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Routers Used : 3640 w/ NM-1FE-TX IOS : c3640-jk9s-mz.124-16a Objective In this lab, OSPF will be configured on three Cisco routers. First, configure loopback interfaces to provide stable OSPF Router IDs. Then configure the OSPF process and enable OSPF on the appropriate interfaces. After OSPF is enabled, tune the update timers and configure authentication. Scenario The backbone of International Travel Agency’s (ITA) WAN, located in Jakarta, consists of three routers connected using an Ethernet core. Configure these core routers as members of OSPF Area 0. Because the core routers are connected to the Internet, it is decided to implement security, preventing unauthorized routers from joining Area 0. Also, within the core, the network failures need to be realized quickly. Step 1 Build and configure the network according to the diagram, but do not configure OSPF yet. A switch or hub is required to connect the three routers through Ethernet. Use ping to verify the work and test connectivity

Routers Used : 3640 w/ NM-4T and NM-1FE-TX modules IOS : c3640-jk9s-mz.124-16a Objective In this lab EIGRP will be configured and the operation will be tested over discontiguous subnets by disabling automatic route summarization. Discontiguous subnets are subnets that are out of order. Finally, EIGRP will be manually configured to use specific summary routes. Scenario The International Travel Agency uses VLSM to conserve IP addresses. All LANs are addressed using contiguous subnets, but the company would like to examine the effects of discontiguous subnets using EIGRP for future reference. The existence of multiple networks is simulated by loopback interfaces on the Arief router. The WAN links are addressed using 192.168.64.0 with a 30-bit mask. Because this scheme creates discontiguous subnets, the default summarization behavior of EIGRP should result in incomplete routing tables. The problem should be resolved by disabling the default summarization in EIGRP while maintaining a route