<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:x="urn:schemas-microsoft-com:office:excel" xmlns:p="urn:schemas-microsoft-com:office:powerpoint" xmlns:a="urn:schemas-microsoft-com:office:access" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:z="#RowsetSchema" xmlns:b="urn:schemas-microsoft-com:office:publisher" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet" xmlns:odc="urn:schemas-microsoft-com:office:odc" xmlns:oa="urn:schemas-microsoft-com:office:activation" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:q="http://schemas.xmlsoap.org/soap/envelope/" xmlns:D="DAV:" xmlns:x2="http://schemas.microsoft.com/office/excel/2003/xml" xmlns:ois="http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:dir="http://schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:dsp="http://schemas.microsoft.com/sharepoint/dsp" xmlns:udc="http://schemas.microsoft.com/data/udc" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sub="http://schemas.microsoft.com/sharepoint/soap/2002/1/alerts/" xmlns:ec="http://www.w3.org/2001/04/xmlenc#" xmlns:sp="http://schemas.microsoft.com/sharepoint/" xmlns:sps="http://schemas.microsoft.com/sharepoint/soap/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:udcs="http://schemas.microsoft.com/data/udc/soap" xmlns:udcxf="http://schemas.microsoft.com/data/udc/xmlfile" xmlns:udcp2p="http://schemas.microsoft.com/data/udc/parttopart" xmlns:wf="http://schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:dsss="http://schemas.microsoft.com/office/2006/digsig-setup" xmlns:dssi="http://schemas.microsoft.com/office/2006/digsig" xmlns:mdssi="http://schemas.openxmlformats.org/package/2006/digital-signature" xmlns:mver="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:mrels="http://schemas.openxmlformats.org/package/2006/relationships" xmlns:spwp="http://microsoft.com/sharepoint/webpartpages" xmlns:ex12t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:ex12m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:pptsl="http://schemas.microsoft.com/sharepoint/soap/SlideLibrary/" xmlns:spsl="http://microsoft.com/webservices/SharePointPortalServer/PublishedLinksService" xmlns:Z="urn:schemas-microsoft-com:" xmlns:st="" 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 12 (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:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@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:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-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
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
span.EmailStyle17
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.EmailStyle20
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.Section1
{page:Section1;}
-->
</style>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1027" />
</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=Section1>
<p class=MsoNormal><span style='color:#1F497D'>Hi John,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>The biggest thing you are
looking for is that the voice traffic is being marked and that the marking is
being recognized throughout the network. A packet capture is the quickest way
to determine this. In the packet capture, you will see a field for
Differentiated Services. For traffic that is the actual audio payload, you
should see the Differentiated Services field as Expedited Forwarding. You will
want to check packets going in each direction. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>On the switches, for ports that have
a phone plugged in you should see that the switchport is configured to trust
cos and is configured to trust based on the device being a cisco phone (mls qos
trust cos and mls qos trust cisco-phone). What these commands look like can
vary according to the model of switch. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>For any connection that is a
voice server or voice gateway, the switchport should trust the dscp value (mls
qos trust dscp). This should also be true on uplinks from switch to switch and
from switch to WAN router.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>On the WAN router, depending
upon the speed of your connection you should be using some sort of low latency
queuing and/or traffic shaping.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Thanks,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>James<o:p></o:p></span></p>
<p class=MsoNormal><span style='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>Weigand, John
V.<br>
<b>Sent:</b> Monday, January 05, 2009 4:02 PM<br>
<b>To:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> [cisco-voip] How to check for QoS?<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0 width=659
style='width:494.25pt;border-collapse:collapse;border:none'>
<tr style='height:67.5pt'>
<td width="4%" style='width:4.0%;border-top:solid #666666 1.0pt;border-left:
solid #666666 1.0pt;border-bottom:none;border-right:none;padding:0in 0in 0in 0in;
height:67.5pt'></td>
<td width="59%" style='width:59.0%;border:none;border-top:solid #666666 1.0pt;
padding:0in 0in 0in 0in;height:67.5pt'>
<p class=MsoNormal><!--[if gte vml 1]><v:shapetype id="_x0000_t75"
coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe"
filled="f" stroked="f">
<v:stroke joinstyle="miter" />
<v:formulas>
<v:f eqn="if lineDrawn pixelLineWidth 0" />
<v:f eqn="sum @0 1 0" />
<v:f eqn="sum 0 0 @1" />
<v:f eqn="prod @2 1 2" />
<v:f eqn="prod @3 21600 pixelWidth" />
<v:f eqn="prod @3 21600 pixelHeight" />
<v:f eqn="sum @0 0 1" />
<v:f eqn="prod @6 1 2" />
<v:f eqn="prod @7 21600 pixelWidth" />
<v:f eqn="sum @8 21600 0" />
<v:f eqn="prod @7 21600 pixelHeight" />
<v:f eqn="sum @10 21600 0" />
</v:formulas>
<v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect" />
<o:lock v:ext="edit" aspectratio="t" />
</v:shapetype><v:shape id="_x0000_s1026" type="#_x0000_t75" alt="Litigation Management"
style='position:absolute;margin-left:0;margin-top:0;width:209.25pt;height:40.5pt;
z-index:251658240;mso-wrap-distance-left:0;mso-wrap-distance-top:0;
mso-wrap-distance-right:0;mso-wrap-distance-bottom:0;
mso-position-horizontal:left;mso-position-horizontal-relative:text;
mso-position-vertical-relative:line' o:allowoverlap="f">
<v:imagedata src="http://www.medicineforthedefense.com/main/gifs/LMI-side-pms690wBlack.jpg" />
<w:wrap type="square"/>
</v:shape><![endif]--><![if !vml]><img width=279 height=54
src="http://www.medicineforthedefense.com/main/gifs/LMI-side-pms690wBlack.jpg"
align=left alt="Litigation Management" v:shapes="_x0000_s1026"><![endif]><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
</td>
<td width="36%" style='width:36.0%;border:none;border-top:solid #666666 1.0pt;
padding:0in 0in 0in 0in;height:67.5pt'>
<p align=right style='text-align:right'><span style='font-family:"Verdana","sans-serif";
color:navy'><a href="http://www.medicineforthedefense.com/"><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:olive'>Serious
Medicine for the Defense ®</span></a></span><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:olive'> </span><o:p></o:p></p>
</td>
<td width="1%" style='width:1.0%;border-top:solid #666666 1.0pt;border-left:
none;border-bottom:none;border-right:solid silver 2.25pt;padding:0in 0in 0in 0in;
height:67.5pt'></td>
</tr>
<tr style='height:104.25pt'>
<td width="100%" colspan=3 style='width:100.0%;border-top:none;border-left:
solid #666666 1.0pt;border-bottom:solid silver 2.25pt;border-right:none;
padding:0in 0in 0in 0in;height:104.25pt'>
<table class=MsoNormalTable border=0 cellpadding=0 width="99%"
style='width:99.0%'>
<tr>
<td width="4%" style='width:4.0%;padding:.75pt .75pt .75pt .75pt'></td>
<td width="100%" colspan=2 valign=top style='width:100.0%;padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='color:black'>I’ve been tasked with checking
to see if our VAR ever setup any QoS at all, and if so, what type and how
it’s set. Unfortunately, although I’ve become fairly proficient at
CallManager itself, I’m pretty new to the inner workings of everything at
the actual network level.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'>I know there’s a few different
ways to set it all up, and I’ve tried poking around, but I’m not really
even sure where to begin looking. Does anyone have any pointers as to how I
might be able to track down some of this info? Is there anything I can tell
from a packet capture of a call from between two of our sites? I do also
have read only access to the switches/routers on the network. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'>Thanks in advance!<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Verdana","sans-serif";
color:navy'><o:p> </o:p></span></p>
</td>
</tr>
<tr>
<td width="4%" style='width:4.0%;padding:.75pt .75pt .75pt .75pt'></td>
<td width="45%" valign=top style='width:45.0%;padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal style='margin-bottom:12.0pt'><strong><span
style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:navy'>John
V. Weigand</span></strong><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:navy'><br>
</span><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";
color:navy'>Help Desk Support/Executive Support<br>
</span><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";
color:black'><br>
Litigation Management, Inc.<br>
300 Allen-Bradley Drive<br>
Suite 200<br>
Mayfield Heights, OH 44124</span><span style='font-size:12.0pt;font-family:
"Times New Roman","serif"'><o:p></o:p></span></p>
</td>
<td width="51%" valign=top style='width:51.0%;padding:.75pt .75pt .75pt .75pt'>
<p><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";
color:black'><br>
<br>
</span><span style='font-family:"Verdana","sans-serif";color:black'><br>
</span><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";
color:black'>Tel:</span><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";
color:navy'> 440-484-2000</span><span style='font-size:10.0pt;font-family:
"Verdana","sans-serif";color:navy'><br>
</span><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";
color:black'>Fax: 440-484-2009<br>
Cell: <br>
email: <a href="mailto:jvw@medicineforthedefense.com">jvw@medicineforthedefense.com</a>
</span><o:p></o:p></p>
</td>
</tr>
</table>
</td>
<td style='border-top:none;border-left:none;border-bottom:solid silver 2.25pt;
border-right:solid silver 2.25pt;padding:0in 0in 0in 0in;height:104.25pt'></td>
</tr>
</table>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:7.5pt;
font-family:"Verdana","sans-serif";color:gray'><br>
PRIVILEGE AND CONFIDENTIALITY NOTICE <br>
<br>
The information in this electronic mail is intended for the named recipients
only. It may contain privileged and confidential material and may be protected
under law by the Health Insurance Portability and Accountability Act. Any use
of this information by anyone other than the intended receiver is prohibited.
If the reader of this message is not the intended recipient, you are hereby
notified that any dissemination, distribution, copying, or other use of this
message or its attachments is strictly prohibited. If you have received this
message in error, please notify the sender immediately by replying to this
electronic e-mail or by calling (800) 778-5424. Please delete it from your
computer. Thank you.</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>No virus
found in this incoming message.<br>
Checked by AVG - http://www.avg.com<br>
Version: 8.0.176 / Virus Database: 270.10.1/1869 - Release Date: 1/5/2009 9:44
AM</span><o:p></o:p></p>
</div>
</body>
</html>