The neighbor and topology tables are used by DUAL to build the routing table.
In EIGRP, the passive route status in the topology table indicates a route to a network that is not an EIGRP neighbor, while the active route status indicates a route to a network that is being actively queried and computed by the EIGRP router as a potential successor for the routing table.
Neighbor Table, topology and feasible successor
1. As new neighbors are discovered, entries are placed in a neighbor table 2. If hello packets are not received within the hold time, DUAL must recalculate the topology. 3. The reported distance is the distance to a destination as advertised by a neighbor.
The EIGRP topology table is a database that stores the network topology information learned by the EIGRP routing protocol. It contains details about neighboring routers, their IP addresses, metric values, and the network paths to reach destination networks. This information is used to calculate the best routes to different destinations in the network.
EIGRP
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It is a backup route that is stored in the topology table.
Add the command no auto-summary on all routers.Change the network statements to include a wildcard mask.Adjust the EIGRP hello timers to account for the network delay.Add the command eigrp log-neighbor-changes on all routers.
This means eigrp with AS 50 has been configured to use 10 % of the configured bandwidth on the interface.
Query neighbours for new route and search topology table for a feasible successor
The packet is sent to discover neighbors within the EIGRP network.
bobo The packet is sent to discover neighbors within the EIGRP network. The packet is sent to search for network devices within an EIGRP network. The packet is used to propagate routing information within the EIGRP network. The packet is used to send an unreachable reply to another router within the EIGRP network.