Forwarding port with two interfaces WAN to same port. CISCO 891

[Francisco Palomares]

Hi guys, I have a problem with my CISCO 891 Router.

I configured Internet failover with IPSLA, track and route map, these work fine and I want to configure port forwarding but I don't know how, I need the port forwarding working on the primary ISP(giga0) and change it when the primary ISP down and secundary (fast8) up.

I wrote this command:

ip nat inside source static tcp 192.168.1.202 3074 interface giga1 3074
and
ip nat inside source static tcp 192.168.1.202 3074 interface fa8 3074

When I write the last command, this delete the first  (I think, because has the same port and the same IP inside or the interfaces are WAN).

How I can homologate these commands? or How can I do to configure port forwarding to work with two WAN interfaces (Internet failover)?

Please Help me!

Regards.

P.S. Sorry for my bad grammar XD

[Daniele Giordano]

You must use route-map also in ip nat configuration.

Try to see this link: NAT failover with DUAL ISP on a router with Policy Based Routing

http://binaryglobal.com/blog/?p=129

Regards.