<HTML xmlns="http://www.w3.org/TR/REC-html40" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:w="urn:schemas-microsoft-com:office:word"><head><META content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta content="text/html; charset=utf-8" http-equiv=Content-Type>
<meta content="Microsoft Word 12 (filtered medium)" name=Generator>
<!--[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;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 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
{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";}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0in;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:Consolas;}
span.EmailStyle21
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;}
@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="1028" />
</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>
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" HEIGHT="285" STYLE="BORDER-RIGHT: #c0c0c0 3px solid; BORDER-TOP: #666666 1px solid; BORDER-LEFT: #666666 1px solid; WIDTH: 659px; BORDER-BOTTOM: #c0c0c0 3px solid; BORDER-COLLAPSE: collapse; HEIGHT: 285px" WIDTH="659">
<TBODY>
<TR>
<TD HEIGHT="90" WIDTH="4%"></TD>
<TD HEIGHT="90" WIDTH="59%">
<P ALIGN="left"><IMG ALIGN="left" ALT="Litigation Management" BORDER="0" HEIGHT="54" HSPACE="0" SRC="http://www.medicineforthedefense.com/main/gifs/LMI-side-pms690wBlack.jpg" WIDTH="279"></P></TD>
<TD HEIGHT="90" WIDTH="36%">
<P ALIGN="right"><FONT COLOR="navy" FACE="Verdana"><A HREF="http://www.medicineforthedefense.com/"><FONT COLOR="olive" FACE="Arial" SIZE="2">Serious Medicine for the Defense ®</FONT></A></FONT><FONT COLOR="olive" FACE="Arial" SIZE="2"> </FONT></P></TD>
<TD HEIGHT="90" WIDTH="1%"></TD></TR>
<TR>
<TD COLSPAN="3" HEIGHT="139" WIDTH="100%">
<TABLE BORDER="0" WIDTH="99%">
<TBODY>
<TR>
<TD WIDTH="4%"></TD>
<TD COLSPAN="2" VALIGN="top" WIDTH="100%"><FONT COLOR="navy" FACE="Verdana">
<P ALIGN="left"><FONT COLOR="black" SIZE="2">
<div class=Section1>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I just want to thank everyone for the responses – a lot of
information to digest, but it has been extremely helpful!<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'>With all the suggestions and some other things I was able to
find, we’ve certainly been able to prove at the very least that things
are not quite as they should be, which we suspected, and that was all that we
need for now. <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'>Luckily, we’re getting ready to pretty much overhaul
everything as part of a building move, and bring in some people who actually
know what they’re doing, so I think we’ll be able to get it all
straightened out.<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'>Thanks again!<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>
<BR></FONT></P></FONT></TD></TR>
<TR>
<TD WIDTH="4%"></TD>
<TD VALIGN="top" WIDTH="45%"><FONT FACE="Verdana" SIZE="2"><FONT COLOR="navy"><STRONG>John V. Weigand</STRONG><BR></FONT><FONT COLOR="black" SIZE="1"><FONT COLOR="navy">Help Desk Support/Executive Support<BR></FONT><BR>Litigation Management, Inc.<BR>300 Allen-Bradley Drive<br>Suite 200<BR>Mayfield Heights, OH 44124<BR><BR></FONT></FONT></TD>
<TD VALIGN="top" WIDTH="51%">
<P><FONT FACE="Verdana" SIZE="2"><FONT COLOR="navy"><FONT SIZE="1"><FONT COLOR="black"></FONT></FONT></FONT></FONT></P>
<P><FONT FACE="Verdana" SIZE="2"><FONT COLOR="navy"><FONT SIZE="1"><FONT COLOR="black"><BR><BR><FONT SIZE="3"><BR></FONT>Tel:</FONT> 440-484-2000</FONT><BR></FONT><FONT SIZE="1"><FONT COLOR="black">Fax: 440-484-2009<BR>Cell: <BR>email: <a href="mailto:jvw@medicineforthedefense.com">jvw@medicineforthedefense.com</a> <BR></FONT></FONT></FONT></P></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE><FONT FACE="Verdana" SIZE="2"><FONT COLOR="#808080"><FONT SIZE="1"><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.<BR></FONT></FONT></FONT><FONT COLOR="black"><BR><FONT FACE="Verdana" SIZE="2">
<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"'> Sean Walberg
[mailto:swalberg@gmail.com] <br>
<b>Sent:</b> Tuesday, January 06, 2009 3:59 PM<br>
<b>To:</b> Wes Sisk<br>
<b>Cc:</b> Weigand, John V.; James Buchanan; cisco-voip@puck.nether.net<br>
<b>Subject:</b> Re: [cisco-voip] How to check for QoS?<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'>It's not a simple thing to
prove as you point out, but it's simple to disprove.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>He's got no policy-map on the router and has shown that DSCP
tags are not being carried over the WAN for a voice call.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>I'm sure all of us who are router jocks could pull out our
DocCDs and come up with some configs that would technically give voice
protection against jitter and starvation, and also guarantee signaling gets
through in times of congestion, and still not use DSCP/IPP tags or MQC. But
even if we could, would you recommend using it?<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>But, playing the odds, something's not right with his QoS
config, whatever it is. The question wasn't a laundry list of all the
possible options (which is good to have if one wants to plan this), but it was
from a business person to a techie, "Is QoS configured?"<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>When I heard the question, I took off my techie beanie and
put on my business hat. "Does my network provide what voice needs to
get through and ensure quality and reliability?".<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>Again, playing the odds, I'm going to answer "No".
I don't have to worry about border elements, which tags he's using for
what, or what kind of hardware queues he's running. I'm not designing his
network, I'm trying to help him answer a simple question. Somewhere the
DSCP tags are getting stripped. In my books, QoS isn't configured correctly, it
needs to be looked at.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>The followup questions to this, though, are not simple, and
your questions would be a good start. :)<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>Sean<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal>On Tue, Jan 6, 2009 at 2:27 PM, Wes Sisk <<a href="mailto:wsisk@cisco.com">wsisk@cisco.com</a>> wrote:<o:p></o:p></p>
<div>
<p class=MsoNormal>what does 'if QoS was enabled' mean?<br>
cisco hardphones: set DSCP according to CM config barring a few defects<br>
cm: QoS is configurable depending on customer policy<br>
voice gateways: QoS configurable depending on customer policy<br>
what method of CAC is in use? GK, CM Locations, RSVP?<br>
switches: may or may not trust phones, but are you doing dot1q or dot1p tagging
to take advantage of L2 QoS? Are you trusting phone QoS?<br>
network: do the devices even support any type of QoS? 1q2T 2q2T.... are their
priority output queues? is it such high bandwith with such low utilization that
QoS is N/A? are firewalls, Border Elements, or Proxies in use? Do
those preserve ip prec or DSCP?<br>
what is the standard for QoS in the network? ip prec or DSCP? what QoS
classes are in use on the network? there are recommended defaults but
those do not have to be followed.<br>
are there soft clients in use? how is QoS designed and deployed for
those?<br>
<br>
The net is that QoS is 7 parts technical and 3 parts policy.<br>
<br>
Proper QoS depends on agreement between the policy and the configuration of
devices. <br>
<br>
the simple question unfortunately is not so simple.<br>
<span style='color:#888888'><br>
/wes</span><o:p></o:p></p>
<div>
<div>
<p class=MsoNormal><br>
<br>
On Tuesday, January 06, 2009 3:12:51 PM, Sean Walberg <a href="mailto:swalberg@gmail.com" target="_blank"><swalberg@gmail.com></a>
wrote:<br>
<br>
<o:p></o:p></p>
<p class=MsoNormal>To be fair, he only asked how he could find out if QoS was
enabled or not. It pretty clearly is not, so he might be able to pass the
buck off to someone else :) <o:p></o:p></p>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'>Sean<o:p></o:p></p>
<div>
<p class=MsoNormal>On Tue, Jan 6, 2009 at 2:05 PM, Wes Sisk <<a href="mailto:wsisk@cisco.com" target="_blank">wsisk@cisco.com</a>> wrote:<o:p></o:p></p>
<div>
<p class=MsoNormal>Hi John,<br>
<br>
There are many facets to QoS. I recommend you grab a six pack of
caffeine, a quiet room, and the QoS SRND.<br>
<br>
Regards,<br>
Wes<br>
<br>
On Tuesday, January 06, 2009 10:28:37 AM, Weigand, John V. <a href="mailto:jvw@medicineforthedefense.com" target="_blank"><jvw@medicineforthedefense.com></a>
wrote:<br>
<br>
<o:p></o:p></p>
<table border=1 cellpadding=0 cellspacing=0 class=MsoNormalTable style='width:494.25pt;border-collapse:collapse;border:none' width=659>
<tr style='height:67.5pt'>
<td style='width:4.0%;border-top:solid windowtext 1.0pt;
border-left:solid windowtext 1.0pt;border-bottom:none;border-right:none;
padding:0in 0in 0in 0in;height:67.5pt' width="4%"></td>
<td style='width:59.0%;border:none;border-top:solid windowtext 1.0pt;
padding:0in 0in 0in 0in;height:67.5pt' width="59%">
<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="" />
<w:wrap type="square"/>
</v:shape><![endif]--><![if !vml]><img align=left alt="Litigation Management" height=54 src v:shapes="_x0000_s1026" width=279><![endif]><o:p></o:p></p>
</td>
<td style='width:36.0%;border:none;border-top:solid windowtext 1.0pt;
padding:0in 0in 0in 0in;height:67.5pt' width="36%">
<p align=right style='text-align:right'><span style='font-family:"Verdana","sans-serif";
color:navy'><a href="http://www.medicineforthedefense.com/" target="_blank"><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 style='width:1.0%;border-top:solid windowtext 1.0pt;
border-left:none;border-bottom:none;border-right:solid windowtext 2.25pt;
padding:0in 0in 0in 0in;height:67.5pt' width="1%"></td>
</tr>
<tr style='height:104.25pt'>
<td colspan=3 style='width:100.0%;border-top:none;border-left:
solid windowtext 1.0pt;border-bottom:solid windowtext 2.25pt;border-right:
none;padding:0in 0in 0in 0in;height:104.25pt' width="100%">
<table border=0 cellpadding=0 class=MsoNormalTable style='width:99.0%' width="99%">
<tr>
<td style='width:4.0%;padding:.75pt .75pt .75pt .75pt' width="4%"></td>
<td colspan=2 style='width:100.0%;padding:.75pt .75pt .75pt .75pt' valign=top width="100%">
<div>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'>Thanks so much for everyone's input, it's very much
appreciated!</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'>"show policy-map" on both our voice and data routers
is returning with nothing, so I'm taking that to mean we don't have any
policies applied on those.</span><o:p></o:p></p>
<div>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'>I was able to get the packet capture into Wireshark, and the
RTP packets are showing the following:</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> </span><o:p></o:p></p>
</div>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'>Differentiated Services Field: 0xb8 (DSCP 0x2e: Expedited
Forwarding; ECN: 0x00)</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'>
1011 10.. = Differentiated Services Codepoint: Expedited Forward (0x2e)</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'>Based on my very limited knowledge, that does look like we're
applying QoS somewhere? If that is the case, would it be applied at the
switchports?</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> </span><o:p></o:p></p>
</div>
</td>
</tr>
<tr>
<td style='width:4.0%;padding:.75pt .75pt .75pt .75pt' width="4%"></td>
<td style='width:45.0%;padding:.75pt .75pt .75pt .75pt' valign=top width="45%">
<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><o:p></o:p></p>
</td>
<td style='width:51.0%;padding:.75pt .75pt .75pt .75pt' valign=top width="51%">
<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" target="_blank">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 windowtext 2.25pt;
border-right:solid windowtext 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><o:p></o:p></p>
<p><b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'>From:</span></b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> Sean Walberg [<a href="mailto:swalberg@gmail.com" target="_blank">mailto:swalberg@gmail.com</a>]
<br>
<b>Sent:</b> Monday, January 05, 2009 5:37 PM<br>
<b>To:</b> James Buchanan<br>
<b>Cc:</b> Weigand, John V.; <a href="mailto:cisco-voip@puck.nether.net" target="_blank">cisco-voip@puck.nether.net</a><br>
<b>Subject:</b> Re: [cisco-voip] How to check for QoS?</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'> </span><o:p></o:p></p>
<p style='margin-bottom:12.0pt'><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'>If you get the packet capture into Wireshark, you can (in addition
to checking for the DSCP == EF) measure the latency to see if QoS is doing its
job.<br>
<br>
>From a router, though, you can check your policy maps with "show
policy-map" or "show policy-map interface", it will tell you if
a policy is applied and what it's doing. You're looking for a priority
queue.<br>
<br>
The Cisco QoS SRND is a good way to understand QoS. It's hefty, but most
of the details are duplicated for every model of switch.<br>
<br>
Sean</span><o:p></o:p></p>
<div>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'>On
Mon, Jan 5, 2009 at 4:07 PM, James Buchanan <<a href="mailto:jbuchanan@ctiusa.com" target="_blank">jbuchanan@ctiusa.com</a>>
wrote:</span><o:p></o:p></p>
<div>
<div>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'>Hi
John,</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'>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. </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'>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. </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'>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.</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'>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.</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'>Thanks,</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'>James</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'> </span><o:p></o:p></p>
<div>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;
border-color:-moz-use-text-color'>
<p><b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'>From:</span></b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'> <a href="mailto:cisco-voip-bounces@puck.nether.net" target="_blank">cisco-voip-bounces@puck.nether.net</a> [mailto:<a href="mailto:cisco-voip-bounces@puck.nether.net" target="_blank">cisco-voip-bounces@puck.nether.net</a>]
<b>On Behalf Of </b>Weigand, John V.<br>
<b>Sent:</b> Monday, January 05, 2009 4:02 PM<br>
<b>To:</b> <a href="mailto:cisco-voip@puck.nether.net" target="_blank">cisco-voip@puck.nether.net</a><br>
<b>Subject:</b> [cisco-voip] How to check for QoS?</span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'> </span><o:p></o:p></p>
<table border=0 cellpadding=0 cellspacing=0 class=MsoNormalTable style='width:494.25pt;border-collapse:collapse' width=659>
<tr style='height:67.5pt'>
<td style='width:4.0%;border-top:solid windowtext 1.0pt;
border-left:solid windowtext 1.0pt;border-bottom:none;border-right:none;
padding:0in 0in 0in 0in;height:67.5pt;border-color:-moz-use-text-color -moz-use-text-color windowtext' width="4%"></td>
<td style='width:59.0%;border:none;border-top:solid windowtext 1.0pt;
padding:0in 0in 0in 0in;height:67.5pt;border-color:-moz-use-text-color' width="59%">
<p class=MsoNormal><!--[if gte vml 1]><v:shape id="_x0000_s1027" type="#_x0000_t75"
alt="Litigation Management" style='position:absolute;margin-left:0;
margin-top:0;width:209.25pt;height:40.5pt;z-index:251659264;
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="" />
<w:wrap type="square"/>
</v:shape><![endif]--><![if !vml]><img align=left alt="Litigation Management" height=54 src v:shapes="_x0000_s1027" width=279><![endif]><o:p></o:p></p>
</td>
<td style='width:36.0%;border:none;border-top:solid windowtext 1.0pt;
padding:0in 0in 0in 0in;height:67.5pt;border-color:-moz-use-text-color' width="36%">
<p align=right style='text-align:right'><span style='color:navy'><a href="http://www.medicineforthedefense.com/" target="_blank"><span style='font-size:10.0pt;color:olive'>Serious Medicine for the Defense ®</span></a></span><span style='font-size:10.0pt;color:olive'> </span><o:p></o:p></p>
</td>
<td style='width:1.0%;border-top:solid windowtext 1.0pt;
border-left:none;border-bottom:none;border-right:solid windowtext 2.25pt;
padding:0in 0in 0in 0in;height:67.5pt;border-color:-moz-use-text-color' width="1%"></td>
</tr>
<tr style='height:104.25pt'>
<td colspan=3 style='width:100.0%;border-top:none;border-left:
solid windowtext 1.0pt;border-bottom:solid windowtext 2.25pt;border-right:
none;padding:0in 0in 0in 0in;height:104.25pt;border-color:-moz-use-text-color -moz-use-text-color silver rgb(102, 102, 102)' width="100%">
<table border=0 cellpadding=0 class=MsoNormalTable style='width:99.0%' width="99%">
<tr>
<td style='width:4.0%;padding:.75pt .75pt .75pt .75pt' width="4%"></td>
<td colspan=2 style='width:100.0%;padding:.75pt .75pt .75pt .75pt' valign=top width="100%">
<p><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.</span><o:p></o:p></p>
<p><span style='color:black'> </span><o:p></o:p></p>
<p><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. </span><o:p></o:p></p>
<p><span style='color:black'> </span><o:p></o:p></p>
<p><span style='color:black'>Thanks in advance!</span><o:p></o:p></p>
<p><span style='color:navy'> </span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style='width:4.0%;padding:.75pt .75pt .75pt .75pt' width="4%"></td>
<td style='width:45.0%;padding:.75pt .75pt .75pt .75pt' valign=top width="45%">
<p style='margin-bottom:12.0pt'><b><span style='font-size:10.0pt;
color:navy'>John V. Weigand</span></b><span style='font-size:10.0pt;
color:navy'><br>
</span><span style='font-size:7.5pt;color:navy'>Help Desk Support/Executive
Support<br>
</span><span style='font-size:7.5pt;color:black'><br>
Litigation Management, Inc.<br>
300 Allen-Bradley Drive<br>
Suite 200<br>
Mayfield Heights, OH 44124</span><o:p></o:p></p>
</td>
<td style='width:51.0%;padding:.75pt .75pt .75pt .75pt' valign=top width="51%">
<p><span style='font-size:7.5pt;color:black'><br>
<br>
</span><span style='color:black'><br>
</span><span style='font-size:7.5pt;color:black'>Tel:</span><span style='font-size:7.5pt;color:navy'> 440-484-2000</span><span style='font-size:10.0pt;color:navy'><br>
</span><span style='font-size:7.5pt;color:black'>Fax: 440-484-2009<br>
Cell: <br>
email: <a href="mailto:jvw@medicineforthedefense.com" target="_blank">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 windowtext 2.25pt;
border-right:solid windowtext 2.25pt;padding:0in 0in 0in 0in;height:104.25pt;
border-color:-moz-use-text-color silver silver -moz-use-text-color'></td>
</tr>
</table>
<p style='margin-bottom:12.0pt'><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'><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><o:p></o:p></p>
</div>
</div>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'>No
virus found in this incoming message.<br>
Checked by AVG - <a href="http://www.avg.com" target="_blank">http://www.avg.com</a><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>
</div>
<p style='margin-bottom:12.0pt'><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:black'><br>
_______________________________________________<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></span><o:p></o:p></p>
</div>
<p><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:black'><br>
<br clear=all>
<br>
-- <br>
Sean Walberg <<a href="mailto:sean@ertw.com" target="_blank">sean@ertw.com</a>>
<a href="http://ertw.com/" target="_blank">http://ertw.com/</a></span><o:p></o:p></p>
<pre style='text-align:center'>
<hr align=center size=4 width="90%">
</pre><pre>_______________________________________________<o:p></o:p></pre><pre>cisco-voip mailing list<o:p></o:p></pre><pre><a href="mailto:cisco-voip@puck.nether.net" target="_blank">cisco-voip@puck.nether.net</a><o:p></o:p></pre><pre><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></pre><pre> <o:p></o:p></pre>
<p class=MsoNormal><o:p> </o:p></p>
</div>
</div>
<p class=MsoNormal><br>
<br clear=all>
<br>
-- <br>
Sean Walberg <<a href="mailto:sean@ertw.com" target="_blank">sean@ertw.com</a>>
<a href="http://ertw.com/" target="_blank">http://ertw.com/</a><o:p></o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
</div>
</div>
</div>
<p class=MsoNormal><br>
<br clear=all>
<br>
-- <br>
Sean Walberg <<a href="mailto:sean@ertw.com">sean@ertw.com</a>>
<a href="http://ertw.com/">http://ertw.com/</a><o:p></o:p></p>
</div>
</div>
</FONT></FONT></BODY></HTML>