Re: [openstack-dev] [Networking] Support for multiple gateways in neutron/nova-net subnets for provider networks

2015-06-15 Thread Shraddha Pandhe
Hi Assaf, Kevin, I know we talked about this on IRC, but just want to close this question on the thread, for rest of the community. Yes, Assaf is correct. Either via DHCP or Config Drive, we will make sure that different VMs/baremetal nodes get different gateway addresses. On Fri, Jun 12,

Re: [openstack-dev] [Networking] Support for multiple gateways in neutron/nova-net subnets for provider networks

2015-06-12 Thread Shraddha Pandhe
Hi everyone, Any thoughts on supporting multiple gateway IPs for subnets? On Thu, Jun 11, 2015 at 3:34 PM, Shraddha Pandhe spandhe.openst...@gmail.com wrote: The idea is to round-robin between gateways by using some sort of mod operation So logically it can look something like:

Re: [openstack-dev] [Networking] Support for multiple gateways in neutron/nova-net subnets for provider networks

2015-06-12 Thread Assaf Muller
I think Shraddha was talking about the gateway IP the DHCP server will respond with. Different VMs will get different gateways. - Original Message - That logic is contained in the virtual machine. We have no control over that. On Thu, Jun 11, 2015 at 3:34 PM, Shraddha Pandhe

Re: [openstack-dev] [Networking] Support for multiple gateways in neutron/nova-net subnets for provider networks

2015-06-12 Thread Kevin Benton
That logic is contained in the virtual machine. We have no control over that. On Thu, Jun 11, 2015 at 3:34 PM, Shraddha Pandhe spandhe.openst...@gmail.com wrote: The idea is to round-robin between gateways by using some sort of mod operation So logically it can look something like:

Re: [openstack-dev] [Networking] Support for multiple gateways in neutron/nova-net subnets for provider networks

2015-06-11 Thread Kevin Benton
What gateway address do you give to regular clients via dhcp when you have multiple? On Jun 11, 2015 12:29 PM, Shraddha Pandhe spandhe.openst...@gmail.com wrote: Hi, Currently, the Subnets in Neutron and Nova-Network only support one gateway. For provider networks in large data centers, quite

Re: [openstack-dev] [Networking] Support for multiple gateways in neutron/nova-net subnets for provider networks

2015-06-11 Thread Shraddha Pandhe
The idea is to round-robin between gateways by using some sort of mod operation So logically it can look something like: idx = len(gateways) % ip gateway = gateways[idx] This is just one idea. I am open to more ideas. On Thu, Jun 11, 2015 at 3:10 PM, Kevin Benton blak...@gmail.com

[openstack-dev] [Networking] Support for multiple gateways in neutron/nova-net subnets for provider networks

2015-06-11 Thread Shraddha Pandhe
Hi, Currently, the Subnets in Neutron and Nova-Network only support one gateway. For provider networks in large data centers, quite often, the architecture is such a way that multiple gateways are configured per subnet. These multiple gateways are typically spread across backplanes so that the

[openstack-dev] [Networking] Support for multiple gateways in neutron/nova-net subnets for provider networks

2015-06-11 Thread Shraddha Pandhe
Hi, Currently, the Subnets in Neutron and Nova-Network only support one gateway. For provider networks in large data centers, quite often, the architecture is such a way that multiple gateways are configured per subnet. These multiple gateways are typically spread across backplanes so that the