Conditional NAT Possible??? dual nat pools for dual ISP's no bgp peering

[ROBERT WATSON]

I have a customer who has a 1720 with wic1 connected Frame to Sprint Using Public address set 1, If that fails there is a 2nd wic with an ISDN bri connected to ISP 2, I can get the ISDN to failover the Frame connection using weighted statics to each ISP gateway BUT I don't know how to get the secondary NAT pool to kickin with the failover. I don't think seperate route maps with separate pools will work due to the source and destination IP addressing won't change, only the intermediate routing would.

[Erick Bergquist]

Multiple pools and Route-maps work fine.

Heres something i did awhile back:

access-list 1 permit any

ip nat pool backup 10.10.10.5 10.10.10.50 netmask 255.255.255.0

ip nat pool primary 10.10.11.5 10.10.11.50 netmask 255.255.255.0

ip nat inside source route-map backup pool backup

ip nat inside source route-map primary pool primary

route-map backup permit 10

match ip address 1

match interface BRI1/0

!

route-map primary permit 10

match ip address 1

match interface Serial0/1

[Erick Bergquist]

One more thing, the serial0/1 and BRI1/0 interfaces were outside for nat.