EIGRP Classic Metrics

• EIGRP uses lowest metric of the following:
  • Bandwidth
    • Lowest value across path to destination.
  • Delay
  • Load
  • Reliability
• Only Bandwidth and Delay used by default.
  • EIGRP Classic Bandwidth is 10^7 * 256/Interface Bandwidth

• K values need to be the same between neighbors.
  • Adjacency will not form if they’re different.

‘show ip protocols’ will show the K values…..

And if they’ve been changed it can be seen in running config.

If the metric weights line is removed all K values go back to default and adjacency comes back.