Any body know how to clear stack issues on a 6509?

Unanswered Question
Jan 18th, 2008
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I've got a supervisor card showing the following output:

Self decompressing the image : ##############################

System Power On Diagnostics

DRAM Size ..........................128 MB

Testing DRAM .......................Passed

Verifying Text Segment .............Passed

NVRAM Size .........................512 KB

Level2 Cache .......................Present

Level3 Cache .......................Present

System Power On Diagnostics Complete


Currently running ROMMON from F1 region

Boot image: bootflash:cat6000-sup2k9.8-5-3.bin

PANIC: Vlan Table write error!


System reset on software watchdog is disabled


Breakpoint Exception occurred on Jan 18 2008 13:39:10

Software version = 8.5(3)

Process ID #0, Name = Kernel and Idle

process stack top = 87fff170, stack pointer = 87fffd78

cause = 00000024

Breakpoint Exception exception happened

EPC: 80C21ED0

Traceback:

80C21ED0

80C21ED0

8103F814

81046DE8

810448A0

804C5710

80C28DA8

80C28764

800404BC

Stack content:

sp+00: 00000007 814D0B28 00000000 87FFFDAC

sp+10: BE000A00 00000007 00000000 8103F814

sp+20: 814D0B28 8107FFFF 0000003F A8805D3F

sp+30: 00004000 A8805D3F 00000000 00000000

sp+40: FEA101EC 00000000 000001EC 00004000

sp+50: 87FFFDC0 A8805D3F 00000007 81580000

sp+60: 81640000 81580000 00000004 800064E8

sp+70: 00000001 80020000 87FFFE78 81046DE8

sp+80: 00000007 81048860 00000007 81580000

sp+90: 00000000 81580000 00000007 810448A0

sp+A0: 00000007 81580000 00000004 800064E8

sp+B0: 00000001 81047054 00000006 81580000

sp+C0: 81640000 81580000 00000004 800064E8

sp+D0: 804C5710 804C56F4 00003FFF 80020000

sp+E0: 87FFFE78 80D91C18 009DBB64 00000004

sp+F0: 8000650C 009E0284 80C28DA8 80C28D90

Register content:

Status: 34040023 Cause: 01006024

AT: 81610000

V0: 00000001 V1: 00000007

A0: 00000007 A1: 814D0B28

A2: 0000001F A3: 814D0B40

T0: 87FFFDA8 T1: 00000000

T2: 00000000 T3: 00000000

T4: 00000000 T5: 7F5100B8

T6: 00000001 T7: 5100BC7F

S0: 00000007 S1: 00000007

S2: 00000000 S3: 00000006

S4: 00000005 S5: 00000000

S6: 00000000 S7: 00000000

T8: 86A2016C T9: 00A2017C

K0: 30419001 K1: 815048E8

GP: 81D9A0E0 SP: 87FFFD78

S8: 87FFFD78 RA: 80C21ED0

HIGH: 0000FFFF LOW: 00000001

BADVADDR: 6C009189 ERR EPC: 80021978

*** stack pointer is overflown cur_stack: 87fffd78 stack start: 87ffc170 stack e

nd: 87fff170

System reset on software watchdog is disabled

Nested exception occured


Anybody got any ideas? I don't have TAC access.

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pciaccio Fri, 01/18/2008 - 08:07
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Make sure that you are booting the correct image on your flash. I see from your output shows you are running ROMMON mode. You may be booting to the wrong mode. Do a Cntrl Break on the system after booting up and do a confreg in rommon and boot the system to a default. From there see if you can verify your boot image and see if it is the correct image for your system and memory.

plumbis000 Fri, 01/18/2008 - 08:40
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The thing that catches my eye is "PANIC: Vlan Table write error!" this is either a bug or bad hardware, most likely bad RAM or NVRAM, depending on what it is trying to write. If you can, I'd try to load a different version of IOS, if you are still having problems this might be a much more serious hardware issue.

Ibbywannit Fri, 01/18/2008 - 09:09
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I think you might be right. The thing is i've tried 4 supervisor cards and have got problems with all of them! From crash error -9 to repeating sofware reloads.

Another thing is it's Friday, i'm winding down looking forward to the weekend, but i know the problem will still be there when (and if!) i return on Monday.


Do you think if i obtain an image (and try installing maybe an MSFC2 daughtercard) it will sort out any issues?

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