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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>You need to configure the ports connected
to callmanager to trust dscp and set up a dscp-cos map to map to the proper cos
values.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I’ve had problems getting proper .1q
headers on packet captures of trunks. NIC cards/drivers seem to vary in their
ability to capture .1q frames so seeing all frames tagged with cos 0 may or may
not actually represent what is transmitted.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span lang=EN-US style='font-size:10.0pt;font-family:Tahoma'>
cisco-voip-bounces@puck.nether.net [mailto:cisco-voip-bounces@puck.nether.net] <b><span
style='font-weight:bold'>On Behalf Of </span></b>steve.siltman@assurant.com<br>
<b><span style='font-weight:bold'>Sent:</span></b> December 10, 2007 14:25<br>
<b><span style='font-weight:bold'>To:</span></b> Linsemier, Matthew<br>
<b><span style='font-weight:bold'>Cc:</span></b> cisco-voip@puck.nether.net<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [cisco-voip]
CallManager LAN QOS Question</span></font><span lang=EN-US><o:p></o:p></span></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
</span></font><font size=2 face=sans-serif><span style='font-size:10.0pt;
font-family:sans-serif'>Ahh good catch. I'm seeing different results
between sniffer products. An older version of Ethereal is showing me the
DiffServ field and the bits are correct and in both directions. I'm
guessing that my distributed sniffer either needs an option enabled or a module
paid for. </span></font><br>
<br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'>I
have one more question so that I better understand.</span></font> <br>
<br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'><auto
qos voip trust> adds <mls qos trust cos> to the interface. Should
I change this to <mls qos trust dscp> on all Call Manager interfaces,
router interfaces and trunks? </span></font> <br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'>Would
I ever configure dscp on a cisco or avaya ip phone interface? </span></font><br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'> </span></font>
<br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'>Thanks
for the help. I've been sniffing this almost all afternoon.</span></font>
<br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'><br>
Steve Siltman<br>
Assurant Corporate Technology<br>
Work: 651-361-4752<br>
Cell: 651-336-5563<br>
steve.siltman@assurant.com</span></font> <br>
<br>
<o:p></o:p></p>
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<p class=MsoNormal><b><font size=1 face=sans-serif><span style='font-size:
7.5pt;font-family:sans-serif;font-weight:bold'>"Linsemier, Matthew"
<MLinsemier@apcapital.com></span></font></b><font size=1
face=sans-serif><span style='font-size:7.5pt;font-family:sans-serif'> </span></font><o:p></o:p></p>
<p><font size=1 face=sans-serif><span style='font-size:7.5pt;font-family:
sans-serif'>12/10/2007 01:55 PM</span></font> <o:p></o:p></p>
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<p class=MsoNormal><font size=1 face=sans-serif><span style='font-size:
7.5pt;font-family:sans-serif'><steve.siltman@assurant.com>,
<cisco-voip@puck.nether.net></span></font> <o:p></o:p></p>
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<p class=MsoNormal align=right style='text-align:right'><font size=1
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<p class=MsoNormal><font size=1 face=sans-serif><span style='font-size:
7.5pt;font-family:sans-serif'>RE: [cisco-voip] CallManager LAN QOS Question</span></font><o:p></o:p></p>
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<br>
</span></font><font size=2 color="#1f497d" face=sans-serif><span
style='font-size:10.0pt;font-family:sans-serif;color:#1F497D'>Are you just
sniffing COS? Are the DSCP values correct that CallManager is sending
out? RTP should be marked as DSCP EF and all SCCP,H.323, and SIP should
be marked as DSCP C3. What are your DSCP -> <st1:place w:st="on">COS</st1:place>
mappings on your switch?</span></font> <br>
<font size=2 color="#1f497d" face=sans-serif><span style='font-size:10.0pt;
font-family:sans-serif;color:#1F497D'> </span></font> <br>
<b><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
font-weight:bold'>From:</span></font></b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'> cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] <b><span style='font-weight:bold'>On
Behalf Of </span></b>steve.siltman@assurant.com<b><span style='font-weight:
bold'><br>
Sent:</span></b> Monday, December 10, 2007 2:20 PM<b><span style='font-weight:
bold'><br>
To:</span></b> cisco-voip@puck.nether.net<b><span style='font-weight:bold'><br>
Subject:</span></b> [cisco-voip] CallManager LAN QOS Question</span></font> <br>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><br>
Hi All.</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><br>
I implemented QOS on the LAN this weekend in our shop. I configured 6
closets running a slew of 3750's and four 6500 CAT switches (with a few 6x48
blades). I have one issue so far. I'm sniffing one of the Call
Manager interfaces on the switch and all packets coming into the CallManager
seem to have the correct COS assigned. All of the packets sourced by
CallManager are COS = 0. This makes it look like CallManager is changing
these packets to 0. Did I miss something on CallManager that I need to
enable? The clusterwide parameters (System - QOS) under Service
Parameters is set to Normal Priority, EF, AF41 and CS3. </span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><br>
Running CallManager 4.1.3sr5d</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><br>
Thanks,</span></font> <font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><br>
<br>
Steve Siltman<br>
Assurant Corporate Technology<br>
Work: 651-361-4752<br>
Cell: 651-336-5563<br>
steve.siltman@assurant.com</span></font> <o:p></o:p></p>
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