Open Stack

Nova assumes that the cloud operator will want to separate the VMs from the physical infrastructure.... So the address range on the physical nodes and VM are 'Foreign' to each other. For VMs to be able to communicate with the outside world in this environment, snat is required.
There's no real way in Essex to disable that.

Why do you want to avoid NAT?

On Aug 31, 2012, at 2:37, Igor Laskovy <igor.laskovy at gmail.com> wrote:

> Hey.
> 
> Well, what the type of network manager used?
> For example with FlatManager virtual nic can only put in the according bridge on the node and that's it. Anything you should do manually.
> 
> Igor Laskovy
> facebook.com/igor.laskovy
> Kiev, Ukraine
> 
> On Aug 30, 2012 2:24 PM, "Sergio Ariel de la Campa Saiz" <sacampa at gmv.com> wrote:
> Hi:
> 
>  
> 
> I have a doubt about nova-network and NAT:  
> 
> UVirtual machines (that only have privates IPs and no floating IP) always use NAT to communicate with machines out of OpenStack cloud?
> 
>  
> 
> Regards…  
> 
>  
> 
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> Sergio Ariel de la Campa Saiz
> Ingeniero de Infraestructuras /
> 
> Infrastucture Engineer /
> 
> GMV 
> Isaac Newton, 11
> P.T.M. Tres Cantos
> E-28760 Madrid
> Tel. +34 91 807 21 00
> Fax +34 91 807 21 99 
> www.gmv.com
> 
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