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iso corruption query

hi,

question 1.  I have a working c2950 switch but later I may get a possible ios corruption, am I correct in understanding that setting up 'rommon mode' as per below url, will automatically connect to tftp and re-upload the ios, like another backup method  ?


https://supportforums.cisco.com/blog/150396/booting-cisco-router-tftp-server
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mikey250
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mikey250
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Jan SpringerCommented:
it should work just fine.  have you given it a try?
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mikey250Author Commented:
no not yet as trying to delete my last ios on switch, but it states:  error deleting (no such file or directory), but when I do:

sh flash: it shows me my ios: c2950.....ea6.bin

the other switches I was able to delete successfully which are also 2950

when I attempted the 'hyperterminal/xmodem' to re-install it attempts to copy for half an hour or more then states no enough memory or something but only ever had 1 ios on switch, but I thought if I do that I can then attempt to delete again.

so that is where I am and once done I can then setup rommon to install the ios when I switch off the switch and back on as a test.
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Jan SpringerCommented:
what is the total memory, the  free memory and the size of the image?

and you may have to replace the flash.
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mikey250Author Commented:
for what I am doing the memory has always been enough so all I wish to do is completely delete that ios and re-install clean:

ws-c2950-24 (rc32300) revision ro 21013k bytes of memory
32 k bytes of flash-simulate non-volatile config memory
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Jan SpringerCommented:
not if the flash is bad, it's not enough.

in my experience, if there's not enough room for both, the "copy tftp flash" will first erase the current image and write the new image.
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mikey250Author Commented:
this is what I used for when I went through ccna/ccnp and never had problem before.
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Jan SpringerCommented:
i've only been configuring, installing and upgrading cisco routers for 20 years.  i've hit this wall many times.

i'm not sure what you mean by "this is what i used".
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mikey250Author Commented:
yeah no problems im not questioning your advice :)

this is what I used meaning when I went through the ccna/ccnp these were the very switches I used.
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mikey250Author Commented:
I apologies but I will have to come back to this tomorrow.  much appreciated for your patience.  at the moment I am not in a position to get more flash, unless I can somehow remove the flash from another 2950 in order to do this but if I remember correctly the other switches have the exact same amount of memory and they worked fine in deleting, that's why im puzzled.
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mikey250Author Commented:
apologies for taking timecto get back to you.  I managed to delete & re-install ios again via hyperterminal taking 2hrs or more.

appreciated.
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mikey250Author Commented:
sound advice.
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