yahoo-eng-team team mailing list archive

[Carl Baldwin <carl@xxxxxxxxxxxxx>]

I think we should do just enough of this for the fast exit rfe [1] and
leave the rest of this for another time.

[1] https://bugs.launchpad.net/neutron/+bug/1577488

** Changed in: neutron
       Status: Triaged => Won't Fix

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https://bugs.launchpad.net/bugs/1577572

Title:
  [RFE] Routing providers framework

Status in neutron:
  Won't Fix

Bug description:
  It would extremely helpful if Neutron were able to determine whether
  there is a mechanism operating on an external network that can handle
  advertising next-hops to upstream routers. "Fast-exit" DVR
  (https://bugs.launchpad.net/neutron/+bug/1577488) is an example of a
  use case where a framework for providing this information inside
  Neutron would be useful. With the Mitaka release BGP dynamic routing
  functionality was added to Neutron. BGP dyanmic routing exposes the
  concept of bindings between networks and BGP processes, which can
  provide the information described above. However, this is not a
  generic approach that supports other routing providers such as IPv6
  proxy ND, OSPF, or other routing technology. What is needed is a
  framework that allows Neutron to ask whether there is a mechanism
  operating on an external or provider network that is handling routing
  traffic.

  To this end I'm proposing the creation of a simple, yet generic
  framework in Neutron that allows any number of "routing providers" to
  be registered with Neutron. Each routing provider is able to answer
  the question "do you route to next-hops on network X?". Among other
  things, this answer allows fast-exit DVR to be enabled dynamically
  based on whether appropriate routing is in place without placing more
  config file burden on operators or having tenants set attributes on a
  router to get fast-exit treatment.

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