7 EIGRP Flashcards
What algorithm does EIGRP use?
DUAL diffusing update algorithm
What is a successor route?
The route with the lowest path metric to reach a destination
What is a Successor?
The first next-hop router for the successor route
What is Feasible Distance?
The metric value for the lowest-metric path to reach a desination
What is Reported Distance?
Distance reported by a router to reach a prefix. It is the feasible distance for a advertising router
What is a Feasibility condition?
The RD must be less than the FD calculated locally
What is a Feasible successor?
A route that satisfies the feasible condition
What is a vital component to DUAL?
The EIGRP topology table
What is in the topology table? (four)
- Network prefix
- EIGRP neighbors
- Metrics from echt neighbor
- Values used for calculating the metric
What is the topology tables P or A
Passive = active Active = computing a new path
What is the EIGRP IP?
88
How does EIGRP communicate?
Through multicast 224.0.0.10
How many type of packets doe EIGRP uses?
- Hello
- Request - to get specific information
- Update - to transmit routing and reachability
- Query - sent out search for another path
- Reply - sent in response to a query packet
What is ECMP?
Equal Cost MultiPathing
How to calculate the variance value?
Feasible distance x variance multiplier
