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Message from (sh stacks) output

Hi all,

please could any one tell me what does the bellow output of (sh stacks) mean:-

Switch-1#sh stacks

Minimum process stacks:

Free/Size Name

4748/6000 calhoun_flash init

3924/6000 SaveCrashBuffer

5564/6000 vqpc_shim_create_addr_tbl

5548/6000 SPAN Subsystem

5532/6000 platform SPAN Subsystem

7520/12000 Init


3772/6000 Calhoun CrashBuffer

7724/9000 DHCP Client

7064/12000 Virtual Exec

Interrupt level stacks:

Level Called Unused/Size Name

3 108906458 7504/9000 StrataSwitch

4 20038222 8700/9000 EIC intr

7 264577139 8752/9000 Timer Interrupt Handler

Spurious interrupts: 64837

System was restarted by error - Signal 10, Exception code (0x0008)!, PC 0x80011


C2950 Software (C2950-I6Q4L2-M), Version 12.1(22)EA1, RELEASE SOFTWARE (fc1)

Compiled Mon 12-Jul-04 08:18 by madison (current version)

Image text-base: 0x80010000, data-base: 0x8055C000

Stack trace from system failure:

FP: 0x80C56FF8, RA: 0x8001183C

FP: 0x80C57048, RA: 0x8001105C

FP: 0x80C57098, RA: 0x801BA3BC

FP: 0x80C570B0, RA: 0x801BA3A8

FP: 0x0, RA: 0x801BA3A8


******* Information of Last System Crash **********


Using flash:/crashinfo/crashinfo_2.

C2950 Software (C2950-I6Q4L2-M), Version 12.1(22)EA1, RELEASE SOFTWARE (fc1)

Compiled Mon 12-Jul-04 08:18 by madison

Signal = 10, Code = 0x8, Uptime 4w6d

r0: 00000000, AT: 00000000, v0: 80760000, v1: 00000000

a0: A08A9828, a1: 80D94A94, a2: 00000000, a3: FFFFFFFF

t0: 0000FFFF, t1: 1000E701, t2: 10000000, t3: FFFF00FF

t4: 802CE148, t5: A091BDD8, t6: 00000000, t7: A091BDCC

s0: 80D94A94, s1: 00000000, s2: A08A96F8, s3: 00000000

s4: 808304E0, s5: A08A96F4, s6: 80830000, s7: A08A96F0

t8: 80C4CB6C, t9: 00000000, k0: 00000000, k1: 00000000

gp: 807C8900, sp: 80C56FF8, s8: A08A980F, ra: 8001183C

EPC: 00000000, ErrEPC: 80227E38, BadVA: 0x00000000, SREG: 1000E703

Cause: 0x00000008 (code 2): TLB (load or ifetch) exception

Signal 10, Exception code (0x0008)!

Frame 00: SP = 0x80C56FF8 PC = 0x8001183C

Frame 01: SP = 0x80C57048 PC = 0x8001105C

Frame 02: SP = 0x80C57098 PC = 0x801BA3BC

Frame 03: SP = 0x80C570B0 PC = 0x801BA3A8

-Traceback= 0 8001183C 8001105C 801BA3BC 801BA3A8



Re: Message from (sh stacks) output

Hello Mohammed,

I ran the output through the Output Interpreter, which came up with the following bug:


A Catalyst switch reloads when entering the command show cdp neighbor detail

if the switch is receiving a CDP packet containing IP information.


The Catalyst switch is running Cisco IOS Release 12.1(22)EA1.


Downgrade to Cisco IOS Release 12.1(20)EA2 or earlier

Are you experiencing a specific problem with your switch ?



Cisco Employee

Re: Message from (sh stacks) output

Yes, this crash is due to CSCef42212. However, it is fixed in 12.1(22)EA2, so no need to downgrade. I'd recommend upgrading to 12.1(22)EA2 or later.



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Re: Message from (sh stacks) output

Hi Bibby,

Thanks for your input,

I would like to know one thing, Is it possible to upgrade (2950) standard image to the enhanced one, as I noticed before that I can't,

please confirm, Appreciate ur kind feedback,


Cisco Employee

Re: Message from (sh stacks) output


It depends on which version of the 2950 you have. Some support only the SI image, while others will support the EI. See the following doc that details which 2950 supports EI or SI:



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