[Openstack] Help with quantum/neutron provider networks (transition from nova-network)

Robert Collins robertc at robertcollins.net
Sun Aug 11 22:31:31 UTC 2013

You need to connect the exterior network to the integration bridge
yourself. This is in the deployer docs somewhere, I don't recall
offhand - sorry.


On 12 August 2013 06:26, Jonathan Proulx <jon at jonproulx.com> wrote:
> Bad form to self-reply but it's off hours for most and this is probably
> useful new information..
> the vm's tap device on the compute node is being put in the bridge "int-br",
> if I remove it and put in the "trunk" bridge with the correct tag it works
> as I want:
> root at nova-0:~# ovs-vsctl del-port br-int tapd2799dad-27
> root at nova-0:~# ovs-vsctl add-port trunk tapd2799dad-27 tag=2113
> This what I wanted to happen but clearly I have something confused, can
> quantum/neutron do this & if so how do I tell it to?
> On Sun, Aug 11, 2013 at 8:07 AM, Jonathan Proulx <jon at jonproulx.com> wrote:
>> HI All,
>> My maintenance window is closing and I haven't yet managed the transition
>> I planned from nova-network to quantum/neutron with ovs plugin.  Using
>> Ubuntu 12.04 Cloud archive packages (and puppetlabs openstack modules,
>> though I had the same results by hand so likely confusion on my part rather
>> than a typo)
>> I want to create a provider network that plugs instances directly into an
>> existing vlan which already has a router, dhcp (and other non-openstack)
>> hosts.  Previously this is where nova-network got it's "floating ip" ranges.
>> I have interfaces on compute nodes and network controller with this vlan
>> trunked, also their public IPs are on this vlan so they have another
>> interface i could use to provide "flat" access, but I'd rather go vlan as I
>> have other nets I want to implement too.
>> I created the network with:
>> quantum net-create public-inet --shared --provider:network_type vlan
>> --provider:physical_network trunk --provider:segmentation_id 2113
>> on network controller and compute node 'ovs-vsctl list-ifaces trunk' shows
>> a single physical interface as a member (bond0, and eth1 respectively) these
>> interfaces are up and are the ones with trunks defined on the attached
>> switch.  Neither has an IP addr (though bond0.2113 on the controller is the
>> primary public interface, perhaps this is an issue?) an other possible issue
>> is that this is jumbo frames network so I need to set MTU...but I expect
>> that problem comes after the current one.
>> in the config I have set:
>> bridge_mappings=trunk:<bond0|eth1>-br
>> should I have not set them to
>> when I launch an instance with this network it does get an interface but
>> is seems not to be connected to the outside.
>> the quantum-server log complains:
>> 2013-08-11 07:32:30  WARNING [quantum.db.agentschedulers_db] Fail
>> scheduling network {'status': u'ACTIVE', 'subnets':
>> [u'7dd56379-90f5-4c79-b127-954c0fcbdca1'], 'name': u'public-inet',
>> 'provider:physical_network': u'trunk', 'admin_state_up': True, 'tenant_id':
>> u'6f9adccbd03e4d2186756896957a14bf', 'provider:network_type': u'vlan',
>> 'router:external': False, 'shared': True, 'id':
>> u'2c3ee609-ff51-4650-8541-737b0ca72f0c', 'provider:segmentation_id': 2113L}
>> The compute node shows
>> 2013-08-11 07:32:30     INFO [quantum.agent.securitygroups_rpc] Security
>> group member updated [u'e4ad30f9-e50b-49fc-9d81-26c875ac15b8',
>> u'e5209cd6-b881-4633-b955-fdde1fefea58']
>> 2013-08-11 07:32:39     INFO [quantum.agent.securitygroups_rpc] Preparing
>> filters for devices set(['96555a4a-d6c1-4c8a-a65e-31317370c08d'])
>> 2013-08-11 07:32:40     INFO
>> [quantum.plugins.openvswitch.agent.ovs_quantum_agent] Port
>> 96555a4a-d6c1-4c8a-a65e-31317370c08d added
>> 2013-08-11 07:32:40     INFO
>> [quantum.plugins.openvswitch.agent.ovs_quantum_agent] Port
>> 96555a4a-d6c1-4c8a-a65e-31317370c08d updated. Details: {u'admin_state_up':
>> True, u'network_id': u'2c3ee609-ff51-4650-8541-737b0ca72f0c',
>> u'segmentation_id': 2113, u'physical_network': u'trunk', u'device':
>> u'96555a4a-d6c1-4c8a-a65e-31317370c08d', u'port_id':
>> u'96555a4a-d6c1-4c8a-a65e-31317370c08d', u'network_type': u'vlan'}
>> 2013-08-11 07:32:40     INFO
>> [quantum.plugins.openvswitch.agent.ovs_quantum_agent] Assigning 5 as local
>> vlan for net-id=2c3ee609-ff51-4650-8541-737b0ca72f0c
>> Can anyone see what I'm misunderstanding?
>> Thanks,
>> -Jon
> _______________________________________________
> Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> Post to     : openstack at lists.openstack.org
> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack

Robert Collins <rbtcollins at hp.com>
Distinguished Technologist
HP Converged Cloud

More information about the Openstack mailing list