> I thought Cisco removed the stack decoder because it never worked and they
> were> unwilling to provide us with the same tool TAC has and unable to
provide a
> stupid enough version that they think their customers deserve.
It's out there, improved and working just fine ->
http://www.cisco.com/stack/stackdecoder.shtml
It's not very good at searching the cause of the problem but it decodes
stack trace just fine. You can look at the results of the decode and
identify the process in which crash occurred.
After that I would suggest searching bug navigator for known bugs in the
feature that this routing represents.
On multiprocessor routers (7500 with VIP) it's not as easy as on low end
routers, but you can still get more detailed information than from the
crashlog.
Here is an example how I use it:
FROM STACK TRACE::
Spurious interrupts: 2
System was restarted by bus error at PC 0x6064C95C, address 0xB0D0B0D
7200 Software (C7200-IS-M), Version 12.0(3), RELEASE SOFTWARE (fc1)
Compiled Tue 09-Feb-99 08:37 by phanguye (current version)
Image text-base: 0x60008900, data-base: 0x60CF4000
Stack trace from system failure:
FP: 0x61727D20, RA: 0x6064C95C
^^^^^^^^^^^
FP: 0x61727D40, RA: 0x6064CA74
^^^^^^^^^^^
FP: 0x61727D60, RA: 0x6064E1A0
^^^^^^^^^^
FP: 0x61727D98, RA: 0x6036DE1C
FP: 0x61727DB0, RA: 0x6036DE08
FROM STACK DECODE:
RA: 0x6064C95C[dirresp_process_drmsrcomQ_staticport(0x6064c918)
RA: 0x6064CA74[dirresp_process_drmsrcomQ(0x6064ca0c)
RA: 0x6064E1A0[dirresp_main(0x6064e05c)
ALL THIS points to Director Respond process. So, I serach for DRP in BUG
NAVIGATOR: ( searched DRP as a keyword)
and BINGO! Bug Id : CSCdm24281
Headline router crash at dirresp_process_drmsrcomQ_staticport
Product distdirector Model
Component drp Duplicate of
Severity 2 Status R
Version Found 12.0(3)S0303 Fixed-in Version 12.0(4.5) 12.0(4.5)T
11.3(9.6)T 12.0(4.6)S 11.3(9.6)NA 11.3(9.6)AA 12.0(5.00.02)PI06
12.0(4.6)W05(11.00.09)
Release Notes
DRP router crashes with a "Spurious memory access". No work around
I would say it's 100% hit.
Mike Axelrod
Digital Island
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