Load-balancing 2 T1's on 1720 Router.

[MarksSE]

Hi. I'm trying to load-balance 2 T1's on a 1720 Router. Serial0 has T1 #1 and Ethernet0 has T1 #2. FastEthernet0 goes to my firewall. I have two routes setup in the router, they are:
#ip route 0.0.0.0 0.0.0.0 Serial0
#ip route 0.0.0.0 0.0.0.0 Ethernet0

The routes USED to have metrics on them, but the Cisco TAC engineer told me to take off the metrics and that the load-balancing would then kick in, which I did, - and which the load-balancing STILL does NOT work. The case is still open but the TAC engineer is very unresponsive getting back with me. He told me to try traceroutes to see the load-balancing in action; I have done that and all the traffic still goes through Serial0. Any ideas???

Here's what the interfaces look like:
!
interface Ethernet0
description SECONDARY T1 Line.
bandwidth 1544000
ip address x.x.x.x 255.255.255.192
full-duplex
!
interface FastEthernet0
description External Network
bandwidth 10000000
ip address x.x.x.x 255.255.255.192
ip nat inside
speed auto
full-duplex
!
interface Serial0
description PRIMARY T1 Line.
bandwidth 1544000
ip address x.x.x.x 255.255.255.252
no fair-queue
service-module t1 timeslots 1-24
!

-Mark

 

[Ru55ell]

Where are you Natting outside?

 

[MarksSE]

Oh, I DID have 'ip nat outside' on Ethernet0. Do I need to put it back on it? I forgot what that would do...

 

[Ru55ell]

I think you need to nat outside on both interfaces you want to load balance on or take Nat out all together.

 

[SR7758]

MarksSE, did you ever get this to work? What did you do?
Thanks,
SR

S.R.

 

[MarksSE]

Yes, it is working now. It turned out to be the Radware Linkproof load balancer that sits besides my routers. Once I re-configured the new network on it, everything started working correctly.

-Mark