure that you don't have any network in your environment (specifically a flat network using "physnet1")? Can you check using an admin user or directly on the database?

[Launchpad Janitor (janitor)]

[Expired for neutron because there has been no activity for 60 days.]