Operation of EIGRP

DUAL and the Topology Table

Figure 1 shows the topology.

The EIGRP topology table contains all of the routes that are known to each EIGRP neighbor. As an EIGRP router learns routes from its neighbors, those routes are installed in its EIGRP topology table.

As shown in Figure 2, use the show ip eigrp topology command to view the topology table. The topology table lists all successors and FSs that DUAL has calculated to destination networks. Only the successor is installed into the IP routing table.