Cisco 1841 ADSL active/active failover
I am wondering if anyone has done this before, but I am trying to configure a Cisco 1841 dual WAN interface router to offer active/active failover on DSL.
The router is running Cisco IOS software release 12.4(15)T7 and the interface cards are Cisco HWIC-ADSL-B/ST.
We use RIP (v2) as a dynamic routing protocol between the CPE and L2TP Network Server (LNS).
We have successfully achieved active/passive using DSL+DSL and DSL+ISDN. The DSL+DSL active/passive setup uses an offset-list command in the RIP configuration whereas the DSL+ISDN active/passive setup uses a floating static route via the ISDN backup interface dialer 1, e.g.
ip route 0.0.0.0 0.0.0.0 dialer1 200
The problem is that ADSL is an "always on" technology so both DSL links come up by default and the RIP default route is given to one link at the time not both.
It is worth mentioning that both DSL links terminate on different end-point discriminators or LNS. So the ideal solution is to have RIP route over both links at the same time to their respective end-point discriminators so that traffic can be evenly spread across both channels.
How can the routing configuration be done to have routing on both channels at the same time? Could the following command do the trick?
ip route 0.0.0.0 0.0.0.0 dialer1 120
Thanks very much in advance