[CCNAv6 S1] 8.2.1.4 Packet Tracer - Designing and Implementing a VLSM Addressing Scheme



Packet Tracer - Designing and Implementing a VLSM Addressing Scheme
Addressing Table

Objectives

Part 1: Examine the Network Requirements

Part 2: Design the VLSM Addressing Scheme

Part 3: Assign IP Addresses to Devices and Verify Connectivity

Background

In this activity, you are given a /24 network address to use to design a VLSM addressing scheme. Based on a set of requirements, you will assign subnets and addressing, configure devices and verify connectivity.

Part 1:   Examine the Network Requirements
Step 1:     Determine the number of subnets needed.

You will subnet the network address 192.168.72.0/24. The network has the following requirements:

·         ASW-1 LAN will require 7 host IP addresses
·         ASW-2 LAN will require 15 host IP addresses
·         ASW-3 LAN will require 29 host IP addresses
·         ASW-4 LAN will require 58 host IP addresses
How many subnets are needed in the network topology?

Step 2:     Determine the subnet mask information for each subnet.

a.     Which subnet mask will accommodate the number of IP addresses required for ASW-1?

How many usable host addresses will this subnet support?
b.    Which subnet mask will accommodate the number of IP addresses required for ASW-2?

How many usable host addresses will this subnet support?
c.     Which subnet mask will accommodate the number of IP addresses required for ASW-3?

How many usable host addresses will this subnet support?
d.    Which subnet mask will accommodate the number of IP addresses required for ASW-4?

How many usable host addresses will this subnet support?
e.     Which subnet mask will accommodate the number of IP addresses required for the connection between Building1 and Building2?

Part 2:   Design the VLSM Addressing Scheme
Step 1:     Divide the 192.168.72.0/24 network based on the number of hosts per subnet.

a.     Use the first subnet to accommodate the largest LAN.

b.    Use the second subnet to accommodate the second largest LAN.

c.     Use the third subnet to accommodate the third largest LAN.

d.    Use the fourth subnet to accommodate the fourth largest LAN.

e.     Use the fifth subnet to accommodate the connection between Building1 and Building2.

Step 2:     Document the VLSM subnets.

Complete the Subnet Table, listing the subnet descriptions (e.g. ASW-1 LAN), number of hosts needed, then network address for the subnet, the first usable host address, and the broadcast address. Repeat until all addresses are listed.


Step 3:     Document the addressing scheme.

a.     Assign the first usable IP addresses to Building1 for the two LAN links and the WAN link.

b.    Assign the first usable IP addresses to Building2 for the two LANs links. Assign the last usable IP address for the WAN link.

c.     Assign the second usable IP addresses to the switches.

d.    Assign the last usable IP addresses to the hosts.

Part 3:   Assign IP Addresses to Devices and Verify Connectivity
Most of the IP addressing is already configured on this network. Implement the following steps to complete the addressing configuration.

Step 1:     Configure IP addressing on Building1 LAN interfaces.

Step 2:     Configure IP addressing on ASW-3, including the default gateway.

Step 3:     Configure IP addressing on Host-D, including the default gateway.

Step 4:     Verify connectivity.

You can only verify connectivity from Building1, ASW-3, and Host-D. However, you should be able to ping every IP address listed in the Addressing Table.


 Configuration Building1: 

enable
configure terminal
interface g0/0
 ip address 192.168.72.129 255.255.255.240
 no shutdown
interface g0/1
 ip address 192.168.72.97 255.255.255.224
 no shutdown
exit
!
Configuration ASW-3: 

enable
configure terminal
interface vlan 1
 ip address 192.168.72.66 255.255.255.224
 no shutdown
 exit
ip default-gateway 192.168.72.65
!
Configuration Host-D: 




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