Hi,

Yes it is making active unit a standby.

1 power down the active unit to force failover to the standby unit

2 check the connectivity through standby

3 and power on the active unit.

or give (in pix os 6.3)

on primary device:

primary(config)#no failover active

check the connectivity through standby

after bring back active device by issuing below command on standby device

secondary(config)#failover active

regards

skrao