Fortinet 5003 - Manual (Page 75)

FortiGate-5140 and 5050 base backplane communication Base backplane HA configurations
FortiSwitch-5003A and 5003 Fabric and Base Backplane Communications Guide
01-30000-85717-20081205
75
To configure your HA cluster to use the base backplane interface connected
through a single FortiSwitch, the base backplane interface must be enabled as a
heartbeat interface and:
• if priorities are not equal, have the highest priority of all heartbeat interfaces
• if priorities are equal, be the first interface on the indexed heartbeat interface
list
You can satisfy these requirements in multiple ways by adjusting interface priority
or by disabling heartbeats for other interfaces. Required steps vary by the slot
position of the FortiSwitch board, the model of your FortiGate boards, and the
number and heartbeat interface list position of other interfaces enabled as
heartbeat interfaces.
Figure 31: FortiGate-5005FA2 HA through slot 1 (base1) with failover to a non-base
backplane interface (port1)