i'm trying to configure 1811 for a simple multi-homing with Reliable Static Routing Backup Using Object Tracking.
The Basic configuration with the 2 outside interfaces connected to 2 ISP works OK so far.
The problem is with the outgoing SMTP server - computers on the inside network connects to "primary" SMTP server 22.214.171.124, located at ISP1 over FastEthernet0. If the connection with ISP1 is lost, they should use SMTP server 126.96.36.199 at ISP2 over FastEthernet1.
Generally I need outside NAT 188.8.131.52 to 184.108.40.206, which works only when default route is over FastEthernet1.
The common configuration, when 220.127.116.11 is dnat-ed to 18.104.22.168 works fine, but is not suitable in this case:
ip nat outside source static tcp 22.214.171.124 25 126.96.36.199 25
i try to use route-map, but can't make it to work:
access-list 101 permit tcp host 188.8.131.52 any eq smtp
ip local pool MS 184.108.40.206
route-map SMTPS permit 10
match ip address 101
match interface FastEthernet1
ip nat outside source route-map SMTPS pool MS