Which commands will display the feasible successors, the feasible distance, and the advertised distance for networks learned by a router?

A. show ip eigrp topology

B. show ip route
C. show bgp neighbors
D. show ip eigrp traffic
E. show ip route eigrp

Explanation:
To view the feasible successors, the feasible distance, and the advertised distance, you would use the show ip eigrp topology command. A sample output of this command is below.

The table lists all routes to networks and their advertised distance and feasible distance. This information is used to select the successor and feasible successor for each network. Before a route can be considered as a feasible successor or backup, the feasible distance of the route must be a larger value than the advertised distance.

The following information can be extracted from this output:
• The route 15.10.0.0/16 has a feasible successor. If you examine the feasible and advertised distances in the brackets next to the two potential feasible successor routes [feasible distance/advertised distance], you will see that for the route 15.10.0.0/16 via 10.10.5.1, the feasible distance of the route is greater (2594586) than the advertised distance (2448152), which qualifies it as a feasible successor.
• The route 65.0.0.0/8 does not have a feasible successor. The route 65.0.0.0/8 via 10.20.1.6 has a feasible distance (2589779) that is less than the advertised distance (2672569), so it does not qualify.

The router at 10.20.0.1 is directly connected to the networks 65.0.0.0/8 and 150.10.0.0/16. This can be deduced by the fact that the address 10.20.0.1 is the source of the successor routes for those networks.
The route to 200.10.10.0/24 is undergoing recomputation, as evidenced by the line FD is Inaccessible. It also tells you that Router2 sent a query to 10.1.1.2 and is waiting for a reply, as evidenced by the line Remaining replies: via 10.1.1.2, r, Serial 0.
The route to the 10.0.0.0/8 network is showing a convergence problem, as evidenced by the code SIA to the left of its entry. This stands for Stuck In Active. An active state is present when the local router has queried for a new route to the network. Stuck in Active occurs when no response has been received, and the local router marks it SIA.
The show ip route and the show ip route eigrp commands simply display the routing table, which does not display the advertised distance. Below is an example of the show ip route command executed on a router running EIGRP:

The show ip eigrp traffic command does not show feasible successors, feasible distance or advertised distance. It displays statistics on hellos, updates, queries, replies and acknowledgments. Sample output is shown below:

Router# show ip eigrp traffic
IP-EIGRP Traffic Statistics for process 100
Hellos sent/received: 215/212
Updates sent/received: 7/25
Queries sent/received: 2/0
Replies sent/received: 0/2
Acks sent/received: 21/17

The show ip bgp command displays information involving BGP and has nothing to do with EIGRP.

Objective:
Layer 3 Technologies
Sub-Objective:
Configure and verify policy-based routing

References:
Cisco IOS IP Routing: EIGRP Command Reference > show ip eigrp topology