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Beginner

switch boot loop issues

I Have a 3850 48T, via USB iv upgraded to the latest IOS and all weht well except this as below notes

-notice with upgrade install

Warning! - some ng3k filesystems may not have unmounted cleanly...
-boot loop msg after reboot, cant access it even no luck with the mode mode button

ABNORMAL_RESET_COUNT=0
BOOT=flash:packages.conf
BSI=0
CFG_MODEL_NUM=WS-C3850-48T-S
CLEI_CODE_NUMBER=IPMW800ARB
DEFAULT_ROUTER=10.1.1.1
ECI_CODE_NUMBER=466863
EI_NOPROG=1
IP_ADDR=10.1.1.15/255.255.255.0
LINUX_CMDLINE=rw console=ttyS0,9600,n8
LINUX_COREMASK=15
MAC_ADDR=1C:E8:5D:52:C8:80
MANUAL_BOOT=no
MODEL_NUM=WS-C3850-48T
MODEL_REVISION_NUM=R0
MOTHERBOARD_ASSEMBLY_NUM=73-14444-07
MOTHERBOARD_REVISION_NUM=A0
MOTHERBOARD_SERIAL_NUM=FOC184696XA
RECOVERY_BUNDLE=sda9:cat3k_caa-recovery.bin
STKPWR_ASSEMBLY_NUM=73-11956-08
STKPWR_REVISION_NUM=A0
STKPWR_SERIAL_NUM=FOC18466CWS
SYSTEM_SERIAL_NUM=FCW1847C0JT
TAN_NUM=800-37552-03
TAN_REVISION_NUMBER=A0
TEMPLATE=advanced
TERMLINES=0
USB_ASSEMBLY_NUM=73-12923-05
USB_REVISION_NUM=C0
USB_SERIAL_NUM=FOC18467ZJ5
VERSION_ID=V04
BAUD=9600
SWITCH_NUMBER=1
RANDOM_NUM=335699342

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5 REPLIES 5
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Collaborator

Re: switch boot loop issues

 

Let's wait for experts but I think you have to go back. check flash if there is still previous version; if yes, change BOOT=flash: xxx . if not, copy previous .bin file to flash and boot from it. 

 

Regards, ML
**Please Rate All Helpful Responses **

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Beginner

Re: switch boot loop issues

Hi. the switch say the follow in repeat till a certain point then it stops looping but still unable to access anything even by holder the node button when powering up or even when power up already, tried holding it for a long time. The following is all I have:

▒▒▒▒▒▒▒▒▒▒▒▒▒▒ABNORMAL_RESET_COUNT=0
BOOT=flash:packages.conf
BSI=0
CFG_MODEL_NUM=WS-C3850-48T-S
CLEI_CODE_NUMBER=IPMW800ARB
DEFAULT_ROUTER=10.1.1.1
ECI_CODE_NUMBER=466863
EI_NOPROG=1
IP_ADDR=10.1.1.15/255.255.255.0
LINUX_CMDLINE=rw console=ttyS0,9600,n8
LINUX_COREMASK=15
MAC_ADDR=1C:E8:5D:52:C8:80
MANUAL_BOOT=no
MODEL_NUM=WS-C3850-48T
MODEL_REVISION_NUM=R0
MOTHERBOARD_ASSEMBLY_NUM=73-14444-07
MOTHERBOARD_REVISION_NUM=A0
MOTHERBOARD_SERIAL_NUM=FOC184696XA
RECOVERY_BUNDLE=sda9:cat3k_caa-recovery.bin
STKPWR_ASSEMBLY_NUM=73-11956-08
STKPWR_REVISION_NUM=A0
STKPWR_SERIAL_NUM=FOC18466CWS
SYSTEM_SERIAL_NUM=FCW1847C0JT
TAN_NUM=800-37552-03
TAN_REVISION_NUMBER=A0
TEMPLATE=advanced
TERMLINES=0
USB_ASSEMBLY_NUM=73-12923-05
USB_REVISION_NUM=C0
USB_SERIAL_NUM=FOC18467ZJ5
VERSION_ID=V04
BAUD=9600
SWITCH_NUMBER=1
RANDOM_NUM=335699342

 

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Hall of Fame Community Legend

Re: switch boot loop issues

Post the complete output to the command "sh version".
Highlighted
Beginner

Re: switch boot loop issues

The switch seems locked up and if I reboot it just repeat again the msges in boot still it stop. All the status lights on the left on constantly as well

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Hall of Fame Community Legend

Re: switch boot loop issues

Can you force the switch to boot into ROMMON?
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