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Beginner

4900...UNHANDLED ROMMON EXCEPTION at PC=0033d990

Hi,

last night 1 of our 4900 failed, below is the only information i can get when consoled in.

..

UNHANDLED ROMMON EXCEPTION at PC=0033d990

Vector=00000100 MSR=02021230 LR=0033e2e4

MCSR=00000000

CISR0=00000000 CISR1=20000000

DDR_ERR_DETECT=00000008

i cant get to rommon mode, during the boot sequence. (CTL_C)

the ps1 & 2  & system lights are off, fan light is green.

both power supplies have input & output power green leds.

i've removed the front modules, and flash card so that there is only a minimum config, 1 power supply and a console..

and all i get is the above..

any help would be great...

Thanks..

ive read a couple of other post that point here, like below but all point to being in rommmon mode or getting into rommon ...which i cant

Recover a Cisco IOS Catalyst 4500/4000 Series Switch from a Corrupt or Missing Image or in Rommon Mode

My other switch has the following , both of which were the same a tht etime of install.

Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500e-IPBASE-M), Version 12.2(46)SG, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Fri 27-Jun-08 17:52 by prod_rel_team
Image text-base: 0x10000000, data-base: 0x12065054

ROM: 12.2(44r)SG5
Darkside Revision 0, Jawa Revision 11, Tatooine Revision 140, Forerunner Revision 1.74

System returned to ROM by power-on

System image file is "bootflash:cat4500e-ipbase-mz.122-46.SG.bin"

cisco WS-C4900M (MPC8548) processor (revision 2) with 524288K bytes of memory.
Processor board ID JAE1350QW2Z
MPC8548 CPU at 1.33GHz, Cisco Catalyst 4900M
Last reset from PowerUp
26 Virtual Ethernet interfaces
40 Gigabit Ethernet interfaces
8 Ten Gigabit Ethernet interfaces
511K bytes of non-volatile configuration memory.

Configuration register is 0x2101

4 REPLIES 4
Highlighted
Cisco Employee

Hi,


Could you please let us know the SUP and chassi in use? Was this ever functioning?

The reason to above issue could be one of the foll:

- an incorrect boot image.
- an incorrect config register.
- a corrupted image.
- a wrong storage device.

I do understand that we are unable to break into ROMMON. I suggest we try pressing Ctrl + C when the foll prompt appears:

***** The system will autoboot in 5 seconds *****


Type control-C to prevent autobooting.
!--- Press Control-C.
Autoboot cancelled......... please wait!!!
rommon 1 > [interrupt]

You could also try removing the flash (if the image is present on the flash), as the switch will be forced to go into ROMMON. Please do let me know the ROMMON version in use.


Hope this helps!


Thank you!


Cheers!

DB

Highlighted

hi...

No supervisour, 4900m is a standalone  module...

The system has beeen running since december, with no problems..

ctrl-c does not break in, all modules and flash were removed. still can t break in.

i suspect corrupt rommon image? if thats possible??

D

This is the other module, both installed at the same time... so have the same images/settings..

ROM: 12.2(44r)SG5
Darkside Revision 0, Jawa Revision 11, Tatooine Revision 140, Forerunner Revision 1.74

System returned to ROM by power-on

System image file is "bootflash:cat4500e-ipbase-mz.122-46.SG.bin"

cisco WS-C4900M (MPC8548) processor (revision 2) with 524288K bytes of memory.
Processor board ID JAE1350QW2Z
MPC8548 CPU at 1.33GHz, Cisco Catalyst 4900M
Last reset from PowerUp
26 Virtual Ethernet interfaces
40 Gigabit Ethernet interfaces
8 Ten Gigabit Ethernet interfaces
511K bytes of non-volatile configuration memory.

Configuration register is 0x2101

Highlighted

Hi,

Didin't notice the 4900M there..sorry about that!

Regarding the error, could be due to:

- corrupted image

- bad image storage device

- SRAM degradation

Where is the image stored in? Not quite sure, but you could try booting form another location (a different slot), if that's an option.

From what I have seen with respect to similar issues, either booting from a different location or a replacement has resolved the issue.

Thank you!

Cheers!

DB

Highlighted

So.

i spoke with a cisco SE, and was telling him the problem, showed him the output i was getting and it's defo something i cant fix myself and with the device still under warranty. it's going back the possiblities..

1. the rommon image is corrupt

2. DDR the ram

3. CPU registering vector exceptions ... therefore other IC problem.

D.

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