EIGRP Flashcards
What is the successor route?
The route with the lowest path metric to reach a destination.
What is the successor?
The successor is the first next-hop router for the successor route.
What is the feasible distance?
The feasible distance (FD) is the metric value for the lowest-metric path to reach a destination.
What is the reported distance?
The reported distance is the distance reported by a router to reach a prefix.
What is the feasibility condition?
The feasibility condition states that in order for a route to be considered a backup route, the reported distance must be lower than the feasible distance.
What is a feasible successor?
A feasible successor is a route that satisifies the feasibility condition and is maintained as a backup route. The feasibility condition ensures that the backup route is loop free.
What are the five EIGRP packet types and what are they used for?
Hello - Used for discovery of EIGRP neighbors and for when detecting when a neighbor is no longer available
Request - Used to get specific information from one or more neighbors
Update - Used to transmit routing and reachability information with other EIGRP neighbors
Query - Sent out to search for another path during convergence
Reply - Sent in response to a query packet
How does EIGRP support unequal-cost load balancing
EIGRP supports unequal-cost load balancing by changing EIGRP’s variance multiplier.
What is the EIGRP variance value?
The EIGRP variance value is the feasible distance (FD) for a route multiplied by the EIGRP variance multiplier.
How do you find the EIGRP variance multiplier?
The EIGRP variance multiplier can be calculated by dividing the feasible successor metric by the successor route metric.
