Upgrading 3750

Answered Question
Jul 17th, 2007

We have a 3750 switch with 2 stack. Can someone please confirm the upgrade steps we have to do.

1. backup config

2. copy new image to both switch

3. set the boot statement

4. reload the switch

Quick quesition, I never upgraded a stacked switch.

1. Do we need both image on the switch? I assume we do.

2. Do we just change the boot on the master switch only?

3. Can we have 2 boot statement in case it fails to boot the new image?

thx Cisco

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Correct Answer by comjf about 9 years 6 months ago

When you upgrade the 3750 switch firmware, the master switch automatically copies the boot files to the flash of all member switches.

The configuration file is shared by all members of the stack, so yes you only need to configure the boot statements once.

Yes, I believe you can have multiple boot statements, assuming you have sufficient flash space for multiple images. Always make sure you have a console cable handy in case you need to reload the firmware via XModem though!

Good luck.

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Correct Answer
comjf Tue, 07/17/2007 - 16:04

When you upgrade the 3750 switch firmware, the master switch automatically copies the boot files to the flash of all member switches.

The configuration file is shared by all members of the stack, so yes you only need to configure the boot statements once.

Yes, I believe you can have multiple boot statements, assuming you have sufficient flash space for multiple images. Always make sure you have a console cable handy in case you need to reload the firmware via XModem though!

Good luck.

comjf Tue, 07/17/2007 - 16:05

PS, use the archive tar command to perform the upgrade

comjf Tue, 07/17/2007 - 16:29

PS, use the archive tar command to perform the upgrade (if you want to use the http interface to manage your switch and have downloaded the image with this included)

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