Lab1-EIGRP

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1 CN8813 Lab-1: EIGRP ROUTING Due Date: November 12, 2023 Figure 1: Lab Topology The network topology of the lab is displayed in Figure 1. Using the table below, assign appropriate IP addresses to the routers. Router IP address (g0/0) IP address of (g0/1) IP address (g0/2) R1 10.1.2.0.2/24 10.1.3.1/24 x R2 172.16.1.2/24 10.1.1.2/24 10.1.3.2/24 R3 10.1.1.1/24 10.1.2.1/24 x R4 10.2.2.2/24 10.2.3.1/24 x R5 172.16.1.1/24 10.2.1.2/24 10.2.3.2/24 R6 10.2.1.1/24 10.2.2.1/24 x Table 1 – IP Address Assignment I) Display EIGRP Tables 1. Configure EIGRP on all the routers. Use autonomous-system number 100. 2. Make sure you can ping the subnets in the other network. 3. Use the “show ip eigrp neighbors” command to display the neighbor table. 4. Use the “show ip eigrp topology” command to display the content of the topology table. This table shows you only successor and feasible successor routes. Answer the following questions using the output: ● How many routes are in the passive state in the table? ● Is there a feasible successor route to any of the subnets?

2 ● What are the advertised and feasible distances for the feasible successor route? II) Metric Calculation in EIGRP 1. Study the topology table; make sure that you know how to calculate the metrics associated with the routes in the table. 2. Configure different bandwidths on different interfaces of the routers in your device: Router Interface (g0/0) Interface (g0/1) Interface (g0/2) R1 T1 DS-0 x R2 x DS-0 x R3 T1 DS-0 X R4 T1 DS-0 X R5 X DS-0 T1 R6 T1 DS-0 X 3. Calculate the maximum possible bandwidth setting for G0/2 in R2 to satisfy the following conditions: ● R2 chooses the route to the subnet 10.1.2.0/24 through subnet 10.1.3.0/24 as the successor route. ● R2 also chooses the alternate route to subnet 10.1.2.0/24 as the feasible successor route. 4. Configure the bandwidth of G0/2 interface of R2 according to the calculation above. Display the topology table to verify the correctness of your calculation. III) EIGRP Summarization 1. Write a summarization statement for the subnets in at least one network. Choose the summarization that has the shortest subnet id. 2. Use the route summarization statement above to configure R2 such that the router only advertises the summarized route to its peer at subnet 172.16.1.0/24. 3. Show the routing tables on the routers of the other network. They should have the summary routes. IV) Convergence

3 Use the topology in Figure 2 to perform the tasks Figure 2: Lab Topology Router IP address (g0/0) IP address of (g0/1) R7 10.3.128.2/24 10.3.1.1/24 R8 10.3.128.3/24 10.3.2.1/24 R9 10.3.1.2/24 10.3.2.2/24 Table 2 – IP Address Assignment 1. Using Table 2, assign IP addresses to R7, R8 and R9 2. Assign bandwidths of 64kbps to all the serial interfaces in the topology. 3. Run EIGRP on all the routers interfaces. 4. Display the routing table of R9 and make sure that you see all the subnets, especially subnet 10.3.128.0/24. 5. Now shut down the g0/0 interface of R7, measure the time it takes for R9 to learn a new route to subnet 10.3.128.0/24. 6. Observe the convergence of EIGRP.

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