By default, EIGRP uses only bandwidth and Delay when calculating the metric. EIGRP uses these scaled values to determine the total metric to the network:

• metric = [K1 * bandwidth + (K2 * bandwidth) / (256 - load) + K3 * delay] * [K5 /(reliability + K4)]

The default values for K are:

• K1 = 1

• K2 = 0

• K3 = 1

• K4 = 0

• K5 = 0

• K2 = 0

• K3 = 1

• K4 = 0

• K5 = 0

For default behavior, you can simplify the formula as: Metric = Bandwidth + Delay

Reference:

http://www.cisco.com/warp/public/103/eigrp-toc.html#eigrpmetrics

Yes, it is. As you know both RIP version 1 and RIP version 2 are distnace vector protocols. EIGRP is an enhanced distance vector protocol, relying on the Diffused Update Algorithm(DUAL) to calculate the shortest path to a destination within a network.

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