How to configure vlan in cisco switch

To create a VLAN on a Cisco switch, enter global configuration mode, type vlan [ID], name it, and assign ports using switchport mode access and switchport access vlan [ID]. Common commands include vlan 10, name Sales, interface fa0/1, switchport mode access, and switchport access vlan 10. Verify using show vlan brief. 

Steps to Create and Configure a VLAN (CLI)

1. Enter Configuration Mode:textSwitch> enable Switch# configure terminal
2. Create the VLAN and Name It:textSwitch(config)# vlan 10 Switch(config-vlan)# name Engineering Switch(config-vlan)# exit
3. Assign Ports to the VLAN:textSwitch(config)# interface fastEthernet 0/1 Switch(config-if)# switchport mode access Switch(config-if)# switchport access vlan 10 Switch(config-if)# exit
4. Verify the Configuration:textSwitch# show vlan brief  

Key Considerations

• VLAN ID Range: Valid VLAN IDs are 2-4094, as 1 and 1002-1005 are reserved.
• Interface Ranges: Use interface range fa0/1 - 10 to assign multiple ports at once.
• Default VLAN: By default, all ports are in VLAN 1.
• Voice VLANs: Use switchport voice vlan [ID] for VoIP phone setups.
• Alternative Configuration: For Cisco Small Business (SMB) switches, use the web-based utility under VLAN Management > VLAN Settings.