In this lab, we use VLSM to design and build a network in Packet Tracer to meet the specifications for a given school environment.

• Cisco Packet Tracer
• Packet Tracer Lab Starter File

For this lab assignment, I used VLSM to create the following Subnet Table as shown below:

VLAN	VLAN_NAME	Hosts Needed	Network	Netmask	Router Address
200	StuWireless	900	10.6.0.0	/22	10.6.0.1
210	FSWireless	650	10.6.4.0	/22	10.6.4.1
110	Student	450	10.6.8.0	/23	10.6.8.1
1	Management	250	10.6.10.0	/24	10.6.10.1
100	FacStaff	200	10.6.11.0	/24	10.6.11.1
130	StuLab1	35	10.6.12.0	/26	10.6.12.1
140	StuLab2	35	10.6.12.64	/26	10.6.12.65

The completed network should look similar to below:

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Note: You can typically determine what mode your are in by looking at the Terminal Prompt Window.

• enable - Elevates user access to "privileged" or EXEC mode >Router# (Allows you to configure your router/switch)

• configure terminal - Changes the terminal to "global config mode" >Router(config)# (Config Menu)

• interface <interface_name_here> - Enters the configuration menu for the selected interface (must be in ">Router(config)#" mode) --> **Terminal Prompt should look similar to this: >Router(config-if)#

• exit - Command used to exit out of the current mode or setting

• end - Exits the configuration settings and returns to EXEC mode

• do <command_name_here> - Allows you to run EXEX-Level commands in any configuration mode.

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To create a new VLAN on a Cisco Switch:

• First navigate to >Router(config)# mode
• To create/select a new VLAN the command vlan <VLAN_Number>
• To name a new VLAN, type name <VLAN_Name> in the VLAN configuration mode (Ex. >Router(config-vlan)#

• To delete a VLAN, first navigate to (config) mode
• Then run no vlan <VLAN_Number> to delete the selected VLAN

The following steps can be used to configure Access/Trunk Ports on a Cisco Switch:

1. First navigate to Global Config Mode or >Router(config)#
2. Use the command: interface <interface_name_here> to select an interface (or interface range) to configure.
3. switchport mode <access>/<trunk> - Command used to change
4. no shutdown - Ensures that the port is enabled
5. Use End + Copy run start to save config for the next time the device reboots

In order to configure a range of interfaces on a Cisco Switch/Router, you first need to be in Global Config Mode or >Router(config)# mode. From here, you can run the following command to select a range of ports to configure:

• (config)interface range FastEthernet 0/x-y

To configure VLAN routing on a L3 Switch, first login and enter (config) mode. From here you can run the following commands:

• ip routing - Enables the routing functionality on a L3 Switch
• interface vlan <VLAN_Number> - Enters VLAN interface configuration mode
• ip address <IP_Address> <Subnet_Mask> - Sets the IP Address for the specified VLAN on a routing switch
• no shutdown - Ensures that the interface is enabled

Note: This config only works on L3 switches that act as the gateway for a VLAN.