Chapter 9 High Availability for FortiOS 5.0 : Operating a cluster : Viewing cluster status from the CLI : About the HA cluster index and the execute ha manage command : Example: actual and operating cluster indexes do not match
  
Example: actual and operating cluster indexes do not match
This example shows get system ha status command output for same cluster of two FortiGate-5001SX units. However, in this example the device priority of the cluster unit with the serial number FG50012204400045 is increased to 200. As a result the cluster unit with the lowest serial number becomes the primary unit. This means the actual and operating cluster indexes of the cluster units do not match.
get system ha status
Model: 5000
Mode: a-p
Group: 0
Debug: 0
ses_pickup: disable
Master:128 5001_slot_7 FG50012205400050 0
Slave :200 5001_slot_11 FG50012204400045 1
number of vcluster: 1
vcluster 1: work 169.254.0.2
Master:1 FG50012205400050
Slave :0 FG50012204400045
The actual cluster indexes have not changed but the operating cluster indexes have. Also, the HA heartbeat IP address displayed for vcluster 1 has changed to 169.254.0.2.