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Can we have multiple subnets on a neutron network?

asked 2016-07-27 22:26:36 -0600

kramer gravatar image


I try to create two subnets under same neutron network. The network type is VLAN.

Neutron let me to do so. But when creating VM on the network. There is no way to specify the subnet. You can only specify the network ID.

So I want to know what is the use case of multiple subnets of one network?

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answered 2016-07-28 13:55:11 -0600

darragh-oreilly gravatar image

Yes you can. The common use case is dual-stack IPv4+IPv6.

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answered 2016-07-28 13:31:11 -0600

When creating a VM on a network with multiple subnets, you can specify the subnet that the VM attaches to by using the v4-fixed-ip option after the net-id. If these subnets are attached to the same router, VMs on each subnet can communicate with each other, but offer broadcast domain isolation within each subnet. If these subnets are attached to different routers, then the VMs are isolated from each other.

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answered 2016-09-28 00:58:41 -0600

Sudhin gravatar image


You can have multiple subnets in a neutron network. It is easy to create it in your horizon dashboard.

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Asked: 2016-07-27 22:26:36 -0600

Seen: 2,471 times

Last updated: Sep 28 '16