Thanks.  This definitely helps.

Sent from my iPhone

> On May 2, 2016, at 9:27 PM, Aqsa Malik <aqs...@gmail.com> wrote:
> 
> This is by design in OpenStack. A VM can't access the external network unless 
> assigned a floating IP.
> Each private network exists behind the router and access to external networks 
> all happens via SNAT or Floating IPs. Each router uplink and floating IP is 
> allocated from the external network subnet.
> Just as an add on,  Hosts without floating IPs can still create outbound 
> connections to the external network, as the provider router performs SNAT to 
> the router's external IP. The IP address of the physical router is used as 
> the gateway_ip of the external network subnet, so the provider has a default 
> router for Internet traffic.
> The internal network is for traffic between virtual machines in OpenStack, 
> and between the virtual machines and the network nodes that provide l3 routes 
> out to the public network (and floating IPs for connections back in to the 
> VMs).
> I hope this helps.
> 
>> On Tue, May 3, 2016 at 8:32 AM, Jagga Soorma <jagg...@gmail.com> wrote:
>> Hi Guys,
>> 
>> Need some clarification regarding routing for instances without a floating 
>> ip address. Basically we have instances connected to a priv network that is 
>> also connected to our external network and our security group allows all 
>> egress traffic. However, we can't seem to get to any resource on our 
>> external network till a floating ip address is assigned. Once we assign a 
>> floating ip address we can get out.  Is that by design or is there something 
>> wrong with our configuration?
>> 
>> Thanks.
>> 
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> 
> 
> 
> -- 
> Aqsa Malik
> Military College of Signals NUST
> 
> visit my blog at
> http://www.techiworld4u.blogspot.com
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