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Cisco Bug: CSCtc12321 - %SYS-2-CHUNKINVALIDHDR seen after upgrade

Last Modified

Jan 30, 2017

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)


Following error is seen after upgrade:

%SYS-2-CHUNKINVALIDHDR: Invalid chunk header type 1 for chunk XXXXXXXX, data XXXXXXXX -Process= "Virtual Exec", ipl= 5, pid= 114,  -Traceback= 0xXXXXXXXX 0xXXXXXXXX

Process noted in the error message may vary.


This is has been seen on Cisco routers running IOS version 12.4(15)T10 - it is not yet known what other versions this may affect.  This is seen with both QoS and IPSEC configured.
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