Summarizing Routes with EIGRP

Summarizing Routes with EIGRP

Lab Objective:

The objective of this lab exercise is for you to learn and understand how to summarize routes with EIGRP. Route summarization allows the size of routing tables to be reduced by advertising a summary route for a range of multiple specific routes.

Lab Purpose:

Route summarization is a fundamental skill. With the subnetted networks of today, routing tables can grow very large due to the sheer number of network entries. In order to reduce the burden of extremely large routing tables on routers, route summarization can be used. As a Cisco engineer, as well as in the Cisco CCNA exam, you will be expected to know how to configure a EIGRP route summarization.

Certification Level:

This lab is suitable for CCNA certification exam preparation

Lab Difficulty:

This lab has a difficulty rating of 8/10

Readiness Assessment:

When you are ready for your certification exam, you should complete this lab in no more than 10 minutes

Lab Topology:

Please use the following topology to complete this lab exercise:

Task 1:

Configure the hostnames on routers R1 and R3, as illustrated in the topology. Since R1 S0/0 is the DCE end of the back-to-back Serial connection, configure R1 to send R3 clocking information at a rate of 256Kbps. Configure the IP addresses for R1 and R3 S0/0 interfaces as specified in the topology and ping between the routers to verify connectivity based on your configuration.

Task 2:

Configure the Loopback interfaces on R3 as illustrated in the topology.

Task 3:

Enable EIGRP using Autonomous System 172 on both R1 and R3 and configure EIGRP network statements for R1 and R3 S0/0 interfaces and for the Loopback interfaces on R3. Ensure that EIGRP does not perform automatic summarization at Classful network boundaries.

Task 4:

On R1, verify the EIGRP routes you are receiving from R3. You should have three routes for the 10.x.x.x/24 Loopback interfaces configured on R3 and advertised by EIGRP. Ping these IP addresses to verify connectivity.

Task 5:

Configure R3 send a summarized route for the 10.x.x.x/24 Loopback interfaces to R1.

Task 6:

Verify the EIGRP routes you are receiving from R3 on R1. You should now have one route for the 10.x.x.x/24 Loopback interfaces configured on R3 and advertised by EIGRP. Ping these IP addresses to verify connectivity.