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The PIX/ASA firewall reboots continuously and the "Checkheaps" thread appears in traceback

Core issue

This issue occurs due to the presence of Cisco bug ID CSCse52050.

The problem occurs when Cisco PIX or ASA that runs software release 7.0, 7.1, or 7.2 configured with a very large access-list applied to either a nat statement or a Crypto Match statement.

Resolution

For a workaround, download and upgrade the software to any of these versions:

  • 7.0(6.14)
       
  • 7.1(2.16)
       
  • 7.1(2.34)
       
  • 7.2(1.8)
       
  • 7.2(2)
       
  • 7.2(2.2)
       
  • 8.3(0.141)
       
  • 8.3(0.34) 
       

Refer to Cisco PIX Security Appliance Software and Cisco Adaptive Security Appliance Software in order to download software for PIX and ASA.

Open a case with Cisco Technical Support with the TAC Service Request Tool in order to download software version 8.3 and for more assistance with this issue.

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