internal GTM integrate with external LTM

I think I already have the solution internally I will work with different vlans (links) and transparent monitors to be able to detect the link status. That way it is not required to use Iquery between the two Big IP devices but only internally inside the LTM/DNS combo.

So solution is define vlan per WAN connection internally and use transparent monitors.

So simply mapping internal vlan to external WAN router

F5 internal VLAN1--> WAN1 transparent monitor F5 internal VLAN2--> WAN2 transparent monitor etc

Downside when adding a WAN router it will be needed to add another VLAN.