Packet Tracer - Design and Implement a VLSM Addressing Scheme

(Instructor Version)
Instructor Note: Red font color or gray highlights indicate text that appears in the instructor copy only.

Addressing Table

Device Interface IP Address Subnet Mask Default Gateway

[[R1Name]]
G0/0 [[R1G0Add]] [[R1G0Sub]] N/A
[[R1Name]] G0/1 [[R1G1Add]] [[R1G1Sub]] N/A
[[R1Name]]
S0/0/0 [[R1S0Add]] [[R1S0Sub]] N/A
[[R2Name]]
G0/0 [[R2G0Add]] [[R2G0Sub]] N/A
[[R2Name]] G0/1 [[R2G1Add]] [[R2G1Sub]] N/A
[[R2Name]]
S0/0/0 [[R2S0Add]] [[R2S0Sub]] N/A
[[S1Name]] VLAN 1 [[S1Add]] [[S1Sub]] [[R1G0Add]]
[[S2Name]] VLAN 1 [[S2Add]] [[S2Sub]] [[R1G1Add]]
[[S3Name]] VLAN 1 [[S3Add]] [[S3Sub]] [[R2G0Add]]
[[S4Name]] VLAN 1 [[S4Add]] [[S4Sub]] [[R2G1Add]]
[[PC1Name]] NIC [[PC1Add]] [[PC1Sub]] [[R1G0Add]]

[[PC2Name]] NIC [[PC2Add]] [[PC2Sub]] [[R1G1Add]]

[[PC3Name]] NIC [[PC3Add]] [[PC3Sub]] [[R2G0Add]]

[[PC4Name]] NIC [[PC4Add]] [[PC4Sub]] [[R2G1Add]]
Blank Line, No additional information

Objectives
In this lab you will design a VLSM addressing scheme given a network address and host requirements. You
will configure addressing on routers, switches, and network hosts.
 Design a VLSM IP addressing scheme given requirements.
 Configure addressing on network devices and hosts.
 Verify IP connectivity.
 Troubleshoot connectivity issues as required.

Background / Scenario
You have been asked to design, implement, and test an addressing scheme for a customer. The customer
has given you the network address that is suitable for the network, the topology, and the host requirements.
You will implement and test your design.

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Packet Tracer - Design and Implement a VLSM Addressing Scheme

Instructions
You have been given the network address [[DisplayNet]] by your customer. The host address requirements
are:

Requirements
Host Requirements:

LAN Number of Addresses Required

[[S1Name]] LAN [[HostReg1]]

[[S2Name]] LAN [[HostReg2]]
[[S3Name]] LAN [[HostReg3]]
[[S4Name]] LAN [[HostReg4]]
Blank Line, No additional information

Design Requirements
 Create the addressing design. Follow guidelines provided in the curriculum regarding the order of the
subnets.
 The subnets should be contiguous. There should be no unused address space between subnets.
 Provide the most efficient subnet possible for the point-to-point link between the routers.
 Document your design in a table such as the one below.

Number of Hosts Network First Usable Broadcast

Subnet Description Needed Address/CIDR Host Address Address

blank blank blank blank blank

blank blank blank blank blank
blank blank blank blank blank
blank blank blank blank blank
blank blank blank blank blank
Blank Line, No additional information

Configuration Requirements
Note: You will configure addressing on all devices and hosts in the network.
 Assign the first usable IP addresses in the appropriate subnets to [[R1Name]] for the two LAN links and
the WAN link.
 Assign the first usable IP addresses in the appropriate subnets to [[R2Name]] for the two LANs links.
Assign the last usable IP address for the WAN link.
 Assign the second usable IP addresses in the appropriate subnets to the switches.
 The switch management interface should be reachable from hosts on all of the LANs.
 Assign the last usable IP addresses in the appropriate subnets to the hosts.
If the addressing design and implementation are correct, all hosts and devices should be reachable over the
network.

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Packet Tracer - Design and Implement a VLSM Addressing Scheme

ID:[[indexAdds]][[indexNames]][[indexTopos]]

Instructor Notes:
The following addressing tables represent the three possible addressing scenarios the student may get. Note that
the Device column is independent of the addressing scheme. For example, a student could receive the device
names from Scenario 1 and the addressing scheme from Scenario 3. In addition, the three possible topologies are
also independent of the device names and the addressing scheme (click reset in the activity to see the different
topologies). Therefore, this activity uses three independent variables with three possible values each for a total of
27 possible combinations (3 device names x 3 addressing schemes x 3 topologies = 27 isomorphs).

Scenario 1 - Network Address: 10.1.1.0/24

Subnet Table

Number of
Subnet Network First Usable Last Usable Broadcast
Hosts
Description Address/CIDR Host Address Host Address Address
Needed

ES-1 LAN 11 10.1.48.96/28 10.1.1.97 10.1.1.110 10.1.1.111

ES-2 LAN 28 10.1.1.64/27 10.1.1.65 10.1.1.94 10.1.1.95
WS-1 LAN 5 10.1.48.112/29 10.1.1.113 10.1.1.118 10.1.1.119
WS-2 LAN 47 10.1.1.0/26 10.1.1.1 10.1.1.62 10.1.1.63
WAN Link 2 10.1.48.120/30 10.1.1.121 10.1.1.122 10.1.1.123

Device Addressing Table

Device Interface Address Subnet Mask Default Gateway

East
G0/0 10.1.1.97 255.255.255.240 N/A
East G0/1 10.1.1.65 255.255.255.224 N/A
East S0/0/0 10.1.1.121 255.255.255.252 N/A
West G0/0 10.1.1.113 255.255.255.248 N/A
West G0/1 10.1.1.1 255.255.255.192 N/A
West S0/0/0 10.1.1.122 255.255.255.252 N/A
ES-1 VLAN 1 10.1.1.98 255.255.255.240 10.1.1.97
ES-2 VLAN 1 10.1.1.66 255.255.255.224 10.1.1.65
WS-1 VLAN 1 10.1.1.114 255.255.255.248 10.1.1.113
WS-2 VLAN 1 10.1.1.2 255.255.255.192 10.1.1.1
PC E1-22 NIC 10.1.1.110 255.255.255.240 10.1.1.97
PC E2-47 NIC 10.1.1.94 255.255.255.224 10.1.1.65
PC W1-201 NIC 10.1.1.118 255.255.255.248 10.1.1.113
PC W2-87 NIC 10.1.1.62 255.255.255.192 10.1.1.1

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Packet Tracer - Design and Implement a VLSM Addressing Scheme

East
en
conf t
int g0/0
ip add 10.1.1.97 255.255.255.240
no shut
int g0/1
ip add 10.1.1.65 255.255.255.224
no shut
int s0/0/0
ip add 10.1.1.121 255.255.255.252
no shut
West
en
conf t
int g0/0
ip add 10.1.1.113 255.255.255.248
no shut
int g0/1
ip add 10.1.1.1 255.255.255.192
no shut
int s0/0/0
ip add 10.1.1.122 255.255.255.252
no shut
ES-1
en
conf t
int vlan 1
ip add 10.1.1.98 255.255.255.240
no shut
ip def 10.1.1.97
ES-2
en
conf t
int vlan 1
ip add 10.1.1.66 255.255.255.224
no shut
ip def 10.1.1.65
WS-1
en
conf t
int vlan 1
ip add 10.1.1.114 255.255.255.248
no shut
ip def 10.1.1.113
WS-2
en
conf t
int vlan 1

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Packet Tracer - Design and Implement a VLSM Addressing Scheme

ip add 10.1.1.2 255.255.255.192

no shut
ip def 10.1.1.1

Scenario 2 - Network Address: 172.16.67.0/24

Subnet Table

Number of
Subnet Network First Usable Last Usable Broadcast
Hosts
Description Address/CIDR Host Address Host Address Address
Needed

HQ-1 LAN 23 172.16.67.32/27 172.16.67.33 172.16.67.62 172.16.67.63

HQ-2 LAN 19 172.16.67.0/27 172.16.67.1 172.16.67.30 172.16.67.31
Remote-1 LAN 11 172.16.67.64/28 172.16.67.65 172.16.67.78 172.16.67.79
Remote-2 LAN 7 172.16.67.80/28 172.16.67.81 172.16.67.94 172.16.67.95
WAN Link 2 172.16.67.96/30 172.16.67.97 172.16.67.98 172.16.67.99

Device Addressing Table

Device Interface Address Subnet Mask Default Gateway

HQ
G0/0 172.16.67.33 255.255.255.224 N/A
HQ G0/1 172.16.67.1 255.255.255.224 N/A
HQ S0/0/0 172.16.67.97 255.255.255.252 N/A
Remote G0/0 172.16.67.65 255.255.255.240 N/A
Remote G0/1 172.16.67.81 255.255.255.240 N/A
Remote S0/0/0 172.16.67.98 255.255.255.252 N/A
HQ-1 VLAN 1 172.16.67.34 255.255.255.224 172.16.67.33
HQ-2 VLAN 1 172.16.67.2 255.255.255.224 172.16.67.1
Remote-1 VLAN 1 172.16.67.66 255.255.255.240 172.16.67.65
Remote-2 VLAN 1 172.16.67.82 255.255.255.240 172.16.67.81
WS116 NIC 172.16.67.62 255.255.255.224 172.16.67.33
WS145 NIC 172.16.67.30 255.255.255.224 172.16.67.1
WS203 NIC 172.16.67.78 255.255.255.240 172.16.67.65
WS234 NIC 172.16.67.94 255.255.255.240 172.16.67.81

HQ
en
conf t
int g0/0
ip add 172.16.67.33 255.255.255.224
no shut
int g0/1
ip add 172.16.67.1 255.255.255.224

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Packet Tracer - Design and Implement a VLSM Addressing Scheme

no shut
int s0/0/0
ip add 172.16.67.97 255.255.255.252
no shut
Remote
en
conf t
int g0/0
ip add 172.16.67.65 255.255.255.240
no shut
int g0/1
ip add 172.16.67.81 255.255.255.240
no shut
int s0/0/0
ip add 172.16.67.98 255.255.255.252
no shut
HQ-1
en
conf t
int vlan 1
ip add 172.16.67.34 255.255.255.224
no shut
ip def 172.16.67.33
HQ-2
en
conf t
int vlan 1
ip add 172.16.67.2 255.255.255.224
no shut
ip def 172.16.67.1
Remote-1
en
conf t
int vlan 1
ip add 172.16.67.66 255.255.255.240
no shut
ip def 172.16.67.65
Remote-2
en
conf t
int vlan 1
ip add 172.16.67.82 255.255.255.240
no shut
ip def 172.16.67.81

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Packet Tracer - Design and Implement a VLSM Addressing Scheme

Scenario 3 - Network Address: 192.168.203.0/24

Subnet Table

Number
Subnet Network First Usable Host Last Usable Broadcast
of Hosts
Description Address/CIDR Address Host Address Address
Needed

PS-115 LAN 32 192.168.203.0/26 192.168.203.1 192.168.203.62 192.168.203.63

PS-101 LAN 19 192.168.203.64/27 192.168.203.65 192.168.203.94 192.168.203.95
PD-2 LAN 21 192.168.203.96/27 192.168.203.97 192.168.203.126 192.168.203.127
PD-1 LAN 14 192.168.203.128/28 192.168.203.129 192.168.203.142 192.168.203.143
WAN Link 2 192.168.203.144/30 192.168.203.145 192.168.203.146 192.168.203.147

Device Addressing Table

Device Interface Address Subnet Mask Default Gateway

Police
G0/0 192.168.203.129 255.255.255.240 N/A
Police G0/1 192.168.203.97 255.255.255.224 N/A
Police
S0/0/0 192.168.203.145 255.255.255.252 N/A
Schools G0/0 192.168.203.65 255.255.255.224 N/A
Schools G0/1 192.168.203.1 255.255.255.192 N/A
Schools
S0/0/0 192.168.203.146 255.255.255.252 N/A
PD-1 VLAN 1 192.168.203.130 255.255.255.240 192.168.203.129
PD-2 VLAN 1 192.168.203.98 255.255.255.224 192.168.203.97
PS-101 VLAN 1 192.168.203.66 255.255.255.224 192.168.203.65
PS-115 VLAN 1 192.168.203.2 255.255.255.192 192.168.203.1
PD-1-11 NIC 192.168.203.142 255.255.255.240 192.168.203.129
PD-2-23 NIC 192.168.203.126 255.255.255.224 192.168.203.97
PS-101-87 NIC 192.168.203.94 255.255.255.224 192.168.203.65
PS-115-12 NIC 192.168.203.62 255.255.255.192 192.168.203.1

Police
en
conf t
int g0/0
ip add 192.168.203.129 255.255.255.240
no shut
int g0/1
ip add 192.168.203.97 255.255.255.224
no shut
int s0/0/0
ip address 192.168.203.145 255.255.255.252
no shut

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Packet Tracer - Design and Implement a VLSM Addressing Scheme

Schools
en
conf t
int g0/0
ip add 192.168.203.65 255.255.255.224
no shut
int g0/1
ip add 192.168.203.1 255.255.255.192
no shut
int s0/0/0
ip address 192.168.203.146 255.255.255.252
no shut
PD-1
en
conf t
int vlan 1
ip add 192.168.203.130 255.255.255.240
no shut
ip def 192.168.203.129
PD-2
en
conf t
int vlan 1
ip add 192.168.203.98 255.255.255.224
no shut
ip def 192.168.203.97
PS-101
en
conf t
int vlan 1
ip add 192.168.203.66 255.255.255.224
no shut
ip def 192.168.203.65
PS-115
en
conf t
int vlan 1
ip add 192.168.203.2 255.255.255.192
no shut
ip def 192.168.203.1
End of document

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