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<div class="moz-cite-prefix">On 03/08/2013 05:16 AM, Dan Kenigsberg
wrote:<br>
</div>
<blockquote cite="mid:20130307211608.GD14400@redhat.com" type="cite">
<pre wrap="">On Thu, Mar 07, 2013 at 03:57:49PM +0100, Adrian Gibanel wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Just in case it might help you please check:
<a class="moz-txt-link-freetext" href="http://lists.ovirt.org/pipermail/users/2012-April/001751.html">http://lists.ovirt.org/pipermail/users/2012-April/001751.html</a>
</pre>
</blockquote>
<pre wrap="">
This is almost 1 year old, but I did not notice it yet. I love the
detailed solution!</pre>
</blockquote>
+1 on NAT network. Except that it can save ip address, it also
could reduce the external physical switch's pressure on mac table.
Because the VM's<br>
mac address is invisible to external switch. <br>
<br>
But there're two limitations of NAT network compared with physically
bridged network:<br>
1. The VMs attached to the same NAT network, but on different hosts
can't hear each other. It could be resolved by constructing a
tunnel or tunnels<br>
among the hosts in the same cluster and centralizing the mac
address management of dnsmasq on ovirt engine.<br>
<br>
2. The VMs in NAT network are hidden behind the host. The external
host can't initiate a connection to the VM. I think it's fine for a
desktop VM.\<br>
For a server VM, it can't be resolved by add a DNAT rule on demand.
It's similar to the 'floating ip address' in quantum.<br>
<br>
<em></em><em></em>
<blockquote cite="mid:20130307211608.GD14400@redhat.com" type="cite">
<pre wrap="">
Yes, the rant there, about ovirt network being tightly-coupled with a
physical interface, is 100% justified. I'm trying to address some of
that in <a class="moz-txt-link-freetext" href="http://www.ovirt.org/Features/Nicless_Network">http://www.ovirt.org/Features/Nicless_Network</a> but it's a long
way to go.
</pre>
<blockquote type="cite">
<pre wrap="">
I managed to implement Virtualbox-hostonly-alike networks gathering more info from:
<a class="moz-txt-link-freetext" href="http://libvirt.org/formatnetwork.html">http://libvirt.org/formatnetwork.html</a>
.
You might be also interested in: <a class="moz-txt-link-freetext" href="http://wiki.libvirt.org/page/Networking">http://wiki.libvirt.org/page/Networking</a> although I didn't use it myself.
You might probably already know this information but, just in case, here it is.
</pre>
</blockquote>
<pre wrap="">_______________________________________________
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</pre>
</blockquote>
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