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Cisco Bug: CSCsz49331 - Crash @ sched.c:1227

Last Modified

Aug 01, 2017

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases


Description (partial)


A 4900M or E-series supervisor with a twingig adaptor unexpectedly reloads.  Crashdump shows the function "sched" in  "os/sched.c" at the top of the stack trace.

This bug may occur if a switch is booted with TwinGig converters
installed.  This bug may also occur when a TwinGig converter is inserted
or removed.

Note that TwinGig converters are only supported on E-series
supervisors and line cards.  This bug does not affect systems without
TwinGig converters installed.

Related Community Discussions

TwinGig converter on 4900m. Hw-module command will not work.
I'm attempting to setup a CVR-X2-SFP V02 TwinGig converter module on it. I can't execute the commands recomended on the setup guide to change the mode to Gigabite mode. The command hw-module uplink select all fails because the uplink option is not available. Show hw-module is not a recognized command either The command hw-module module m port-group p select gigabitethernet errors out because the only available option after the module number is "reset" I'm I workign with the wrong IOS? Cisco IOS Software, ...
Latest activity: Sep 20, 2012
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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  • Related Community Discussions
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