I have a router with 2 T1s going to the one ISP, and I am doing per-destination load-balancing on these 2 T1 lines. I am about to get a 3rd T1 with a different ISP. All 3 T1s are on one router. The 1st 2 T1 are used for internet browsing from and to the internal network, and the 3rd T1 will be mainly used for bulk smtp and ftp from the internal network to the internet. However, I want to use this 3rd T1 for outgoing http when its not heavily used, but I want to make sure that when the 3rd T1 is becoming heavily used due the bulk smtp/ftp (lets say 80% of the max bandwidth) the router will no longer send outgoing http down the 3rd T1. I am pretty sure that with QoS I should be able to do that, but I need help to put me on the track to get this configured.
Thanks for the help.