Open Stack

Sorry for brief reply, I'm on mobile

external_network_bridge is supposed to point to a bridge such as br-ex
which is manually created, not a physical Ethernet device
On Wed, Sep 2, 2015 at 1:50 AM Michael Gale <gale.michael at gmail.com> wrote:

> Hello,
>
>     I am running the Kilo release using os-ansible-deployment and have a
> functioning OpenStack installation using VXLANs however I am running into
> an issue adding an external network.
>
> From the Horizon interface I can create private tenant networks without an
> issue and I have created an external network:
> - Subnet 1.2.10.0/24
> - GW 1.2.10.1
> - VXLAN ID: 999
>
> Inside OpenStack the instances can access each other and the public IP's
> that exist on the external subnet however they can not access the external
> subnet gateway which exist outside of OpenStack.
>
> On the neutron agent node where I have the neutron L3 agent:
> - I can see my external network interface (eth11) and it is working
> - I can see a bridge device that has a VXLAN ID interface attached that
> matches my external network plus 2 tap devices
>
> If I check the network namespace I find a router exists with ports,
> routers, etc and matches the Horizon Network Topology graph.
>
> Now from my understanding I need to update /etc/neutron/l3_agent.ini and
> set my external interface and that neutron will automatically add that
> interface to the router when it is marked as external:
> external_network_bridge = eth11
>
> However that did not work, I was able to make it work by adding eth11 to
> the bridge interface that got created:
>
> *Neutron Node - Before change*
> --snip--
> bridge name     bridge id               STP enabled     interfaces
> brq321e79ee-60          8000.629228307545       no
>  tap69cab170-04
>                                                         vxlan-77
> brqd8c6a159-03          8000.16ed469b44d8       no
>  tap83dc2c50-ef
>                                                         vxlan-999
>
> --snip--
>
> *Neutron Node - After change*
> --snip--
> bridge name     bridge id               STP enabled     interfaces
> brq321e79ee-60          8000.9225a6292c5c       no
>  tap277296ef-97
>                                                         tape55e2167-98
>                                                         vxlan-77
> brqd8c6a159-03          8000.00163ee12e11       no              eth11
>                                                         tap124723f9-2e
>                                                         tap5f9dc7ba-d6
>                                                         vxlan-999
>
> --snip--
>
>
> Obviously I am missing something, any help is appreciated.
>
>
> Thanks
> Michael
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