Question : Problem: Cisco 1841 - how to use 2 internet connections ?

I have looked around on expert exchange and it seems to me that this should work - just not for me. I have configured my 1841 to use 2 dsl lines to the internet, but only one vill work at the time. These 2 dsl lines are at the same ISP and both lines have public ip addresses assigned to them. What I really want to do is to have 2 connections to my Ibm Tivoli Storage server from the outside and then just split the load by DNS. Or is it not just possible ?? I have posted my configuration and changed the ip addresses.

version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
service linenumber
!
hostname xxxxx
!
boot-start-marker
boot-end-marker
!
no logging buffered
!
mmi polling-interval 60
no mmi auto-configure
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
aaa new-model
!
!
aaa authentication login default local
aaa authentication login userauthen local
aaa authorization network groupauthor local
aaa session-id common
ip subnet-zero
ip cef
!
!
ip flow-cache timeout active 1
ip ips po max-events 100
no ip domain lookup
ip domain name xxxxxx

!
interface FastEthernet0/0
 description ADSL Trunk interface
 no ip address
 ip verify unicast reverse-path
 ip virtual-reassembly
 duplex auto
 speed auto
!
interface FastEthernet0/0.1
 description ADSL1 - Internet VLAN
 encapsulation dot1Q 1 native
 ip address 192.168.220.2 255.255.255.252
 ip flow ingress
 ip nat outside
 ip virtual-reassembly
 crypto map clientmap
!
interface FastEthernet0/0.2
 description ADSL2 - Internet VLAN
 encapsulation dot1Q 2
 ip address 192.168.230.2 255.255.255.252
 ip flow ingress
 ip nat outside
 ip virtual-reassembly
!
interface FastEthernet0/1
 description inside_interface
 ip address 192.16.230.2 255.255.255.0
 ip nat inside
 ip virtual-reassembly
 duplex auto
 speed auto
!
interface Vlan1
 no ip address
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.220.1
ip route 0.0.0.0 0.0.0.0 192.168.230.1
ip flow-export version 5 origin-as
no ip http server
no ip http secure-server
ip nat pool inside_out_ADSL1 192.168.220.6 192.168.220.6 netmask 255.255.255.248
ip nat pool inside_out_ADSL2 192.168.230.6 192.168.230.6 netmask 255.255.255.248
ip nat inside source list 1 pool inside_out_ADSL1 overload
ip nat inside source list 2 pool inside_out_ADSL2 overload
ip nat inside source static tcp 192.16.230.100 1500 192.168.220.7 1500 extendable
ip nat inside source static tcp 192.16.230.101 1500 192.168.230.7 1500 extendable
!
ip access-list extended inside_out_ADSL1
  permit ip 192.16.230.0 0.0.0.255 any
!
ip access-list extended inside_out_ADSL2
  permit ip 192.16.230.0 0.0.0.255 any
!
access-list 1 permit 192.16.230.0 0.0.0.255
access-list 2 permit 192.16.230.0 0.0.0.255

Answer : Problem: Cisco 1841 - how to use 2 internet connections ?

Your switch has to support vlans. Each DSL modem must be in a different VLAN. The port connected to the router must be a trunk port.