<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 14 (filtered medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:"Brush Script MT";
panose-1:3 6 8 2 4 4 6 7 3 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.EmailStyle17
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle18
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">We do have a secondary DNS in place, after further investigation he primary DNS never went fully down, it went unresponsive during a back-up procedure.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Is it that since the DNS never went ‘fully’ down the Cisco voice side (the SIP trunks) never knew to switch to the secondary DNS (not as smart as the Microsoft
workstations/servers).<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:#1F497D">Thank you<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>
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Jason Aarons (AM) [mailto:jason.aarons@dimensiondata.com]
<br>
<b>Sent:</b> Tuesday, May 26, 2015 8:03 PM<br>
<b>To:</b> Gyrion, Larry; Cisco-voip (cisco-voip@puck.nether.net)<br>
<b>Subject:</b> RE: Changing DNS entries in Call Manager 9.1.2.10000-28<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Everything is hostnames so https works without complaining. Certificates with ip addresses give warnings. 443/TLS/PKI is the future
</span><span style="font-size:11.0pt;font-family:Wingdings;color:#1F497D">J</span><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:#1F497D">You can change CUCM back to ip address but applications and websites, clients like Jabber, will give warnings/errors. I think your DNS should be rock solid,
maybe you need secondary/tertiary dns entries.<o:p></o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"></a><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<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 [<a href="mailto:cisco-voip-bounces@puck.nether.net">mailto:cisco-voip-bounces@puck.nether.net</a>]
<b>On Behalf Of </b>Gyrion, Larry<br>
<b>Sent:</b> Tuesday, May 26, 2015 5:20 PM<br>
<b>To:</b> Cisco-voip (<a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a>)<br>
<b>Subject:</b> [cisco-voip] Changing DNS entries in Call Manager 9.1.2.10000-28<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">We had an issue where we lost outbound calling ability when out primary DNS experiencing an unscheduled outage.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Our DNS entries are by host-name, not IP address. (it never failed over to the secondary DNS server, other items like computers did and internal and incoming
traffic was working fine)<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">We also use UCCE 9<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">I’m not sure why it was configured by host name rather than IP address when it was configured a long time ago.<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">So my questions are:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Is there a valid reason why we use host-names instead of ip addresses?<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">How can we change from host-name to IP address?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Will this affect the licensing (ELM)? (The below is reference to pre 9.0 CUCM)<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:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
<a href="mailto:avholloway@gmail.com">avholloway@gmail.com</a> [<a href="mailto:avholloway@gmail.com">mailto:avholloway@gmail.com</a>]
<b>On Behalf Of </b>Anthony Holloway<br>
<b>Sent:</b> Monday, January 26, 2015 8:13 PM<br>
<b>To:</b> Gyrion, Larry; Cisco-voip (<a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a>)<br>
<b>Subject:</b> Re: [cisco-voip] Changing DNS entries in Call Manager 8.6.2<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">The easiest way to view the license MAC, is to SSH to the server, and issue the show status command.<o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Also, <a href="http://cisco.com/go/license" target="_blank">
http://cisco.com/go/license</a> enables you to rehost your own license files without opening a case. Of course, I don't guarantee you'll be successful, but it's nice to know this option exists.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><img border="0" width="237" height="210" id="_x0000_i1025" src="cid:image001.png@01D0985D.ED985BB0" alt="Inline image 1"><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Another thing to note, you will get 30 days to rehost your license before anything bad happens to your servers, but if you're in a pinch, and you're like on day 28 and you need like 10 more days, you can revert your change, then make the
same change again, to restart the 30 day period.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">If that was confusing, let me use this example. If my primary DNS was 1.1.1.1, and I changed it to 2.2.2.2, I would have 30 days to rehost my licenses. On day 28, I set the primary DNS back to 1.1.1.1, then immediately back to 2.2.2.2,
and the 30 days starts over.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Last, buy certainly not least, if you are changing DNS settings, it would be imperative for you to consider what might happen if you changed your DNS suffix. I cannot speak to your environment exactly, but suffice it to say, certificates
are based on names, and names sometimes contain DNS suffixes. You might start a chain reaction of changes, and as such you should plan that piece out more carefully. If you're only changing DNS server addresses, then you can ignore this last paragraph.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Good luck.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">On Mon Jan 26 2015 at 4:43:19 PM Gyrion, Larry <<a href="mailto:Larry.Gyrion@deancare.com" target="_blank">Larry.Gyrion@deancare.com</a>> wrote:<o:p></o:p></p>
<div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Looking for some guidance on updating the DNS entries on our CUCM cluster. A colleague went through the process, but upon entering the command received a warning stating that the
change would invalidate our licenses. Has anybody come across this before, and if so, what was the proper course of action to ensure license preservation?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">CUCM 8.6.2<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">Thank you,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:18.0pt;font-family:"Brush Script MT";color:#1F497D">Larry Gyrion</span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">
| Telecommunications Analyst | Information Technology</span></b><span style="color:#1F497D">
<br>
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Dean Clinic - Corporate offices</span><span style="font-size:10.0pt;color:#1F497D">
<br>
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">1800 W. Beltline Hwy</span><span style="font-size:10.0pt;color:#1F497D">
<br>
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Madison WI. 53713</span><span style="font-size:10.0pt;color:#1F497D">
<br>
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Phone
<a href="tel:608.294.6201" target="_blank">608.294.6201</a> | 5406201| Fax <a href="tel:608.280.6852" target="_blank">
608.280.6852</a></span><span style="font-size:10.0pt;color:#1F497D"><br>
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><a href="mailto:larry.gyrion@deancare.com" target="_blank">larry.gyrion@deancare.com</a> |
<a href="http://www.deancare.com/" target="_blank">www.deancare.com</a></span><span style="color:#1F497D">
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;line-height:120%">
<b><i><span style="font-size:10.0pt;line-height:120%;font-family:"Arial","sans-serif";color:#6A2C91">Partners who care</span></i></b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
</div>
<p class="MsoNormal">The information contained in this e-mail message and any attachments may be proprietary and is intended only for the confidential use of the designated recipient named above. If the reader of this message is not the intended recipient or
an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution or copying of this message is strictly prohibited. If you have received
this communication in error please notify us immediately at the e-mail address listed above. Thank you.
<o:p></o:p></p>
</div>
<p class="MsoNormal">_______________________________________________<br>
cisco-voip mailing list<br>
<a href="mailto:cisco-voip@puck.nether.net" target="_blank">cisco-voip@puck.nether.net</a><br>
<a href="https://puck.nether.net/mailman/listinfo/cisco-voip" target="_blank">https://puck.nether.net/mailman/listinfo/cisco-voip</a><o:p></o:p></p>
</div>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div class="MsoNormal" align="center" style="text-align:center">
<hr size="3" width="100%" align="center">
</div>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:gray"><br>
Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are
not the intended recipient, please contact the sender by reply email and destroy all copies of the original message.<br>
</span><br>
<br>
<span style="color:white">itevomcid</span> <o:p></o:p></p>
</div>
<br>
<hr>
<font face="Arial" color="Gray" size="1"><br>
Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are
not the intended recipient, please contact the sender by reply email and destroy all copies of the original message.<br>
</font>
</body>
</html>