cisco anyconnect

Cisco Vlan Configuration

 By configuring virtual local area networks (VLANs) on Cisco switches, you can divide your network into logical broadcast domains, improving network performance and security. Here is an overview of the VLAN configuration on a Cisco switch: 

 

 1. **Enter configuration mode:** 

 Access the switch through a console connection or remote terminal software (e.g. Kit) CLI to.Enter the switch's privileged EXEC mode by typing the enable command and providing the enable password. 

 

 2. **Enter global configuration mode:** 

 In privileged EXEC mode, enter global configuration mode with "Configure Terminal" option; or "conf t"; Command. 

 

 3. **Creating a VLAN:** ​​​​​​​​​​

 To create a VLAN, use the "vlan" command. Command followed by the VLAN ID.For example, to create VLAN 10, use the following command: 

 

 ``` 

 vlan 10 

 ``` 

 

 You can create multiple VLANs by repeating this command with different VLAN IDs. 

 

 4. **Assign VLAN Names (Optional):** 

 VLANs can be named with the “Name” option for easy identification; Command. For example: 

 

 "

 vlan 10 

 marketing name  

 "" 

 

 5. **Assign interfaces to VLANs:** 

 To assign a switch interface to a VLAN, enter the interface configuration mode with ". "Interface" commands followed by the  type and number of the interface.Then use "Switch Port"; Command to assign the interface to a VLAN. For example, to assign FastEthernet 0/1  VLAN 10: 

 

 ``` 

 interface FastEthernet0/1 

 switch port mode access 

 switch port access VLAN 10 

 ``` 

 

 6. **Trunk port configuration (optional) :** Trunk ports 

 are used to move traffic from multiple VLANs between switches. To configure the trunk port, use "Interface"; command followed by the  type and number of the interface. Then use "Switch Port"; Mode trunk command: 

 

 ``` 

 interface GigabitEthernet0/1 

 switchport mode trunk 

 ``` 

 

 You may also need to allow specific VLANs on the trunk with the "switchport trunkallow vlan" command.

 

 7. **Check the configuration:** 

 Use the show vlan command to check the created VLANs and their assignments. Also "Show interface status"; You can view the VLAN assigned to each port. 

 

 8. **Save configuration:** 

 After configuring the VLAN, save the configuration to the boot configuration file to ensure  changes persist after  reboot.Use "Write to memory" or "Copy running-config startup configuration". Command. 

 

 Note that the above commands provide a basic overview of VLAN configuration. Depending on the switch model and Cisco IOS version, some commands may be different. Always refer to the specific switch documentation or  official Cisco resources for accurate and up-to-date information.