I've worked with the simulator and my lab all weekend trying to come up with some way to get two links of unequal value to load balance over EIGRP. I can not for the life of me get EIGRP to put both links in the IP table because the AD of the slow link is so far away from the FD of the fast link, short of making them equal values. This is very much true to real life and it bothers me that I can not make it work. I'm less concerned about testing now and more concerned about uncovering a truth.
No mater the values used for BW and Delay on either link, the difference between FD/AD for any given route is negligable. And because the Feasibility condition says AD must be less than successor's FD, that pretty much means you could never have, say, a 2:1 ratio on your links...and that means a variance of anything over 1:1 (equal cost) is impossible to achieve. That means unequal cost load balancing is nothing but a theory that can not be achieved in practical terms, am I correct? Is anyone really doing this?
How on earth does one get the AD to be less than the FD and still maintain a true ratio of the link speed?