[RFE] bgp-route-aggregation

[vikram.choudhary]

[Existing problem]
Current BGP dynamic routing proposal [1]_ doesn't have support for route aggregation. Route aggregation could be extremely useful in reducing the size of the routing table and improves CPU utilization [2]_.

[Proposal]
- Add route-aggregation support to BGP dynamic routing.

[Benefits]
- Route aggregation is good as it reduces the size, and slows the growth, of the Internet routing table.
- Amount of resources (e.g., CPU and memory) required to process routing information is reduced and route calculation is sped up.
- Route flaps becomes limited in number

[What is the enhancement?]
- - Additional API, CLI and DB model will be added.

[Related information]
[1] Dynamic Advertising Routes for Public Ranges
    https://specs.openstack.org/openstack/neutron-specs/specs/mitaka/bgp-dynamic-routing.html
[2] A Framework for Inter-Domain Route Aggregation
    https://tools.ietf.org/html/rfc2519

[Akihiro Motoki (amotoki)]

The feature which this RFE depends on is not yet implemented.
It is valid as a feature request, but the requested feature can be implemented during the current proposed implementation.

[Akihiro Motoki (amotoki)]

We need to revisit this after BGP-DR blueprint completes.

[Armando Migliaccio (armando-migliaccio)]

Thanks for the update. I think it's fair to say that until [1] is feature complete (blueprints implemented - i.e. basic code, tests, docs), bugs [2-7] are blocked. My suggestion would be to go and yell/help the assignee/approver of [1] and make sure that the work can complete successfully asap so that we can start focusing on 2-7 knowing on what grounds we can continue building.

[1] https://blueprints.launchpad.net/neutron/+spec/bgp-dynamic-routing
[2] https://bugs.launchpad.net/neutron/+bug/1509431
[3] https://bugs.launchpad.net/neutron/+bug/1509436
[4] https://bugs.launchpad.net/neutron/+bug/1527993
[5] https://bugs.launchpad.net/neutron/+bug/1528000
[6] https://bugs.launchpad.net/neutron/+bug/1528002
[7] https://bugs.launchpad.net/neutron/+bug/1528003

[Carl Baldwin (carl-baldwin)]

This should be considered with Host Aware IPAM [1]

[1] https://bugs.launchpad.net/neutron/+bug/1540512

[vikram.choudhary (vikschw)]

Let's wait for driver's team confirmation..

[Ryan Tidwell (ryan-tidwell)]

This will become more of a priority when DVR can route for a local fixed IP and we start sending announcements for each fixed IP. I think there is a host-aware IPAM component to this as well

[Armando Migliaccio (armando-migliaccio)]

Assumed that by the end of Newton (or sooner if possible) the BGP repo is up and running and rock solid based on the efforts put into Mitaka, I see no reason why these requests should not be vetted and addressed by the BGP team directly. So please make a recommendation.

[Rodolfo Alonso (rodolfo-alonso-hernandez)]

Bug closed due to lack of activity, please feel free to reopen if needed.