Eigrp Metric Calculation

EIGRP Metric Calculation:

Eigrp Metric=256x[(10.000.000/ min bw in kbps along the path)+(total delay in tens of microseconds along the path)]

Lets do an example for Eigrp Metric Calculation:

For example, We have an EIGRP topology entry like this:

R1#show ip eigrp topology 192.168.0.2/32

IP-EIGRP (AS 1): Topology entry for 192.168.0.2/32

  State is Passive, Query origin flag is 1, 1 Successor(s), FD is 409600

  Routing Descriptor Blocks:

  192.168.12.2 (FastEthernet0/0), from 192.168.12.2, Send flag is 0x0

      Composite metric is (409600/128256), Route is Internal

      Vector metric:

        Minimum bandwidth is 10000 Kbit

        Total delay is 6000 microseconds

        Reliability is 255/255

        Load is 1/255

        Minimum MTU is 1500

        Hop count is 1

Formula is:

Eigrp Metric=256x[(10.000.000/ min bw in kbps along the path)+(total delay in tens of microseconds along the path)]

So;

256x[(10000000/10000)+(6000/10)]=256x1600=409600 is the Eigrp metric for this route.