05-22-2015 02:57 AM - edited 03-05-2019 01:31 AM
I have WS-SUP720-3B.
When I turned it on, it was continuously entered ROMmon mode.
1. So I input command "dir bootflash:" . And there is a sup720 IOS.
2. And I was manually inputting "boot".
3. It was entry privileged mode.
4. And I did commands "boot system flash sup-bootdisk: IOS name" and "write memory". (Also sup-bootflash: )
5. reload.... but it was entry ROMmon mode again.
Hooo..
Why it was entry ROMMON mode continuously?
Please teach me ㅠ_ㅠ
Regards,
05-25-2015 09:45 PM
Thank you for your help!..
But I don't understand your opinion..
TAC... bcos.. I don't know its word.
then, what should I do now?;
05-25-2015 09:58 PM
You need to open a cisco support case, and then Technical Assistance Center (TAC) will help you to analyse and decode the logs. Use below link for opening a service request.
https://tools.cisco.com/ServiceRequestTool/scm/mgmt/case
05-25-2015 10:14 PM
05-25-2015 10:48 PM
Have you purchased cisco support (SMARTnet) for your device ?
05-25-2015 10:54 PM
My answer is No..
hmm...
Ok... thank you so much! ..even though you may night time?...ㅠㅠ
I'll search another method about its problem.
Have a nice day viviek srivastava!
05-26-2015 03:32 AM
Do a "show tech"
and upload the results, please.
05-26-2015 08:26 PM
OKOK!!
wait a minute plz
05-26-2015 08:32 PM
Ah...
I tried "show tech-support" but it was not performed to the end... because it was automatically rebooting.. that is loop-booting situation.
...I don't know what can I do.
Sorry to bothering you.
ㅠㅠmaybe is there another method ?...
05-26-2015 09:29 PM
I was checking the logs which you have provided. If you have maintanence window then try to remove power-supply2 and run the system on only single power-supply. I'm asking bcos of below log:
00:01:11: %C6KPWR-SP-4-PSREDUNDANTMISMATCH: power supplies rated outputs do not match.
Other thing is that, some logs shows hardware issue as well, details given below:
Your log (twice):
00:01:10: %C6KERRDETECT-SP-2-SWBUSSTALL: The switching bus is experiencing stall for 3 seconds
00:01:10: %C6KERRDETECT-SP-2-SWBUSSTALL: The switching bus is experiencing stall for 3 seconds
Similer Cisco's debug:
%C6KERRDETECT-SP-4-SWBUSSTALL: The switching bus is experiencing stall for 3 seconds
The switch reports these error messages:
%C6KERRDETECT-SP-4-SWBUSSTALL: The switching bus is experiencing stall for 3 seconds
%C6KERRDETECT-SP-4-SWBUSSTALL_RECOVERED: The switching bus stall is recovered and data traffic switching continues
The %C6KERRDETECT-SP-4-SWBUSSTALL message indicates the switching bus is stalled and data traffic is lost.
The %C6KERRDETECT-SP-4-SWBUSSTALL_RECOVERED message indicates that the switching bus is no longer stalled, and data traffic can continue.
Basically, if any one module on the system bus hangs then the supervisor detects a timeout and tries to recover on its own. If a module was in the process of being installed then that is a very possible cause of these messages since this can cause a bus stall while the module gets seated into the backplane.
05-26-2015 11:12 PM
I really appreciate all the trouble you've gone through!
I don't know you help me continuously...
As you advice that, I did. but I couldn't solve my problem.
By the way, I saw the below photo sentence. (Min. SP ROMMON: 8.4(2) )
What is the meaning??
Instead of this SP, I changed to another one.
After that, there is no loop-booting...
I think below photo SP is fault?...
Maybe you know?
05-26-2015 11:23 PM
This is something which we overlooked in the "sh ver" output. Happy to know that you resolved it.
Also error logs indicates same thing:
00:01:10: %C6KERRDETECT-SP-2-SWBUSSTALL: The switching bus is experiencing stall for 3 seconds
05-26-2015 11:39 PM
Ah,.....correct..ㅠㅠ
I really thank for your help.
vivek srivastava, CHARLES HILL
I resolved its problem thanks to you.
Thank you so much again ^^
Have a nice day!
05-26-2015 11:56 PM
Glad you got it resolved.
Thank you for the update.
05-27-2015 12:29 AM
^^ God bless you.
05-26-2015 11:31 PM
To get to the end of the show tech support quicker, enter
config t
terminal length 0
exit
show tech.
I would also send the output to a file instead of copying and pasting the show tech.
to change terminal length back to the default enter
config t
terminal length 24
exit
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