Upgrading firmware on C5210 availability pair (order of install)

[Steve_Ballantyn]

I have two C5210 controllers in an availability pair. I need to perform an upgrade and this will be the first one I have done since the pair went up.

According to an Extreme KB ...

In a High Availability pair when upgrading the Extreme Wireless Controller Local AP's will fail over to the backup controller and show as Foreign. In order to upgrade the AP's they must be manually released back to the Primary/Local controller. Check to see AP upgrade behavior settings under the AP menu/ Global Controlled upgrade to manually upgrade AP's Option 2 Always upgrade AP to default image (overrides Controlled Upgrade settings)

I normally do this at 2:00AM and sleep through it! But if I manually have to move the AP's back to the other controller - that is a no go.

Can I do this ??

1. Upgrade the secondary controller right now (which presently has zero local AP's, and 100% foreign).
2. Download and *schedule* the upgrade for the primary controller at 2:00AM.
3. When the AP's try to fly over to the secondary controller, they will be forced into an upgrade.

Or - is there a preferred order of doing this?

[Craig_Guilmette]

Hello Steve
No that will not work as the AP's will only upgrade when they have been manually rebooted when connected to their local controller. The only thing I can think of is to upgrade the foreign controller then shut it off. Then schedule the local controller for some time at night when nobody is using the wifi and when the controller goes down and comes back up from the upgrade it will then automatically upgrade all the AP's. BUT there will be an outage for wifi users. The only other option would be to schedule AP maintenance after the controller has been upgraded to reboot the AP's during the night doing the controllers during the day 1 at a time to prevent any outage.