10-23-2012 10:01 AM - edited 03-07-2019 09:38 AM
Hello,
While attempting to load a new IOS (cat4500-entservicesk9-mz.150-2.SG2) onto a 4948. I put new IOS on the 4948, deleted the old IOS, and reloaded it; ensuring that IOS was to be loaded from flash. That is went I noticed the UNHANDLED EXCEPTION and the 4948 continually reboots. I, then, changed it to have it boot from TFTP (same IOS) and same problem. Does any have an idea what might be going on?
Solved! Go to Solution.
10-24-2012 08:53 AM
Hi,
Your ROMMON version is 12.2(31r)SGA, which is affected by DDTS CSCsw91043. This Bug is related to Rommon Code and you are required to upgrade it to 12.2(31r)SGA4.
Please find the link below for instructions:
http://www.cisco.com/en/US/partner/docs/switches/lan/catalyst4500/release/note/OL_9592.html#wp305422
New ROMMON file can be found at:
Note that the above link is for 4948 10 Gig Ethernet switch.
Kind Regards,
Ivan Shirshin
**Please grade this post if you find it useful.
10-23-2012 11:32 AM
Hi,
The switch might end up in a continuous reboot sequence if the boot variable is not set to the correct system image file and proper destination device. For example, the configuration register value of 0x2102 requires that a boot variable is specified by issuing the boot system flash configuration command
Example:
#boot system flash bootflash:cat4500e-ipbasek9-mz.122-53.SG2.bin
Regards,
Aru
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10-23-2012 11:56 AM
The 4948 is in ROMMON now, so I do not this those commands will work.
10-23-2012 11:20 PM
Hi,
Sorry for the late response. Please see below detail to recover from Rommon mode,
Issue the dir bootflash: command to list the files present in the bootflash, or issue the dir slot0: command to list the files present in the Compact Flash device.
Example:
rommon 1 >dir bootflash:
File size Checksum File name
--------------------------------------------------
6516904 bytes (0x6370a8) 0x7b7edb21 cat4000-is-mz.121-11b.EW
Total space = 61341696 bytes, Available = 54824664 bytes
rommon 2 >dir slot0:
File size Checksum File name
--------------------------------------------------
6516904 bytes (0x6370a8) 0x7b7edb21 cat4000-is-mz.121-11b.EW
Total space = 128057344 bytes, Available = 121540312 bytes
Note:
The reason the switch reboots continuously is because the system image file name specified does not exist, but there is a valid file in the bootflash and slot0:. Also, the system image file name specified is case sensitive. If it is not specified correctly, it causes a continuous reboot
If the required system image file present in the bootflash:, you can issue the boot bootflash:<filename> command to boot the switch. Issue the boot slot0:<filename> command if you want to load the system from the file present in slot0:
Example:
rommon 2 >boot bootflash:cat4000-is-mz.121-11b.EW
Once the switch restore, Plesae check the previous steps which i shared already to avoid continuous reload
Refer:
Regards,
Aru
*** Please rate if the post is useful ***
10-24-2012 08:16 AM
I entered the follwoing command.
boot bootflash:cat4500-entservicesk9-mz.150-2.SG2.bin
As you can see the file is in the flash.
rommon 2 >dir bootflash:
File size Checksum File name
--------------------------------------------------
19459812 bytes (0x128eee4) 0x2155b5b6 cat4500-entservicesk9-mz.150-2.SG2.bin
Total space = 61341696 bytes, Available = 41881756 bytes
While rebooting, I see the following statement in the output, but continue to receive "UNHANDLED ROMMON EXCEPTION at PC=0453ab5c".
******** The system will autoboot now ********
config-register = 0xa441
Autobooting using the first file from bootflash.....
10-24-2012 08:29 AM
Hi,
I have noticed that you have config-register set to a value 0xa441 (is it an error or a leftover of previous troubleshooting? I did not see such value being used before). Could you try setting it to default 0x2102, please? Command is "confreg 0x2102" in ROMMON or "configi-reg 0x2102" in IOS config mode.
If it still fails, please share the console logs showing complete boot sequence from boot start to the crash following by reset to ROMMON.
Kind Regards,
Ivan Shirshin
**Please grade this post if you find it useful.
10-24-2012 08:44 AM
rommon 2 >set
PS1=rommon ! >
RommonVer=12.2(31r)SGA
CV=bootflash:cat4000-i5s-mz.122-25.EWA10.bin
DiagMonitorAction=Normal
ConsecPostPassedCnt=14
IpAddr=192.168.1.2
Netmask=255.255.255.0
Broadcast=192.168.1.255
Gateway=192.168.1.10
TftpServer=192.168.1.10
ConfigReg=0xa002
BootedFileName=bootflash:cat4000-ios-promupgrade-122_25r_EWA
rommon 3 >confreg 0x2102
usage: confreg
10-24-2012 08:46 AM
Here my attempt to use boot bootflash: command.
rommon 5 >boot bootflash:cat4500-entservicesk9-mz.150-2.SG2.bin
Rommon reg: 0x00004180
############
k2diags version 5.7
prod: WS-C4948-10GE part: 73-9344-09 serial: FOX112905U3
Power-on-self-test for Module 1: WS-C4948-10GE
Port/Test Status: (. = Pass, F = Fail, U = Untested)
Cpu Subsystem Tests ...
seeprom: . temperature_sensor: .
Port Traffic: L2 Serdes Loopback ...
0: . 1: . 2: . 3: . 4: . 5: . 6: . 7: . 8: . 9: . 10: . 11: .
12: . 13: . 14: . 15: . 16: . 17: . 18: . 19: . 20: . 21: . 22: . 23: .
24: . 25: . 26: . 27: . 28: . 29: . 30: . 31: . 32: . 33: . 34: . 35: .
36: . 37: . 38: . 39: . 40: . 41: . 42: . 43: . 44: . 45: . 46: . 47: .
62: . 63: .
Port Traffic: L2 Asic Loopback ...
UNHANDLED ROMMON EXCEPTION at PC=0453ab5c
Vector=00000100 MSR=02029230 LR=0453ab24
MCSR=00000000
CISR0=00000000 CISR1=40000000
DDR_ERR_DETECT=00000000
**********************************************************
* *
* Welcome to Rom Monitor for WS-C4948-10GE System. *
* Copyright (c) 2003-2006 by Cisco Systems, Inc. *
* All rights reserved. *
* *
**********************************************************
Rom Monitor Program Version 12.2(31r)SGA
Supervisor: WS-C4948-10GE Chassis: WS-C4948
Hardware Revisions - Board: 8.5 CPLD Gill: 20
MAC Address : 00-1d-45-66-bb-ff
IP Address : 192.168.1.2
Netmask : 255.255.255.0
Gateway : 192.168.1.10
TftpServer : 192.168.1.10
***** The system will autoboot in 5 seconds *****
Type control-C to prevent autobooting.
. . .
Autoboot cancelled......... please wait!!!
10-24-2012 08:53 AM
Hi,
Your ROMMON version is 12.2(31r)SGA, which is affected by DDTS CSCsw91043. This Bug is related to Rommon Code and you are required to upgrade it to 12.2(31r)SGA4.
Please find the link below for instructions:
http://www.cisco.com/en/US/partner/docs/switches/lan/catalyst4500/release/note/OL_9592.html#wp305422
New ROMMON file can be found at:
Note that the above link is for 4948 10 Gig Ethernet switch.
Kind Regards,
Ivan Shirshin
**Please grade this post if you find it useful.
10-25-2017 07:24 AM
Hello Team,
Please, anybody can help me ?
I have the same issue, my WS-C4948-10GE can load ios normaly just rommon mode.
rommon 5 >set
PS1=rommon ! >
RommonVer=12.2(31r)SGA
CV=bootflash:cat4000-i5s-mz.122-25.EWA7.bin
ConfigReg=0x2101
DiagMonitorAction=Normal
ConsecPostPassedCnt=62
BOOT=
IpAddr=172.26.10.134
Netmask=255.255.255.192
Broadcast=172.26.10.191
Gateway=172.26.10.129
TftpServer=172.26.10.167
BootedFileName=bootflash:cat4500-entservicesk9-mz.150-2.SG11.bin
rommon 6 >
I would like to know, how I can upgrade cat4500-ios-promupgrade-122_31r_SGA7 on ROMMON MODE because he can work with this IOS cat4500-entservicesk9-mz.150-2.SG11.bin
I'm in ROMMON MODE now !!!
HELP HELP HELP HELP
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