I am working on the BSCI test and came across the EIGRP formula for calculating metric of routes. The problem is that how I see it the derivative of the formula will always be 0. Here is the formula ...
metric=256x(K1xBW + K2xBW/256-load + K3xdelay) x K5/reliability+K4
K1 and K3 are 0 by default.
K2, K4, and K5 are 0 by default.
So ... that means the end of that formula will always be multiplied by 0 since K5 is 0 (0/0+reliability).
What am I missing here?
Thanks in advance,
According to the command reference the version of the calculation that you have is specifically for situations where K5 is non-zero. Here is what the command reference says:
If k5 equals 0, the composite IGRP or EIGRP metric is computed according to the following formula:
metric = [k1 * bandwidth + (k2 * bandwidth)/(256 - load) + k3 * delay]
If k5 does not equal zero, an additional operation is performed:
metric = metric * [k5/(reliability + k4)]
Here is the link is you want to see more detail: