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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">This is also my understanding of how CUCM allocates the same media resource type within the same MRG. My lab is currently on 8.6(2)a and I’m unable to recreate the problem
– I’ve placed two calls, back to back, and put both on hold while having two MOH servers (MOH_2 and MOH_3) in the same MRG assigned to the called device MRGL. CUCM allocated MOH_3 for the first call and MOH_2 for the second call.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Going to CCM SDI traces, do you see CUCM immediately allocating the same MOH server? In other words, is there a chance you might have missed previous MOH allocation failures
for your other MOH resources in the trace file? Do you see a <b><i>sendMohAllocateRequestToDevice</i></b> event for other MOH resources prior to the allocation of the overused MOH server?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Also, some trace entries that might be of interest:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#404040;mso-style-textfill-fill-color:#404040;mso-style-textfill-fill-alpha:100.0%">MediaResourceCdpc(8)::createLookupTbl Name=MOH_2 Cepn=cfb5e1cd-fa16-495f-a380-7b7e75b1887c
<span style="background:yellow;mso-highlight:yellow">Weight=0 Group=0 Counter=0</span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#404040;mso-style-textfill-fill-color:#404040;mso-style-textfill-fill-alpha:100.0%">MediaResourceCdpc(8)::createLookupTbl Name=MOH_3 Cepn=cf2d51e6-ece4-403b-b096-ed188521ab40
<span style="background:yellow;mso-highlight:yellow">Weight=0 Group=0 Counter=1</span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#404040;mso-style-textfill-fill-color:#404040;mso-style-textfill-fill-alpha:100.0%"><o:p> </o:p></span></p>
<p class="MsoNormal"><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">(<b>counter</b> = number of simultaneous allocations)<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">(<b>group</b> = the MRG priority within the MRGL)<o:p></o:p></span></i></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">In the slight chance you do see other (failed) MOH allocation requests prior to the allocation of your overused MOH server, I would also look at and compare the capabilities
for the MOH and held party to make sure there’s a match:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#404040;mso-style-textfill-fill-color:#404040;mso-style-textfill-fill-alpha:100.0%">logCapabilitiesinTrace -- MOH Caps = 4
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#404040;mso-style-textfill-fill-color:#404040;mso-style-textfill-fill-alpha:100.0%">logCapabilitiesinTrace -- Held Party Caps = 4 2 10<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">(<b>4</b> = g711ulaw…
<b>2</b>= alaw)<o:p></o:p></span></i></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Hopefully some of this helps.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Thx<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">- Daniel<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#404040"><o:p> </o:p></span></p>
<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 [mailto:cisco-voip-bounces@puck.nether.net]
<b>On Behalf Of </b>Anthony Holloway<br>
<b>Sent:</b> Friday, November 01, 2013 2:44 PM<br>
<b>To:</b> Cisco VoIP Group<br>
<b>Subject:</b> [cisco-voip] Unicast MOH and MRG Round Robin<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">All,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I have read and re-read the sections on MOH and MRG[L]'s and I still cannot seem to figure this one out. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I have an MRG with four MOH servers. The phones are using the sampleaudio MOH. Only one MOH server in my MRG has streams active. It's currently at 140 streams according to RTMT. The remaining three show 0 active streams. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Traces show the one MOH server being selected all the time, as the first resource in the group, to be sent an allocation request, and it responds; therefore, it gets used. The remaining MOH servers go unused. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I have proven that each of the three idle MOH servers do work, by removing all but one MOH server from the MRG, and sequentially testing each one. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I'm starting to doubt my understanding of MRG resource selection as it pertains to MOH. I'm looking for confirmation or clarification on how this works.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">CUCM version is 8.6(2a). Thanks for looking. <o:p></o:p></p>
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