cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
662
Views
20
Helpful
6
Replies
Stacia Taylor
Beginner

3650 Software Upgrade

I am getting ready to upgrade my external switch stack and am being asked how long that this upgrade will take the network down. (It will be performed during a maintenance window.) I thought it took about 15-30 minutes but I am not sure of how long that the switch won't function during that time.

1 ACCEPTED SOLUTION

Accepted Solutions
luis_cordova
VIP Advisor
6 REPLIES 6
luis_cordova
VIP Advisor

Reza Sharifi
Hall of Fame Expert

Hi,

It depends, if you are upgrading from a very old version, I have seen the reboot time take up to about 20 minutes. If the switch is running a newer version, the reboot time can take up to 15 minutes.

HTH

Thank you for your quick response! This has been very helpful!

Leo Laohoo
VIP Community Legend

Depends what the current version is and what version intended to go to.
If the upgrade is going from one sub-version to another, like 3.6.1 to 3.6.9, then it will take about 4 minutes.
If the upgrade is going to go from one version to another, like 3.7.6 to 16.6.6, then it will take about 22 minutes because of a micro-code upgrade.

That is good to know as I am moving from one version to another! Nice to have a reference for others that are just going from a sub-version to another.

BTW, ideally it's nice to have console output during an upgrade.