EIGRP - Network Lab documentation

EIGRP uses DUAL to calculate route metrics and to query neighboring routers in the situation described here DUAL will first mark the route in question as

Check for filters blocking EIGRP packets Verify router configurations

eigrp explained EIGRP Feasible Distance definition explained EIGRP is a distance-vector protocol originally developed by Cisco One of the major differences

poker terms explained When EIGRP loses a route and there is no feasible successor the route will go from passive to active and the router starts sending queries to its neighbors