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    Can you put them to different vlans? After that it would be very
    easy task.<br>
    <br>
    If not, AFAIK, neutron does not allow this. <br>
    <br>
    Or you can trick it thinking it is (are) separate networks.<br>
    <br>
    Create brige (br-join), plug eth to it.<br>
    Create to fake external bridges (br-ex1, br-ex2). Join them together
    to br-join by patch links
(<a class="moz-txt-link-freetext" href="http://blog.scottlowe.org/2012/11/27/connecting-ovs-bridges-with-patch-ports/">http://blog.scottlowe.org/2012/11/27/connecting-ovs-bridges-with-patch-ports/</a>)<br>
    <br>
    Instruct neutron like there is two external networks: one on br-ex1,
    second on br-ex2.<br>
    <br>
    But be alert that this not very stable configuration, you need to
    maintain it by yourself.<br>
    <br>
    <div class="moz-cite-prefix">On 04/25/2015 10:13 PM, Mike Spreitzer
      wrote:<br>
    </div>
    <blockquote
cite="mid:OF7ADFF32D.B16200D3-ON85257E32.00693F1F-85257E32.0069A607@us.ibm.com"
      type="cite"><font size="2" face="sans-serif">Is there a way to
        create multiple external
        networks from Neutron's point of view, where both of those
        networks are
        accessed through the same host NIC?  Obviously those networks
        would
        be using different subnets.  I need this sort of thing because
        the
        two subnets are treated differently by the stuff outside of
        OpenStack,
        so I need a way that a tenant can get a floating IP of the sort
        he wants.
         Since Neutron equates floating IP allocation pools with
        external
        networks, I need two external networks.</font>
      <br>
      <br>
      <font size="2" face="sans-serif">I found, for example, </font><a
        moz-do-not-send="true"
        href="http://www.marcoberube.com/archives/248"><font size="2"
          color="blue" face="sans-serif">http://www.marcoberube.com/archives/248</font></a><font
        size="2" face="sans-serif">
        --- which describes how to have multiple external networks but
        uses a distinct
        host network interface for each one.</font>
      <br>
      <br>
      <font size="2" face="sans-serif">Thanks,<br>
        Mike</font>
      <br>
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      <pre wrap="">_______________________________________________
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</pre>
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