On 19 May 2017 at 14:54, Clark Boylan <cboy...@sapwetik.org> wrote: > On Fri, May 19, 2017, at 02:03 PM, Kevin Benton wrote: > > I split this conversation off of the "Is the pendulum swinging on PaaS > > layers?" thread [1] to discuss some improvements we can make to Neutron > > to > > make orchestration easier. > > > > There are some pain points that heat has when working with the Neutron > > API. > > I would like to get them converted into requests for enhancements in > > Neutron so the wider community is aware of them. > > > > Starting with the port/subnet/network relationship - it's important to > > understand that IP addresses are not required on a port. > > > > >So knowing now that a Network is a layer-2 network segment and a Subnet > > is... effectively a glorified DHCP address pool > > > > Yes, a Subnet controls IP address allocation as well as setting up > > routing > > for routers, which is why routers reference subnets instead of networks > > (different routers can route for different subnets on the same network). > > It > > essentially dictates things related to L3 addressing and provides > > information for L3 reachability. > > One thing that is odd about this is when creating a router you specify > the gateway information using a network which is l2 not l3. Seems like > it would be more correct to use a subnet rather than a network there? >
I think this is due the way external networks ended up being modeled in neutron. I suppose we could have allowed the user to specify a subnet, so long that it fell in the bucket of subnets that belong to a router:external network. > > Clark > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev >
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