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Routers Used : 3640 w/ NM-1FE-TX IOS : c3640-jk9s-mz.124-16a Objective In this lab configure a multiarea OSPF operation, interarea summarization, external route summarization, and default routing. Scenario International Travel Agency (ITA) maintains a complex OSPF environment. The task is to optimize OSPF routing, which creates the need to design and configure multiarea OSPF on the key routers connecting Asian regional headquarters to Asterix corporate headquarters and its local sites. Step 1 Build and configure the network according to the diagram, but do not configure a routing protocol yet. Note : Ignore the ISP cloud for now. Also, the Dion-to-Tegal networks 192.168.240.0/24, 192.168.244.0/244, 192.168.248.0/24, and 192.168.252.0/24 will be configured as static routes to Null0 in Steps 5 and 6, so should be deferred until then. Configure each router with the loopback address indicated in the diagram. Be sure to configure Asterix1 with additional loopbacks of Lo0, Lo1, Lo2, and Lo3.

Routers Used : 3640 w/ NM-1FE-TX IOS : c3640-jk9s-mz.124-16a Objective : In this lab, observe the OSPF DR and BDR election processing using debug commands. Then assign each OSPF interface a priority value to force the election of a specific router as a DR. Scenario The backbone of International Travel Agency’s enterprise network consists of three routers connected using an Ethernet core. Asterix1 has more memory and processing power than the other core routers. Unfortunately, other core routers are continually elected as the DR under the default settings. In the interest of optimization, ensure that Asterix1 is elected the DR, because it is best suited to handle associated extra duties, including management of Link State Advertisements (LSA) for Area 0. Investigate and correct this situation. Step 1 Build and configure the network according to the diagram. Use the configuration files from the previous lab if available . Configure OSPF on all Ethernet interfaces. A switch or hub is req