two tenants with same subnet

asked 2015-09-27 07:44:02 -0500

br gravatar image

I came to know that "openstack allows two tenants can have same subnet without any overlap with the concept of namespace".

so can vm1, vm2 have same ip like as below?

Tenant1 : VM1 =>

Tenant2 : VM2 =>

If yes how i can ping vm2 from vm11?

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answered 2015-09-27 20:18:02 -0500

fgorbat gravatar image

updated 2015-10-02 08:14:16 -0500

I guess you have to look in to VPN solution. Moreover, you have to use two separate vlans.

Here is interesting article with step by step instruction:

Good luck!

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answered 2015-09-28 00:56:02 -0500

soumitrakarmakar gravatar image

updated 2015-09-28 01:37:52 -0500

You can add floating IP's to ping each other, other than that if you want to ping you need to setup vpn, else it doesn't matter even if you give same subnet among multiple projects as they are internal IP's and limited to their project only.

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answered 2015-10-06 05:20:47 -0500

rozie gravatar image

You probably found it in some place which describes separate networks, routers etc. for each tenant (please provide URL, context matters here). If so, two tenants can have VMs with the same addresses, but they will not belong to the same subnet. Don't let the same addressation mislead you - these are separate networks. Consider two routers in company, each having the same prefix and performing NAT.

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Asked: 2015-09-27 07:44:02 -0500

Seen: 693 times

Last updated: Oct 06 '15