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<p class="MsoNormal">Hi, troubleshooting an issue where phones intermittently reset, either on hook or off hook (drops the call in progress). Logs and TAC claim it’s a network issue, but has anyone seen similar problems on Call Manager 9.1? Basically, we
want to rule out Call Manager as the culprit.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Majority of phones using SIP, models 8891 and 9951, experiencing issues similar to those outlined here: https://supportforums.cisco.com/discussion/10846666/ip-phones-randomly-rebooting<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Steps already taken:<o:p></o:p></p>
<p class="MsoNormal">- upgrade to latest firmware<o:p></o:p></p>
<p class="MsoNormal">- verify no POE errors on switch<o:p></o:p></p>
<p class="MsoNormal">- cpu, memory on UCS servers ok<o:p></o:p></p>
<p class="MsoNormal">- point phones to backup SUB, no change. Phones randomly reset when homed to Pub or Sub (both in separate locations).<o:p></o:p></p>
<p class="MsoNormal">- Wireshark to see KeepAlives dropping<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">1. Phone logs show:<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt">SEP0DD3B4E90000.cnf.xml.sgn (HTTP)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt"> 8:05:20p TCP connection timed out<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt"> 8:07:22p Falling back to different CUCM<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt"> 11:16:50p TCP connection timed out<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt"> 11:18:51p Falling back to different CUCM<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt"> 6:52:38p TCP connection timed out<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt"> 6:54:39p Falling back to different CUCM<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt"> 9:55:04a TCP connection timed out<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt"> 9:57:05a Falling back to different CUCM<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">2. Call Manager logs show:<o:p></o:p></p>
<p class="MsoNormal">- phone unregisters from Primary CUCM due to:<o:p></o:p></p>
<p class="MsoNormal">[Reason=6] ConnectivityError - Network communication between the device and Unified CM has been interrupted.<o:p></o:p></p>
<p class="MsoNormal">- phones fallback to secondary CUCM and then rehome to Primary CUCM:<o:p></o:p></p>
<p class="MsoNormal">Reason code = 28, FallbackInitiated - The device has initiated a fallback and will automatically re-register to a higher-priority Unified CM. No action is necessary.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">3. Call Manager syslogs display EndPointUnregistered:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt">Apr 01 14:34:18 %UC_CALLMANAGER-3-EndPointUnregistered: %[DeviceName=SEP0DD3B4E90000][IPAddress=10.1.10.211][Protocol=SIP][DeviceType=540][Description=User][Reason=6][IPAddrAttributes=0][LastSignalReceived=SIPConnControlInd][CallState=5286-call_initiated1][AppID=Cisco
CallManager][ClusterID=NAregion][NodeID=CCMSub]: An endpoint has unregistered<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt">Apr 01 14:36:22 %UC_-3-LastOutOfServiceInformation: %[DeviceName=SEP0DD3B4E90000][DeviceIPv4Address=10.1.10.211/24][IPv4DefaultGateway=192.168.51.1][DeviceIPv6Address=::][IPv6DefaultGateway=::][ModelNumber=CP-8961][NeighborIPv4Address=][NeighborIPv6Address=][NeighborDeviceID=][UNKNOWN_PARAMNAME:NeighborIPortID=][DHCPv4Status=1][DHCPv6Status=3][TFTPCfgStatus=1][DNSStatusUnifiedCM1=4][DNSStatusUnifiedCM2=4][DNSStatusUnifiedCM3=0][UNKNOWN_PARAMNAME:DNSv6StatusUnifiedCM1=0][UNKNOWN_PARAMNAME:DNSv6StatusUnifiedCM2=0][UNKNOWN_PARAMNAME:DNSv6StatusUnifiedCM3=0][VoiceVLAN=50][UnifiedCMIPAddress=10.1.10.5][LocalPort=50382][TimeStamp=1396377375][ReasonForOutOfService=18][LastProtocolEventSent=Sent:INVITE
sip:915138521010@10.1.10.2;user=phone SIP/2.0 Cseq:101 INVITE CallId:b4e9b08c-a3ad023c-1fec1fa7-3b9727b1@10.1][LastProtocolEventReceived=Rcvd:SIP/2.0 202 Accepted Cseq:104 REFER CallId:b4e9b08c-a3ad026a-30d892f1-02c748ba@10.1.10.211][AppID=Cisco CallManager][ClusterID=NAregion][NodeID=CCMSub]:
Information related to the last out-of-service event <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt">Apr 01 14:36:24 %UC_CALLMANAGER-6-EndPointRegistered: %[DeviceName=SEP0DD3B4E90000][IPAddress=10.1.10.211][Protocol=SIP][DeviceType=540][PerfMonObjType=2][Description=User][UserID=User1][LoadID=sip8961.9-4-1-9][AssociatedDNs=5286,5285,5242,5237,5262,5217,5284,5294,5282,#86,][MACAddress=0DD3B4E90000][IPAddrAttributes=0][ActiveLoadId=sip8961.9-4-1-9.loads][InactiveLoadId=sip8961.9-3-2SR1-1.loads][AppID=Cisco
CallManager][ClusterID=NAregion][NodeID=CCMSub]: Endpoint registered<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt">Apr 01 14:36:24 %UC_CALLMANAGER-6-DeviceDnInformation: %[DeviceName=SEP0DD3B4E90000][DeviceType=540][StationDesc=User][StationDn=5286,5285,5242,5237,5262,5217,5284,5294,5282,#86][AppID=Cisco CallManager][ClusterID=NAregion][NodeID=CCMSub]:
List of directory numbers (DN) associated with this device<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">4. Switchport configuration:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">interface GigabitEthernet3/0/x<o:p></o:p></p>
<p class="MsoNormal">switchport access vlan 10<o:p></o:p></p>
<p class="MsoNormal">switchport mode access<o:p></o:p></p>
<p class="MsoNormal">switchport voice vlan 11<o:p></o:p></p>
<p class="MsoNormal">switchport port-security maximum 3<o:p></o:p></p>
<p class="MsoNormal">switchport port-security<o:p></o:p></p>
<p class="MsoNormal">switchport port-security aging time 2<o:p></o:p></p>
<p class="MsoNormal">switchport port-security violation restrict<o:p></o:p></p>
<p class="MsoNormal">switchport port-security aging type inactivity<o:p></o:p></p>
<p class="MsoNormal">load-interval 30<o:p></o:p></p>
<p class="MsoNormal">spanning-tree portfast<o:p></o:p></p>
<p class="MsoNormal">spanning-tree bpduguard enable<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks, Tashi<o:p></o:p></p>
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