Vlan name           Vlan Number
1. Sales                   10
2. Marketing         20
3. Account             30

To crate VLANs Run the following commands one by one

Switch(config)#vlan 10
Switch(config-vlan)#name sales
Switch(config-vlan)#exit

Switch(config)#
Switch(config)#vlan 20
Switch(config-vlan)#name marketing
Switch(config-vlan)#exit

Switch(config)#
Switch(config)#vlan 30
Switch(config-vlan)#name account
Switch(config-vlan)#exit

Switch(config)#
Switch(config)#exit
Switch#

Step:3 Now save this configuration

Switch#write
Building configuration...
[OK]



Step:4 Now assign VLAN port Membership

VLAN'sPort No.Department
Vlan 10fastEthernet 0/1  fastEthernet 0/2Sales
Vlan 20fastEthernet 0/3  fastEthernet 0/4Marketing
Vlan 30fastEthernet 0/5  fastEthernet 0/6Account

To assign VLAN membership on LAN port run the commands

Switch#
Switch#configure terminal
Switch(config)#
Switch(config)#interface fastEthernet 0/1
Switch(config-if)#switchport access vlan 10
Switch(config-if)#exit

Switch(config)#interface fastEthernet 0/2
Switch(config-if)#switchport access vlan 10
Switch(config-if)#exit

Switch(config)#
Switch(config)#interface fastEthernet 0/3
Switch(config-if)#
Switch(config-if)#switchport access vlan 20
Switch(config-if)#exit

Switch(config)#
Switch(config)#interface fastEthernet 0/4
Switch(config-if)#switchport access vlan 20
Switch(config-if)#exit

Switch(config)#
Switch(config)#interface fastEthernet 0/5
Switch(config-if)#switchport access vlan 30
Switch(config-if)#exit

Switch(config)#
Switch(config)#interface fastEthernet 0/6
Switch(config-if)#switchport access vlan 30
Switch(config-if)#exit
Switch(config)#exit

Step:5 Now save this configuration

Switch#write
Switch#show vlan



Now Vlan 10, Vlan 20 and Vlan 30 are created in switch.

Note:  
Select Multiple port
You can select multiple Ethernet ports at a time and give the VLAN membership.

Command to select multiple ethernet ports at a time. 

(interface range fastethernet 0/1 - 10)   to select 10 ports at a time.

Switch(config)#interface range fastEthernet 0/1 - 2
Switch(config-if-range)#switchport access vlan 10
Switch(config-if-range)#exit

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