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 184.108.40.206, located at ISP1 over FastEthernet0. If the connection with ISP1 is lost, they should use SMTP server 220.127.116.11 at ISP2 over FastEthernet1.
Generally I need outside NAT 18.104.22.168 to 22.214.171.124, which works only when default route is over FastEthernet1.
The common configuration, when 126.96.36.199 is dnat-ed to 188.8.131.52 works fine, but is not suitable in this case:
ip nat outside source static tcp 184.108.40.206 25 220.127.116.11 25
i try to use route-map, but can't make it to work:
access-list 101 permit tcp host 18.104.22.168 any eq smtp
ip local pool MS 22.214.171.124
route-map SMTPS permit 10
match ip address 101
match interface FastEthernet1
ip nat outside source route-map SMTPS pool MS