Re: 3560-X PoE stuck in loop on startup

hartsellda · ‎02-18-2013

I have a Catalyst 3560-X PoE that suddenly stopped working. I plugged in via console and below is the output I received. It scrolls constantly and I am unable to enter ROMMON mode or stop it from scrolling. Has anyone experienced this before or might you know what the problem is? I've read of a possible problem with the IOS version but I'm unable to verify due to not being able to stop the scrolling. Any help would be appreciated.

Switch uptime is 4 minutes, 4 seconds

cisco WS-C3560X-24P (PowerPC405) processor (revision A0) with 262144K bytes of m

emory.

Processor board ID FDO1522R2AY

00:00:45 UTC Mon Mar 1 1993: Unexpected exception to CPUvector 700, PC = FFFFFF

2C

-Traceback= FFFFFF2C

Cisco IOS Software, C3560E Software (C3560E-UNIVERSALK9-M), Version 12.2(55)SE3,

RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Compiled Thu 05-May-11 15:57 by prod_rel_team

Debug Exception (Could be NULL pointer dereference) Exception (0x2000)!

SRR0 = 0x01371580 SRR1 = 0x00029230 SRR2 = 0x01E234E8 SRR3 = 0x00029230

ESR = 0x00000000 DEAR = 0x00000000 TSR = 0x84000000 DBSR = 0x01000000

CPU Register Context:

Vector = 0x00002000 PC = 0x01E234E8 MSR = 0x00029230 CR = 0x50000033

LR = 0x01E23EAC CTR = 0x01DDF064 XER = 0xA0000010

R0 = 0x00000000 R1 = 0x041A7308 R2 = 0x00000000 R3 = 0x00000001

R4 = 0x00000035 R5 = 0x00000001 R6 = 0x041A73B0 R7 = 0x00000000

R8 = 0x00000000 R9 = 0x00000000 R10 = 0x00000008 R11 = 0x03880000

R12 = 0x50000003 R13 = 0x0B98279C R14 = 0x0174A7FC R15 = 0x00000000

R16 = 0x00000000 R17 = 0x00000000 R18 = 0x00000000 R19 = 0x00000000

R20 = 0x00000000 R21 = 0x00000000 R22 = 0x00000000 R23 = 0x041A73B0

R24 = 0x00000000 R25 = 0x041A73B0 R26 = 0x00000000 R27 = 0x00000001

R28 = 0x00000000 R29 = 0x00000035 R30 = 0x03B30414 R31 = 0x00000000

Stack trace:

PC = 0x01E234E8, SP = 0x041A7308

Frame 00: SP = 0x041A7348 PC = 0x01358D9C

Frame 01: SP = 0x041A7370 PC = 0x01E23EAC

Frame 02: SP = 0x041A73D0 PC = 0x01DDF0FC

Frame 03: SP = 0x041A73F0 PC = 0x017F9160

Frame 04: SP = 0x041A7408 PC = 0x0174AE80

Frame 05: SP = 0x041A7438 PC = 0x0172337C

Frame 06: SP = 0x041A7440 PC = 0x0174A814

Frame 07: SP = 0x041A7448 PC = 0x01EFBC68

Frame 08: SP = 0x00000000 PC = 0x01EF26E0

Leo Laohoo · ‎02-18-2013

Try downloading 12.2(55)SE6.

You can use a USB flash drive (not a portable USB-HDD) to boot the IOS from the USB stick.

hartsellda · ‎02-22-2013

Thank you for the suggestion leolaohoo. Unfortunately, I am unable to stop the scrolling so I can enter ROMMON mode. Without entering ROMMON mode, I cannot boot from the USB stick. Upon startup, the boot process hangs for about 30 seconds and then immediately jumps into the startup process before settling into the scrolling portion I have posted above. I cannot break or pause the process. Any other suggestions would be appreciated. Thanks again!

Leo Laohoo · ‎02-22-2013

Power off the appliance.
Hold down the Mode button.
Still holding the mode button, power up the appliance.
When you see the prompt, enter the command flash_init.
To boot from USB, use the command boot usbflash0:iOS.bin

Sent from Cisco Technical Support iPhone App

hartsellda · ‎02-27-2013

Thanks leolaohoo. I was able to get to ROMMON mode by doing what you suggested and I was able to load the new iOS but upon completion of the load, the scrolling restarted. I verified that the new iOS was the version loaded. I believe it to be a possible hardware issue since it doesn't matter which iOS is loaded. This one may be headed for the junk heap. Thanks again for all of you help leolaohoo.

Leo Laohoo · ‎02-27-2013

If you have a valid Service Contract, you can contact your vendor and get the appliance RMA-ed.

s.aun_ali · ‎08-15-2016

I am having the same issue... Is there any work around other than RMA?

Leo Laohoo · ‎08-16-2016

Create a new thread and post entire boot-up process.