EIGRP Maintains three tables, Which one is more important in troubleshooting process and why?

Topology Table: The topology table stores routes that it has learned from neighbor routing tables. Unlike a routing table, the topology table does not store all routes, but only routes that have been determined by EIGRP. The topology table also records the metrics for each of the listed EIGRP routes, the feasible successor and the successors. Routes in the topology table are marked as "passive" or "active". Passive indicates that EIGRP has determined the path for the specific route and has finished processing. Active indicates that EIGRP is still trying to calculate the best path for the specific route. Routes in the topology table are not usable by the router until they are inserted into the routing table. The topology table is never used by the router to forward traffic. Routes in the topology table will not be inserted into the routing table if they are passive, are a feasible successor, or have a higher administrative distance than an equivalent path

3 TABLES ? i just know the route table and the topology table !!!

Neighbor table, Topology Table, & Routing table

TOPOLOGY table is the most important while doing trouble shooting.Because it contains the best path information of all the neighbour routers connected to it. So most of the time, checking out topology table solve the root cause.

Topology Table

All three tables are important in trouble shooting.  First the neighbor table, second topology table and finally routing table. 

Routing table would be the most important table as nothing will work if the routes are not in the routing table. 

Neighbors Table, it hold all informations about neighbor routers

All three table are important. For more Complex network its better to prefer all the three tables.

In all the routing protocols tables are the key to troubleshoot any problem and as we all know EIGRP has3 tables Neighbor, Topology, and Routing. Now there could probably be a debate on which table is more important as far as the troubleshooting is concern. Let’s face it this way. Routing Table contains the best of the best route toward a destination this best route never get into the table until it has been confirmed by topology table as once the successor and feasible successors are elected only then decision taken for the best route. And neighbor table has the information about all directly connected neighbors.

So if we go with above description we could say Neighbor Table has less importance but on the other hand we cannot troubleshoot any neighbor relationship issue until we have a look at the neighbor table or we would say routing table has less importance but EIGRP does all the calculation just make the routing table.

 So all three tables are important  

Hope you find this helpful.

Thanks.