Chapter 7 Labs

Configure OSPF Routing You have two routers connected as shown in the network diagram. All networks shown in the diagram are part of the subnetted 172.19.0.0 network. You want to use OSPF for routing on the network. However, you do not want information about the networks connected to the Fa0/0 interfaces to be shared using OSPF. In this lab, your task is to: Use the show ip interface command to identify the IP address and mask for each interface before configuring OSPF. Determine the wildcard mask to be used in the network statements to enable OSPF.RouterInterfaceSubnetWildcard MaskRouterAFa0/1172.19.0.2080.0.0.15Fa0/1/0172.19.0.00.0.0.127RouterBFa0/1172.19.0.1600.0.0.31Fa0/1/0172.19.0.00.0.0.127Because you do not want to run OSPF on the Fa0/0 interfaces, you must use specific network statements for each interface. Configure RouterA to share information about the networks connected to the Fa0/1 and Fa0/1/0 interfaces using OSPF area 0. Configure RouterB to share information about the networks connected to the Fa0/1 and Fa0/1/0 interfaces using OSPF area 0. Neither router should share information about the network connected to its Fa0/0 interface.

Configure RouterA. Select RouterA. Press Enter to get started. At the RouterA> prompt, type enable and press Enter. At the RouterA# prompt, type config t and press Enter. At the RouterA(config)# prompt, type router ospf 100 and press Enter. At the RouterA(config-router)# prompt, type network 172.19.0.208 0.0.0.15 area 0 and press Enter. At the RouterA(config-router)# prompt, type network 172.19.0.0 0.0.0.127 area 0 and press Enter. Press Ctrl + Z. At the RouterA# prompt, type copy run start and press Enter. Press Enter to begin building the configuration. Configure RouterB. Select RouterB. Press Enter to get started. At the RouterB> prompt, type enable and press Enter. At the RouterB# prompt, type config t and press Enter. At the RouterB(config)# prompt, type router ospf 100 and press Enter. At the RouterB(config-router)# prompt, type network 172.19.0.160 0.0.0.31 area 0 and press Enter. At the RouterB(config-router)# prompt, type network 172.19.0.0 0.0.0.127 area 0 and press Enter. Press Ctrl + Z. At the RouterB# prompt, type copy run start and press Enter. Press Enter to begin building the configuration.

Troubleshoot OSPF 1 You manage the network shown in the diagram. Users on the networks connected to the R1 router report that they are unable to contact computers connected to the R3 router. Documentation for the network configuration is as follows: Subnets are assigned addresses as follows:RouterInterfaceSubnetR1Fa0/0192.168.1.0/25Fa0/1192.168.1.128/25S0/1/1172.17.0.0/30R2S0/1/0172.17.0.0/30Fa0/0192.168.2.0/26Fa0/1192.168.2.128/26S0/1/1172.18.0.64/30R3S0/1/0172.18.0.64/30Fa0/0192.168.3.0/27Fa0/1192.168.3.128/27 For DCE devices, the clock rate is set to 56000. All routers use OSPF with area 0 to share information about all connected networks. No static routes are allowed. In this lab, your task is to: Troubleshoot and correct the problem. Take only the necessary actions to correct the problem you find. Use the information above to identify misconfigurations and to correct problems.

Select R1. Press Enter to get started. At the R1> prompt, type enable and press Enter. At the R1# prompt, type ping 192.168.3.30 or ping 192.168.3.158 and press Enter on the R3 router to verify the problem. At the R1# prompt, type show ip route and press Enter.Notice that R1 knows about all networks connected to R2, but has not learned about any networks connected to R3. This means that the problem is likely with the R3 router. Select R3. Press Enter to get started. At the R3> prompt, type enable and press Enter. At the R3# prompt, type show ip route and press Enter.R3 has not learned about any routes through OSPF. At the R3# prompt, type show ip protocols and press Enter. Verify the following values of the OSPF configuration:OSPF is running.Network statements include all connected networks.Network statements use the correct area number.You should notice that the area number is using 1, not 0. With OSPF, all routers must be using the same area number.A network statement is not included for Fa0/1. On R3, modify the network statements to use area 0 so that OSPF runs on all directly connected networks.At the R3# prompt, type conf t and press Enter.At the R2(config)# prompt, type router ospf 300 and press Enter.At the R3(config-router)# prompt, type no network 172.18.0.64 0.0.0.3 area 1 and press Enter.At the R3(config-router)# prompt, type no network 192.168.3.0 0.0.0.255 area 1 and press Enter.At the R3(config-router)# prompt, type network 172.18.0.64 0.0.0.3 area 0 and press Enter.At the R3(config-router)# prompt, type network 192.168.3.0 0.0.0.255 area 0 and press Enter.Press Ctrl + Z. At the R1# prompt, type show ip route and press Enter to verify the fix. At the R2# prompt, type show ip route and press Enter to verify the fix. At the R3# prompt, typpe show ip route and press Enter to verify the fix. At the R1# prompt, type ping 192.168.3.30 or ping 192.168.3.158 and press Enter to verify connectivity.

Troubleshoot OSPF 2 You manage the network shown in the diagram. Users on the networks connected to the R1 router report that they are unable to contact computers connected to the R3 router. Documentation for the network configuration is as follows: Subnets are assigned addresses as follows:RouterInterfaceSubnetR1Fa0/0192.168.1.0/25Fa0/1192.168.1.128/25S0/1/1172.17.0.0/30R2S0/1/0172.17.0.0/30Fa0/0192.168.2.0/26Fa0/1192.168.2.128/26S0/1/1172.18.0.64/30R3S0/1/0172.18.0.64/30Fa0/0192.168.3.0/27Fa0/1192.168.3.128/27 For DCE devices, the clock rate is set to 56000. All routers use OSPF with Area 0 to share information about all connected networks. No static routes are allowed. In this lab, your task is to: Troubleshoot and correct the problem. Take only the necessary actions to correct the problem you find. Use the information above to identify misconfigurations and correct problems.

Select R1. Press Enter to get started. At the R1> prompt, type enable and press Enter. At the R1# prompt, type ping 192.168.3.30 or ping 192.168.3.158 and press Enter. At the R1# prompt, type show ip route and press Enter.Notice that R1 knows about some of the networks connected to R2, but it does not know about network 172.18.0.64/30, nor has it learned any routes from R3. This means the problem is on either R2 or R3, possibly on the serial link between the two routers. Select R2. Press Enter to get started. At the R2> prompt, type enable and press Enter. At the R2# prompt, type show ip route and press Enter.Because network 172.18.0.64/30 shows as a directly connected route in the routing table, you know that the interface is up and has been configured with a correct IP address. At the R2# prompt, type show ip protocols and press Enter. Verify the following values of the OSPF configuration:OSPF is running.Network statements include the 172.18.0.64/30Network statements use the correct area number.Notice that there is a network statement for network 172.18.0.0/30. However, this statement will not enable OSPF on the 172.18.0.64/30 network. On R2, modify the network statement to use the correct IP address and wildcard mask so that OSPF is enabled on the Serial0/1/1 interface.At the R2# prompt, type conf t and press Enter.At the R2(config)# prompt, type router ospf 200 and press Enter.At the R2(config-router)# prompt, type no network 172.18.0.0 0.0.0.3 area 0 and press Enter.At the R2(config-router)# prompt, type network 172.18.0.64 0.0.0.3 area 0 and press Enter.Press Ctrl + Z. At the R1# prompt, type show ip route and press Enter to verify the fix. At the R2# prompt, type show ip route and press Enter to verify the fix. At the R3# prompt, typpe show ip route and press Enter to verify the fix. At the R1# prompt, type ping 192.168.3.30 or ping 192.168.3.158 and press Enter to verify connectivity.

Explore OSPF You want to explore the effects of various configuration parameters on OSPF routing. All routers are currently configured to use OSPF to share information about all connected networks. Use the following subnet addresses as you explore the effects of OSPF: RouterInterfaceSubnetRouterAFastEthernet0/0192.168.1.0/25FastEthernet0/1192.168.1.128/25FastEthernet0/1/0192.168.10.0/24RouterBFastEthernet0/1/0FastEthernet0/0192.168.100.0/25FastEthernet0/1192.168.100.128/25 In this lab, your task is to: Select RouterA. Press Enter to get started. At the RouterA> prompt, type enable and press Enter. At the RouterA# prompt, type show ip protocols and press Enter. Select RouterB. Press Enter to get started. At the RouterB> prompt, type enable and press Enter. At the RouterB# prompt, type show ip protocols and press Enter. Answer Questions 1-3. At the RouterA# prompt, type show ip route and press Enter. Answer Question 4. At the RouterA# prompt, type conf t and press Enter. At the RouterA(config)# prompt, type no router ospf 100 and press Enter to disable OSPF for all interfaces. Press Ctrl + Z. At the RouterA# prompt, type show ip route and press Enter to verify that OSPF has been disabled. On RouterA, reconfigure OSPF.At the RouterA# prompt, type conf t and press Enter.At the RouterA(config)# prompt, type router ospf 200 and press Enter to disable OSPF for all interfaces.At the RouterA(config-router)# prompt, type network 192.168.1.0 0.0.0.127 area 0 and press Enter.At the RouterA(config-router)# prompt, type network 192.168.1.128 0.0.0.127 area 0 and press Enter.At the RouterA(config-router)# prompt, type network 192.168.10.0 0.0.0.255 area 0 and press Enter.Press Ctrl + Z. At the RouterA# prompt, type show ip route and press Enter to view the routing table. Answer Question 5. On RouterA, modify the OSPF configuration.At the RouterA# prompt, type conf t and press Enter.At the RouterA(config)# prompt, type router ospf 200 and press Enter.At the RouterA(config-router)# prompt, type no network 192.168.1.0 0.0.0.127 area 0 and press Enter. On RouterB at the RouterB# prompt, type show ip route and press Enter to view the routing table. Answer Question 6. On RouterA, reconfigure OSPF.At the RouterA(config)# prompt, type no router ospf 200 and press Enter.At the RouterA(config)# prompt, type router ospf 200 and press Enter.At the RouterA(config-router)# prompt, type network 192.168.0.0 0.0.255.255 area 0 and press Enter.Notice that the subnet address and wildcard mask include all networks configured on RouterA. On RouterB at the RouterB# prompt, type show ip route and press Enter to view the routing table. Answer Questions 7-8. On RouterA, reconfigure OSPF.At the RouterA(config-router)# prompt, type no router ospf 200 and press Enter.At the RouterA(config)# prompt, type router ospf 200 and press Enter.At the RouterA(config-router)# prompt, type network 192.168.0.0 0.0.255.255 area 1 and press Enter.Notice that the network command configures OSPF for a different area.Press Ctrl + Z. At the RouterA# prompt, type show ip route and press Enter to view the routing table. Answer Question 9. On RouterA, reconfigure OSPF.At the RouterA# prompt, type conf t and press Enter.At the RouterA(config)# prompt, type router ospf 200 and press Enter.At the RouterA(config-router)# prompt, type network 0.0.0.0 255.255.255.255 area 0 and press Enter. Answer Question 10. At the RouterB# prompt, type show ip route and press Enter to test your answer.

Select RouterA. Press Enter to get started. At the RouterA> prompt, type enable and press Enter. At the RouterA# prompt, type show ip protocols and press Enter. Select RouterB. Press Enter to get started. At the RouterB> prompt, type enable and press Enter. At the RouterB# prompt, type show ip protocols and press Enter. Answer Questions 1-3. At the RouterA# prompt, type show ip route and press Enter. Answer Question 4. At the RouterA# prompt, type conf t and press Enter. At the RouterA(config)# prompt, type no router ospf 100 and press Enter to disable OSPF for all interfaces. Press Ctrl + Z. At the RouterA# prompt, type show ip route and press Enter to verify that OSPF has been disabled. On RouterA, reconfigure OSPF.At the RouterA# prompt, type conf t and press Enter.At the RouterA(config)# prompt, type router ospf 200 and press Enter to disable OSPF for all interfaces.At the RouterA(config-router)# prompt, type network 192.168.1.0 0.0.0.127 area 0 and press Enter.At the RouterA(config-router)# prompt, type network 192.168.1.128 0.0.0.127 area 0 and press Enter.At the RouterA(config-router)# prompt, type network 192.168.10.0 0.0.0.255 area 0 and press Enter.Press Ctrl + Z. At the RouterA# prompt, type show ip route and press Enter to view the routing table. Answer Question 5. On RouterA, modify the OSPF configuration.At the RouterA# prompt, type conf t and press Enter.At the RouterA(config)# prompt, type router ospf 200 and press Enter.At the RouterA(config-router)# prompt, type no network 192.168.1.0 0.0.0.127 area 0 and press Enter. On RouterB at the RouterB# prompt, type show ip route and press Enter to view the routing table. Answer Question 6. On RouterA, reconfigure OSPF.At the RouterA(config)# prompt, type no router ospf 200 and press Enter.At the RouterA(config)# prompt, type router ospf 200 and press Enter.At the RouterA(config-router)# prompt, type network 192.168.0.0 0.0.255.255 area 0 and press Enter.Notice that the subnet address and wildcard mask include all networks configured on RouterA. On RouterB at the RouterB# prompt, type show ip route and press Enter to view the routing table. Answer Questions 7-8. On RouterA, reconfigure OSPF.At the RouterA(config-router)# prompt, type no router ospf 200 and press Enter.At the RouterA(config)# prompt, type router ospf 200 and press Enter.At the RouterA(config-router)# prompt, type network 192.168.0.0 0.0.255.255 area 1 and press Enter.Notice that the network command configures OSPF for a different area.Press Ctrl + Z. At the RouterA# prompt, type show ip route and press Enter to view the routing table. Answer Question 9. On RouterA, reconfigure OSPF.At the RouterA# prompt, type conf t and press Enter.At the RouterA(config)# prompt, type router ospf 200 and press Enter.At the RouterA(config-router)# prompt, type network 0.0.0.0 255.255.255.255 area 0 and press Enter. Answer Question 10. At the RouterB# prompt, type show ip route and press Enter to test your answer.

Enable EIGRP You have two routers connected as shown in the network diagram. The Jujuy router is already configured to share route information using EIGRP with an autonomous system number of 100. All the interfaces have been configured and enabled. When configuring EIGRP, remember the following: All routers that share information must use the same autonomous system number. Using a network statement without a wildcard mask makes an entry using classful network boundaries. In this lab, your task is to configure the Salta router to share routing information using EIGRP with the Jujuy router. Use the router eigrp 100 command to configure the Salta router. Add network statements to identify networks on which to run EIGRP. When you are finished, save your changes.

Select Salta. Press Enter to get started. At the Salta> prompt, type enable and press Enter. At the Salta# prompt, type config t and press Enter. At the Salta(config)# prompt, type router eigrp 100 and press Enter. At the Salta(config-router)# prompt, type network 192.168.1.0 and press Enter. At the Salta(config-router)# prompt, type network 192.168.2.0 and press Enter. At the Salta(config-router)# prompt, type network 172.17.150.140 0.0.0.3 and press Enter. Press Ctrl + Z. At the Salta# prompt, type copy run start and press Enter. Press Enter to begin building the configuration.

Enable OSPF You have two routers connected as shown in the network diagram. The Jujuy router is already configured to share route information using OSPF on Area 0. When configuring OSPF, routers do not need to use the same process ID, but networks must be defined in the same area. When adding network statements, include the wildcard mask and the area number (in this case, area 0). All interfaces have been configured and enabled. In this lab, your task is to: Configure the Salta router to share routing information using OSPF with the Jujuy router. When you are finished, save your changes.

Select Salta. Press Enter to get started. At the Salta> prompt, type enable and press Enter. At the Salta# prompt, type config t and press Enter. At the Salta(config)# prompt, type router ospf 100 and press Enter. At the Salta(config-router)# prompt, type network 192.168.1.0 0.0.0.255 area 0 and press Enter. At the Salta(config-router)# prompt, type network 192.168.2.0 0.0.0.255 area 0 and press Enter. At the Salta(config-router)# prompt, type network 172.17.150.140 0.0.0.3 area 0 and press Enter. Press Ctrl + Z. At the Salta# prompt, type copy run start and press Enter. Press Enter to begin building the configuration.