Fortinet 548B - Manual (Page 492)

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8.8.2.9 ip vrrp track ip route
This command tracks the route reachability. When the tracked route is deleted, the priority of the VRRP
router will be decremented by the value specified in the decrement argument. When the tracked route is
added, the priority will be incremented by the same.
A VRRP configured interface can track more than one route. When a tracked route goes down, then the
priority of the router will be decreased by 10 (the default priority decrement) for each downed route. By
default no routes are tracked. If you specify just the route to be tracked, without giving the optional
priority, then the default priority will be set. The default priority decrement is 10. The default priority
decrement is changed using the decrement argument.
Syntax
ip vrrp <1-255> track ip route <ip-address/prefix-length> [decrement <1-254>]
no ip vrrp <1-255> track ip route <ip-address/prefix-length> [decrement]
<1-255> - The range of virtual router ID is 1 to 255.
< 1-254 > - The range of decrement is 1 to 254.
<no> - This command removes the route from the tracked list or to restore the priority decrement to
its default. When removing a tracked IP route from the tracked list, the priority should be incremented
by the decrement value if the route is not reachable.
Default Setting
Decrement : 10
Command Mode
Interface Config