<div dir="ltr"><div class="gmail_default" style="font-family:georgia,serif">Hi Miguel,</div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif">
Within the same subnet, which is an Fixed IP segments, VM1 and VM2 can exchange packets directly referenced by their Fixed IPs via tunnel between PM1 and PM2.</div><div class="gmail_default" style="font-family:georgia,serif">
<br></div><div class="gmail_default" style="font-family:georgia,serif">If you are using Floating IP addresses to traverse packets between VMs, then the NAT translation happens on Network Node by l3-agent. </div><div class="gmail_extra">
<br clear="all"><div><div dir="ltr"><i style="font-family:georgia,serif;background-color:rgb(255,255,255);color:rgb(192,192,192)">Best Regards,<br>Xiaolin Zhang</i></div></div>
<br><br><div class="gmail_quote">On Tue, Jan 28, 2014 at 5:09 PM, Miguel A Diaz Corchero <span dir="ltr"><<a href="mailto:miguelangel.diaz@externos.ciemat.es" target="_blank">miguelangel.diaz@externos.ciemat.es</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
Hi<br>
<br>
Regarding this schema of Neutron [1], could you confirm which packet
flow is the correct? <br>
<br>
We are considering that a virtual machine (VM1) sends packets to
VM2, but both VMs are located in different compute nodes (PM1 and
PM2). Both VMs are in the same virtual network.<br>
Which is the flow, a or b?<br>
<br>
a) VM1 -> PM1 -> Networking node -> PM2 -> VM2<br>
b) VM1 -> PM1 -> PM2 -> VM2<br>
<br>
Thanks <br>
Miguel.<br>
<br>
[1]
<a href="http://docs.openstack.org/havana/install-guide/install/apt/content/section_networking-provider-router_with-provate-networks.html" target="_blank">http://docs.openstack.org/havana/install-guide/install/apt/content/section_networking-provider-router_with-provate-networks.html</a><span class="HOEnZb"><font color="#888888"><br>
<div>-- <br>
<i><font><span style><span style="font-family:Century Gothic,sans-serif,10">Miguel
Angel Díaz Corchero</span></span></font></i><font><br>
<i><b><span style="font-family:Century Gothic,sans-serif">System
Administrator / Researcher</span></b></i><br>
<i><span style="font-family:Century Gothic,sans-serif">c/ Sola
nº 1; 10200 TRUJILLO, SPAIN</span></i><br>
<i><span style="font-family:Century Gothic,sans-serif">Tel: +34
927 65 93 17 Fax: <a href="tel:%2B34%20927%2032%2032%2037" value="+34927323237" target="_blank">+34 927 32 32 37</a></span></i>
<p><span><a href="http://www.ceta-ciemat.es/" target="_blank"><img src="cid:part1.03060800.04070908@externos.ciemat.es" alt="CETA-Ciemat logo" height="76" border="0" width="383"></a></span></p>
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