ASA 5520 v7.21 Assertion Failed (Block.c)

Unanswered Question
Jan 23rd, 2008


I am facing a quite interesting situation. I just upgraded my ASA 5520 from 7.0(5) to 7.2(1) with the same config file. The problem is that all of a sudden the ASA reboots and I receive this error message:

message #65 : assertion "0" failed: file "block.c", line 874

Memory usage goes to 100%, CPU keeps low (up to 5%). Any ideas on this?

Thank you.

I have this problem too.
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ajagadee Thu, 01/24/2008 - 08:21

This looks like a software bug to me. I have seen some similar issues with 7.2(1). Is it possible for you to upgrade to 7.2(3) and let me know if you still see the issue.



m.pinheiro Thu, 01/24/2008 - 10:13

Arul, thanks for your response. Interestingly I downgraded to version 7.0(5) and it is running normally. I have this same software version on another ASA and it is running normally. Anyhow I will try to upgrade to 7.2(3) as you recommended. I will let you know the results.

m.pinheiro Mon, 05/12/2008 - 15:35


Sorry for taking so long to post here. I upgraded to version 8 and it now works perfectly fine.

Thanks once more.

Marcelo Pinheiro


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