IOS Upgrade on a 3750G stack of switches

Answered Question

Hello,

I would like to upgrade the IOS on a stack of 4 3750G's that I have. Is this upgrade only on the primary switch in the stack, or do I need to do all of them. They are connected via stacking cables.

Are there any gotcha's I should look out for?

thanks

gene

I have this problem too.
0 votes
Correct Answer by iyde about 7 years 6 months ago

I have done quite some upgrades and always used "archive download-sw /overwrite " command and have not had any issues. It takes care of setting the boot statement correctly, it removes older code from flash devices and makes sure that the code is in the flash of all the switches.

HTH.

Correct Answer by wilson_1234_2 about 7 years 6 months ago

Since all three switches had the same IOS and the same bootloader, I did not concern over the reboot sequence, I just cycled the power on all three.

I used the same IOS on all three, my stack consisted of two 24 port gigabit switches and one 48 port PoE switch.

One of the 24 port switches is the master, but I did not take any special precaution to reboot.

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (3 ratings)
Loading.
wilson_1234_2 Tue, 07/07/2009 - 07:15

Just as an addition to the document that Jon provided,

I recently did an upgrade of three stacked 3750's, had never done it before and was concerned about the gotchas as well.

I read all the posts and saw that there were a lot of them that had problems when trying to do the automatic upgrade from master switch.

For this reason, I went with the manual upgrade of all three switches separately and had no problem at all.

The same IOS worked for any hardware scenario.

I loaded the image on all three and changed the bootloader on all three members of the stack and everything was fine.

Correct Answer
wilson_1234_2 Tue, 07/07/2009 - 17:59

Since all three switches had the same IOS and the same bootloader, I did not concern over the reboot sequence, I just cycled the power on all three.

I used the same IOS on all three, my stack consisted of two 24 port gigabit switches and one 48 port PoE switch.

One of the 24 port switches is the master, but I did not take any special precaution to reboot.

Correct Answer
iyde Mon, 07/13/2009 - 03:50

I have done quite some upgrades and always used "archive download-sw /overwrite " command and have not had any issues. It takes care of setting the boot statement correctly, it removes older code from flash devices and makes sure that the code is in the flash of all the switches.

HTH.

Actions

This Discussion