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Can you have more than one network with the same ip?

asked 2018-09-15 05:15:58 -0500

anonymous user


For example in project 1 to have a network and in project 2 to have a network Would you give problems in the future?

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answered 2018-09-15 06:40:40 -0500

Overlapping IP address ranges are a feature of Neutron. The idea is that projects are independent of each other and have full control over their networks without checking what other projects are doing.

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answered 2018-09-18 08:16:45 -0500

Mohit gravatar image

Yes it is possible , also check the configuration key allow_overlapping_ips in neutron.conf file

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answered 2018-09-19 17:15:30 -0500

Not only can you have overlapping IP ranges in separate projects, but you can have overlapping ip ranges in the same project.
The limitation is, VMs that live on the different but identically addressed subnets will be unable to route traffic to each other by way of their internal IP address, because the VM will expect to be able to ARP and for reach the destination on its own local network subnet. This limitation also applies to VMs in different projects if you ever want to create a path between the projects by way of an RBAC shared network. This can be worked around by using FIPs on the source and destination VM for the communication path. However, that will require special consideration with regard to security groups, and will also cause the traffic to hairpin through your gateways (depending on your particular SDN setup).

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Asked: 2018-09-15 05:15:58 -0500

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Last updated: Sep 18 '18