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

2017-05-26 Thread Saverio Proto
> 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...

2017-05-23 Thread Curtis
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...

2017-05-23 Thread Chris Marino
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

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

2017-05-23 Thread Kevin Benton
>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

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

2017-05-23 Thread Chris Marino
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 >