Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Community Member

Bad Checksum

I have an issue loggin into a router through telnet. When i try dialling into the router through Aux port, it tkaes me into ROMMON mode.

I see that it is configured to boot from the flash, but i guess the IOS image is corrupted as it is giving a bad checksum.

rommon 69 > confreg

Configuration Summary

enabled are:

load rom after netboot fails

console baud: 9600

boot: image specified by the boot system commands

or default to: cisco2-C3600

rommon 79 > dir flash:

File size Checksum File name

11288672 bytes (0xac4060) 0x711a c3620-is-mz.122-23a.bin (bad checksum: 0x721e)

rommon 80 >

Will reloading of the router help in resolving this problem, or do I have to load a new IOS image again?

Please help.

Regards

Navneet

1 ACCEPTED SOLUTION

Accepted Solutions

Re: Bad Checksum

xmodem is done through console port not the aux port.

Please rate helpful posts.

4 REPLIES

Re: Bad Checksum

Reloading the router will not correct an already corrupted image. I am afraid you will need to xmodem another valid image in.

Please rate helful posts.

Community Member

Re: Bad Checksum

Thanx for the Reply.

Can XMODEM be accomplished using a Auxillary connection?? Or do i need to have a console connectin to PC, and through the Hyperterminal it has to be done?

Regards

Navneet

Re: Bad Checksum

xmodem is done through console port not the aux port.

Please rate helpful posts.

Community Member

Re: Bad Checksum

Thnx a lot for your responses. it cleared my doubts.

Regards

Navneet

308
Views
0
Helpful
4
Replies
CreatePlease to create content