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[zhaobo <zhaobo6@xxxxxxxxxx>]

Public bug reported:

In real data center, it may contains several external gateways to access
external network. The VM instances can access all of them in L3 layer.
Each gateway may from different network providers, and different network
performance(such as stability, bandwidth, speed). Cloud admin may want
to make the VM in the specified subent of network to routing the traffic
to the site which own the best connection line. But the others traffic
pass through the original gateway. So we need to route the specified
traffic to other gateway.

For openstack, neutron. That means policy routing based on subnet. Each
subnet has individual route table, each subnet may have different
nexthop for support more flexible routing. Then the user of tenant may
have 1 network, and several subnets in it. But a part of subnets may
need to access Internal network only for working in company, the other
need to access Internet.

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1715386

Title:
  [RFE]Support policy routing based on subnet

Status in neutron:
  New

Bug description:
  In real data center, it may contains several external gateways to
  access external network. The VM instances can access all of them in L3
  layer. Each gateway may from different network providers, and
  different network performance(such as stability, bandwidth, speed).
  Cloud admin may want to make the VM in the specified subent of network
  to routing the traffic to the site which own the best connection line.
  But the others traffic pass through the original gateway. So we need
  to route the specified traffic to other gateway.

  For openstack, neutron. That means policy routing based on subnet.
  Each subnet has individual route table, each subnet may have different
  nexthop for support more flexible routing. Then the user of tenant may
  have 1 network, and several subnets in it. But a part of subnets may
  need to access Internal network only for working in company, the other
  need to access Internet.

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