Dual WAN Routing

Dual Wan Routing is rather the balancing of physical links in which case the route are pooled or distributed in a round robin fashion.  Simply put, if you have 2 Internet connections, for arguments sake we will assume you have 2 adsl links, one is 1mbps (link A) and the other is 2mbps (link B), in a dual wan setup connections will alternate between links, so if you had the system routing in a ratio of 2:1 (in favor of the 2mbps link) 2 connections would go over link b for every 1 connection over link A. So, we will be having 3mbps and also if one link goes down you can re-route everything through the remaining link, this minimizes downtime and is already enough reason to consider dual wan routing.