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C6509-SUP720 installation issue



I have replaced the new SUP720 card in chassis c6509 but it was going to rommon mode again and again after selecting the right image .


Kindly find the below error messages .


*** System received a Software forced crash ***

signal= 0x17, code= 0x24, context= 0x4382fd1c

PC = 0x4040e934, Cause = 0x1020, Status Reg = 0x34008102

rommon 8 >

rommon 8 >


rommon 3 > dir bootdisk:

Initializing ATA monitor library...

Directory of bootdisk:

2      80893476  -rw-     s72033-advipservicesk9_wan-mz.122-18.SXF16.bin

9120    33554432  -rw-     sea_log.dat

33424    273170    -rw-     route

22292    80858180  -rw-     s72033-adventerprisek9_wan-mz.122-18.SXF15a.bin

13973    45616     -rw-     30

13979    78426628  -rw-     s72033-advipservicesk9_wan-mz.122-33.SXH5.bin

33458    7726      -rw-     crashinfo_20190819-070044-UTC

33459    226343    -rw-     crashinfo_20190819-073619



We have tried boot the supervisor with latest IOS s72033-adventerprisek9-mz.151-2.SY12.bin and supervisor going to rommon mode due to RP failed to boot.

Kindly find the below log for your reference.


rommon 23 > boot disk0:s72033-adventerprisek9-mz.151-2.SY12.bin

Writing crashinfo to bootflash:crashinfo_SP_20190819-115811-UTC

=== Flushing messages (11:58:13 UTC Mon Aug 19 2019) ===

Buffered messages:

Queued messages:

*Aug 19 11:58:13.415: %SYS-SP-3-LOGGER_FLUSHING: System pausing to ensure console debugging output.

*Aug 19 11:58:11.907: %SYS-SP-3-LOGGER_FLUSHED: System was paused for 00:00:00 to ensure console debugging output.

*Aug 19 11:58:11.911: %PFREDUN-SP-4-AUTOBOOT: Disable autoboot for Supervisor in slot 8

*Aug 19 11:58:11.911: %PFREDUN-SP-6-ACTIVE: Sup in slot 8 is crashing due to RP failed to boot

*Aug 19 11:58:11.939: SP: Failed to send heartbeat poison message

*Aug 19 11:58:14.499: %SYS-SP-3-LOGGER_FLUSHING: System pausing to ensure console debugging output.

*Aug 19 11:58:13.907: %SYS-SP-3-LOGGER_FLUSHED: System was paused for 00:00:00 to ensure console debugging output.

*Aug 19 11:58:14.499: %OIR-SP-6-CONSOLE: Changing console ownership to switch processor

*** System received an unknown failure ***

signal= 0x0, code= 0x0, context= 0x452af624

PC = 0x41d81e64, Cause = 0x1820, Status Reg = 0x34008102

rommon 24 >


please help me out in this issue


3 Replies 3



 - Forced crash  can have several causes , such as corrupt image or hardware problem :



-- ' 'Good body every evening' ' this sentence was once spotted on a logo at the entrance of a Weight Watchers Club !

Hi Marce,


Thank you for a quick response . what will be the hardware problem in forced crash.

Giuseppe Larosa
Hall of Fame
Hall of Fame

Hello Prathamesh,

you should read the release notes for the target release


You may need to upgrade the ROMMON on your sup 720 before being able to load the new image.


Hope to help





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