2-2 EIGRP Load Balancing Lab Activity

Lab Exercise: Lab 2-2 EIGRP Load Balancing As a senior network engineer, you are considering deploying EIGRP in your corporation and want to evaluate its ability to converge quickly in a changing environment. You are also interested in equal-cost and unequal-cost load balancing, because your network is filled with redundant links. These links are not often used by other link-state routing protocols because of high metrics. Since you are interested in testing the EIGRP claims that you have read about, you decide to implement and test on a set of three lab routers before deploying EIGRP throughout your corporate network.
Content 2.7 EIGRP Lab Exercises 2.7.3 Lab 2-3 Summarization and Default Network Advertisement Lab Activity

Lab Exercise: Lab 2-3 Summarization and Default Network Advertisement A network engineer has been having trouble with high memory, bandwidth, and CPU utilization on her routers that are running EIGRP. Over lunch, she mentions to you that she has flapping routes in remote parts of the EIGRP autonomous system and suspects that these are the cause of the performance impediment. The engineer’s network has only one path out to the Internet and her ISP has mandated that she use 172.31.1.1/30 on the end of the backbone connection. After asking if you could take a look at her network, you discover that the routing tables are filled with 29-bit and 30-bit IP network prefixes, some of which are unstable and flapping. You observe that summarization would prompt a dramatic improvement in network performance and volunteer to implement it. She asks you to show her proof-of-concept in the lab first, so you copy the configuration files to paste into your lab routers.
Content 2.7 EIGRP Lab Exercises 2.7.4 Lab 2-4 EIGRP Frame Relay Hub and Spoke Lab Activity

Lab Exercise: Lab 2-4a EIGRP Frame Relay Hub and Spoke: Router Used As Frame Switch You are responsible for configuring and testing the new network that connects your company’s headquarters and east and west branches. The three locations are connected over hub-and-spoke Frame Relay, using the company headquarters as the hub. Model each branch office’s network with multiple loopback interfaces on each router, and configure EIGRP to allow full connectivity between all departments. To simulate the Frame Relay WAN connections, use a router with three serial ports configured as a frame switch. The router configuration is described in Step 2. Note
If your site uses an Adtran Atlas to simulate Frame Relay, use Lab 2.4b to complete this exercise.
Lab Activity

Lab Exercise: Lab 2-4b EIGRP Frame Relay Hub and Spoke: Adtran Used As Frame Switch You are responsible for configuring and testing the new network that connects your company’s headquarters, and east and west branches. The three locations are connected over hub-and-spoke Frame Relay, using the company headquarters as the hub. Model each branch office’s network with multiple loopback interfaces on each router, and configure EIGRP to allow full connectivity between all departments.
Content 2.7 EIGRP Lab Exercises 2.7.5 Lab 2-5 EIGRP Authentication and Timers Lab Activity

Lab Exercise: Lab 2-5 EIGRP Authentication and Timers As a network engineer, you have weighed the benefits of routing protocols and deployed EIGRP in your corporation’s network. Recently, a new Chief Information Officer replaced the previous CIO and outlined a new network policy detailing more robust security measures. The CIO has also drawn up specifications to allow more frequent checking between neighboring routers so that fewer packets are lost in transit during times of instability. Implement the CIO’s specifications on your network.
Content Summary In this module you learned how to efficiently configure EIGRP, a Cisco proprietary advanced distance vector routing protocol that uses the DUAL algorithm. You have learned how to configure EIGRP for your routing environment to achieve such benefits as rapid convergence and lower bandwidth utilization. You also learned how to ensure that as a network grows larger, EIGRP will operate efficiently and adjust to changes rapidly. The following areas were addressed in this module: