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BGP dynamic routing


At the moment neutron-dynamic-routing does not support receiving routes
from its peers. If you look at the code, you'll see that the BGP will
handle any route updates it gets from a peer by simply invoking a no-op
routine that logs an info message [1]. You're not the first one to ask the
question, so if you can express a solid use case I think an RFE could be
crafted to support you. I just haven't seen the use case expressed by
anyone yet, but that's not to say it doesn't exist.

-Ryan Tidwell

[1]
https://github.com/openstack/neutron-dynamic-routing/blob/master/neutron_dynamic_routing/services/bgp/agent/driver/os_ken/driver.py#L40

On Mon, Nov 4, 2019 at 10:38 AM Donny Davis <donny at fortnebula.com> wrote:

> To be honest I only use it for the use case I listed before, so beyond
> that I am not going to be much help.
>
> However.. they are both speaking bgp I would imagine that it works the
> same way as any bgp instance.
>
> Give it a whirl and let us know how it works out. :)
>
> On Mon, Nov 4, 2019 at 11:28 AM Volodymyr Litovka <doka.ua at gmx.com> wrote:
>
>> Hi Donny,
>>
>> the question if I have few peers to few PoPs, everyone with own set of
>> prefixes and need to import these external prefixes INTO the tenant.
>>
>>
>> On 04.11.2019 17:08, Donny Davis wrote:
>>
>> The way I use it is to dynamically advertise my tenant networks to the
>> edge. The edge router still handles routes in the rest of my infra.
>>
>> Works pretty well for me.
>>
>> Donny Davis
>> c: 805 814 6800
>>
>> On Mon, Nov 4, 2019, 6:52 AM Volodymyr Litovka <doka.ua at gmx.com> wrote:
>>
>>> Dear colleagues,
>>>
>>> "BGP dynamic routing" doc
>>> (
>>> https://docs.openstack.org/neutron/rocky/admin/config-bgp-dynamic-routing.html
>>> )
>>> says only about advertisement of routes: "BGP dynamic routing enables
>>> advertisement of self-service (private) network prefixes to physical
>>> network devices that support BGP such as routers, thus removing the
>>> conventional dependency on static routes." and nothing about receiving
>>> of routes from external peers.
>>>
>>> Whether it is ever possible using Neutron to have fully dynamic routing
>>> inside the project, both advertising/receiving (and updating VRs
>>> configuration) routes to/from remote peers?
>>>
>>> Thank you.
>>>
>>> --
>>> Volodymyr Litovka
>>>    "Vision without Execution is Hallucination." -- Thomas Edison
>>>
>>>
>>>
>> --
>> Volodymyr Litovka
>>   "Vision without Execution is Hallucination." -- Thomas Edison
>>
>>
>
> --
> ~/DonnyD
> C: 805 814 6800
> "No mission too difficult. No sacrifice too great. Duty First"
>
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