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Master VLAN Configuration — A Core Skill for Every Network Engineer!
VLANs (Virtual LANs) are one of the simplest yet most powerful tools in switching. They let you segment your network, keep departments isolated, and control traffic — all on the same physical switch.
Here’s a clear example of how VLANs are created, assigned, and verified on a Cisco switch:
Creating VLAN 10
Define the VLAN and give it a meaningful name:
Switch(config)# vlan 10
Switch(config-vlan)# name IT_Department
Assigning a Port to VLAN 10
Configure the port as an access port and place it inside the VLAN:
Switch(config)# interface fa0/1
Switch(config-if)# switchport mode access
Switch(config-if)# switchport access vlan 10
Verifying the Configuration
Confirm the VLAN and port assignment:
Switch# show vlan brief
Switch# show interface fa0/1 switchport
These commands form the foundation of VLAN segmentation — something used in every enterprise network, from small offices to large data centers. Mastering them is a key step toward becoming confident with Cisco switching and preparing for CCNA/CCNP.
VLANs (Virtual LANs) are one of the simplest yet most powerful tools in switching. They let you segment your network, keep departments isolated, and control traffic — all on the same physical switch.
Here’s a clear example of how VLANs are created, assigned, and verified on a Cisco switch:
Creating VLAN 10
Define the VLAN and give it a meaningful name:
Switch(config)# vlan 10
Switch(config-vlan)# name IT_Department
Assigning a Port to VLAN 10
Configure the port as an access port and place it inside the VLAN:
Switch(config)# interface fa0/1
Switch(config-if)# switchport mode access
Switch(config-if)# switchport access vlan 10
Verifying the Configuration
Confirm the VLAN and port assignment:
Switch# show vlan brief
Switch# show interface fa0/1 switchport
These commands form the foundation of VLAN segmentation — something used in every enterprise network, from small offices to large data centers. Mastering them is a key step toward becoming confident with Cisco switching and preparing for CCNA/CCNP.