Upgrading BIG-IP LTM active/standby pair

After I upgrade the standby unit, will it automatically try to become the active unit?i understand it will go active after upgrading since failover configuration is totally different between v10 and v11.

 

 

i understand upgrading from v10 to v11 would have downtime. if i were you, i would disconnect standby unit from network and do upgrade. then disconnect active (v10) unit from network and connect v11 unit to network and test. if everything is going well, i would do upgrade active (v10) unit and finally connect it back to network.