From M-3050/M-4050 Sensor Product Guide (Revision A):
"If you choose to run in failover mode, port 2A is used to interconnect with a standby Sensor."
Is this a terminology thing that needs to be sorted in the McAfee documentation? If sensors are indeed active-active, then I think we really should be looking at use of either 'primary' and 'secondary' or 'template' and backup' - something like that, surely? It is things like this that cause confusion, and dont really help the end user experience to be a pleasant one!