17.8.1 Lab – Design and Build a Small Network Answers

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17.8.1 Lab – Design and Build a Small Network Answers

Lab – Design and Build a Small Network (Answers Version)

Answers Note: Red font color or gray highlights indicate text that appears in the Answers copy only.


Explain how a small network of directly connected segments is created, configured, and verified.

Background /Scenario

Note: This activity is best completed in groups of 2-3 students.

Design and build a network from scratch.

  • Your design must include a minimum of one Cisco 4321 router, two Cisco 2960 switches, and two PCs.
  • Fully configure the network and use IPv4 or IPv6 (subnetting must be included as a part of your addressing scheme).
  • Verify the network using at least five show commands.
  • Secure the network using SSH, secure passwords and console passwords (minimum).

Create a rubric to use for informal peer grading. Present your Capstone Project to the class and be able to answer questions from your peers and Answers!

Answers Note: This optional Modeling Activity is suggested to be a graded assignment after completing all the chapters. Students should be able to show how small networks are designed, configured, verified, and secured. Documentation is a large factor of this project and students must be able to explain their network design and verification using show commands.

Required Resources

  • Packet Tracer
  • Student/group-created rubric for assessment of the assignment

Reflection Questions

  1. What was the most difficult portion of this activity?

Type you answers here.

Answers will vary.

  1. Why do you think network documentation is so important to this activity and in the real world?

Type you answers here.

End of document

Documentation is imperative to good network management and without it, network administrators have to recreate topologies, physically check addressing, etc. This takes time, which could be used elsewhere.

A suggested rubric and documentation examples are provided below:

Note: This rubric includes a total of 100 points for the points earned category (if minimum standards are met). Answerss may wish to consider adding bonus points for additional/advanced work in any requirement category.


Points Earned

Physical Topology – minimum 1 Cisco 4321 router, 2 Cisco 2960 switches, 2 PCs

(20 suggested)

Logical Addressing – subnetting used?

(20 suggested

Connectivity test – ping the router

(20 suggested)

Show commands (at least 5 documented as baseline)

(20 suggested)

Security – SSH, secure passwords, console security – documented by show running-configuration

(20 suggested)

Create a small network of directly connected segments, at a minimum 1 router, 2 switches and 2 PCs, and include a screenshot of the network in your final documentation.

The topology has 2 PCs, two switches, and a router.PC1 is connected to SW1 with a console cable to the router. PC2 is connected to SW2 and both SW1 and SW2 are connected to different interfaces of the router.

Configure the network to include switches, routers, and end devices and use your own network addressing.  You must use subnetting of some type and you can use either IPv4 or IPv6 logical addressing. Create a table showing your physical addressing scheme for the router, switch, and PC and include it in your final documentation.

Device Name

IP Address

Subnet Mask


G0/0/0 –

G0/0/1 –






F0 –


F0 – 192.168.1 40

Verify the network by using show commands (at least 5) to provide a performance baseline. Be able to discuss why you chose the show commands you selected and what the output means (use all Packet Tracer activities for Chapters 1-17). Keep screenshots of your output and include in your final documentation.

Cap_rtr# show arp

Protocol  Address          Age (min)  Hardware Addr   Type   Interface

Internet                00D0.9741.9101  ARPA   GigabitEthernet0/0/0

Internet            1   000A.4120.9039  ARPA   GigabitEthernet0/0/0

Internet               00D0.9741.9102  ARPA   GigabitEthernet0/0/1

Internet            1   00D0.BCC3.BBEB  ARPA   GigabitEthernet0/0/1

Internet            0   0060.4779.5A11  ARPA   GigabitEthernet0/0/1


Cap_rtr# show int g0/0/0

GigabitEthernet0/0/0 is up, line protocol is up (connected)

Hardware is Lance, address is 00d0.9741.9101 (bia 00d0.9741.9101)

Internet address is

MTU 1500 bytes, BW 1000000 Kbit, DLY 100 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation ARPA, loopback not set

Full-duplex, 100Mb/s, media type is RJ45

ARP type: ARPA, ARP Timeout 04:00:00,

Last input 00:00:08, output 00:00:05, output hang never

Last clearing of “show interface” counters never

Input queue: 0/75/0 (size/max/drops); Total output drops: 0

Queueing strategy: fifo

Output queue :0/40 (size/max)

5 minute input rate 27 bits/sec, 0 packets/sec

5 minute output rate 23 bits/sec, 0 packets/sec

8 packets input, 1024 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

0 input packets with dribble condition detected

7 packets output, 896 bytes, 0 underruns

0 output errors, 0 collisions, 1 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out


Cap_rtr# show ip route

Codes: L – local, C – connected, S – static, 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, ia – IS-IS inter area

* – candidate default, U – per-user static route, o – ODR

P – periodic downloaded static route


Gateway of last resort is not set is variably subnetted, 4 subnets, 2 masks

C is directly connected, GigabitEthernet0/0/0

L is directly connected, GigabitEthernet0/0/0

C is directly connected, GigabitEthernet0/0/1

L is directly connected, GigabitEthernet0/0/1


Cap_sw1# show vlan brief


VLAN Name                             Status    Ports

—- ——————————– ——— ——————————-

1    default                          active    Fa0/1, Fa0/2, Fa0/3, Fa0/4

                                                Fa0/5, Fa0/6, Fa0/7, Fa0/8

                                                Fa0/9, Fa0/10, Fa0/11, Fa0/12

                                                Fa0/13, Fa0/14, Fa0/15, Fa0/16

                                                Fa0/17, Fa0/18, Fa0/19, Fa0/20

                                                Fa0/21, Fa0/22, Fa0/23, Fa0/24

                                                Gig0/1, Gig0/2

1002 fddi-default                     active

1003 token-ring-default               active

1004 fddinet-default                  active

1005 trnet-default                    active


Cap_sw2> traceroute

Type escape sequence to abort.

Tracing the route to


1 39 msec 0 msec 0 msec

2 13 msec 21 msec 15 msec

Secure the network using common configuration to include SSH, secure passwords, console security, etc. and verify the commands configured by enacting a show running-configuration screen as output. Include in your final documentation.

Cap_rtr# show run

Building configuration…


Current configuration : 831 bytes


version 15.4

no service timestamps log datetime msec

no service timestamps debug datetime msec

service password-encryption


hostname Cap_rtr


enable secret 5 $1$mERr$5.a6P4JqbNiMX01usIfka/


ip cef

no ipv6 cef


username SSHAdmin secret 5 $1$mERr$WvpW0n5HghRrqnrwXCUUl.


ip domain-name capstone.lab


spanning-tree mode pvst


interface GigabitEthernet0/0/0

ip address

duplex auto

speed auto


interface GigabitEthernet0/0/1

ip address

duplex auto

speed auto


interface Vlan1

no ip address



ip classless


ip flow-export version 9



line con 0

password 7 0822455D0A16544541

login local


line aux 0


line vty 0 4

password 7 0822455D0A16544541

login local

transport input ssh





Identify elements of the model that map to real-world applications:

All facets of this activity map to IT-related content and real-world applications because this is a culminating activity for all the Chapters.

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