11.10.1 Packet Tracer - Design and Implement a VLSM Addressing Scheme (2025)

11.10.1 Packet Tracer – Design and Implement a VLSM Addressing Scheme Instructor Version

Topology

11.10.1 Packet Tracer - Design and Implement a VLSM Addressing Scheme (1)

Addressing Table

DeviceInterfaceAddressSubnet MaskDefault Gateway
EastG0/010.1.1.97255.255.255.240N/A
G0/110.1.1.65255.255.255.224N/A
S0/0/010.1.1.121255.255.255.252N/A
WestG0/010.1.1.113255.255.255.248N/A
G0/110.1.1.1255.255.255.192N/A
S0/0/010.1.1.122255.255.255.252N/A
ES-1VLAN 110.1.1.98255.255.255.24010.1.1.97
ES-2VLAN 110.1.1.66255.255.255.22410.1.1.65
WS-1VLAN 110.1.1.114255.255.255.24810.1.1.113
WS-2VLAN 110.1.1.2255.255.255.19210.1.1.1
PC E1-22NIC10.1.1.110255.255.255.24010.1.1.97
PC E2-47NIC10.1.1.94255.255.255.22410.1.1.65
PC W1-201NIC10.1.1.118255.255.255.24810.1.1.113
PC W2-87NIC10.1.1.62255.255.255.19210.1.1.1

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.

Instructions

You have been given the network address 10.1.1.0/24 by your customer. The host address requirements are:

Requirements

Host Requirements:

LANNumber of Addresses Required

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.
Subnet DescriptionNumber of Hosts NeededNetwork Address/CIDRFirst Usable Host AddressLast Usable Host AddressBroadcast Address
WS-2 LAN4710.1.1.0/2610.1.1.110.1.1.6210.1.1.63
ES-2 LAN2810.1.1.64/2710.1.1.6510.1.1.9410.1.1.95
ES-1 LAN1110.1.48.96/2810.1.1.9710.1.1.11010.1.1.111
WS-1 LAN510.1.48.112/2910.1.1.11310.1.1.11810.1.1.119
WAN Link210.1.48.120/3010.1.1.12110.1.1.12210.1.1.123

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.

East

enconf tint g0/0ip add 10.1.1.97 255.255.255.240no shutint g0/1ip add 10.1.1.65 255.255.255.224no shutint s0/0/0ip add 10.1.1.121 255.255.255.252no shut

West

enconf tint g0/0ip add 10.1.1.113 255.255.255.248no shutint g0/1ip add 10.1.1.1 255.255.255.192no shutint s0/0/0ip add 10.1.1.122 255.255.255.252no shut

ES-1

enconf tint vlan 1ip add 10.1.1.98 255.255.255.240no shutip def 10.1.1.97

ES-2

enconf tint vlan 1ip add 10.1.1.66 255.255.255.224no shutip def 10.1.1.65

WS-1

enconf tint vlan 1ip add 10.1.1.114 255.255.255.248no shutip def 10.1.1.113

WS-2

enconf tint vlan 1ip add 10.1.1.2 255.255.255.192no shutip def 10.1.1.1

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11.10.1 Packet Tracer - Design and Implement a VLSM Addressing Scheme (2)

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11.10.1 Packet Tracer - Design and Implement a VLSM Addressing Scheme (3)

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Scenario 2 – Network Address: 172.19.67.0/24

Subnet Table

Subnet DescriptionNumber of Hosts NeededNetwork Address/CIDRFirst Usable Host AddressLast Usable Host AddressBroadcast Address
HQ-1 LAN19172.19.67.0/27172.19.67.1172.19.67.30172.19.67.31
HQ-2 LAN23172.19.67.32/27172.19.67.33172.19.67.62172.19.67.63
Remote-1 LAN11172.19.67.64/28172.19.67.65172.19.67.78172.19.67.79
Remote-2 LAN7172.19.67.80/28172.19.67.81172.19.67.94172.19.67.95
WAN Link2172.19.67.96/30172.19.67.97172.19.67.98172.19.67.99

Device Addressing Table

DeviceInterfaceAddressSubnet MaskDefault Gateway
HQG0/0172.19.67.1255.255.255.224N/A
HQG0/1172.19.67.33255.255.255.224N/A
HQS0/0/0172.19.67.97255.255.255.252N/A
RemoteG0/0172.19.67.65255.255.255.240N/A
RemoteG0/1172.19.67.81255.255.255.240N/A
RemoteS0/0/0172.19.67.98255.255.255.252N/A
HQ-1VLAN 1172.19.67.2255.255.255.224172.19.67.1
HQ-2VLAN 1172.19.67.34255.255.255.224172.19.67.33
Remote-1VLAN 1172.19.67.66255.255.255.240172.19.67.65
Remote-2VLAN 1172.19.67.82255.255.255.240172.19.67.81
WS116NIC172.19.67.30255.255.255.224172.19.67.1
WS145NIC172.19.67.62255.255.255.224172.19.67.33
WS203NIC172.19.67.78255.255.255.240172.19.67.65
WS234NIC172.19.67.94255.255.255.240172.19.67.81

HQ

enconf tint g0/0ip add 172.19.67.1 255.255.255.224no shutint g0/1ip add 172.19.67.33 255.255.255.224no shutint s0/0/0ip add 172.19.67.97 255.255.255.252no shut

Remote

enconf tint g0/0ip add 172.19.67.65 255.255.255.240no shutint g0/1ip add 172.19.67.81 255.255.255.240no shutint s0/0/0ip add 172.19.67.98 255.255.255.252no shut

HQ-1

enconf tint vlan 1ip add 172.19.67.2 255.255.255.224no shutip def 172.19.67.1

HQ-2

enconf tint vlan 1ip add 172.19.67.34 255.255.255.224no shutip def 172.19.67.33

Remote-1

enconf tint vlan 1ip add 172.19.67.66 255.255.255.240no shutip def 172.19.67.65

Remote-2

enconf tint vlan 1ip add 172.19.67.82 255.255.255.240no shutip def 172.19.67.81

Scenario 3 – Network Address: 192.168.203.0/24

11.10.1 Packet Tracer - Design and Implement a VLSM Addressing Scheme (4)

11.10.1 Packet Tracer – Design and Implement a VLSM Addressing Scheme

Subnet Table

Subnet
Descr
iption
Number of Hosts NeededNetwork Address/CIDRFirst Usable Host AddressLast Usable Host AddressBroadcast Address
PS-101
LAN
32192.168.203.0
/26
192.168.203.1192.168.203.62192.168.203.63
PD-1
LAN
21192.168.203.64
/27
192.168.203.65192.168.203.94192.168.203.95
PS-115
LAN
19192.168.203.96
/27
192.168.203.97192.168.203.126192.168.203.127
PD-2
LAN
14192.168.203.128
/28
192.168.203.129192.168.203.142192.168.203.143
WAN
Link
2192.168.203.144
/30
192.168.203.145192.168.203.146192.168.203.147

Device Addressing Table

DeviceInterfaceAddressSubnet MaskDefault Gateway
PoliceG0/0192.168.203.129255.255.255.240N/A
PoliceG0/1192.168.203.97255.255.255.224N/A
PoliceS0/0/0192.168.203.145255.255.255.252N/A
SchoolsG0/0192.168.203.65255.255.255.224N/A
SchoolsG0/1192.168.203.1255.255.255.192N/A
SchoolsS0/0/0192.168.203.146255.255.255.252N/A
PD-1VLAN 1192.168.203.130255.255.255.240192.168.203.129
PD-2VLAN 1192.168.203.98255.255.255.224192.168.203.97
PS-101VLAN 1192.168.203.66255.255.255.224192.168.203.65
PS-115VLAN 1192.168.203.2255.255.255.192192.168.203.1
PD-1-11NIC192.168.203.142255.255.255.240192.168.203.129
PD-2-23NIC192.168.203.126255.255.255.224192.168.203.97
PS-101-87NIC192.168.203.94255.255.255.224192.168.203.65
PS-115-12NIC192.168.203.62255.255.255.192192.168.203.1

Police

enconf tint g0/0ip add 192.168.203.129 255.255.255.240no shutint g0/1ip add 192.168.203.97 255.255.255.224no shutint s0/0/0ip address 192.168.203.145 255.255.255.252no shut

Schools

enconf tint g0/0ip add 192.168.203.65 255.255.255.224no shutint g0/1ip add 192.168.203.1 255.255.255.192no shutint s0/0/0ip address 192.168.203.146 255.255.255.252no shut

PD-1

enconf tint vlan 1ip add 192.168.203.130 255.255.255.240no shutip def 192.168.203.129

PD-2

enconf tint vlan 1ip add 192.168.203.98 255.255.255.224no shutip def 192.168.203.97

PS-101

enconf tint vlan 1ip add 192.168.203.66 255.255.255.224no shutip def 192.168.203.65

PS-115

enconf tint vlan 1ip add 192.168.203.2 255.255.255.192no shutip def 192.168.203.1

Previous Lab
11.9.3 Packet Tracer – VLSM Design and Implementation Practice

Next Lab
11.10.2 Packet Tracer – Design and Implement a VLSM Addressing Scheme – Physical Mode

11.10.1 Packet Tracer - Design and Implement a VLSM Addressing Scheme (2025)

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