Preview Tool

Cisco Bug: CSCtf28738 - DSP crashdump message 'writing out DSP dump to file' does not invoke EEM

Last Modified

Jan 31, 2017

Products (1)

  • Cisco IOS

Known Affected Releases

12.4(15)T12 12.4(24)T2 15.0(1)M1.11 15.1(1.3)T

Description (partial)

Consider the following Digital Signal Processor (DSP) crashdump utility 

voice dsp crash-dump file-limit 10
voice dsp crash-dump destination flash:dspcrashdump

When a DSP crashes and the dspcrashdump file is written to flash: a message 
similar to the following is generated:

000336: Feb 26 20:09:13.357 EST: writing out DSP dump to file flash:dspcrashdump1

The following Embedded Event Manager (EEM) script is written to trigger off 
this message:

event manager applet detectDSPcrashDump 
 event syslog occurs 1 pattern ".*writing out DSP dump to file.*"
 action 1.0 syslog msg "DSP Crash Dump Event Detected!"

It is found by direct observation that the EEM script however, NEVER sees the
message generated by the DSP crashdump utility and hence never executes.

This behaviour may be observed on any Cisco Voice GateWay which supports the
DSP crashdump utility and the EEM feature.  The problem was first discovered 
on 12.4(15)T12 and subsequently confirmed to also affect all current 15.0 and
15.1T release trains.  It is suspected that all IOS releases are affected.
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.