CCNA6-13

Hands-on Labs 405
4. Save the current configuration for router Lab_B by going to the enabled mode, typing
copy run start, and pressing Enter.
5. On Router Lab_C, create a static route to see networks 172.16.10.0 and 172.16.20.0,
which are not directly connected. Create static routes so that Router Lab_C can see all
networks, as shown here:
Lab_C#config t
Lab_C(config)#ip route 172.16.10.0 255.255.255.0
172.16.30.1
Lab_C(config)#ip route 172.16.20.0 255.255.255.0
172.16.30.1
6. Save the current configuration for Router 2501B by going to the enable mode, typing
copy run start, and pressing Enter.
7. Check your routing tables to make sure all four networks show up.
8. Now ping from each router to your hosts and from each router to each router. If it is set
up correctly, it will work.
Hands-on Lab 6.2: Configuring RIP Routing
In this lab, we will use the dynamic routing protocol RIP instead of static routing.
1. Remove any static routes or default routes configured on your routers by using the no ip
route command. For example, here is how you would remove the static routes on the
Lab_A router:
Lab_A#config t
Lab_A(config)#no ip route 172.16.30.0 255.255.255.0
172.16.20.2
Lab_A(config)#no ip route 172.16.40.0 255.255.255.0
172.16.20.2
Do the same thing for routers Lab_B and Lab_C. Verify that only your directly connected
networks are in the routing tables.
2. After your static and default routes are clear, go into configuration mode on Router
Lab_A by typing config t.
3. Tell your router to use RIP routing by typing router rip and pressing Enter, as shown here:
config t
router rip
4. Add the network number you want to advertise by typing network 172.16.0.0 and
pressing Enter.
5. Press Ctrl+Z to get out of configuration mode.
406 Chapter 6  IP Routing
6. Go to routers Lab_B and Lab_C and type the same commands, as shown here:
Config t
Router rip
network 172.16.0.0
7. Verify that RIP is running at each router by typing the following commands at each
router:
show ip protocols
show ip route
show running-config or show run
8. Save your configurations by typing copy run start or copy running-config startupconfig
and pressing Enter at each router.
9. Verify the network by pinging all remote networks and hosts.
Review Questions 407
Review Questions
The following questions are designed to test your understanding of this
chapter’s material. For more information on how to get additional questions,
please see this book’s Introduction.
1. Network 206.143.5.0 was assigned to the Acme Company to connect to its ISP. The administrator
of Acme would like to configure one router with the commands to access the Internet.
Which commands could be configured on the Gateway router to allow Internet access to the
entire network? (Choose two.)
A. Gateway(config)#ip route 0.0.0.0 0.0.0.0 206.143.5.2
B. Gateway(config)#router rip
C. Gateway(config-router)#network 206.143.5.0
D. Gateway(config)#router rip
E. Gateway(config-router)#network 206.143.5.0 default
F. Gateway(config)#ip route 206.143.5.0 255.255.255.0 default
G. Gateway(config)#ip default-network 206.143.5.0
2. What command is used to stop RIP routing updates from exiting out an interface but still allow
the interface to receive RIP route updates?
A. Router(config-if)#no routing
B. Router(config-if)#passive-interface
C. Router(config-router)#passive-interface s0
D. Router(config-router)#no routing updates
3. Which of the following statements are true regarding the command ip route 172.16.4.0
255.255.255.0 192.168.4.2? (Choose two.)
A. The command is used to establish a static route.
B. The default administrative distance is used.
C. The command is used to configure the default route.
D. The subnet mask for the source address is 255.255.255.0.
E. The command is used to establish a stub network.
408 Chapter 6  IP Routing
4. What destination addresses will be used by Host_A to send data to the HTTPS server as shown
in the following network? (Choose two.)
A. The IP address of the switch
B. The MAC address of the remote switch
C. The IP address of the HTTPS server
D. The MAC address of the HTTPS server
E. The IP address of RouterA’s Fa0/0 interface
F. The MAC address of RouterA’s Fa0/0 interface
5. Which of the following is true regarding the following output? (Choose two.)
04:06:16: RIP: received v1 update from 192.168.40.2 on Serial0/1
04:06:16: 192.168.50.0 in 16 hops (inaccessible)
04:06:40: RIP: sending v1 update to 255.255.255.255 via
FastEthernet0/0 (192.168.30.1)
04:06:40: RIP: build update entries
04:06:40: network 192.168.20.0 metric 1
04:06:40: network 192.168.40.0 metric 1
04:06:40: network 192.168.50.0 metric 16
04:06:40: RIP: sending v1 update to 255.255.255.255 via Serial0/1
(192.168.40.1)
A. There are three interfaces on the router participating in this update.
B. A ping to 192.168.50.1 will be successful.
C. There are at least two routers exchanging information.
D. A ping to 192.168.40.2 will be successful.
6. What is split horizon?
A. Information about a route should not be sent back in the direction from which the original
update came.
B. It splits the traffic when you have a large bus (horizon) physical network.
C. It holds the regular updates from broadcasting to a downed link.
D. It prevents regular update messages from reinstating a route that has gone down.
Fa0/0
RouterA
HostA
Fa0/1
HTTPS Server
Review Questions 409
7. Which of the following would be true if HostA is trying to communicate to HostB and interface
F0/0 of RouterC goes down? (Choose two.)
A. RouterC will use an ICMP to inform HostA that HostB cannot be reached.
B. RouterC will use ICMP to inform RouterB that HostB cannot be reached.
C. RouterC will use ICMP to inform HostA, RouterA, and RouterB that HostB cannot
be reached.
D. RouterC will send a destination unreachable message type.
E. RouterC will send a router selection message type.
F. RouterC will send a source quench message type.
8. Which statement is true regarding classless routing protocols? (Choose two.)
A. The use of discontiguous networks is not allowed.
B. The use of variable length subnet masks is permitted.
C. RIPv1 is a classless routing protocol.
D. IGRP supports classless routing within the same autonomous system.
E. RIPv2 supports classless routing.
9. Which two of the following are true regarding the distance-vector and link-state routing
protocols?
A. Link state sends its complete routing table out all active interfaces on periodic time
intervals.
B. Distance vector sends its complete routing table out all active interfaces on periodic
time intervals.
C. Link state sends updates containing the state of its own links to all routers in the
internetwork.
D. Distance vector sends updates containing the state of its own links to all routers in the
internetwork.
10. Which command displays RIP routing updates?
A. show ip route
B. debug ip rip
C. show protocols
D. debug ip route
RouterA RouterB RouterC
HostA HostB