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Cisco Bug: CSCuj32767 - ASR-CUBE: Crash with call spike configuration & hung calls with B2B HA

Last Modified

Jul 02, 2019

Products (17)

  • Cisco IOS
  • Cisco ASR 901-6CZ-F-D Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco ASR 901-4C-FT-D Router
  • Cisco ASR 901-6CZ-F-A Router
  • Cisco ASR 901-6CZ-FT-A Router
  • Cisco ASR 901-12C-FT-D Router
  • Cisco 7600 Series Route Switch Processor 720 with 10 Gigabit Ethernet Uplinks
  • Cisco ME 3600X-24CX-M Switch
  • Cisco 7600 Series Route Switch Processor 720 with Multilayer Switch Feature Card
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Known Affected Releases

15.3(3)S

Description (partial)

Symptom:
There are 2 issues:
1. Observed hung calls after sso on new active with load on following scenario:
    - Make EO call to CVP via CUBE & call gets answered with VXML gateway. Non Transcoded.
    - Then call gets transferred to Agent. This time transcoded gets inserted for codecs
      g711ulaw - g729r8 
2. Configure "call spike 80 steps 8 size 250" & pump calls at 30ps or less for about 30 mins. 
    Cube crashes with RSCCAC CALL DENIAL SCAN segmentation error.

Crash Decode:
UNIX-EXT-SIGNAL: Segmentation fault(11), Process = RSCCAC CALL DENIAL SCAN
-Traceback= 1#450fcdb12f10d0e32330b03c263708ba  :400000+38834AC :400000+7047602 :400000+3883802 :400000+388374C :400000+3883A6E :400000+7046BA7

Traceback summary
-----------------
% 0x3c834ac : __be_tw_timer_start
% 0x7447602 : __be_rsccss_timer_timeout_hdnlr
% 0x3c83802 : __be_tw_notify_do
% 0x3c8374c : __be_tw_notify
% 0x3c83a6e : __be_tw_process_expiry
% 0x7446ba7 : __be_rsccac_call_denial_scan

Conditions:
Issue one observed with any call spike configuration.
Issue two observed only with "call spike 80 steps 8 size 250" / "call spike 40 steps 8 size 250"
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