Networking Chapter 12 Homework Ccna Guide Cisco Networking Fourth Edition Lab Solutions Lab Solutions

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CCNA Guide to Cisco Networking, Fourth Edition Chapter 12 Lab Solutions

Chapter 12 Lab Solutions

Before the students do these labs, I configure all the workstations to be on network

210.93.105.0 /24. The TFTP server is already 210.93.105.3. I assign any other IP

address on that network to the other 5 computers. No gateway is necessary, as all

communications for these labs are through a hub or switch only. Also make sure the

computers are all part of the same workgroup, so they can see each other in the

Network window. Also, if you can’t see all of the computers in the Network window,

make sure that Network Discovery is on and that File Sharing is on. If you are using XP

computers instead of Vista machines, make sure the Computer Browser is enabled in

Services. I had the Windows Firewall off when doing these labs.

In addition, you need a file named switchtest on the desktops of the lab-b, lab-d, and lab-

e computers. Use any file at least 500 MB and just rename it switchtest. It is better to

use nonexecutables or one big zipped file. The students will be moving, not copying the

Switchtest file. The desktops on all six workstations should be shared with full access.

Instructor Tips Lab 12.1

I use the lab-d, lab-e, and TFTP servers for this lab, but you can set up three Windows

computers in a different area with the appropriate IP addresses and load the TFTP

server software on the 210.93.105.3 computer.

Activity Questions Lab 12.1

14. Hopefully yes

19. line vty 0 15

25. because all interfaces are on vlan 1 unless changed and vlan 1 is the

management vlan

26. mac-address-sticky tells the switch to associate the mac address of the

computer with that port and to remember it; maximum 1 tells the switch that only

one mac can be associated with a port; violation shutdown tells the switch to

shutdown the port interface if a different mac address is seen on that port

28. Hopefully yes

30. It goes orange

32. Eventually yes

Review Questions Lab 12.1

1. Many of the configuration commands on a Cisco 2950 series switch are identical to

the commands used on a Cisco 2600 series router. True or False?

2. Why might you want ot put an IP configuration on your switch?

3. Why might there be more MAC addresses in a switching table reported by the show

mac-address-table command than connected devices?

4. What is the purpose of the interface range command?

5. What is the only thing you need to know to backup a configuration file to a tftp

server?

6. Can you delete a VLAN 1? Why or why not?

Instructor Tips Lab 12.2

Before doing this lab, make sure all computers can see each other in the Network

window. They must all be configured for the same network (210.93.105.0) and must all

be in the same workgroup. Sometimes it takes a while for the Windows browser to “see”

the other computers. Ping back and forth until they see each other. Also, I make the

students read through this lab before they do it, as it takes some coordination.

Emphasize that the SWITCHTEST file will be moved but not copied. The only transfer

that gets timed is the one between the lab-e computer and the TFTP server.

Activity Questions Lab 12.2

8. No

16. Much more activity

18. All ports on the hub are in the same collision domain, so the more traffic that

is generated, the more collisions and the longer it takes. Hubs use shared

bandwidth.

Review Questions Lab 12.2

1. How does regular half-duplex communications through a hub work?

2. Would a hub be used to solve network congestion problems in an Ethernet network?

Why or why not?

3. Why did it take longer to transfer the files when there was traffic on all connected hub

ports?

Instructor Tips Lab 12.3

This is the same lab as Lab 12.2, except students use a switch instead of a hub.

If Lab 12.2 was done properly, the SWITCHTEST folder should now be on the

desktops of the lab-a, lab-c, and lab-e workstations. Before doing this lab, make

CCNA Guide to Cisco Networking, Fourth Edition Chapter 12 Lab Solutions

sure all computers can see each other the Network window. Sometimes it takes

a while for the Windows browser to “see” the other computers. Also, the switch

should have been reset to defaults after Lab 12.1. If that switch is still configured

for that lab, and you are using it for this one, there may be problems. Make sure

Activity Questions Lab 12.3

7. Ports 5 and 6 are busier

9. Answer varies

17. Answer varies, but it won’t be much more than in the two-port switch experiment

20. Each connection is its own virtual circuit. There is no contention.

Review Questions Lab 12.3

1. In terms of collisions and speed, what are the differences between hubs and

switches?

2. How do switches solve network congestion problems on Ethernet networks?

3. What does the term “switched bandwidth” mean?