CCNA Routing and Switching: Configuring VLANs on Cisco Switches

VLANs or Virtual Local Area Networks are a powerful tool in network design that allows you to segment your network into multiple broadcast domains, increasing security and performance. VLANs allow you to group users, devices, and resources based on function, department, or location, without having to physically separate them.

In this blog post, we will go through the steps to configure VLANs on Cisco switches using the Command Line Interface (CLI). We will assume you have a basic understanding of Cisco switches and their configurations. CCNA course in Mumbai

Step 1: Create VLANs

The first step is to create the VLANs on the switch. To create a VLAN, you need to access the switch CLI using a terminal emulator such as PuTTY or HyperTerminal. Once you have access, follow these steps:

Enter privileged EXEC mode by typing enable.
Enter global configuration mode by typing configure terminal.
To create a VLAN, type vlan vlan-id, where vlan-id is the number of the VLAN you want to create.
Give the VLAN a name by typing name vlan-name, where vlan-name is the name you want to give the VLAN.

For example, to create VLAN 10 with the name "Sales," type the following commands:

Switch# enable Switch# configure terminal Switch(config)# vlan 10 Switch(config-vlan)# name Sales

Step 2: Assign Ports to VLANs

Once you have created the VLANs, you need to assign the switch ports to their respective VLANs. By default, all switch ports are assigned to VLAN 1. To assign a port to a VLAN, follow these steps:

Enter interface configuration mode by typing interface interface-id, where interface-id is the ID of the interface you want to configure.
Assign the interface to a VLAN by typing switchport access vlan vlan-id, where vlan-id is the ID of the VLAN you want to assign the interface to.
Exit interface configuration mode by typing exit. CCNA training in Mumbai

For example, to assign interface Fa0/1 to VLAN 10, type the following commands:

Switch# configure terminal Switch(config)# interface Fa0/1 Switch(config-if)# switchport access vlan 10 Switch(config-if)# exit

Step 3: Verify VLAN Configuration

To verify your VLAN configuration, use the show vlan command. This command will display a list of all VLANs on the switch, including their names, IDs, and ports.

Switch# show vlan

VLAN Name Status Ports

1 default active 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, Gi0/1 Gi0/2 10 Sales active Fa0/1 20 Marketing active 30 Engineering active 1002 fddi-default act/unsup 1003 token-ring-default act/unsup 1004 fddinet-default act/unsup 1005 trnet-default act/unsup

Conclusion

VLANs are an essential component of network design, and understanding how to configure them is critical for any network administrator. Cisco switches provide an easy-to-use CLI that makes. CCNA classes in Mumbai