I've got a situation where i need the c1811 isr to do dual nat to two different external ip addresses to the same internal ip address - like below:
ip nat inside sourse static 192.168.1.1 ip nat inside source static 192.168.1.1
this is because the 1811 is going behind a barracuda link balancer and is going to need to do the dual nat for failover purposes. Normally, the 1811 will not do this but i got it to do it by putting route map's after the translation - as below:
ip nat inside source static 192.168.1.1 route-map nonat_static ip nat inside source static 192.168.1.1 route-map nonat_static
route-map nonat_static permit 10 match ip address nonat_static
ip access-list extended nonat_static deny ip 10.10.10.0 0.0.0.255 10.10.30.0 0.0.0.255 deny ip 10.10.10.0 0.0.0.255 192.168.14.0 0.0.0.255 permit ip any any
the reason for the route map is for nat exemption for ipsec vpn. The ipsec vpn is not needed however, but this is the only way i can get the 1811 to take the dual ip nat inside translation commands. Just wondering if this would be a recommended thing to do and if i can expect to run into any problems in the future with the 1800 maybe not doing the translations otherwise working. I can also just use the link balancer as a firewall as well and i'm thinking about doing that if the previous configuration may be problematic.