Re: [Openstack-operators] Routed provider networks...

> We use provider networks to essentially take neutron-l3 out of the equation. > Generally they are shared on all compute hosts, but usually there aren't huge > numbers of computes. Hello, we have a datacenter completely L3, routing to the host. to implement the provider networks we are using

Re: [Openstack-operators] Routed provider networks...

On Mon, May 22, 2017 at 1:47 PM, Chris Marino wrote: > Hello operators, I will be talking about the new routed provider network > > features in OpenStack at a Meetup >

Re: [Openstack-operators] Routed provider networks...

Kevin, should have been more clear For the specific operator that is running L3 to host, with only a few /20 blocks...dynamic routing is absolutely necessary. The /16 scenario you describe is totally fine without it. CM On Tue, May 23, 2017 at 2:40 PM, Kevin Benton wrote: > >Dynamic

Re: [Openstack-operators] Routed provider networks...

>Dynamic routing is absolutely necessary, though. Large blocks of 1918 addresses are scarce, even inside the DC. I just described a 65 thousand VM topology and it used a /16. Dynamic routing is not necessary or even helpful in this scenario if you plan on ever running close to your max server dens

Re: [Openstack-operators] Routed provider networks...

On Mon, May 22, 2017 at 9:12 PM, Kevin Benton wrote: > The operators that were asking for the spec were using private IP space > and that is probably going to be the most common use case for routed > networks. Splitting a /21 up across the entire data center isn't really > something you would wan

Re: [Openstack-operators] Routed provider networks...

The operators that were asking for the spec were using private IP space and that is probably going to be the most common use case for routed networks. Splitting a /21 up across the entire data center isn't really something you would want to do because you would run out of IPs quickly like you menti

Re: [Openstack-operators] Routed provider networks...

Thanks Jon, very helpful. I think a more common use case for provider networks (in enterprise, AFAIK) is that they'd have a small number of /20 or /21 networks (VLANs) that they would trunk to all hosts. The /21s are part of the larger datacenter network with segment firewalls and access to other

Re: [Openstack-operators] Routed provider networks...

Not sure if this is what you're looking for but... For my private cloud in research environment we have a public provider network available to all projects. This is externally routed and has basically been in the same config since Folsom (currently we're upto Mitaka). It provides public ipv4 ad

[Openstack-operators] Routed provider networks...

Hello operators, I will be talking about the new routed provider network features in OpenStack at a Meetup next week and would like to get a better sense of how provid