Replying to my own message is bad form but you should also consider that they have different rules, so not only is there not a numbering conflict, there is not a routing conflict either. As your 192.168.100.0/22 is in the private IP space, some additional rules (or exceptions) may need to be added to the neutron router (but I suspect it doesn't really care if your provider net is RFC 1918 or not.
On Sat, Jun 4, 2016 at 11:59 AM, David Medberry <openst...@medberry.net> wrote: > Of course, there are almost always two routers on a subnet... (unless it > is the end of the line). What makes you think the neutron router has to be > at .1? Mine are typically .1 on the VM side (but it is totally fine to use > something else) and not .1 on the provider side. > > On Fri, Jun 3, 2016 at 12:47 PM, John van Ommen <john.vanom...@gmail.com> > wrote: > >> Let's say I have two networks. One network is 10.241.0.1/24, and my >> VMs are on that network. The other network is a provider network with >> a CIDR of 192.168.100.0/22. >> >> There's an illustration of what I mean here: >> >> https://developer.rackspace.com/blog/neutron-networking-l3-agent/ >> >> Okay, so here's my question: >> There's a router between the two networks. Is the routing being done >> by a *physical* router, or by a *neutron* router? >> >> >> Here's the reason that I ask: >> When I set these networks up, I generally set up a neutron router >> between the first network and the second network. But in my current >> project, there's a physical router at 192.168.100.1. So it seems like >> my Neutron router would be in conflict with the physical router at >> 192.168.100.1. >> >> IE, I can't have two routers running on the same subnet. Or am I >> missing something? >> >> _______________________________________________ >> Mailing list: >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> Post to : openstack@lists.openstack.org >> Unsubscribe : >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> > >
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