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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><a href="https://supportforums.cisco.com/document/68701/communications-manager-security-default-and-itl-operation-and-troubleshooting#Changing_Host_Names_or_Domain_Names">https://supportforums.cisco.com/document/68701/communications-manager-security-default-and-itl-operation-and-troubleshooting#Changing_Host_Names_or_Domain_Names</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Take a look there, pretty much covers every scenario, I just did a multi-node with ITL only for the same reasons as you and it worked like a charm.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Rebuild definitely not necessary.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#003366"><img border="0" width="225" height="105" id="Picture_x0020_1" src="cid:image001.jpg@01CFB53C.A6ADFFC0" alt="cid:image001.jpg@01C95158.4441E1B0"></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Matthew G. Loraditch – CCNP-Voice, CCNA-R&S, CCDA<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#1F497D">1965 Greenspring Drive</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><br>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#1F497D">Support Phone. 410.252.8830</span><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><img border="0" width="214" height="58" id="Picture_x0020_2" src="cid:image002.png@01CFB53C.A6ADFFC0"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> cisco-voip [mailto:cisco-voip-bounces@puck.nether.net]
<b>On Behalf Of </b>Ed Leatherman<br>
<b>Sent:</b> Monday, August 11, 2014 8:00 AM<br>
<b>To:</b> Cisco VOIP<br>
<b>Subject:</b> [cisco-voip] Question about enabling DNS on CUCM cluster(s)<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Good morning!<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Was hoping someone with a little more experience on the jabber/collab edge side could point me in the right direction here.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I have 2 CUCM clusters that I am researching configuring jabber and/or collab edge for. Up till now I've never had a need for DNS resolution on the either. One of them has been operational since version 3 dot something and back then it
seemed the recommendation to stay away from DNS in general on CUCM unless there was a good reason otherwise.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I see there are just a few commands to enable it and setup servers etc - are there any gotchas with database replication or security that I need to be aware of? I don't plan on changing the hostname of the servers themselves or their IP
addresses.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">The old cluster has CTLs/USB tokens. The "slightly" newer cluster is just running in security-by-default mode. Both clusters are @ version 9.1.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">My research thus far seems to say turning DNS up on earlier versions of CUCM required rebuilds but seems to not be the case now, but I haven't turned up anything in the official docs. I have a TAC case open to ask about it but I'm still
at the explain DNS and what my business case is stage ;)<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Appreciate any tips!<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks,<o:p></o:p></p>
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<p class="MsoNormal">Ed<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-- <br>
Ed Leatherman<o:p></o:p></p>
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