Troubleshooting Exercises

1	In the network of Figure 3-2 and the associated configurations, the route entries for Piglet are changed from Piglet(config)# ip route 192.168.1.0 255.255.255.0 192.168.1.193 Piglet(config)# ip route 10.4.0.0 255.255.0.0 192.168.1.193 to Piglet(config)# ip route 192.168.1.0 255.255.255.224 192.168.1.193 Piglet(config)# ip route 10.0.0.0 255.255.0.0 192.168.1.193 What is the result?
2	Example 3-59 shows the static route configurations for the routers in Figure 3-15. Figure 3-15. The network for Troubleshooting Exercise 2. Example 3-59. Static route configurations for routers in Figure 3-15. !RTA ip route 172.20.96.0 255.255.240.0 172.20.20.1 ip route 172.20.82.0 255.255.240.0 172.20.20.1 ip route 172.20.64.0 255.255.240.0 172.20.20.1 ip route 172.20.160.0 255.255.240.0 172.20.30.255 ip route 172.20.144.0 255.255.240.0 172.20.30.255 ip route 172.20.128.0 255.255.240.0 172.20.30.255 _________________________________________________ !RTB ip route 172.20.192.0 255.255.240.0 172.20.16.50 ip route 172.20.224.0 255.255.240.0 172.20.16.50 ip route 172.20.128.0 255.255.240.0 172.20.16.50 ip route 172.20.160.0 255.255.240.0 172.20.30.255 ip route 172.20.144.0 255.255.240.0 172.20.30.255 ip route 172.20.128.0 255.255.240.0 172.20.30.255 _________________________________________________ !RTC ip route 172.20.192.0 255.255.240.0 172.20.16.50 ip route 172.20.208.0 255.255.255.0 172.20.16.50 ip route 172.20.224.0 255.255.240.0 172.20.16.50 ip route 172.20.96.0 255.255.240.0 172.20.20.1 ip route 172.20.82.0 255.255.240.0 172.20.20.1 ip route 172.20.64.0 255.255.240.0 172.20.20.1 Users are complaining of several connectivity problems in this internet. Find the mistakes in the static route configurations.
3	Figure 3-16 shows another network in which users are complaining of connectivity problems. Example 3-60 through Example 3-63 show the route tables of the four routers. Figure 3-16. The network for Troubleshooting Exercise 3. Find the mistakes in the static route configurations. Example 3-60. The route table of RTA in Figure 3-16. RTA#show ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default, U per-user static route Gateway of last resort is not set 10.0.0.0/8 is subnetted, 9 subnets S 10.5.9.0 [1/0] via 10.5.3.2 S 10.5.8.0 [1/0] via 10.5.3.2 S 10.5.7.0 [1/0] via 10.5.3.2 S 10.5.6.0 [1/0] via 10.5.3.2 S 10.5.5.0 [1/0] via 10.5.3.2 S 10.5.4.0 [1/0] via 10.5.3.2 C 10.5.3.0 is directly connected, Serial0 C 10.5.2.0 is directly connected, TokenRing1 C 10.5.1.0 is directly connected, TokenRing0 RTA# Example 3-61. The route table of RTB in Figure 3-16. RTB#show ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default, U per-user static route Gateway of last resort is not set 10.0.0.0/8 is subnetted, 9 subnets S 10.5.9.0 [1/0] via 10.5.5.2 S 10.5.8.0 [1/0] via 10.5.5.2 S 10.5.7.0 [1/0] via 10.5.5.2 S 10.5.6.0 [1/0] via 10.5.5.2 C 10.5.5.0 is directly connected, Serial1 C 10.5.4.0 is directly connected, TokenRing0 C 10.5.3.0 is directly connected, Serial0 S 10.5.2.0 [1/0] via 10.5.3.1 S 10.5.1.0 [1/0] via 10.5.3.1 RTB# Example 3-62. The route table of RTC in Figure 3-16. RTC#show ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default, U per-user static route, o - ODR Gateway of last resort is not set 10.0.0.0/24 is subnetted, 8 subnets S 10.5.9.0 [1/0] via 10.5.7.2 S 10.5.8.0 [1/0] via 10.5.5.1 C 10.5.7.0 is directly connected, Serial1 C 10.5.6.0 is directly connected, Ethernet0 S 10.1.1.0 [1/0] via 10.5.5.1 C 10.5.5.0 is directly connected, Serial0 S 10.5.3.0 [1/0] via 10.5.5.1 S 10.5.2.0 [1/0] via 10.5.5.1 RTC# Example 3-63. The route table of RTD in Figure 3-16. RTD#show ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default, U per-user static route, o - ODR Gateway of last resort is not set 10.0.0.0/24 is subnetted, 9 subnets C 10.5.9.0 is directly connected, Ethernet1 C 10.5.8.0 is directly connected, Ethernet0 C 10.5.7.0 is directly connected, Serial0 S 10.5.6.0 [1/0] via 10.5.7.1 S 10.5.5.0 [1/0] via 10.5.7.1 S 10.4.5.0 [1/0] via 10.5.7.1 S 10.5.3.0 [1/0] via 10.5.7.1 S 10.5.2.0 [1/0] via 10.5.7.1 S 10.5.1.0 [1/0] via 10.5.7.1 RTD#