EIGRP MIN bandwidth and delay

Hello everyone,

I was recently looking at the EIGRP metric formula and I was trying to plug in the numbers. While I was successful in finding the sources and running the basic math for the EGRIP calculation I noticed that I didn't really know exactly what it was that I was plugging into the formula; which to me means I didn't understand the concept fully. At any rate what I did not understand is where min bandwidth and delay were being pulled from. Initially I thought min bandwidth was a default based on the link type that could be configured by the "bandwidth" interface command and delay also had a built in default which could be overridden by the "delay" command but my experiences after creating a lab and changing the values clearly proved it wasn't a 1:1 relationship. That being said how are those two values formulated?


Minimum bandwidth is 1544 Kbit
Total delay is 40110 microseconds