Example 6-32 through Example 6-34 show the configurations for the three routers in Figure 6-23. Which subnets are in the routing tables of each router? From each router, which subnets are reachable and which subnets (if any) are unreachable?
Figure 6-23. The network for Troubleshooting Exercises 1 and 2.
Example 6-32. The configuration of RTA in Figure 6-23.
RTA#show running-config Building configuration... Current configuration: ! version 11.2 no service udp-small-servers no service tcp-small-servers ! hostname RTA ! ! ! interface Ethernet0 ip address 192.168.13.86 255.255.255.248 ! interface Serial0 no ip address shutdown ! interface Serial1 no ip address shutdown ! interface TokenRing0 ip address 192.168.13.34 255.255.255.224 ring-speed 16 ! router rip version 2 network 192.168.13.0 ! no ip classless ! ! line con 0 line aux 0 line vty 0 4 login ! end RTA#
Example 6-33. The configuration of RTB in Figure 6-23.
RTB#show running-config Building configuration... Current configuration: ! version 11.2 no service udp-small-servers no service tcp-small-servers ! hostname RTB ! ! ! interface Ethernet0 ip address 192.168.13.90 255.255.255.240 ! interface Serial0 no ip address shutdown ! interface Serial1 no ip address shutdown ! interface TokenRing0 ip address 192.168.13.35 255.255.255.224 ring-speed 16 ! router rip version 2 network 192.168.13.0 ! no ip classless ! ! line con 0 line aux 0 line vty 0 4 login ! end RTB#
Example 6-34. The configuration of RTC in Figure 6-23.
RTC#show running-config Building configuration... Current configuration: ! version 11.1 service udp-small-servers service tcp-small-servers ! hostname RTC ! ! ! interface Ethernet0 ip address 192.168.13.75 255.255.255.224 ! interface Serial0 no ip address shutdown ! interface Serial1 no ip address shutdown ! interface TokenRing0 ip address 192.168.13.33 255.255.255.224 ring-speed 16 ! router rip network 192.168.13.0 ! no ip classless ! line con 0 line 1 8 line aux 0 line vty 0 4 login ! end RTC#
2
The configurations of RTA and RTB in Figure 6-23 are changed as follows:[14]
[14] The configuration shown is for RTB. RTA is identical, except for the IP address, which is 192.168.13.34.
interface Ethernet0ip address 192.168.13.35 255.255.255.224ip rip receive version 1 2
Will any subnets be added to any routing tables as a result of this change? Explain why or why not.
