i have tried to configure LoadBalancing to use it for DSL lines.
First, i want to do it in the LAB where there are no adsl modules so i used 3 2801 and connect them with fastethernet.
I saw an old discussion so i only configured 3 things:
a)Globally IP cef (default)
b)2 ip routes: ip route 0.0.0.0 0.0.0.0 faste 0/0 and
ip route 0.0.0.0 0.0.0.0 vlan5
c)ip nat with route map:
route-map conn1 permit 10
match interface FastEthernet0/0
route-map conn2 permit 10
match interface Vlan5
ip nat pool connection2 10.10.1.1 10.10.1.1 netmask 255.255.255.0
ip nat pool connection1 10.10.2.1 10.10.2.1 netmask 255.255.255.0
ip nat inside source route-map conn1 pool connection1 overload
ip nat inside source route-map conn2 pool connection2 overload
i had to use vlan 5 because it is the on;y way the 4-port switch module can act as point-to-point interface.
Seperately it works fine: i shut on interface it works, i shut the other it works. When both are up, only one is performing nat.