Cisco Systems 3750E manual Deleting a Vlan, Vlan database, 13-10

Chapter 13 Configuring VLANs

Configuring Normal-Range VLANs

You can also create or modify Ethernet VLANs by using the VLAN database configuration mode.

Note VLAN database configuration mode does not support RSPAN VLAN configuration or extended-range VLANs.

Beginning in privileged EXEC mode, follow these steps to use VLAN database configuration mode to create or modify an Ethernet VLAN:

	Command	Purpose
Step 1
	vlan database	Enter VLAN database configuration mode.
Step 2
	vlan vlan-id name vlan-name	Add an Ethernet VLAN by assigning a number to it. The range is 1 to
		1001. You can create or modify a range of consecutive VLANs by
		entering vlan first-vlan-id end last-vlan-id.
		Note When entering a VLAN ID in VLAN database configuration
		mode, do not enter leading zeros.
		If no name is entered for the VLAN, the default is to append the vlan-id
		with leading zeros to the word VLAN. For example, VLAN0004 is a
		default VLAN name for VLAN 4.
Step 3
	vlan vlan-id mtu mtu-size	(Optional) To modify a VLAN, identify the VLAN and change a
		characteristic, such as the MTU size.
Step 4
	exit	Update the VLAN database, propagate it throughout the administrative
		domain, and return to privileged EXEC mode.
Step 5 show vlan {name vlan-name id vlan-id}		Verify your entries.
Step 6
	copy running-config startup config	(Optional) If the switch is in VTP transparent mode, the VLAN
		configuration is saved in the running configuration file as well as in the
		VLAN database. This saves the configuration in the switch startup
		configuration file.

To return the VLAN name to the default settings, use the no vlan vlan-idname or no vlan vlan-idmtu VLAN database configuration command.

This example shows how to use VLAN configuration mode to create Ethernet VLAN 20, name it test20, and add it to the VLAN database:

Switch# vlan database

Switch(vlan)# vlan 20 name test20

Switch(vlan)# exit

APPLY completed.

Exiting....

Deleting a VLAN

When you delete a VLAN from a switch that is in VTP server mode, the VLAN is removed from the VLAN database for all switches in the VTP domain. When you delete a VLAN from a switch that is in VTP transparent mode, the VLAN is deleted only on that specific switch or a switch stack.

You cannot delete the default VLANs for the different media types: Ethernet VLAN 1 and FDDI or Token Ring VLANs 1002 to 1005.

	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
13-10	OL-9775-02