Hello
If you static routing, there isn't much you can do to influence the return path, However port forwarding should work using PBR and NAT even when you have just one default route.
example:
ip nat inside source static tcp/udp <inside host> <port> interface <ISP2 interface <port>
access-list 10 remark inside host
access-list 10 permit x.x.x.x
track 10 interface <isp2 interface> line-protocol
route-map STAN permit 10
match ip address 10
set ip next-hop verify-availability <isp2 -ip) track 10
int x/x
description Inside lan
ip nat inside
ip policy route-map STAN
res
Paul
Please rate and mark as an accepted solution if you have found any of the information provided useful.
This then could assist others on these forums to find a valuable answer and broadens the community’s global network.
Kind Regards
Paul