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<p>Excellent thought! However, changing the device ID in the MAC address yields the same result; still detects a duplicate IP address.<br>
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<p>Thanks,</p>
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<p>Ryan<br>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> 秀王瘢雹 <kiwi.voice@gmail.com><br>
<b>Sent:</b> Sunday, March 20, 2016 11:05 PM<br>
<b>To:</b> Ryan Huff<br>
<b>Cc:</b> cisco voip<br>
<b>Subject:</b> Re: [cisco-voip] Unusual UCOS installation condition - sanity check please</font>
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<div>Have you tried changing the mac address of your VM? Sometimes it just happen to generate the same Mac Address as other VM in the network.
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<div>Regards,<br>
Ki Wi</div>
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<div class="gmail_quote">On Sun, Mar 20, 2016 at 11:55 PM, Ryan Huff <span dir="ltr">
<<a href="mailto:ryanhuff@outlook.com" target="_blank">ryanhuff@outlook.com</a>></span> wrote:<br>
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<p>Encountering the <em>duplicate ip on eth0</em> installation error for UCOS. The IP is not actually duplicated on the segment though.</p>
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<p>My experience with this error is that it is usually right; in the sense that <em>
something</em> is not compatible with UCOS in the network. What I'm not certain of, is what method the installer uses to determine the duplicate condition. I believe the installer is using an ARP ping to determine if there is a dup condition. The error comes
on a subscriber, right after the validation to first node check.<br>
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<p>I believe the network may be using Proxy ARP (not completely sure); which to my knowledge, won't work with UCOS. I don't have visibility/access into the network but I do need to be able to articulate <em>why</em> the installer detects a dup IP (when there
really isn't a dup IP). I have quadruple verified I am using the right first node / security password. This is happening for multiple subscriber nodes too (same segment), so I'm confident it is network related, not fat-finger related.
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<p>Here is the Scenario:</p>
<ul>
<li>CUCM 10.5.2 cluster over WAN (not sure what the WAN link is)</li><li>2 sites; SITE_A and SITE_B (not sure what infrastructure gear is at each site)
<ul>
<li>SITE_A: pub&sub</li><li>SITE_B: sub</li></ul>
</li></ul>
<p>In SITE_A, the pub&sub install without issue. In SITE_B, right after the sub installer does the validation to first node check, it pops the
<em>duplicate ip</em> error. I have a linux server installed on the SITE_A and SITE_B segment.
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<p>From the SITE_A linux server, I do an ARPing to the SITE_B IP addresses and I get the MAC address for the SITE_A WAN router (Cisco OID). From the SITE_B linux server, I do an ARPing to the SITE_A IP addresses and I get the MAC address for the SITE_B WAN
router (Cisco OID).</p>
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<p>Anyone have any thoughts into this?<br>
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Thanks,<br>
<br>
Ryan<br>
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