Static route is added/removed very frequently!

Hello guys!

I'm new here.

Would like to hear some helpful ideas regarding an issue.

I have Fortigate 100D with FortiOS v5.2.4

It is set up with spill-over wan link load balance with 2 ISP connected to FG.

Now, the problem is static route is installed and uninstalled repeatedly.

Any ideas is appreciated.

See below configuration.

FG100Dxxxxxxxxxx # config router static FG100Dxxxxxxxxxx (static) # show config router static     edit 1         set virtual-wan-link enable     next end

FG100Dxxxxxxxxxx # get router info routing-table all Codes: K - kernel, C - connected, S - static, R - RIP, B - BGP        O - OSPF, IA - OSPF inter area        N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2        E1 - OSPF external type 1, E2 - OSPF external type 2        i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area        * - candidate default S*      0.0.0.0/0 [10/0] via x.x.x.193, wan1                   [10/0] via x.x.x.241, wan2 C       x.x.x.192/29 is directly connected, wan1 C       192.168.100.0/24 is directly connected, lan C       x.x.x.240/29 is directly connected, wan2

FG100Dxxxxxxxxxx # show sy virtual-wan-link config system virtual-wan-link     set status enable     set load-balance-mode usage-based         config members             edit 1                 set interface "wan1"                 set gateway x.x.x.193                 set spillover-threshold 10000                 set detect-server "8.8.8.8"                 set detect-failtime 2                 set detect-recoverytime 2             next             edit 2                 set interface "wan2"                 set gateway x.x.x.241                 set spillover-threshold 10000                 set detect-server "4.2.2.2"                 set detect-failtime 2                 set detect-recoverytime 2             next         end end