Configuring HA on two FPR-1010s and connecting them together

[Carlton]

Will two FPR-1010s connect to each other with no issues if one of the FPRs does not use the command listed below? Also, I'm going to apply the High Availability config individually to both devices first and connect them to each other afterwards. Anyone have experience on this topic. Any advice would help, thanks.

failover lan unit primary  <---------------------COMMAND

[Marius Gunnerud]

What software are the FTD1010 devices running? (ASA or FTD) and what software version are both running?

[MHM Cisco World]

I dont get your Q totally 
but 
you can config each FRP then connect failover link, after that each FRP detect mate and the election process is start and win will be the ACTIVE of FW HA

from cisco Doc. 

Primary/Secondary Roles and Active/Standby Status

When setting up Active/Standby failover, you configure one unit to be primary and the other to be secondary. During configuration, the primary unit's policies are synchronized to the secondary unit. At this point, the two units act as a single device for device and policy configuration. However, for events, dashboards, reports and health monitoring, they continue to display as separate devices.

The main differences between the two units in a failover pair are related to which unit is active and which unit is standby, namely which IP addresses to use and which unit actively passes traffic.

However, a few differences exist between the units based on which unit is primary (as specified in the configuration) and which unit is secondary:

• The primary unit always becomes the active unit if both units start up at the same time (and are of equal operational health).

• The primary unit MAC addresses are always coupled with the active IP addresses. The exception to this rule occurs when the secondary unit becomes active and cannot obtain the primary unit MAC addresses over the failover link. In this case, the secondary unit MAC addresses are used.

Active Unit Determination at Startup

The active unit is determined by the following:

• If a unit boots and detects a peer already running as active, it becomes the standby unit.

• If a unit boots and does not detect a peer, it becomes the active unit.

• If both units boot simultaneously, then the primary unit becomes the active unit, and the secondary unit becomes the standby unit.