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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><captain obvious>One of the biggest benefits of a loopback
interface is that it never drops or goes to a “down” state.</captain
obvious><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>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thanks,<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'>Go0se<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'>My blog: <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><a href="http://atc.go0se.com/">http://atc.go0se.com</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'>-------------------------------------<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Help Hopegivers International <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>feed the orphans of India.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><a href="http://www.hopegivers.org/">http://www.hopegivers.org</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>
</div>
<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"'>
cisco-voip-bounces@puck.nether.net [mailto:cisco-voip-bounces@puck.nether.net] <b>On
Behalf Of </b>Lelio Fulgenzi<br>
<b>Sent:</b> Monday, June 14, 2010 2:43 PM<br>
<b>To:</b> Dennis Heim<br>
<b>Cc:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> Re: [cisco-voip] GW IP Address in CCM<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'>Correct. I use loopbacks when I configure redundancy....<br>
<br>
---<br>
Lelio Fulgenzi, B.A.<br>
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1<br>
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)<br>
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^<br>
Cooking with unix is easy. You just sed it and forget it. <br>
- LFJ (with apologies to Mr. Popeil)<br>
<br>
<br>
----- Original Message -----<br>
From: "Dennis Heim" <Dennis.Heim@cdw.com><br>
To: "Lelio Fulgenzi" <lelio@uoguelph.ca>, "Ted
Nugent" <tednugent73@gmail.com><br>
Cc: cisco-voip@puck.nether.net<br>
Sent: Monday, June 14, 2010 3:20:37 PM GMT -05:00 US/Canada Eastern<br>
Subject: RE: [cisco-voip] GW IP Address in CCM<br>
<br>
<br>
<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Loopbacks are only effective if you have more than 1 physical
interface connected to the network. I have seen too many people think
additional redundancy is provided simply by using loopback even though there is
only one network link to the router.</span><span style='color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span style='color:black'><o:p></o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Dennis Heim<br>
Network Voice Engineer<br>
CDW Advanced Technology Services<br>
11711 N. Meridian Street, Suite 225<br>
Carmel, IN 46032<br>
<br>
317.569.4255 Office<br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>317.569.4201 Fax<br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>317.694.6070 Cell</span><span style='color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><a href="mailto:dennis.heim@cdw.com" target="_blank"
title="mailto:dennis.heim@berbee.com">dennis.heim@cdw.com</a><br>
</span><span style='color:#1F497D'><a
href="http://www.cdw.com/content/solutions/unified-communications/"
target="_blank">cdw.com/content/solutions/unified-communications/</a></span><span
style='color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><span
style='color:black'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span style='color:black'><o:p></o:p></span></p>
<div>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;
border-color:-moz-use-text-color -moz-use-text-color'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:black'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:black'> cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] <b>On Behalf Of </b>Lelio Fulgenzi<br>
<b>Sent:</b> Monday, June 14, 2010 3:12 PM<br>
<b>To:</b> Ted Nugent<br>
<b>Cc:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> Re: [cisco-voip] GW IP Address in CCM</span><span
style='color:black'><o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><span style='color:black'> <o:p></o:p></span></p>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif";color:black'>I usually go with loop backs.
Remember, you need to have routing enabled though on the voice gateway so your
loopbacks get advertised properly. Seems silly, but I don't think routing is
turned on by default.<br>
<br>
Lelio<br>
<br>
<br>
---<br>
Lelio Fulgenzi, B.A.<br>
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1<br>
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)<br>
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^<br>
Cooking with unix is easy. You just sed it and forget it. <br>
- LFJ (with apologies to Mr. Popeil)<br>
<br>
<br>
----- Original Message -----<br>
From: "Ted Nugent" <tednugent73@gmail.com><br>
To: "Jeff Ruttman" <ruttmanj@carewisc.org><br>
Cc: cisco-voip@puck.nether.net<br>
Sent: Monday, June 14, 2010 3:02:27 PM GMT -05:00 US/Canada Eastern<br>
Subject: Re: [cisco-voip] GW IP Address in CCM</span><span style='color:black'><o:p></o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'>my experience has been that it will pick the hard interface that
is connected closest to CM (Serial on WAN and ethernet on LAN)</span><span
style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'>I typically lock in the interface that I prefer with the mgcp bind
commands to make certain i know where its getting bound</span><span
style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> </span><span style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'>mgcp bind control source-interface FastEthernet0/1<br>
mgcp bind media source-interface FastEthernet0/1</span><span style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> </span><span style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif";color:black'>HTH Ted</span><span
style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'>On Mon, Jun 14, 2010 at 12:33 PM, Jeff Ruttman <<a
href="mailto:ruttmanj@carewisc.org" target="_blank">ruttmanj@carewisc.org</a>>
wrote:</span><span style='color:black'><o:p></o:p></span></p>
<div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Hi,</span><span style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> </span><span style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>I have a voice router configured, and in CCM an MGCP GW
configured. I put the router on the LAN and all is well except CCM
can't see the loopback interface, so the IP address on the CCM GW is the gig
interface that is connecting the router to the network. Otherwise it
appears that CCM did its MGCP config on the router just fine. Turns out
CCM can't ping the loopback interface on the router.</span><span
style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> </span><span style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>I have the router connected ad hoc, not even on the specific
network where it WILL be connected once in production. I assume there is
something about the networking here that is preventing CCM from
seeing the loopback as I'm currently setup. My questions:</span><span
style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> </span><span style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>When a newly configed CCM GW and voice router first meet, does CCM
look for a loopback by default? And since it couldn't find one on the
voice router, it chose the gig interface instead?</span><span style='color:
black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> </span><span style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>If I were to put the router on the proper network with the final
IP address on the gig interface, and assuming the loopback interface is indeed
now available to CCM, will it then use the loopback IP, or will I have to do
something to make that happen.</span><span style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> </span><span style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Loopback interface on router is Up Up.</span><span
style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> </span><span style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Thanks</span><span style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>jeff</span><span style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> </span><span style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> </span><span style='color:black'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> </span><span style='color:black'><o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif";color:black'><br>
_______________________________________________<br>
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style='color:black'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'><br>
<br>
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