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<div class="moz-cite-prefix">Hi Nate, <br>
<br>
Thanks for your reply. But I am not running in multi-host mode
now. The cluster uses one nova-networking service on the
controller node. <br>
<br>
Xin<br>
<br>
On 12/17/2012 9:31 PM, Nathanael Burton wrote:<br>
</div>
<blockquote
cite="mid:CAHTGUNRnTcsiWiNaMRQ7WAbNni9Kk7qFxs4CjMRdrJ_dzpixvw@mail.gmail.com"
type="cite">
<p dir="ltr"><br>
On Dec 17, 2012 2:05 PM, "Xin Zhao" <<a
moz-do-not-send="true" href="mailto:xzhao@bnl.gov">xzhao@bnl.gov</a>>
wrote:<br>
><br>
> Hello,<br>
><br>
> I allocate 2 public ips to instances, the first one becomes
accessible almost immediately, but the second one<br>
> always take a long time to be pingable. It doesn't matter
which specific IP is assigned first or second, it's always<br>
> the second one that is slow to be reachable, although the
corresponding iptable rules are all set on the controller<br>
> node almost immediately. Has anyone seen similar
behavior?<br>
><br>
> I am using essex (2012.1) on RHEL6.<br>
><br>
> Thanks,<br>
> Xin<br>
><br>
><br>
><br>
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<p dir="ltr">Xin,</p>
<p dir="ltr">You may need to use send_arp_for_ha=true to send a
gratuitous ARP if you're using multi-host networking.</p>
<p dir="ltr">Nate</p>
</blockquote>
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