1. Configure and verify EIGRP routing
Task 1: Configure EIGRP routing
Step 1: Enter router configuration mode
Step 2: Configure network to advertise
Step 3: Save the configuration
Task 2: Examine EIGRP neighbor adjacencies
show ip eigrp neighbors
Task 3: Verify EIGRP Routing
show ip protocols
show ip route
2. Calculating the EIGRP Metric
Task 1: Verify EIGRP Configuration
Step 1: Examine the routing table of each router and verify that there is a path to every network in the topology.
Step 2: Document the default K values used by EIGRP
Step 3: Document the EIGRP metric for every network on each router
Task 2: Change the EIGRP Metric Formula
Step 1: By default, EIGRP uses the K1 and K3 metrics. Change the EIGRP metric formula to use K1, K2, and K3. These values should be set to one. Make sure the values for K4 and K5 are set to zero.
Note: When the EIGRP metrics are changed, the routers will loose their neighbor adjacency. Do not let this concern you. When each router is configured with the same formula for calculating best path, the routers will reform their adjacencies.
Step 2: Verify that the correct K values are configured for each router
Step 3: Document the EIGRP metric for every network on each router
Step 4: Change the EIGRP metric formula to use K1, K2, K3 and K4. Make sure the value for K5 is set to zero.
Step 5: Verify that the correct K values are configured for each router.
Step 6: Document the EIGRP metric for every network on each router
3. Investigating Successor and Feasible successor
Task 1: Verify EIGRP Configuration
Step 1: Examine the routing table of each router and verify that there is a path to every network in the topology.
Step 2: Verify that each router has two neighbors in its table
Step 3: Document which path in the Topology table that is the successor and feasible successor for each network.
Task 2: Observe the EIGRP finite state machine
Step 1: Turn on debugging feature that will display DUAL FSM notifications on each router
Step 2: Change the EIGRP metric formula on R1 to use only the K1 value.
Step 3: Based on the output from R2 and R3, the neighbor was down due to a k value mismatch
Step 4: document any change in the topology table
Step 5: Determine the difference in the routing table
Step 6: Document changes in each router's neighbor table.
Task 3: Observe Topology Notification Messages
Step 1: Turn off all debugging feature for R1 only
Step 2: Change the EIGRP metric formula on R1 back to the default values
Step 3: Observing the DUAL notification message on R1
Step 4: How did the DUAL FSM handle the change in topology when the route to R1 came back up?
