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5508 is it safe to cancel a image download

Answered Question
Jul 16th, 2012
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  • Bronze, 100 points or more

Hi,


I started a download to a 5508 to upgrade to 7.2.110, but the connection across a vpn is slow and taking too long. Can I cancel the download w/o corrupting the current image and/or setup?


I don't see a cancel button anywere in the gui and don't want do it unless the controller will handle an incomplete download correctly.


Thanks.

Correct Answer by Saravanan Lakshmanan about 5 years 1 month ago

you can kill tftp/ftp server to stop the transfer process.

use show boot to see what has actually loaded on to the primary slot. If it is not completed the transfer then it shouldn't show anything, if you see something there and its size is lesser or obnormal to actual size then swap the image to boot with secondary or superimpose the same image again on primary.

Correct Answer by Amjad Abdullah about 5 years 1 month ago

There are two phases of the transfer:

1- transferring the file to WLC memory.

2- installing the transferred image.


If the transfer is not complete you can cancel and WLC will ignore the part that was already downloaded.

If transfer is complete then you can not cancel the install process and you have to wait for it (this phase does not usually take long time)


So you can cancel the transfer. Better always to have backp before rebooting the WLC for emergencies.


HTH


Amjad


Sent from Cisco Technical Support iPad App

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Correct Answer
Amjad Abdullah Mon, 07/16/2012 - 11:44
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There are two phases of the transfer:

1- transferring the file to WLC memory.

2- installing the transferred image.


If the transfer is not complete you can cancel and WLC will ignore the part that was already downloaded.

If transfer is complete then you can not cancel the install process and you have to wait for it (this phase does not usually take long time)


So you can cancel the transfer. Better always to have backp before rebooting the WLC for emergencies.


HTH


Amjad


Sent from Cisco Technical Support iPad App

lcaruso Mon, 07/16/2012 - 12:09
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Thanks much.

Correct Answer
Saravanan Lakshmanan Mon, 07/16/2012 - 19:20
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  • Cisco Employee,

you can kill tftp/ftp server to stop the transfer process.

use show boot to see what has actually loaded on to the primary slot. If it is not completed the transfer then it shouldn't show anything, if you see something there and its size is lesser or obnormal to actual size then swap the image to boot with secondary or superimpose the same image again on primary.

lcaruso Mon, 07/16/2012 - 19:29
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  • Bronze, 100 points or more

Thanks much.


It took over two hours to xfer, but it finally worked.


I was ready to kill it, but then I ended up getting involved in a different case, so it just kept going and going so slowly...

Saravanan Lakshmanan Mon, 07/16/2012 - 19:32
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  • Cisco Employee,

cool

code update across wan link is pain , need to have all settings to takecare delay through timeout and retry.

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