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Participant

Cisco 6509E iOS Not Auto-Booted. Goes to rommon every time

I am facing a problem with a Cisco 6509 that goes into Rommon every time i restart. If i give the command


rommon 1> boot


It will pick up the IOS on the sup-bootdisk: or bootdisk: and boots up but i dont understand why on reboot it wont pick up this IOS and boot itself and why do i have to write boot command everytime on rommon.

6 REPLIES 6
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Hall of Fame Guru

Do you have a boot system variable set in your running config ?

What is your configuration register value ie. "sh ver" will tell you.

Jon

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Hall of Fame Community Legend

Post the output to the following commands:

1.  sh version;

2.  dir sup-bootdisk: and

3.  sh bootvar

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Hall of Fame Guru

Qiming

Just a bit of feedback.

I'm not sure just posting the question fron Linkedin works very well. Both Leo and myself have asked for pretty much the same information that has already been covered in that post.

It might be better if a link was simply put to that post or the user on Linkedin redirected to post here and tell us what has already been covered.

Otherwise we just duplicate what has already been covered.

Jon

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Hall of Fame Guru

Qiming

Thanks.

There was no criticism intended, just want it to work well.

Jon

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Hi Huang,

Value of confreg changed to 0x2100 in remote command switch sh bootvar so i changed it to 0X2102.After reboot its working fine.

Manikanta

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Perfect this is the solution and many time Network engineer not aware about this command.I have seen many such cases.

Your routing processor bootvar shows config reg 0x2102 but in remote command switch sh bootvar shows different config register.your both config register must be set properly i.e MSFC and SUP Engine.

Hers are some troubleshooting guiide links:

Troubleshooting Hardware and Related Issues on the MSFC, MSFC2, and MSFC2a

Catalyst 6000/6500 System Crashes Troubleshooting

IOS Catalyst 6500/6000 Resets with Error "System returned to ROM by power-on (SP by abort)"

Regards,

Ashish

TCM-NI

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