Configure SIM-switch based on link health

FortiExtender enables you to configure automatic SIM switch based on the link health.

For more information, refer to the CLI Reference Guide.

To use this feature:

1. Configure an hmon hchk instance:

   config hmon hchk
       edit sim-health
           set protocol ping
           set interval 10
           set probe-cnt 1
           set probe-tm 2
           set probe-target 166.253.42.211
           set interface lte1
           set src-type none
           set filter loss
       next
   end
   		 

2. Link the auto-switch instance to the config hmon hchk instance:

   FX511FTQ21001152 # config lte setting modem1 auto-switch
   FX511FTQ21001152 (auto-switch) # show
   config lte setting modem1 auto-switch
       set by-disconnect disable
       set by-signal disable
       set by-data-plan disable
       set by-health-monitor enable
       config health-monitor
           set event sim-health
           set fail-cnt 3
           set recovery-cnt 2
           set recover-by-reboot enable
           set max-switches-allowed 4
           set max-switches-interval 1800
       end

Parameter	Description
event sim-health	"sim-health" refers to the config hmon hchk instance above,
fail-cnt 3	The link is deemed unusable if three pings have failed.
recovery-cnt 2	The link is considered usable if two pings have succeeded.
recover-by-reboot [disable|enable]	If enabled, the system will reboot if the following two conditions are met: max-switches-allowed max-switches-interval See below.
max-switches-allowed 5	5 switches
max-switches-interval 1800	Within 1,800 seconds