<div dir="ltr"><div>Hi James,</div><div><br></div><div>It might be worth tidying up, but I'd be surprised if that was the cause of this issue.</div><div><br></div><div>What version of CUCM are you running?</div><div>Do you have a Webex Control Hub and Connected UC setup yet?</div><div>(If you don't have Flex and Control Hub - a partner could spin up a trial to use temporarily).</div><div><br></div><div>This integration is really useful.. especially for intermittent issues.</div><div>It's going to give you a read on all the calls that go through and their quality.</div><div>So you can pin-point issues, and then dive into them.</div><div>You can also then get TAC to work these things directly (they can actually pull traces as well).</div><div>But having the consolidated list of calls and quality is a game changer (especially spotting patterns etc).</div><div>And of course it is really quick and easy to set up if you have some spare VM space.</div><div><br></div><div>Otherwise, old school, I'd be looking at the media flows (is there anything else in the path - i.e. an MTP, DSP etc that could be introducing an issue on some calls) - where are the problematic calls traversing etc.</div><div>When you have some more info on the paths - you can always look at the old Wiresharks.. rotating capture buffers.</div><div>Unless you have a nice network with some built in capture capability - like Meraki!</div><div><br></div><div><br></div><div>Cheers,</div><div><br></div><div>Tim</div><div><br></div><div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, 24 Jun 2022 at 14:29, James Andrewartha <<a href="mailto:jandrewartha@ccgs.wa.edu.au">jandrewartha@ccgs.wa.edu.au</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div lang="EN-AU" style="overflow-wrap: break-word;">
<div class="gmail-m_-6954848054509227979WordSection1">
<p class="MsoNormal"><span style="font-family:Verdana,sans-serif">Hi voipers,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:Verdana,sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:Verdana,sans-serif">We have persistent reports of garbled voice quality (like when a mobile phone call glitches briefly) in one location on our campus, of course never when I’m there to observe it and get a capture.
One thing I’ve noticed is the 802.1p priority isn’t being set on the packets. The setup is CUCM on VMware connected to a portgroup of VLAN 101. There’s also a 4331 which handles SIP termination on VLAN101. These are then routed by a (HSRP redundant pair of)
2921 to VLAN100 where the phones live. The 2921 doesn’t map the DSCP set by CUCM or 4331 to an 802.1p priority after routing, and for the life of me I can’t work out how to do it. I can’t work out how to do it on the 4331 either, I could move routing of the
subnets to it but I was waiting until I got the second one which I ordered months ago arrives.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:Verdana,sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:Verdana,sans-serif">Googling is useless, I end up with results for different variants of IOS or switches, none of which work on IOS 15 on the 2921. Surely it’s not that hard to just say “trust DSCP and map it
to 802.1p”?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:Verdana,sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:Verdana,sans-serif">Thanks,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:Verdana,sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10pt;font-family:"Courier New"">-- <u></u>
<u></u></span></p>
<p class="MsoNormal"><span style="font-size:10pt;font-family:"Courier New"">James Andrewartha<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10pt;font-family:"Courier New"">Network & Projects Engineer<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10pt;font-family:"Courier New"">Christ Church Grammar School<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10pt;font-family:"Courier New"">Claremont, Western Australia<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10pt;font-family:"Courier New"">Ph. (08) 9442 1757<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10pt;font-family:"Courier New"">Mob. 0424 160 877<u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
</div>
_______________________________________________<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" rel="noreferrer" target="_blank">https://puck.nether.net/mailman/listinfo/cisco-voip</a></blockquote></div><div dir="ltr" class="gmail_signature"><div dir="ltr"><div style="margin:0px;padding:0px;border:0px;font-stretch:inherit;font-size:12pt;line-height:inherit;font-family:Calibri,Arial,Helvetica,sans-serif;vertical-align:baseline;color:rgb(0,0,0)"></div></div></div></div>