Need help for one to one static NAT case.

Hi,

I don't if it's only me, but I am very confused.

You say in switch you have 1 VIP VLAN from which you also use IP for 1 to 1 nat and this is 1 vrf. But then you say F5 has a default route to VLAN, which I am guessing is the same VIP VLAN, but you say it is not in VRF

Then you say servers are on another vlan which again is not in the vrf. Where is it, in another vrf?

Maybe a scheme would be better

In F5 you can have different vrfs as route domains and let traffic move from one to the other by disabling strict isolation to both route domains or configure on as parent to the other.