Symptom
Cisco CUBE crashes with a segmentation fault in the CCSIP_SPI_CONTROL process. The crash is seen in the following stack trace:
Exception to IOS Thread:
UNIX-EXT-SIGNAL: Segmentation fault(11), Process = CCSIP_SPI_CONTROL <<<<<
A crashinfo and a system-report with one IOSd core file are generated.
Conditions
Cisco CUBE is configured with SIP-SIP calls and is processing a high volume of calls.
Cisco CUBE Router running IOS-XE 17.12.1a or 17.12.2
SIP DTMF configuration has SIP KPML enabled in the dial-peers
VoIP Trace is enabled under voice service voip > trace
Workaround
One possible workaround is to remove SIP KPML DTMF method from the dial-peers. This can be done by removing the "dtmf-relay sip-notify sip-kpml" command from the dial-peers and leaving rtp-nte:
dial-peer voice xx voip
dtmf-relay rtp-nte
Further Problem Description
