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Cisco 3750 IOS Upgrade Script Timeout

I'm trying to write a script to push an upgraded IOS out to our 3750 stacks but I'm not having much luck. It appears that the process is timing out as it isn't recognising the lines that are returned by the switch. I've set both the Telnet timeout values to be their maximum of 5 minutes, but when doing a manual test of the commands it took over 8 minutes before it fully completed.

I'm using the following script:

term mon

archive download-sw /overwrite anonymous:@172.30.188.16/.../c3750-ipserviceslmk9-tar.122-55.SE.tar

write

reload

${CR}

From what I can tell looking through the trace logs, the main archive command is being run and the switch is performing the action, but the script timesout before it gets to use write or reload. Can anyone shed some light on what I could change to get this process working ?

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3750

Accepted answers

All comments

theknat

Is anyone else using a script to upload new IOS versions to Cisco devices? This is a feature we are really looking to use to get our network up to the latest version but this problem is holding us up.

jonchill

If you look in the content exchange for NCM scripts I've uploaded the script we use for firmware upgrades.

theknat

The script you suggested was pretty much the same as mine but I tried it anyway and got the same results. It would appear the problem is that for some reason the last line NCM sees is "Deleting `flash:/c3750-ipservicesk9-mz.122-53.SE2' to create required space" and then it times out before it sees anything else.

I decided to monitor the console at the same time to see if anything else was reported and there was a line "Extracting images from archive into flash..." but this doesn't appear in the trace logs or the telnet debug log.

Out of interest, what have you got your Telnet/SSH timeout settings set to ?

jonchill

Connection timeout is 2 minutes and the prompt timeout is 60 seconds

oneil_brown

Have you tried this instread

archive download-sw /overwrite /reload ......